[nginx] svn commit: r5122 - in trunk: auto src/http src/http/modules

vbart at nginx.com vbart at nginx.com
Wed Mar 20 10:36:57 UTC 2013


Author: vbart
Date: 2013-03-20 10:36:57 +0000 (Wed, 20 Mar 2013)
New Revision: 5122
URL: http://trac.nginx.org/nginx/changeset/5122/nginx

Log:
Preliminary experimental support for SPDY draft 2.


Added:
   trunk/src/http/ngx_http_spdy.c
   trunk/src/http/ngx_http_spdy.h
   trunk/src/http/ngx_http_spdy_filter_module.c
   trunk/src/http/ngx_http_spdy_module.c
   trunk/src/http/ngx_http_spdy_module.h
Modified:
   trunk/auto/modules
   trunk/auto/options
   trunk/auto/sources
   trunk/src/http/modules/ngx_http_ssl_module.c
   trunk/src/http/ngx_http.c
   trunk/src/http/ngx_http.h
   trunk/src/http/ngx_http_core_module.c
   trunk/src/http/ngx_http_core_module.h
   trunk/src/http/ngx_http_parse.c
   trunk/src/http/ngx_http_request.c
   trunk/src/http/ngx_http_request.h
   trunk/src/http/ngx_http_request_body.c
   trunk/src/http/ngx_http_upstream.c

Modified: trunk/auto/modules
===================================================================
--- trunk/auto/modules	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/auto/modules	2013-03-20 10:36:57 UTC (rev 5122)
@@ -100,6 +100,7 @@
 #     ngx_http_write_filter
 #     ngx_http_header_filter
 #     ngx_http_chunked_filter
+#     ngx_http_spdy_filter
 #     ngx_http_range_header_filter
 #     ngx_http_gzip_filter
 #     ngx_http_postpone_filter
@@ -118,9 +119,14 @@
 
 HTTP_FILTER_MODULES="$HTTP_WRITE_FILTER_MODULE \
                      $HTTP_HEADER_FILTER_MODULE \
-                     $HTTP_CHUNKED_FILTER_MODULE \
-                     $HTTP_RANGE_HEADER_FILTER_MODULE"
+                     $HTTP_CHUNKED_FILTER_MODULE"
 
+if [ $HTTP_SPDY = YES ]; then
+    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_SPDY_FILTER_MODULE"
+fi
+
+HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_RANGE_HEADER_FILTER_MODULE"
+
 if [ $HTTP_GZIP = YES ]; then
     have=NGX_HTTP_GZIP . auto/have
     USE_ZLIB=YES
@@ -179,6 +185,15 @@
     HTTP_SRCS="$HTTP_SRCS $HTTP_USERID_SRCS"
 fi
 
+
+if [ $HTTP_SPDY = YES ]; then
+    have=NGX_HTTP_SPDY . auto/have
+    USE_ZLIB=YES
+    HTTP_MODULES="$HTTP_MODULES $HTTP_SPDY_MODULE"
+    HTTP_DEPS="$HTTP_DEPS $HTTP_SPDY_DEPS"
+    HTTP_SRCS="$HTTP_SRCS $HTTP_SPDY_SRCS"
+fi
+
 HTTP_MODULES="$HTTP_MODULES $HTTP_STATIC_MODULE"
 
 if [ $HTTP_GZIP_STATIC = YES ]; then

Modified: trunk/auto/options
===================================================================
--- trunk/auto/options	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/auto/options	2013-03-20 10:36:57 UTC (rev 5122)
@@ -60,6 +60,7 @@
 HTTP_CHARSET=YES
 HTTP_GZIP=YES
 HTTP_SSL=NO
+HTTP_SPDY=NO
 HTTP_SSI=YES
 HTTP_POSTPONE=NO
 HTTP_REALIP=NO
@@ -202,6 +203,7 @@
         --http-scgi-temp-path=*)         NGX_HTTP_SCGI_TEMP_PATH="$value" ;;
 
         --with-http_ssl_module)          HTTP_SSL=YES               ;;
+        --with-http_spdy_module)         HTTP_SPDY=YES              ;;
         --with-http_realip_module)       HTTP_REALIP=YES            ;;
         --with-http_addition_module)     HTTP_ADDITION=YES          ;;
         --with-http_xslt_module)         HTTP_XSLT=YES              ;;
@@ -349,6 +351,7 @@
   --with-ipv6                        enable IPv6 support
 
   --with-http_ssl_module             enable ngx_http_ssl_module
+  --with-http_spdy_module            enable ngx_http_spdy_module
   --with-http_realip_module          enable ngx_http_realip_module
   --with-http_addition_module        enable ngx_http_addition_module
   --with-http_xslt_module            enable ngx_http_xslt_module

Modified: trunk/auto/sources
===================================================================
--- trunk/auto/sources	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/auto/sources	2013-03-20 10:36:57 UTC (rev 5122)
@@ -324,6 +324,15 @@
 HTTP_FILE_CACHE_SRCS=src/http/ngx_http_file_cache.c
 
 
+HTTP_SPDY_MODULE=ngx_http_spdy_module
+HTTP_SPDY_FILTER_MODULE=ngx_http_spdy_filter_module
+HTTP_SPDY_DEPS="src/http/ngx_http_spdy.h \
+                src/http/ngx_http_spdy_module.h"
+HTTP_SPDY_SRCS="src/http/ngx_http_spdy.c \
+                src/http/ngx_http_spdy_module.c \
+                src/http/ngx_http_spdy_filter_module.c"
+
+
 HTTP_CHARSET_FILTER_MODULE=ngx_http_charset_filter_module
 HTTP_CHARSET_SRCS=src/http/modules/ngx_http_charset_filter_module.c
 

Modified: trunk/src/http/modules/ngx_http_ssl_module.c
===================================================================
--- trunk/src/http/modules/ngx_http_ssl_module.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/modules/ngx_http_ssl_module.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -275,13 +275,28 @@
 ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
     const unsigned char **out, unsigned int *outlen, void *arg)
 {
-#if (NGX_DEBUG)
+#if (NGX_HTTP_SPDY || NGX_DEBUG)
     ngx_connection_t  *c;
 
     c = ngx_ssl_get_connection(ssl_conn);
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL NPN advertised");
 #endif
 
+#if (NGX_HTTP_SPDY)
+    {
+    ngx_http_connection_t  *hc;
+
+    hc = c->data;
+
+    if (hc->addr_conf->spdy) {
+        *out = (unsigned char *) NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
+        *outlen = sizeof(NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1;
+
+        return SSL_TLSEXT_ERR_OK;
+    }
+    }
+#endif
+
     *out = (unsigned char *) NGX_HTTP_NPN_ADVERTISE;
     *outlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1;
 

Modified: trunk/src/http/ngx_http.c
===================================================================
--- trunk/src/http/ngx_http.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -1225,6 +1225,9 @@
 #if (NGX_HTTP_SSL)
     ngx_uint_t             ssl;
 #endif
+#if (NGX_HTTP_SPDY)
+    ngx_uint_t             spdy;
+#endif
 
     /*
      * we cannot compare whole sockaddr struct's as kernel
@@ -1277,6 +1280,9 @@
 #if (NGX_HTTP_SSL)
         ssl = lsopt->ssl || addr[i].opt.ssl;
 #endif
+#if (NGX_HTTP_SPDY)
+        spdy = lsopt->spdy || addr[i].opt.spdy;
+#endif
 
         if (lsopt->set) {
 
@@ -1307,6 +1313,9 @@
 #if (NGX_HTTP_SSL)
         addr[i].opt.ssl = ssl;
 #endif
+#if (NGX_HTTP_SPDY)
+        addr[i].opt.spdy = spdy;
+#endif
 
         return NGX_OK;
     }
@@ -1337,6 +1346,14 @@
         }
     }
 
+#if (NGX_HTTP_SPDY && NGX_HTTP_SSL && !defined TLSEXT_TYPE_next_proto_neg)
+    if (lsopt->spdy && lsopt->ssl) {
+        ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+                           "nginx was built without OpenSSL NPN support, "
+                           "SPDY is not enabled for %s", lsopt->addr);
+    }
+#endif
+
     addr = ngx_array_push(&port->addrs);
     if (addr == NULL) {
         return NGX_ERROR;
@@ -1820,6 +1837,9 @@
 #if (NGX_HTTP_SSL)
         addrs[i].conf.ssl = addr[i].opt.ssl;
 #endif
+#if (NGX_HTTP_SPDY)
+        addrs[i].conf.spdy = addr[i].opt.spdy;
+#endif
 
         if (addr[i].hash.buckets == NULL
             && (addr[i].wc_head == NULL
@@ -1881,6 +1901,9 @@
 #if (NGX_HTTP_SSL)
         addrs6[i].conf.ssl = addr[i].opt.ssl;
 #endif
+#if (NGX_HTTP_SPDY)
+        addrs6[i].conf.spdy = addr[i].opt.spdy;
+#endif
 
         if (addr[i].hash.buckets == NULL
             && (addr[i].wc_head == NULL

Modified: trunk/src/http/ngx_http.h
===================================================================
--- trunk/src/http/ngx_http.h	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http.h	2013-03-20 10:36:57 UTC (rev 5122)
@@ -20,6 +20,10 @@
 typedef struct ngx_http_log_ctx_s     ngx_http_log_ctx_t;
 typedef struct ngx_http_chunked_s     ngx_http_chunked_t;
 
+#if (NGX_HTTP_SPDY)
+typedef struct ngx_http_spdy_stream_s  ngx_http_spdy_stream_t;
+#endif
+
 typedef ngx_int_t (*ngx_http_header_handler_pt)(ngx_http_request_t *r,
     ngx_table_elt_t *h, ngx_uint_t offset);
 typedef u_char *(*ngx_http_log_handler_pt)(ngx_http_request_t *r,
@@ -35,6 +39,9 @@
 #include <ngx_http_busy_lock.h>
 #include <ngx_http_core_module.h>
 
+#if (NGX_HTTP_SPDY)
+#include <ngx_http_spdy.h>
+#endif
 #if (NGX_HTTP_CACHE)
 #include <ngx_http_cache.h>
 #endif
@@ -80,12 +87,14 @@
 
 
 void ngx_http_init_connection(ngx_connection_t *c);
+void ngx_http_close_connection(ngx_connection_t *c);
 
 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
 int ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg);
 #endif
 
 ngx_int_t ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b);
+ngx_int_t ngx_http_parse_uri(ngx_http_request_t *r);
 ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r,
     ngx_uint_t merge_slashes);
 ngx_int_t ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
@@ -104,12 +113,17 @@
     ngx_http_chunked_t *ctx);
 
 
+ngx_http_request_t *ngx_http_create_request(ngx_connection_t *c);
+ngx_int_t ngx_http_process_request_uri(ngx_http_request_t *r);
+ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
+void ngx_http_process_request(ngx_http_request_t *r);
 void ngx_http_update_location_config(ngx_http_request_t *r);
 void ngx_http_handler(ngx_http_request_t *r);
 void ngx_http_run_posted_requests(ngx_connection_t *c);
 ngx_int_t ngx_http_post_request(ngx_http_request_t *r,
     ngx_http_posted_request_t *pr);
 void ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc);
+void ngx_http_free_request(ngx_http_request_t *r, ngx_int_t rc);
 
 void ngx_http_empty_handler(ngx_event_t *wev);
 void ngx_http_request_empty_handler(ngx_http_request_t *r);

Modified: trunk/src/http/ngx_http_core_module.c
===================================================================
--- trunk/src/http/ngx_http_core_module.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_core_module.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -2130,6 +2130,13 @@
         return NGX_DECLINED;
     }
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        r->gzip_ok = 1;
+        return NGX_OK;
+    }
+#endif
+
     ae = r->headers_in.accept_encoding;
     if (ae == NULL) {
         return NGX_DECLINED;
@@ -2464,6 +2471,10 @@
 
     sr->request_body = r->request_body;
 
+#if (NGX_HTTP_SPDY)
+    sr->spdy_stream = r->spdy_stream;
+#endif
+
     sr->method = NGX_HTTP_GET;
     sr->http_version = r->http_version;
 
@@ -4130,6 +4141,18 @@
 #endif
         }
 
+        if (ngx_strcmp(value[n].data, "spdy") == 0) {
+#if (NGX_HTTP_SPDY)
+            lsopt.spdy = 1;
+            continue;
+#else
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "the \"spdy\" parameter requires "
+                               "ngx_http_spdy_module");
+            return NGX_CONF_ERROR;
+#endif
+        }
+
         if (ngx_strncmp(value[n].data, "so_keepalive=", 13) == 0) {
 
             if (ngx_strcmp(&value[n].data[13], "on") == 0) {

Modified: trunk/src/http/ngx_http_core_module.h
===================================================================
--- trunk/src/http/ngx_http_core_module.h	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_core_module.h	2013-03-20 10:36:57 UTC (rev 5122)
@@ -75,6 +75,9 @@
 #if (NGX_HTTP_SSL)
     unsigned                   ssl:1;
 #endif
+#if (NGX_HTTP_SPDY)
+    unsigned                   spdy:1;
+#endif
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
     unsigned                   ipv6only:1;
 #endif
@@ -232,8 +235,11 @@
     ngx_http_virtual_names_t  *virtual_names;
 
 #if (NGX_HTTP_SSL)
-    ngx_uint_t                 ssl;   /* unsigned  ssl:1; */
+    unsigned                   ssl:1;
 #endif
+#if (NGX_HTTP_SPDY)
+    unsigned                   spdy:1;
+#endif
 };
 
 

Modified: trunk/src/http/ngx_http_parse.c
===================================================================
--- trunk/src/http/ngx_http_parse.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_parse.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -1075,6 +1075,154 @@
 
 
 ngx_int_t
+ngx_http_parse_uri(ngx_http_request_t *r)
+{
+    u_char  *p, ch;
+    enum {
+        sw_start = 0,
+        sw_after_slash_in_uri,
+        sw_check_uri,
+        sw_uri
+    } state;
+
+    state = sw_start;
+
+    for (p = r->uri_start; p != r->uri_end; p++) {
+
+        ch = *p;
+
+        switch (state) {
+
+        case sw_start:
+
+            if (ch != '/') {
+                return NGX_ERROR;
+            }
+
+            state = sw_after_slash_in_uri;
+            break;
+
+        /* check "/.", "//", "%", and "\" (Win32) in URI */
+        case sw_after_slash_in_uri:
+
+            if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+                state = sw_check_uri;
+                break;
+            }
+
+            switch (ch) {
+            case ' ':
+                r->space_in_uri = 1;
+                state = sw_check_uri;
+                break;
+            case '.':
+                r->complex_uri = 1;
+                state = sw_uri;
+                break;
+            case '%':
+                r->quoted_uri = 1;
+                state = sw_uri;
+                break;
+            case '/':
+                r->complex_uri = 1;
+                state = sw_uri;
+                break;
+#if (NGX_WIN32)
+            case '\\':
+                r->complex_uri = 1;
+                state = sw_uri;
+                break;
+#endif
+            case '?':
+                r->args_start = p + 1;
+                state = sw_uri;
+                break;
+            case '#':
+                r->complex_uri = 1;
+                state = sw_uri;
+                break;
+            case '+':
+                r->plus_in_uri = 1;
+                break;
+            default:
+                state = sw_check_uri;
+                break;
+            }
+            break;
+
+        /* check "/", "%" and "\" (Win32) in URI */
+        case sw_check_uri:
+
+            if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+                break;
+            }
+
+            switch (ch) {
+            case '/':
+#if (NGX_WIN32)
+                if (r->uri_ext == p) {
+                    r->complex_uri = 1;
+                    state = sw_uri;
+                    break;
+                }
+#endif
+                r->uri_ext = NULL;
+                state = sw_after_slash_in_uri;
+                break;
+            case '.':
+                r->uri_ext = p + 1;
+                break;
+            case ' ':
+                r->space_in_uri = 1;
+                break;
+#if (NGX_WIN32)
+            case '\\':
+                r->complex_uri = 1;
+                state = sw_after_slash_in_uri;
+                break;
+#endif
+            case '%':
+                r->quoted_uri = 1;
+                state = sw_uri;
+                break;
+            case '?':
+                r->args_start = p + 1;
+                state = sw_uri;
+                break;
+            case '#':
+                r->complex_uri = 1;
+                state = sw_uri;
+                break;
+            case '+':
+                r->plus_in_uri = 1;
+                break;
+            }
+            break;
+
+        /* URI */
+        case sw_uri:
+
+            if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
+                break;
+            }
+
+            switch (ch) {
+            case ' ':
+                r->space_in_uri = 1;
+                break;
+            case '#':
+                r->complex_uri = 1;
+                break;
+            }
+            break;
+        }
+    }
+
+    return NGX_OK;
+}
+
+
+ngx_int_t
 ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes)
 {
     u_char  c, ch, decoded, *p, *u;

Modified: trunk/src/http/ngx_http_request.c
===================================================================
--- trunk/src/http/ngx_http_request.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_request.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -11,7 +11,6 @@
 
 
 static void ngx_http_wait_request_handler(ngx_event_t *ev);
-static ngx_http_request_t *ngx_http_create_request(ngx_connection_t *c);
 static void ngx_http_process_request_line(ngx_event_t *rev);
 static void ngx_http_process_request_headers(ngx_event_t *rev);
 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
@@ -31,9 +30,6 @@
 static ngx_int_t ngx_http_process_user_agent(ngx_http_request_t *r,
     ngx_table_elt_t *h, ngx_uint_t offset);
 
-static ngx_int_t ngx_http_process_request_uri(ngx_http_request_t *r);
-static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
-static void ngx_http_process_request(ngx_http_request_t *r);
 static ngx_int_t ngx_http_validate_host(ngx_str_t *host, ngx_pool_t *pool,
     ngx_uint_t alloc);
 static ngx_int_t ngx_http_set_virtual_server(ngx_http_request_t *r,
@@ -56,9 +52,7 @@
 static void ngx_http_lingering_close_handler(ngx_event_t *ev);
 static ngx_int_t ngx_http_post_action(ngx_http_request_t *r);
 static void ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error);
-static void ngx_http_free_request(ngx_http_request_t *r, ngx_int_t error);
 static void ngx_http_log_request(ngx_http_request_t *r);
-static void ngx_http_close_connection(ngx_connection_t *c);
 
 static u_char *ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len);
 static u_char *ngx_http_log_error_handler(ngx_http_request_t *r,
@@ -318,6 +312,12 @@
     rev->handler = ngx_http_wait_request_handler;
     c->write->handler = ngx_http_empty_handler;
 
+#if (NGX_HTTP_SPDY)
+    if (hc->addr_conf->spdy) {
+        rev->handler = ngx_http_spdy_init;
+    }
+#endif
+
 #if (NGX_HTTP_SSL)
     {
     ngx_http_ssl_srv_conf_t  *sscf;
@@ -487,7 +487,7 @@
 }
 
 
-static ngx_http_request_t *
+ngx_http_request_t *
 ngx_http_create_request(ngx_connection_t *c)
 {
     ngx_pool_t                 *pool;
@@ -727,6 +727,21 @@
 
         c->ssl->no_wait_shutdown = 1;
 
+#if (NGX_HTTP_SPDY && defined TLSEXT_TYPE_next_proto_neg)
+        {
+        unsigned int             len;
+        const unsigned char     *data;
+        static const ngx_str_t   spdy = ngx_string(NGX_SPDY_NPN_NEGOTIATED);
+
+        SSL_get0_next_proto_negotiated(c->ssl->connection, &data, &len);
+
+        if (len == spdy.len && ngx_strncmp(data, spdy.data, spdy.len) == 0) {
+            ngx_http_spdy_init(c->read);
+            return;
+        }
+        }
+#endif
+
         c->log->action = "waiting for request";
 
         c->read->handler = ngx_http_wait_request_handler;
@@ -985,7 +1000,7 @@
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_process_request_uri(ngx_http_request_t *r)
 {
     ngx_http_core_srv_conf_t  *cscf;
@@ -1687,7 +1702,7 @@
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_process_request_header(ngx_http_request_t *r)
 {
     if (r->headers_in.server.len == 0
@@ -1757,7 +1772,7 @@
 }
 
 
-static void
+void
 ngx_http_process_request(ngx_http_request_t *r)
 {
     ngx_connection_t  *c;
@@ -2434,6 +2449,13 @@
 {
     ngx_http_core_loc_conf_t  *clcf;
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        ngx_http_close_request(r, 0);
+        return;
+    }
+#endif
+
     clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
 
     if (r->main->count != 1) {
@@ -2488,6 +2510,12 @@
                                 ngx_http_test_reading;
     r->write_event_handler = ngx_http_writer;
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        return NGX_OK;
+    }
+#endif
+
     wev = r->connection->write;
 
     if (wev->ready && wev->delayed) {
@@ -2635,6 +2663,19 @@
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http test reading");
 
+#if (NGX_HTTP_SPDY)
+
+    if (r->spdy_stream) {
+        if (c->error) {
+            err = 0;
+            goto closed;
+        }
+
+        return;
+    }
+
+#endif
+
 #if (NGX_HAVE_KQUEUE)
 
     if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
@@ -3270,12 +3311,19 @@
         return;
     }
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        ngx_http_spdy_close_stream(r->spdy_stream, rc);
+        return;
+    }
+#endif
+
     ngx_http_free_request(r, rc);
     ngx_http_close_connection(c);
 }
 
 
-static void
+void
 ngx_http_free_request(ngx_http_request_t *r, ngx_int_t rc)
 {
     ngx_log_t                 *log;
@@ -3376,7 +3424,7 @@
 }
 
 
-static void
+void
 ngx_http_close_connection(ngx_connection_t *c)
 {
     ngx_pool_t  *pool;

Modified: trunk/src/http/ngx_http_request.h
===================================================================
--- trunk/src/http/ngx_http_request.h	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_request.h	2013-03-20 10:36:57 UTC (rev 5122)
@@ -429,6 +429,9 @@
     ngx_uint_t                        err_status;
 
     ngx_http_connection_t            *http_connection;
+#if (NGX_HTTP_SPDY)
+    ngx_http_spdy_stream_t           *spdy_stream;
+#endif
 
     ngx_http_log_handler_pt           log_handler;
 

Modified: trunk/src/http/ngx_http_request_body.c
===================================================================
--- trunk/src/http/ngx_http_request_body.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_request_body.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -42,6 +42,13 @@
 
     r->main->count++;
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        rc = ngx_http_spdy_read_request_body(r, post_handler);
+        goto done;
+    }
+#endif
+
     if (r->request_body || r->discard_body) {
         post_handler(r);
         return NGX_OK;
@@ -475,6 +482,13 @@
     ngx_int_t     rc;
     ngx_event_t  *rev;
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream && r == r->main) {
+        r->spdy_stream->skip_data = NGX_SPDY_DATA_DISCARD;
+        return NGX_OK;
+    }
+#endif
+
     if (r != r->main || r->discard_body || r->request_body) {
         return NGX_OK;
     }

Added: trunk/src/http/ngx_http_spdy.c
===================================================================
--- trunk/src/http/ngx_http_spdy.c	                        (rev 0)
+++ trunk/src/http/ngx_http_spdy.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -0,0 +1,2881 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_spdy_module.h>
+
+#include <zlib.h>
+
+
+#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4)                                    \
+    *(uint32_t *) m == (c3 << 24 | c2 << 16 | c1 << 8 | c0)                   \
+        && m[4] == c4
+
+#else
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4)                                    \
+    m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
+
+#endif
+
+
+#if (NGX_HAVE_NONALIGNED)
+
+#define ngx_spdy_frame_parse_uint16(p)  ntohs(*(uint16_t *) (p))
+#define ngx_spdy_frame_parse_uint32(p)  ntohl(*(uint32_t *) (p))
+
+#else
+
+#define ngx_spdy_frame_parse_uint16(p) ((p)[0] << 8 | (p)[1])
+#define ngx_spdy_frame_parse_uint32(p)                                        \
+    ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
+
+#endif
+
+#define ngx_spdy_frame_parse_sid(p)                                           \
+    (ngx_spdy_frame_parse_uint32(p) & 0x7fffffff)
+
+
+#define ngx_spdy_ctl_frame_check(h)                                           \
+    (((h) & 0xffffff00) == ngx_spdy_ctl_frame_head(0))
+#define ngx_spdy_data_frame_check(h)                                          \
+    (!((h) & (uint32_t) NGX_SPDY_CTL_BIT << 31))
+
+#define ngx_spdy_ctl_frame_type(h)   ((h) & 0x000000ff)
+#define ngx_spdy_frame_flags(p)      ((p) >> 24)
+#define ngx_spdy_frame_length(p)     ((p) & 0x00ffffff)
+
+
+#define NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE  4096
+#define NGX_SPDY_CTL_FRAME_BUFFER_SIZE     16
+
+#define NGX_SPDY_PROTOCOL_ERROR            1
+#define NGX_SPDY_INVALID_STREAM            2
+#define NGX_SPDY_REFUSED_STREAM            3
+#define NGX_SPDY_UNSUPPORTED_VERSION       4
+#define NGX_SPDY_CANCEL                    5
+#define NGX_SPDY_INTERNAL_ERROR            6
+#define NGX_SPDY_FLOW_CONTROL_ERROR        7
+
+#define NGX_SPDY_SETTINGS_MAX_STREAMS      4
+
+#define NGX_SPDY_SETTINGS_FLAG_PERSIST     0x01
+
+typedef struct {
+    ngx_uint_t    hash;
+    u_char        len;
+    u_char        header[7];
+    ngx_int_t   (*handler)(ngx_http_request_t *r);
+} ngx_http_spdy_request_header_t;
+
+
+static void ngx_http_spdy_read_handler(ngx_event_t *rev);
+static void ngx_http_spdy_write_handler(ngx_event_t *wev);
+static void ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc);
+
+static u_char *ngx_http_spdy_state_detect_settings(
+    ngx_http_spdy_connection_t *sc, u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_noop(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler);
+static u_char *ngx_http_spdy_state_protocol_error(
+    ngx_http_spdy_connection_t *sc);
+static u_char *ngx_http_spdy_state_internal_error(
+    ngx_http_spdy_connection_t *sc);
+
+static ngx_int_t ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc,
+    ngx_uint_t sid, ngx_uint_t status, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc);
+static ngx_int_t ngx_http_spdy_settings_frame_handler(
+    ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_http_spdy_out_frame_t *ngx_http_spdy_get_ctl_frame(
+    ngx_http_spdy_connection_t *sc, size_t size, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_ctl_frame_handler(
+    ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+
+static ngx_http_spdy_stream_t *ngx_http_spdy_create_stream(
+    ngx_http_spdy_connection_t *sc, ngx_uint_t id, ngx_uint_t priority);
+static ngx_http_spdy_stream_t *ngx_http_spdy_get_stream_by_id(
+    ngx_http_spdy_connection_t *sc, ngx_uint_t sid);
+#define ngx_http_spdy_streams_index_size(sscf)  (sscf->streams_index_mask + 1)
+#define ngx_http_spdy_stream_index(sscf, sid)                                 \
+    ((sid >> 1) & sscf->streams_index_mask)
+
+static ngx_int_t ngx_http_spdy_parse_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_handle_request_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_method(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_scheme(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_url(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_version(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_construct_request_line(ngx_http_request_t *r);
+static void ngx_http_spdy_run_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_init_request_body(ngx_http_request_t *r);
+
+static void ngx_http_spdy_handle_connection_handler(ngx_event_t *rev);
+static void ngx_http_spdy_keepalive_handler(ngx_event_t *rev);
+static void ngx_http_spdy_finalize_connection(ngx_http_spdy_connection_t *sc,
+    ngx_int_t rc);
+
+static void ngx_http_spdy_pool_cleanup(void *data);
+
+static void *ngx_http_spdy_zalloc(void *opaque, u_int items, u_int size);
+static void ngx_http_spdy_zfree(void *opaque, void *address);
+
+
+static const u_char ngx_http_spdy_dict[] =
+    "options" "get" "head" "post" "put" "delete" "trace"
+    "accept" "accept-charset" "accept-encoding" "accept-language"
+    "authorization" "expect" "from" "host"
+    "if-modified-since" "if-match" "if-none-match" "if-range"
+    "if-unmodifiedsince" "max-forwards" "proxy-authorization"
+    "range" "referer" "te" "user-agent"
+    "100" "101" "200" "201" "202" "203" "204" "205" "206"
+    "300" "301" "302" "303" "304" "305" "306" "307"
+    "400" "401" "402" "403" "404" "405" "406" "407" "408" "409" "410"
+    "411" "412" "413" "414" "415" "416" "417"
+    "500" "501" "502" "503" "504" "505"
+    "accept-ranges" "age" "etag" "location" "proxy-authenticate" "public"
+    "retry-after" "server" "vary" "warning" "www-authenticate" "allow"
+    "content-base" "content-encoding" "cache-control" "connection" "date"
+    "trailer" "transfer-encoding" "upgrade" "via" "warning"
+    "content-language" "content-length" "content-location"
+    "content-md5" "content-range" "content-type" "etag" "expires"
+    "last-modified" "set-cookie"
+    "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" "Sunday"
+    "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"
+    "chunked" "text/html" "image/png" "image/jpg" "image/gif"
+    "application/xml" "application/xhtml" "text/plain" "public" "max-age"
+    "charset=iso-8859-1" "utf-8" "gzip" "deflate" "HTTP/1.1" "status"
+    "version" "url";
+
+
+static ngx_http_spdy_request_header_t ngx_http_spdy_request_headers[] = {
+    { 0, 6, "method", ngx_http_spdy_parse_method },
+    { 0, 6, "scheme", ngx_http_spdy_parse_scheme },
+    { 0, 3, "url", ngx_http_spdy_parse_url },
+    { 0, 7, "version", ngx_http_spdy_parse_version },
+};
+
+#define NGX_SPDY_REQUEST_HEADERS                                              \
+    (sizeof(ngx_http_spdy_request_headers)                                    \
+     / sizeof(ngx_http_spdy_request_header_t))
+
+
+void
+ngx_http_spdy_init(ngx_event_t *rev)
+{
+    int                          rc;
+    ngx_connection_t            *c;
+    ngx_pool_cleanup_t          *cln;
+    ngx_http_connection_t       *hc;
+    ngx_http_spdy_srv_conf_t    *sscf;
+    ngx_http_spdy_main_conf_t   *smcf;
+    ngx_http_spdy_connection_t  *sc;
+
+    c = rev->data;
+    hc = c->data;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                   "init spdy request");
+
+    c->log->action = "processing SPDY";
+
+    smcf = ngx_http_get_module_main_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+    if (smcf->recv_buffer == NULL) {
+        smcf->recv_buffer = ngx_palloc(ngx_cycle->pool, smcf->recv_buffer_size);
+        if (smcf->recv_buffer == NULL) {
+            ngx_http_close_connection(c);
+            return;
+        }
+    }
+
+    sc = ngx_pcalloc(c->pool, sizeof(ngx_http_spdy_connection_t));
+    if (sc == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    sc->connection = c;
+    sc->http_connection = hc;
+
+    sc->handler = ngx_http_spdy_state_detect_settings;
+
+    sc->zstream_in.zalloc = ngx_http_spdy_zalloc;
+    sc->zstream_in.zfree = ngx_http_spdy_zfree;
+    sc->zstream_in.opaque = sc;
+
+    rc = inflateInit(&sc->zstream_in);
+    if (rc != Z_OK) {
+        ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+                      "inflateInit() failed: %d", rc);
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    sc->zstream_out.zalloc = ngx_http_spdy_zalloc;
+    sc->zstream_out.zfree = ngx_http_spdy_zfree;
+    sc->zstream_out.opaque = sc;
+
+    sscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+    rc = deflateInit2(&sc->zstream_out, (int) sscf->headers_comp,
+                      Z_DEFLATED, 11, 4, Z_DEFAULT_STRATEGY);
+
+    if (rc != Z_OK) {
+        ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+                      "deflateInit2() failed: %d", rc);
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    rc = deflateSetDictionary(&sc->zstream_out, ngx_http_spdy_dict,
+                              sizeof(ngx_http_spdy_dict));
+    if (rc != Z_OK) {
+        ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+                      "deflateSetDictionary() failed: %d", rc);
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    sc->pool = ngx_create_pool(sscf->pool_size, sc->connection->log);
+    if (sc->pool == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_pool_cleanup_file_t));
+    if (cln == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    cln->handler = ngx_http_spdy_pool_cleanup;
+    cln->data = sc;
+
+    sc->streams_index = ngx_pcalloc(sc->pool,
+                                    ngx_http_spdy_streams_index_size(sscf)
+                                    * sizeof(ngx_http_spdy_stream_t *));
+    if (sc->streams_index == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    c->data = sc;
+
+    rev->handler = ngx_http_spdy_read_handler;
+    c->write->handler = ngx_http_spdy_write_handler;
+
+    ngx_http_spdy_read_handler(rev);
+}
+
+
+static void
+ngx_http_spdy_read_handler(ngx_event_t *rev)
+{
+    u_char                      *p, *end;
+    size_t                       available;
+    ssize_t                      n;
+    ngx_connection_t            *c;
+    ngx_http_spdy_main_conf_t   *smcf;
+    ngx_http_spdy_connection_t  *sc;
+
+    c = rev->data;
+    sc = c->data;
+
+    if (rev->timedout) {
+        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
+        ngx_http_spdy_finalize_connection(sc, NGX_HTTP_REQUEST_TIME_OUT);
+        return;
+    }
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy read handler");
+
+    sc->blocked = 1;
+
+    smcf = ngx_http_get_module_main_conf(sc->http_connection->conf_ctx,
+                                         ngx_http_spdy_module);
+
+    available = smcf->recv_buffer_size - 2 * NGX_SPDY_STATE_BUFFER_SIZE;
+
+    do {
+        p = smcf->recv_buffer;
+
+        ngx_memcpy(p, sc->buffer, NGX_SPDY_STATE_BUFFER_SIZE);
+        end = p + sc->buffer_used;
+
+        n = c->recv(c, end, available);
+
+        if (n == NGX_AGAIN) {
+            break;
+        }
+
+        if (n == 0 && (sc->waiting || sc->processing)) {
+            ngx_log_error(NGX_LOG_INFO, c->log, 0,
+                          "client closed prematurely connection");
+        }
+
+        if (n == 0 || n == NGX_ERROR) {
+            ngx_http_spdy_finalize_connection(sc,
+                                              NGX_HTTP_CLIENT_CLOSED_REQUEST);
+            return;
+        }
+
+        end += n;
+
+        sc->buffer_used = 0;
+        sc->waiting = 0;
+
+        do {
+            p = sc->handler(sc, p, end);
+
+            if (p == NULL) {
+                return;
+            }
+
+        } while (p != end);
+
+    } while (rev->ready);
+
+    if (ngx_handle_read_event(rev, 0) != NGX_OK) {
+        ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return;
+    }
+
+    sc->blocked = 0;
+
+    if (sc->processing) {
+        if (rev->timer_set) {
+            ngx_del_timer(rev);
+        }
+        return;
+    }
+
+    ngx_http_spdy_handle_connection(sc);
+}
+
+
+static void
+ngx_http_spdy_write_handler(ngx_event_t *wev)
+{
+    ngx_int_t                    rc;
+    ngx_connection_t            *c;
+    ngx_http_spdy_stream_t      *stream, *s, *sn;
+    ngx_http_spdy_connection_t  *sc;
+
+    c = wev->data;
+    sc = c->data;
+
+    if (wev->timedout) {
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                       "spdy write event timed out");
+        ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+        return;
+    }
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy write handler");
+
+    sc->blocked = 2;
+
+    rc = ngx_http_spdy_send_output_queue(sc);
+
+    if (rc == NGX_ERROR) {
+        ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+        return;
+    }
+
+    stream = NULL;
+
+    for (s = sc->last_stream; s; s = sn) {
+         sn = s->next;
+         s->next = stream;
+         stream = s;
+    }
+
+    sc->last_stream = NULL;
+
+    sc->blocked = 1;
+
+    for ( /* void */ ; stream; stream = sn) {
+        sn = stream->next;
+        stream->handled = 0;
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                       "spdy run stream %ui", stream->id);
+
+        wev = stream->request->connection->write;
+        wev->handler(wev);
+    }
+
+    sc->blocked = 0;
+
+    if (rc == NGX_AGAIN) {
+        return;
+    }
+
+    ngx_http_spdy_handle_connection(sc);
+}
+
+
+ngx_int_t
+ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc)
+{
+    ngx_chain_t                *cl;
+    ngx_event_t                *wev;
+    ngx_connection_t           *c;
+    ngx_http_core_loc_conf_t   *clcf;
+    ngx_http_spdy_out_frame_t  *out, *frame, *fn;
+
+    c = sc->connection;
+
+    if (c->error) {
+        return NGX_ERROR;
+    }
+
+    wev = c->write;
+
+    if (!wev->ready) {
+        return NGX_OK;
+    }
+
+    cl = NULL;
+    out = NULL;
+
+    for (frame = sc->last_out; frame; frame = fn) {
+        frame->last->next = cl;
+        cl = frame->first;
+
+        fn = frame->next;
+        frame->next = out;
+        out = frame;
+
+        ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                       "spdy frame out: %p sid:%ui prio:%ui bl:%ui size:%uz",
+                       out, out->stream ? out->stream->id : 0, out->priority,
+                       out->blocked, out->size);
+    }
+
+    cl = c->send_chain(c, cl, 0);
+
+    if (cl == NGX_CHAIN_ERROR) {
+        c->error = 1;
+
+        if (!sc->blocked) {
+            ngx_post_event(wev, &ngx_posted_events);
+        }
+
+        return NGX_ERROR;
+    }
+
+    clcf = ngx_http_get_module_loc_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_core_module);
+
+    if (ngx_handle_write_event(wev, clcf->send_lowat) != NGX_OK) {
+        return NGX_ERROR; /* FIXME */
+    }
+
+    if (cl) {
+        ngx_add_timer(wev, clcf->send_timeout);
+
+    } else {
+        if (wev->timer_set) {
+            ngx_del_timer(wev);
+        }
+    }
+
+    for ( /* void */ ; out; out = out->next) {
+        if (out->handler(sc, out) != NGX_OK) {
+            out->blocked = 1;
+            out->priority = NGX_SPDY_HIGHEST_PRIORITY;
+            break;
+        }
+
+        ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                       "spdy frame sent: %p sid:%ui bl:%ui size:%uz",
+                       out, out->stream ? out->stream->id : 0,
+                       out->blocked, out->size);
+    }
+
+    frame = NULL;
+
+    for ( /* void */ ; out; out = fn) {
+        fn = out->next;
+        out->next = frame;
+        frame = out;
+    }
+
+    sc->last_out = frame;
+
+    return NGX_OK;
+}
+
+
+static void
+ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc)
+{
+    ngx_connection_t          *c;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    if (sc->last_out || sc->processing) {
+        return;
+    }
+
+    c = sc->connection;
+
+    if (c->error) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    if (c->buffered) {
+        return;
+    }
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+    if (sc->waiting) {
+        ngx_add_timer(c->read, sscf->recv_timeout);
+        return;
+    }
+
+    if (ngx_terminate || ngx_exiting) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    ngx_destroy_pool(sc->pool);
+
+    sc->pool = NULL;
+    sc->free_ctl_frames = NULL;
+    sc->free_fake_connections = NULL;
+
+#if (NGX_HTTP_SSL)
+    if (c->ssl) {
+        ngx_ssl_free_buffer(c);
+    }
+#endif
+
+    c->destroyed = 1;
+    c->idle = 1;
+    ngx_reusable_connection(c, 1);
+
+    c->write->handler = ngx_http_empty_handler;
+    c->read->handler = ngx_http_spdy_keepalive_handler;
+
+    if (c->write->timer_set) {
+        ngx_del_timer(c->write);
+    }
+
+    ngx_add_timer(c->read, sscf->keepalive_timeout);
+}
+
+
+static u_char *
+ngx_http_spdy_state_detect_settings(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end)
+{
+    if (end - pos < NGX_SPDY_FRAME_HEADER_SIZE) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_detect_settings);
+    }
+
+    /*
+     * Since this is the first frame in a buffer,
+     * then it is properly aligned
+     */
+
+    if (*(uint32_t *) pos == htonl(ngx_spdy_ctl_frame_head(NGX_SPDY_SETTINGS)))
+    {
+        sc->length = ngx_spdy_frame_length(htonl(((uint32_t *) pos)[1]));
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                       "spdy SETTINGS frame received, size: %uz", sc->length);
+
+        pos += NGX_SPDY_FRAME_HEADER_SIZE;
+
+        return ngx_http_spdy_state_settings(sc, pos, end);
+    }
+
+    ngx_http_spdy_send_settings(sc);
+
+    return ngx_http_spdy_state_head(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    uint32_t  head, flen;
+
+    if (end - pos < NGX_SPDY_FRAME_HEADER_SIZE) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_head);
+    }
+
+    head = ngx_spdy_frame_parse_uint32(pos);
+
+    pos += sizeof(uint32_t);
+
+    flen = ngx_spdy_frame_parse_uint32(pos);
+
+    sc->flags = ngx_spdy_frame_flags(flen);
+    sc->length = ngx_spdy_frame_length(flen);
+
+    pos += sizeof(uint32_t);
+
+    ngx_log_debug3(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy process frame head:%08Xd f:%ui l:%ui",
+                   head, sc->flags, sc->length);
+
+    if (ngx_spdy_ctl_frame_check(head)) {
+        switch (ngx_spdy_ctl_frame_type(head)) {
+
+        case NGX_SPDY_SYN_STREAM:
+            return ngx_http_spdy_state_syn_stream(sc, pos, end);
+
+        case NGX_SPDY_SYN_REPLY:
+            return ngx_http_spdy_state_protocol_error(sc);
+
+        case NGX_SPDY_RST_STREAM:
+            return ngx_http_spdy_state_rst_stream(sc, pos, end);
+
+        case NGX_SPDY_SETTINGS:
+            return ngx_http_spdy_state_skip(sc, pos, end);
+
+        case NGX_SPDY_NOOP:
+            return ngx_http_spdy_state_noop(sc, pos, end);
+
+        case NGX_SPDY_PING:
+            return ngx_http_spdy_state_ping(sc, pos, end);
+
+        case NGX_SPDY_GOAWAY:
+            return ngx_http_spdy_state_skip(sc, pos, end); /* TODO */
+
+        case NGX_SPDY_HEADERS:
+            return ngx_http_spdy_state_protocol_error(sc);
+
+        default: /* TODO logging */
+            return ngx_http_spdy_state_skip(sc, pos, end);
+        }
+    }
+
+    if (ngx_spdy_data_frame_check(head)) {
+        sc->stream = ngx_http_spdy_get_stream_by_id(sc, head);
+        return ngx_http_spdy_state_data(sc, pos, end);
+    }
+
+
+    /* TODO version & type check */
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy unknown frame");
+
+    return ngx_http_spdy_state_protocol_error(sc);
+}
+
+
+static u_char *
+ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    ngx_uint_t                 sid, prio;
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    if (end - pos < NGX_SPDY_SYN_STREAM_SIZE) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_syn_stream);
+    }
+
+    if (sc->length <= NGX_SPDY_SYN_STREAM_SIZE) {
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    sc->length -= NGX_SPDY_SYN_STREAM_SIZE;
+
+    sid = ngx_spdy_frame_parse_sid(pos);
+    prio = pos[8] >> 6;
+
+    pos += NGX_SPDY_SYN_STREAM_SIZE;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy SYN_STREAM frame sid:%ui prio:%ui", sid, prio);
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    if (sc->processing >= sscf->concurrent_streams) {
+
+        ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+                      "spdy concurrent streams excessed %ui", sc->processing);
+
+        if (ngx_http_spdy_send_rst_stream(sc, sid, NGX_SPDY_REFUSED_STREAM,
+                                          prio)
+            != NGX_OK)
+        {
+            return ngx_http_spdy_state_internal_error(sc);
+        }
+
+        return ngx_http_spdy_state_headers_skip(sc, pos, end);
+    }
+
+    stream = ngx_http_spdy_create_stream(sc, sid, prio);
+    if (stream == NULL) {
+        return ngx_http_spdy_state_internal_error(sc);
+    }
+
+    stream->in_closed = (sc->flags & NGX_SPDY_FLAG_FIN) ? 1 : 0;
+
+    stream->request->request_length = NGX_SPDY_FRAME_HEADER_SIZE
+                                      + NGX_SPDY_SYN_STREAM_SIZE
+                                      + sc->length;
+
+    sc->stream = stream;
+
+    sc->last_sid = sid;
+
+    return ngx_http_spdy_state_headers(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    int                  z;
+    size_t               size;
+    ngx_buf_t           *buf;
+    ngx_int_t            rc;
+    ngx_uint_t           complete;
+    ngx_http_request_t  *r;
+
+    size = end - pos;
+
+    if (size == 0) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_headers);
+    }
+
+    if (size >= sc->length) {
+        size = sc->length;
+        complete = 1;
+
+    } else {
+        complete = 0;
+    }
+
+    r = sc->stream->request;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy process HEADERS %uz of %uz", size, sc->length);
+
+    buf = r->header_in;
+
+    sc->zstream_in.next_in = pos;
+    sc->zstream_in.avail_in = size;
+    sc->zstream_in.next_out = buf->last;
+    sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+    z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+    if (z == Z_NEED_DICT) {
+        z = inflateSetDictionary(&sc->zstream_in, ngx_http_spdy_dict,
+                                 sizeof(ngx_http_spdy_dict));
+        if (z != Z_OK) {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "spdy inflateSetDictionary() failed: %d", z);
+            ngx_http_spdy_close_stream(sc->stream, 0);
+            return ngx_http_spdy_state_protocol_error(sc);
+        }
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "spdy inflateSetDictionary(): %d", z);
+
+        z = sc->zstream_in.avail_in ? inflate(&sc->zstream_in, Z_NO_FLUSH)
+                                    : Z_OK;
+    }
+
+    if (z != Z_OK) {
+        ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                      "spdy inflate() failed: %d", z);
+        ngx_http_spdy_close_stream(sc->stream, 0);
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy inflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+                   sc->zstream_in.next_in, sc->zstream_in.next_out,
+                   sc->zstream_in.avail_in, sc->zstream_in.avail_out,
+                   z);
+
+    sc->length -= sc->zstream_in.next_in - pos;
+    pos = sc->zstream_in.next_in;
+
+    buf->last = sc->zstream_in.next_out;
+
+    if (r->headers_in.headers.part.elts == NULL) {
+
+        if (buf->last - buf->pos < NGX_SPDY_NV_NUM_SIZE) {
+            return ngx_http_spdy_state_save(sc, pos, end,
+                                            ngx_http_spdy_state_headers);
+        }
+
+        sc->headers = ngx_spdy_frame_parse_uint16(buf->pos);
+
+        buf->pos += NGX_SPDY_NV_NUM_SIZE;
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "spdy headers count: %ui", sc->headers);
+
+        if (ngx_list_init(&r->headers_in.headers, r->pool, sc->headers + 3,
+                          sizeof(ngx_table_elt_t))
+            != NGX_OK)
+        {
+            ngx_http_spdy_close_stream(sc->stream,
+                                       NGX_HTTP_INTERNAL_SERVER_ERROR);
+            return ngx_http_spdy_state_headers_error(sc, pos, end);
+        }
+
+        if (ngx_array_init(&r->headers_in.cookies, r->pool, 2,
+                           sizeof(ngx_table_elt_t *))
+            != NGX_OK)
+        {
+            ngx_http_spdy_close_stream(sc->stream,
+                                       NGX_HTTP_INTERNAL_SERVER_ERROR);
+            return ngx_http_spdy_state_headers_error(sc, pos, end);
+        }
+    }
+
+    while (sc->headers) {
+
+        rc = ngx_http_spdy_parse_header(r);
+
+        switch (rc) {
+
+        case NGX_DONE:
+            sc->headers--;
+
+        case NGX_OK:
+            break;
+
+        case NGX_AGAIN:
+
+            if (sc->zstream_in.avail_in) {
+
+                rc = ngx_http_spdy_alloc_large_header_buffer(r);
+
+                if (rc == NGX_DECLINED) {
+                    /* TODO logging */
+                    ngx_http_finalize_request(r,
+                                            NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
+                    return ngx_http_spdy_state_headers_error(sc, pos, end);
+                }
+
+                if (rc != NGX_OK) {
+                    ngx_http_spdy_close_stream(sc->stream,
+                                               NGX_HTTP_INTERNAL_SERVER_ERROR);
+                    return ngx_http_spdy_state_headers_error(sc, pos, end);
+                }
+
+                buf = r->header_in;
+
+                sc->zstream_in.next_out = buf->last;
+                sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+                z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+                if (z != Z_OK) {
+                    ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                                  "spdy inflate() failed: %d", z);
+                    ngx_http_spdy_close_stream(sc->stream, 0);
+                    return ngx_http_spdy_state_protocol_error(sc);
+                }
+
+                sc->length -= sc->zstream_in.next_in - pos;
+                pos = sc->zstream_in.next_in;
+
+                buf->last = sc->zstream_in.next_out;
+
+                continue;
+            }
+
+            if (complete) {
+                /* TODO: improve error message */
+                ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                               "spdy again while last chunk");
+                ngx_http_spdy_close_stream(sc->stream, 0);
+                return ngx_http_spdy_state_protocol_error(sc);
+            }
+
+            return ngx_http_spdy_state_save(sc, pos, end,
+                                            ngx_http_spdy_state_headers);
+
+        case NGX_HTTP_PARSE_INVALID_REQUEST:
+
+            /* TODO: improve error message */
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent invalid header line");
+
+            ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+
+            return ngx_http_spdy_state_headers_error(sc, pos, end);
+
+        default: /* NGX_HTTP_PARSE_INVALID_HEADER */
+
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent invalid HEADERS spdy frame");
+            ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+            return ngx_http_spdy_state_protocol_error(sc);
+        }
+
+        /* a header line has been parsed successfully */
+
+        rc = ngx_http_spdy_handle_request_header(r);
+
+        if (rc != NGX_OK) {
+            if (rc == NGX_HTTP_PARSE_INVALID_HEADER) {
+                ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                              "client sent invalid HEADERS spdy frame");
+                ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+                return ngx_http_spdy_state_protocol_error(sc);
+            }
+
+            if (rc == NGX_HTTP_PARSE_INVALID_REQUEST) {
+                ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+            }
+
+            return ngx_http_spdy_state_headers_error(sc, pos, end);
+        }
+    }
+
+    if (buf->pos != buf->last) {
+        /* TODO: improve error message */
+        ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "end %ui %p %p", complete, buf->pos, buf->last);
+        ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    if (!complete) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_headers);
+    }
+
+    ngx_http_spdy_run_request(r);
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    if (sc->connection->error) {
+        return ngx_http_spdy_state_internal_error(sc);
+    }
+
+    return ngx_http_spdy_state_headers_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    int     n;
+    size_t  size;
+    u_char  buffer[NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE];
+
+    if (sc->length == 0) {
+        return ngx_http_spdy_state_complete(sc, pos, end);
+    }
+
+    size = end - pos;
+
+    if (size == 0) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_headers_skip);
+    }
+
+    sc->zstream_in.next_in = pos;
+    sc->zstream_in.avail_in = (size < sc->length) ? size : sc->length;
+
+    while (sc->zstream_in.avail_in) {
+        sc->zstream_in.next_out = buffer;
+        sc->zstream_in.avail_out = NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE;
+
+        n = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                       "spdy inflate(): %d", n);
+
+        if (n != Z_OK) {
+            /* TODO: logging */
+            return ngx_http_spdy_state_protocol_error(sc);
+        }
+    }
+
+    pos = sc->zstream_in.next_in;
+
+    if (size < sc->length) {
+        sc->length -= size;
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_headers_skip);
+    }
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    size_t                     size;
+    ssize_t                    n;
+    ngx_buf_t                 *buf;
+    ngx_int_t                  rc;
+    ngx_uint_t                 complete;
+    ngx_temp_file_t           *tf;
+    ngx_http_request_t        *r;
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_request_body_t   *rb;
+    ngx_http_core_loc_conf_t  *clcf;
+
+    stream = sc->stream;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy DATA frame");
+
+    if (stream == NULL) {
+        return ngx_http_spdy_state_skip(sc, pos, end);
+    }
+
+    if (stream->in_closed) {
+        /* TODO log */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    if (stream->skip_data) {
+
+        if (sc->flags & NGX_SPDY_FLAG_FIN) {
+            stream->in_closed = 1;
+        }
+
+        /* TODO log and accounting */
+        return ngx_http_spdy_state_skip(sc, pos, end);
+    }
+
+    size = end - pos;
+
+    if (size >= sc->length) {
+        size = sc->length;
+        complete = 1;
+
+    } else {
+        sc->length -= size;
+        complete = 0;
+    }
+
+    r = stream->request;
+
+    if (r->request_body == NULL
+        && ngx_http_spdy_init_request_body(r) != NGX_OK)
+    {
+        stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+        return ngx_http_spdy_state_skip(sc, pos, end);
+    }
+
+    rb = r->request_body;
+    tf = rb->temp_file;
+    buf = rb->buf;
+
+    if (size) {
+        rb->rest += size;
+
+        if (r->headers_in.content_length_n != -1
+            && r->headers_in.content_length_n < rb->rest)
+        {
+            /* TODO logging */
+            stream->skip_data = NGX_SPDY_DATA_ERROR;
+            goto error;
+
+        } else {
+            clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+            if (clcf->client_max_body_size
+                && clcf->client_max_body_size < rb->rest)
+            {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "client intended to send too large chunked "
+                              "body: %O bytes",
+                              rb->rest);
+
+                stream->skip_data = NGX_SPDY_DATA_ERROR;
+                goto error;
+            }
+        }
+
+        if (tf) {
+            buf->start = pos;
+            buf->pos = pos;
+
+            pos += size;
+
+            buf->end = pos;
+            buf->last = pos;
+
+            n = ngx_write_chain_to_temp_file(tf, rb->bufs);
+
+            /* TODO: n == 0 or not complete and level event */
+
+            if (n == NGX_ERROR) {
+                stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+                goto error;
+            }
+
+            tf->offset += n;
+
+        } else {
+            buf->last = ngx_cpymem(buf->last, pos, size);
+            pos += size;
+        }
+
+        r->request_length += size;
+    }
+
+    if (!complete) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_data);
+    }
+
+    if (sc->flags & NGX_SPDY_FLAG_FIN) {
+
+        stream->in_closed = 1;
+
+        if (tf) {
+            ngx_memzero(buf, sizeof(ngx_buf_t));
+
+            buf->in_file = 1;
+            buf->file_last = tf->file.offset;
+            buf->file = &tf->file;
+
+            rb->buf = NULL;
+        }
+
+        if (r->headers_in.content_length_n < 0) {
+            r->headers_in.content_length_n = rb->rest;
+        }
+
+        if (rb->post_handler) {
+            rb->post_handler(r);
+        }
+    }
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+
+error:
+
+    if (rb->post_handler) {
+
+        if (stream->skip_data == NGX_SPDY_DATA_ERROR) {
+            rc = (r->headers_in.content_length_n == -1)
+                 ? NGX_HTTP_REQUEST_ENTITY_TOO_LARGE
+                 : NGX_HTTP_BAD_REQUEST;
+
+        } else {
+            rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
+        }
+
+        ngx_http_finalize_request(r, rc);
+    }
+
+    return ngx_http_spdy_state_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    ngx_uint_t               sid, status;
+    ngx_event_t             *ev;
+    ngx_connection_t        *fc;
+    ngx_http_request_t      *r;
+    ngx_http_spdy_stream_t  *stream;
+
+    if (end - pos < NGX_SPDY_RST_STREAM_SIZE) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_rst_stream);
+    }
+
+    if (sc->length != NGX_SPDY_RST_STREAM_SIZE) {
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    sid = ngx_spdy_frame_parse_sid(pos);
+
+    pos += NGX_SPDY_SID_SIZE;
+
+    status = ngx_spdy_frame_parse_uint32(pos);
+
+    pos += sizeof(uint32_t);
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy RST_STREAM sid:%ui st:%ui", sid, status);
+
+
+    switch (status) {
+
+    case NGX_SPDY_PROTOCOL_ERROR:
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+
+    case NGX_SPDY_INVALID_STREAM:
+        /* TODO */
+        break;
+
+    case NGX_SPDY_REFUSED_STREAM:
+        /* TODO */
+        break;
+
+    case NGX_SPDY_UNSUPPORTED_VERSION:
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+
+    case NGX_SPDY_CANCEL:
+    case NGX_SPDY_INTERNAL_ERROR:
+        stream = ngx_http_spdy_get_stream_by_id(sc, sid);
+        if (stream == NULL) {
+            /* TODO false cancel */
+            break;
+        }
+
+        stream->in_closed = 1;
+        stream->out_closed = 1;
+
+        r = stream->request;
+
+        fc = r->connection;
+        fc->error = 1;
+
+        ev = fc->read;
+        ev->handler(ev);
+
+        break;
+
+    case NGX_SPDY_FLOW_CONTROL_ERROR:
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+
+    default:
+        /* TODO */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    u_char                     *p;
+    ngx_buf_t                  *buf;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    if (end - pos < NGX_SPDY_PING_SIZE) {
+        return ngx_http_spdy_state_save(sc, pos, end,
+                                        ngx_http_spdy_state_ping);
+    }
+
+    if (sc->length != NGX_SPDY_PING_SIZE) {
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy PING frame");
+
+    frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_PING_SIZE,
+                                        NGX_SPDY_HIGHEST_PRIORITY);
+    if (frame == NULL) {
+        return ngx_http_spdy_state_internal_error(sc);
+    }
+
+    buf = frame->first->buf;
+
+    p = buf->pos;
+
+    p = ngx_spdy_frame_write_head(p, NGX_SPDY_PING);
+    p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_PING_SIZE);
+
+    p = ngx_cpymem(p, pos, NGX_SPDY_PING_SIZE);
+
+    buf->last = p;
+
+    ngx_http_spdy_queue_frame(sc, frame);
+
+    pos += NGX_SPDY_PING_SIZE;
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    size_t  size;
+
+    size = end - pos;
+
+    if (size < sc->length) {
+        sc->length -= size;
+        return ngx_http_spdy_state_save(sc, end, end,
+                                        ngx_http_spdy_state_skip);
+    }
+
+    return ngx_http_spdy_state_complete(sc, pos + sc->length, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    ngx_uint_t                 v;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    if (sc->headers == 0) {
+
+        if (end - pos < NGX_SPDY_SETTINGS_NUM_SIZE) {
+            return ngx_http_spdy_state_save(sc, pos, end,
+                                            ngx_http_spdy_state_settings);
+        }
+
+        sc->headers = ngx_spdy_frame_parse_uint32(pos);
+
+        pos += NGX_SPDY_SETTINGS_NUM_SIZE;
+        sc->length -= NGX_SPDY_SETTINGS_NUM_SIZE;
+
+        if (sc->length < sc->headers * NGX_SPDY_SETTINGS_PAIR_SIZE) {
+            /* TODO logging */
+            return ngx_http_spdy_state_protocol_error(sc);
+        }
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                       "spdy SETTINGS frame consists of %ui entries",
+                       sc->headers);
+    }
+
+    while (sc->headers) {
+        if (end - pos < NGX_SPDY_SETTINGS_PAIR_SIZE) {
+            return ngx_http_spdy_state_save(sc, pos, end,
+                                            ngx_http_spdy_state_settings);
+        }
+
+        sc->headers--;
+
+        if (pos[0] != NGX_SPDY_SETTINGS_MAX_STREAMS) {
+            pos += NGX_SPDY_SETTINGS_PAIR_SIZE;
+            sc->length -= NGX_SPDY_SETTINGS_PAIR_SIZE;
+            continue;
+        }
+
+        v = ngx_spdy_frame_parse_uint32(pos + NGX_SPDY_SETTINGS_IDF_SIZE);
+
+        sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                            ngx_http_spdy_module);
+
+        if (v != sscf->concurrent_streams) {
+            ngx_http_spdy_send_settings(sc);
+        }
+
+        return ngx_http_spdy_state_skip(sc, pos, end);
+    }
+
+    ngx_http_spdy_send_settings(sc);
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_noop(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    if (sc->length) {
+        /* TODO logging */
+        return ngx_http_spdy_state_protocol_error(sc);
+    }
+
+    return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc, u_char *pos,
+    u_char *end)
+{
+    sc->handler = ngx_http_spdy_state_head;
+    return pos;
+}
+
+
+static u_char *
+ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler)
+{
+#if (NGX_DEBUG)
+    if (end - pos > NGX_SPDY_STATE_BUFFER_SIZE) {
+        ngx_log_error(NGX_LOG_ALERT, sc->connection->log, 0,
+                      "spdy state buffer overflow: "
+                      "%i bytes required", end - pos);
+        return ngx_http_spdy_state_internal_error(sc);
+    }
+#endif
+
+    ngx_memcpy(sc->buffer, pos, NGX_SPDY_STATE_BUFFER_SIZE);
+
+    sc->buffer_used = end - pos;
+    sc->handler = handler;
+    sc->waiting = 1;
+
+    return end;
+}
+
+
+static u_char *
+ngx_http_spdy_state_protocol_error(ngx_http_spdy_connection_t *sc)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy state protocol error");
+
+    /* TODO */
+    ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+    return NULL;
+}
+
+
+static u_char *
+ngx_http_spdy_state_internal_error(ngx_http_spdy_connection_t *sc)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy state internal error");
+
+    /* TODO */
+    ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+    return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t sid,
+    ngx_uint_t status, ngx_uint_t priority)
+{
+    u_char                     *p;
+    ngx_buf_t                  *buf;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    if (sc->connection->error) {
+        return NGX_OK;
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy write RST_STREAM sid:%ui st:%ui", sid, status);
+
+    frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_RST_STREAM_SIZE,
+                                        priority);
+    if (frame == NULL) {
+        return NGX_ERROR;
+    }
+
+    buf = frame->first->buf;
+
+    p = buf->pos;
+
+    p = ngx_spdy_frame_write_head(p, NGX_SPDY_RST_STREAM);
+    p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_RST_STREAM_SIZE);
+
+    p = ngx_spdy_frame_write_sid(p, sid);
+    p = ngx_spdy_frame_aligned_write_uint32(p, status);
+
+    buf->last = p;
+
+    ngx_http_spdy_queue_frame(sc, frame);
+
+    return NGX_OK;
+}
+
+
+#if 0
+static ngx_int_t
+ngx_http_spdy_send_goaway(ngx_http_spdy_connection_t *sc)
+{
+    u_char                     *p;
+    ngx_buf_t                  *buf;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy create GOAWAY sid:%ui", sc->last_sid);
+
+    frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_GOAWAY_SIZE,
+                                        NGX_SPDY_HIGHEST_PRIORITY);
+    if (frame == NULL) {
+        return NGX_ERROR;
+    }
+
+    buf = frame->first->buf;
+
+    p = buf->pos;
+
+    p = ngx_spdy_frame_write_head(p, NGX_SPDY_GOAWAY);
+    p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_GOAWAY_SIZE);
+
+    p = ngx_spdy_frame_write_sid(p, sc->last_sid);
+
+    buf->last = p;
+
+    ngx_http_spdy_queue_frame(sc, frame);
+
+    return NGX_OK;
+}
+#endif
+
+
+static ngx_int_t
+ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc)
+{
+    u_char                     *p;
+    ngx_buf_t                  *buf;
+    ngx_pool_t                 *pool;
+    ngx_chain_t                *cl;
+    ngx_http_spdy_srv_conf_t   *sscf;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy create SETTINGS frame");
+
+    pool = sc->connection->pool;
+
+    frame = ngx_palloc(pool, sizeof(ngx_http_spdy_out_frame_t));
+    if (frame == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl = ngx_alloc_chain_link(pool);
+    if (cl == NULL) {
+        return NGX_ERROR;
+    }
+
+    buf = ngx_create_temp_buf(pool, NGX_SPDY_FRAME_HEADER_SIZE
+                                    + NGX_SPDY_SETTINGS_NUM_SIZE
+                                    + NGX_SPDY_SETTINGS_PAIR_SIZE);
+    if (buf == NULL) {
+        return NGX_ERROR;
+    }
+
+    buf->last_buf = 1;
+
+    cl->buf = buf;
+    cl->next = NULL;
+
+    frame->first = cl;
+    frame->last = cl;
+    frame->handler = ngx_http_spdy_settings_frame_handler;
+#if (NGX_DEBUG)
+    frame->stream = NULL;
+    frame->size = NGX_SPDY_FRAME_HEADER_SIZE
+                  + NGX_SPDY_SETTINGS_NUM_SIZE
+                  + NGX_SPDY_SETTINGS_PAIR_SIZE;
+#endif
+    frame->priority = NGX_SPDY_HIGHEST_PRIORITY;
+    frame->blocked = 0;
+
+    p = buf->pos;
+
+    p = ngx_spdy_frame_write_head(p, NGX_SPDY_SETTINGS);
+    p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_CLEAR_SETTINGS,
+                                              NGX_SPDY_SETTINGS_NUM_SIZE
+                                              + NGX_SPDY_SETTINGS_PAIR_SIZE);
+
+    p = ngx_spdy_frame_aligned_write_uint32(p, 1);
+    p = ngx_spdy_frame_aligned_write_uint32(p,
+                                            NGX_SPDY_SETTINGS_MAX_STREAMS << 24
+                                            | NGX_SPDY_SETTINGS_FLAG_PERSIST);
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    p = ngx_spdy_frame_aligned_write_uint32(p, sscf->concurrent_streams);
+
+    buf->last = p;
+
+    ngx_http_spdy_queue_frame(sc, frame);
+
+    return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_spdy_settings_frame_handler(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_buf_t  *buf;
+
+    buf = frame->first->buf;
+
+    if (buf->pos != buf->last) {
+        return NGX_AGAIN;
+    }
+
+    ngx_free_chain(sc->pool, frame->first);
+
+    return NGX_OK;
+}
+
+
+static ngx_http_spdy_out_frame_t *
+ngx_http_spdy_get_ctl_frame(ngx_http_spdy_connection_t *sc, size_t size,
+    ngx_uint_t priority)
+{
+    ngx_chain_t                *cl;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    frame = sc->free_ctl_frames;
+
+    if (frame) {
+        sc->free_ctl_frames = frame->free;
+
+        cl = frame->first;
+        cl->buf->pos = cl->buf->start;
+
+    } else {
+        frame = ngx_palloc(sc->pool, sizeof(ngx_http_spdy_out_frame_t));
+        if (frame == NULL) {
+            return NULL;
+        }
+
+        cl = ngx_alloc_chain_link(sc->pool);
+        if (cl == NULL) {
+            return NULL;
+        }
+
+        cl->buf = ngx_create_temp_buf(sc->pool,
+                                      NGX_SPDY_CTL_FRAME_BUFFER_SIZE);
+        if (cl->buf == NULL) {
+            return NULL;
+        }
+
+        cl->buf->last_buf = 1;
+
+        frame->first = cl;
+        frame->last = cl;
+        frame->handler = ngx_http_spdy_ctl_frame_handler;
+    }
+
+    frame->free = NULL;
+
+#if (NGX_DEBUG)
+    if (size > NGX_SPDY_CTL_FRAME_BUFFER_SIZE - NGX_SPDY_FRAME_HEADER_SIZE) {
+        ngx_log_error(NGX_LOG_ALERT, sc->pool->log, 0,
+                      "requested control frame is too big: %z", size);
+        return NULL;
+    }
+
+    frame->stream = NULL;
+    frame->size = size;
+#endif
+
+    frame->priority = priority;
+    frame->blocked = 0;
+
+    return frame;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_ctl_frame_handler(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_buf_t  *buf;
+
+    buf = frame->first->buf;
+
+    if (buf->pos != buf->last) {
+        return NGX_AGAIN;
+    }
+
+    frame->free = sc->free_ctl_frames;
+    sc->free_ctl_frames = frame;
+
+    return NGX_OK;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_create_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t id,
+    ngx_uint_t priority)
+{
+    ngx_log_t                 *log;
+    ngx_uint_t                 index;
+    ngx_event_t               *rev, *wev;
+    ngx_connection_t          *fc;
+    ngx_http_log_ctx_t        *ctx;
+    ngx_http_request_t        *r;
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_core_srv_conf_t  *cscf;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    fc = sc->free_fake_connections;
+
+    if (fc) {
+        sc->free_fake_connections = fc->data;
+
+        rev = fc->read;
+        wev = fc->write;
+        log = fc->log;
+        ctx = log->data;
+
+    } else {
+        fc = ngx_palloc(sc->pool, sizeof(ngx_connection_t));
+        if (fc == NULL) {
+            return NULL;
+        }
+
+        rev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+        if (rev == NULL) {
+            return NULL;
+        }
+
+        wev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+        if (wev == NULL) {
+            return NULL;
+        }
+
+        log = ngx_palloc(sc->pool, sizeof(ngx_log_t));
+        if (log == NULL) {
+            return NULL;
+        }
+
+        ctx = ngx_palloc(sc->pool, sizeof(ngx_http_log_ctx_t));
+        if (ctx == NULL) {
+            return NULL;
+        }
+
+        ctx->connection = fc;
+        ctx->request = NULL;
+    }
+
+    ngx_memcpy(log, sc->connection->log, sizeof(ngx_log_t));
+
+    log->data = ctx;
+
+    ngx_memzero(rev, sizeof(ngx_event_t));
+
+    rev->data = fc;
+    rev->ready = 1;
+    rev->handler = ngx_http_empty_handler;
+    rev->log = log;
+
+    ngx_memcpy(wev, rev, sizeof(ngx_event_t));
+
+    wev->write = 1;
+
+    ngx_memcpy(fc, sc->connection, sizeof(ngx_connection_t));
+
+    fc->data = sc->http_connection;
+    fc->read = rev;
+    fc->write = wev;
+    fc->sent = 0;
+    fc->log = log;
+    fc->buffered = 0;
+    fc->sndlowat = 1;
+
+    r = ngx_http_create_request(fc);
+    if (r == NULL) {
+        return NULL;
+    }
+
+    r->valid_location = 1;
+
+    fc->data = r;
+    sc->connection->requests++;
+
+    cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+    r->header_in = ngx_create_temp_buf(r->pool,
+                                       cscf->client_header_buffer_size);
+    if (r->header_in == NULL) {
+        ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return NULL;
+    }
+
+    r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
+
+    stream = ngx_pcalloc(r->pool, sizeof(ngx_http_spdy_stream_t));
+    if (stream == NULL) {
+        ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return NULL;
+    }
+
+    r->spdy_stream = stream;
+
+    stream->id = id;
+    stream->request = r;
+    stream->connection = sc;
+    stream->priority = priority;
+
+    sscf = ngx_http_get_module_srv_conf(r, ngx_http_spdy_module);
+
+    index = ngx_http_spdy_stream_index(sscf, id);
+
+    stream->index = sc->streams_index[index];
+    sc->streams_index[index] = stream;
+
+    sc->processing++;
+
+    return stream;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_get_stream_by_id(ngx_http_spdy_connection_t *sc,
+    ngx_uint_t sid)
+{
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    stream = sc->streams_index[ngx_http_spdy_stream_index(sscf, sid)];
+
+    while (stream) {
+        if (stream->id == sid) {
+            return stream;
+        }
+
+        stream = stream->index;
+    }
+
+    return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_header(ngx_http_request_t *r)
+{
+    u_char                     *p, *end, ch;
+    ngx_uint_t                  len, hash;
+    ngx_http_core_srv_conf_t   *cscf;
+
+    enum {
+        sw_name_len = 0,
+        sw_name,
+        sw_value_len,
+        sw_value
+    } state;
+
+    state = r->state;
+
+    p = r->header_in->pos;
+    end = r->header_in->last;
+
+    switch (state) {
+
+    case sw_name_len:
+
+        if (end - p < NGX_SPDY_NV_NLEN_SIZE) {
+            return NGX_AGAIN;
+        }
+
+        len = ngx_spdy_frame_parse_uint16(p);
+
+        if (!len) {
+            return NGX_HTTP_PARSE_INVALID_HEADER;
+        }
+
+        p += NGX_SPDY_NV_NLEN_SIZE;
+
+        r->header_name_end = p + len;
+        r->lowcase_index = len;
+        r->invalid_header = 0;
+
+        state = sw_name;
+
+        /* fall through */
+
+    case sw_name:
+
+        if (r->header_name_end > end) {
+            break;
+        }
+
+        cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+        r->header_name_start = p;
+
+        hash = 0;
+
+        for ( /* void */ ; p != r->header_name_end; p++) {
+
+            ch = *p;
+
+            hash = ngx_hash(hash, ch);
+
+            if ((ch >= 'a' && ch <= 'z')
+                || (ch == '-')
+                || (ch >= '0' && ch <= '9')
+                || (ch == '_' && cscf->underscores_in_headers))
+            {
+                continue;
+            }
+
+            switch (ch) {
+            case '\0':
+            case LF:
+            case CR:
+            case ':':
+                return NGX_HTTP_PARSE_INVALID_REQUEST;
+            }
+
+            if (ch >= 'A' && ch <= 'Z') {
+                return NGX_HTTP_PARSE_INVALID_HEADER;
+            }
+
+            r->invalid_header = 1;
+        }
+
+        r->header_hash = hash;
+
+        state = sw_value_len;
+
+        /* fall through */
+
+    case sw_value_len:
+
+        if (end - p < NGX_SPDY_NV_VLEN_SIZE) {
+            break;
+        }
+
+        len = ngx_spdy_frame_parse_uint16(p);
+
+        if (!len) {
+            return NGX_ERROR;
+        }
+
+        p += NGX_SPDY_NV_VLEN_SIZE;
+
+        r->header_end = p + len;
+
+        state = sw_value;
+
+        /* fall through */
+
+    case sw_value:
+
+        if (r->header_end > end) {
+            break;
+        }
+
+        r->header_start = p;
+
+        for ( /* void */ ; p != r->header_end; p++) {
+
+            ch = *p;
+
+            if (ch == '\0') {
+
+                if (p == r->header_start) {
+                    return NGX_ERROR;
+                }
+
+                r->header_size = p - r->header_start;
+                r->header_in->pos = p + 1;
+
+                return NGX_OK;
+            }
+
+            if (ch == CR || ch == LF) {
+                return NGX_HTTP_PARSE_INVALID_HEADER;
+            }
+        }
+
+        r->header_size = p - r->header_start;
+        r->header_in->pos = p;
+
+        r->state = 0;
+
+        return NGX_DONE;
+    }
+
+    r->header_in->pos = p;
+    r->state = state;
+
+    return NGX_AGAIN;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r)
+{
+    u_char                    *old, *new;
+    size_t                     rest;
+    ngx_buf_t                 *buf;
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_core_srv_conf_t  *cscf;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy alloc large header buffer");
+
+    stream = r->spdy_stream;
+
+    cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+    if (stream->header_buffers
+        == (ngx_uint_t) cscf->large_client_header_buffers.num)
+    {
+        return NGX_DECLINED;
+    }
+
+    rest = r->header_in->last - r->header_in->pos;
+
+    if (rest >= cscf->large_client_header_buffers.size) {
+        return NGX_DECLINED;
+    }
+
+    buf = ngx_create_temp_buf(r->pool, cscf->large_client_header_buffers.size);
+    if (buf == NULL) {
+        return NGX_ERROR;
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy large header alloc: %p %uz",
+                   buf->pos, buf->end - buf->last);
+
+    old = r->header_in->pos;
+    new = buf->pos;
+
+    if (rest) {
+        buf->last = ngx_cpymem(new, old, rest);
+    }
+
+    if (r->header_name_end > old) {
+        r->header_name_end = new + (r->header_name_end - old);
+
+    } else if (r->header_end > old) {
+        r->header_end = new + (r->header_end - old);
+    }
+
+    r->header_in = buf;
+
+    stream->header_buffers++;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_handle_request_header(ngx_http_request_t *r)
+{
+    ngx_uint_t                       i;
+    ngx_table_elt_t                 *h;
+    ngx_http_core_srv_conf_t        *cscf;
+    ngx_http_spdy_request_header_t  *sh;
+
+    if (r->invalid_header) {
+        cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+        if (cscf->ignore_invalid_headers) {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent invalid header: \"%*s\"",
+                          r->header_end - r->header_name_start,
+                          r->header_name_start);
+            return NGX_OK;
+        }
+
+    } else {
+        for (i = 0; i < NGX_SPDY_REQUEST_HEADERS; i++) {
+            sh = &ngx_http_spdy_request_headers[i];
+
+            if (sh->hash != r->header_hash
+                || sh->len != r->lowcase_index
+                || ngx_strncmp(sh->header, r->header_name_start,
+                               r->lowcase_index)
+                   != 0)
+            {
+                continue;
+            }
+
+            return sh->handler(r);
+        }
+    }
+
+    h = ngx_list_push(&r->headers_in.headers);
+    if (h == NULL) {
+        ngx_http_spdy_close_stream(r->spdy_stream,
+                                   NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return NGX_ERROR;
+    }
+
+    h->hash = r->header_hash;
+
+    h->key.len = r->lowcase_index;
+    h->key.data = r->header_name_start;
+    h->key.data[h->key.len] = '\0';
+
+    h->value.len = r->header_size;
+    h->value.data = r->header_start;
+    h->value.data[h->value.len] = '\0';
+
+    h->lowcase_key = h->key.data;
+
+    return NGX_OK;
+}
+
+
+void
+ngx_http_spdy_request_headers_init()
+{
+    ngx_uint_t                       i;
+    ngx_http_spdy_request_header_t  *h;
+
+    for (i = 0; i < NGX_SPDY_REQUEST_HEADERS; i++) {
+        h = &ngx_http_spdy_request_headers[i];
+        h->hash = ngx_hash_key(h->header, h->len);
+    }
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_method(ngx_http_request_t *r)
+{
+    size_t         k, len;
+    ngx_uint_t     n;
+    const u_char  *p, *m;
+
+    /*
+     * This array takes less than 256 sequential bytes,
+     * and if typical CPU cache line size is 64 bytes,
+     * it is prefetched for 4 load operations.
+     */
+    static const struct {
+        u_char            len;
+        const u_char      method[11];
+        uint32_t          value;
+    } tests[] = {
+        { 3, "GET",       NGX_HTTP_GET },
+        { 4, "POST",      NGX_HTTP_POST },
+        { 4, "HEAD",      NGX_HTTP_HEAD },
+        { 7, "OPTIONS",   NGX_HTTP_OPTIONS },
+        { 8, "PROPFIND",  NGX_HTTP_PROPFIND },
+        { 3, "PUT",       NGX_HTTP_PUT },
+        { 5, "MKCOL",     NGX_HTTP_MKCOL },
+        { 6, "DELETE",    NGX_HTTP_DELETE },
+        { 4, "COPY",      NGX_HTTP_COPY },
+        { 4, "MOVE",      NGX_HTTP_MOVE },
+        { 9, "PROPPATCH", NGX_HTTP_PROPPATCH },
+        { 4, "LOCK",      NGX_HTTP_LOCK },
+        { 6, "UNLOCK",    NGX_HTTP_UNLOCK },
+        { 5, "PATCH",     NGX_HTTP_PATCH },
+        { 5, "TRACE",     NGX_HTTP_TRACE }
+    }, *test;
+
+    if (r->method_name.len) {
+        return NGX_HTTP_PARSE_INVALID_HEADER;
+    }
+
+    len = r->header_size;
+
+    r->method_name.len = len;
+    r->method_name.data = r->header_start;
+
+    test = tests;
+    n = sizeof(tests) / sizeof(tests[0]);
+
+    do {
+        if (len == test->len) {
+            p = r->method_name.data;
+            m = test->method;
+            k = len;
+
+            do {
+                if (*p++ != *m++) {
+                    goto next;
+                }
+            } while (--k);
+
+            r->method = test->value;
+            return NGX_OK;
+        }
+
+    next:
+        test++;
+
+    } while (--n);
+
+    p = r->method_name.data;
+
+    do {
+        if ((*p < 'A' || *p > 'Z') && *p != '_') {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent invalid method");
+            return NGX_HTTP_PARSE_INVALID_REQUEST;
+        }
+
+        p++;
+
+    } while (--len);
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_scheme(ngx_http_request_t *r)
+{
+    if (r->schema_start) {
+        return NGX_HTTP_PARSE_INVALID_HEADER;
+    }
+
+    r->schema_start = r->header_start;
+    r->schema_end = r->header_end;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_url(ngx_http_request_t *r)
+{
+    if (r->unparsed_uri.len) {
+        return NGX_HTTP_PARSE_INVALID_HEADER;
+    }
+
+    r->uri_start = r->header_start;
+    r->uri_end = r->header_end;
+
+    if (ngx_http_parse_uri(r) != NGX_OK) {
+        return NGX_HTTP_PARSE_INVALID_REQUEST;
+    }
+
+    if (ngx_http_process_request_uri(r) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_version(ngx_http_request_t *r)
+{
+    u_char  *p, ch;
+
+    if (r->http_protocol.len) {
+        return NGX_HTTP_PARSE_INVALID_HEADER;
+    }
+
+    p = r->header_start;
+
+    if (r->header_size < 8 || !(ngx_str5cmp(p, 'H', 'T', 'T', 'P', '/'))) {
+        return NGX_HTTP_PARSE_INVALID_REQUEST;
+    }
+
+    ch = *(p + 5);
+
+    if (ch < '1' || ch > '9') {
+        return NGX_HTTP_PARSE_INVALID_REQUEST;
+    }
+
+    r->http_major = ch - '0';
+
+    for (p += 6; p != r->header_end - 2; p++) {
+
+        ch = *p;
+
+        if (ch < '0' || ch > '9') {
+            return NGX_HTTP_PARSE_INVALID_REQUEST;
+        }
+
+        r->http_major = r->http_major * 10 + ch - '0';
+    }
+
+    if (*p != '.') {
+        return NGX_HTTP_PARSE_INVALID_REQUEST;
+    }
+
+    ch = *(p + 1);
+
+    if (ch < '0' || ch > '9') {
+        return NGX_HTTP_PARSE_INVALID_REQUEST;
+    }
+
+    r->http_minor = ch - '0';
+
+    for (p += 2; p != r->header_end; p++) {
+
+        ch = *p;
+
+        if (ch < '0' || ch > '9') {
+            return NGX_HTTP_PARSE_INVALID_REQUEST;
+        }
+
+        r->http_minor = r->http_minor * 10 + ch - '0';
+    }
+
+    r->http_protocol.len = r->header_size;
+    r->http_protocol.data = r->header_start;
+    r->http_version = r->http_major * 1000 + r->http_minor;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_construct_request_line(ngx_http_request_t *r)
+{
+    u_char  *p;
+
+    if (r->method_name.len == 0
+        || r->unparsed_uri.len == 0
+        || r->http_protocol.len == 0)
+    {
+        ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+        return NGX_ERROR;
+    }
+
+    r->request_line.len = r->method_name.len + 1
+                          + r->unparsed_uri.len + 1
+                          + r->http_protocol.len;
+
+    p = ngx_pnalloc(r->pool, r->request_line.len + 1);
+    if (p == NULL) {
+        ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return NGX_ERROR;
+    }
+
+    r->request_line.data = p;
+
+    p = ngx_cpymem(p, r->method_name.data, r->method_name.len);
+
+    *p++ = ' ';
+
+    p = ngx_cpymem(p, r->unparsed_uri.data, r->unparsed_uri.len);
+
+    *p++ = ' ';
+
+    ngx_memcpy(p, r->http_protocol.data, r->http_protocol.len + 1);
+
+    /* some modules expect the space character after method name */
+    r->method_name.data = r->request_line.data;
+
+    return NGX_OK;
+}
+
+
+static void
+ngx_http_spdy_run_request(ngx_http_request_t *r)
+{
+    ngx_uint_t                  i;
+    ngx_list_part_t            *part;
+    ngx_table_elt_t            *h;
+    ngx_http_header_t          *hh;
+    ngx_http_core_main_conf_t  *cmcf;
+
+    if (ngx_http_spdy_construct_request_line(r) != NGX_OK) {
+        return;
+    }
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy http request line: \"%V\"", &r->request_line);
+
+    cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
+
+    part = &r->headers_in.headers.part;
+    h = part->elts;
+
+    for (i = 0 ;; i++) {
+
+        if (i >= part->nelts) {
+            if (part->next == NULL) {
+                break;
+            }
+
+            part = part->next;
+            h = part->elts;
+            i = 0;
+        }
+
+        hh = ngx_hash_find(&cmcf->headers_in_hash, h[i].hash,
+                           h[i].lowcase_key, h[i].key.len);
+
+        if (hh && hh->handler(r, &h[i], hh->offset) != NGX_OK) {
+            return;
+        }
+
+        ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http header: \"%V: %V\"", &h[i].key, &h[i].value);
+    }
+
+    r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
+
+    if (ngx_http_process_request_header(r) != NGX_OK) {
+        return;
+    }
+
+    ngx_http_process_request(r);
+}
+
+
+static ngx_int_t
+ngx_http_spdy_init_request_body(ngx_http_request_t *r)
+{
+    ngx_buf_t                 *buf;
+    ngx_temp_file_t           *tf;
+    ngx_http_request_body_t   *rb;
+    ngx_http_core_loc_conf_t  *clcf;
+
+    rb = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t));
+    if (rb == NULL) {
+        return NGX_ERROR;
+    }
+
+    r->request_body = rb;
+
+    if (r->spdy_stream->in_closed) {
+        return NGX_OK;
+    }
+
+    rb->rest = r->headers_in.content_length_n;
+
+    clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+    if (r->request_body_in_file_only
+        || rb->rest > (off_t) clcf->client_body_buffer_size
+        || rb->rest < 0)
+    {
+        tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
+        if (tf == NULL) {
+            return NGX_ERROR;
+        }
+
+        tf->file.fd = NGX_INVALID_FILE;
+        tf->file.log = r->connection->log;
+        tf->path = clcf->client_body_temp_path;
+        tf->pool = r->pool;
+        tf->warn = "a client request body is buffered to a temporary file";
+        tf->log_level = r->request_body_file_log_level;
+        tf->persistent = r->request_body_in_persistent_file;
+        tf->clean = r->request_body_in_clean_file;
+
+        if (r->request_body_file_group_access) {
+            tf->access = 0660;
+        }
+
+        rb->temp_file = tf;
+
+        if (r->spdy_stream->in_closed
+            && ngx_create_temp_file(&tf->file, tf->path, tf->pool,
+                                    tf->persistent, tf->clean, tf->access)
+               != NGX_OK)
+        {
+            return NGX_ERROR;
+        }
+
+        buf = ngx_calloc_buf(r->pool);
+        if (buf == NULL) {
+            return NGX_ERROR;
+        }
+
+        if (rb->rest == 0) {
+            buf->in_file = 1;
+            buf->file = &tf->file;
+        } else {
+            rb->buf = buf;
+        }
+
+    } else {
+
+        if (rb->rest == 0) {
+            return NGX_OK;
+        }
+
+        buf = ngx_create_temp_buf(r->pool, (size_t) rb->rest);
+        if (buf == NULL) {
+            return NGX_ERROR;
+        }
+
+        rb->buf = buf;
+    }
+
+    rb->bufs = ngx_alloc_chain_link(r->pool);
+    if (rb->bufs == NULL) {
+        return NGX_ERROR;
+    }
+
+    rb->bufs->buf = buf;
+    rb->bufs->next = NULL;
+
+    rb->rest = 0;
+
+    return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_spdy_read_request_body(ngx_http_request_t *r,
+    ngx_http_client_body_handler_pt post_handler)
+{
+    ngx_http_spdy_stream_t  *stream;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy read request body");
+
+    stream = r->spdy_stream;
+
+    switch (stream->skip_data) {
+
+    case NGX_SPDY_DATA_DISCARD:
+        post_handler(r);
+        return NGX_OK;
+
+    case NGX_SPDY_DATA_ERROR:
+        if (r->headers_in.content_length_n == -1) {
+            return NGX_HTTP_REQUEST_ENTITY_TOO_LARGE;
+        } else {
+            return NGX_HTTP_BAD_REQUEST;
+        }
+
+    case NGX_SPDY_DATA_INTERNAL_ERROR:
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    if (!r->request_body && ngx_http_spdy_init_request_body(r) != NGX_OK) {
+        stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    if (stream->in_closed) {
+        post_handler(r);
+        return NGX_OK;
+    }
+
+    r->request_body->post_handler = post_handler;
+
+    return NGX_AGAIN;
+}
+
+
+void
+ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc)
+{
+    ngx_event_t                  *ev;
+    ngx_connection_t             *fc;
+    ngx_http_spdy_stream_t      **index, *s;
+    ngx_http_spdy_srv_conf_t     *sscf;
+    ngx_http_spdy_connection_t   *sc;
+
+    sc = stream->connection;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy close stream %ui, processing %ui",
+                   stream->id, sc->processing);
+
+    if (!stream->out_closed) {
+        if (ngx_http_spdy_send_rst_stream(sc, stream->id,
+                                          NGX_SPDY_INTERNAL_ERROR,
+                                          stream->priority)
+            != NGX_OK)
+        {
+            sc->connection->error = 1;
+        }
+    }
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    index = sc->streams_index + ngx_http_spdy_stream_index(sscf, stream->id);
+
+    for ( ;; ) {
+        s = *index;
+
+        if (s == NULL) {
+            break;
+        }
+
+        if (s == stream) {
+            *index = s->index;
+            break;
+        }
+
+        index = &s->index;
+    }
+
+    fc = stream->request->connection;
+
+    ngx_http_free_request(stream->request, rc);
+
+    ev = fc->read;
+
+    if (ev->active || ev->disabled) {
+        ngx_del_event(ev, NGX_READ_EVENT, 0);
+    }
+
+    if (ev->timer_set) {
+        ngx_del_timer(ev);
+    }
+
+    if (ev->prev) {
+        ngx_delete_posted_event(ev);
+    }
+
+    ev = fc->write;
+
+    if (ev->active || ev->disabled) {
+        ngx_del_event(ev, NGX_WRITE_EVENT, 0);
+    }
+
+    if (ev->timer_set) {
+        ngx_del_timer(ev);
+    }
+
+    if (ev->prev) {
+        ngx_delete_posted_event(ev);
+    }
+
+    fc->data = sc->free_fake_connections;
+    sc->free_fake_connections = fc;
+
+    sc->processing--;
+
+    if (sc->processing || sc->blocked) {
+        return;
+    }
+
+    ev = sc->connection->read;
+
+    ev->handler = ngx_http_spdy_handle_connection_handler;
+    ngx_post_event(ev, &ngx_posted_events);
+}
+
+
+static void
+ngx_http_spdy_handle_connection_handler(ngx_event_t *rev)
+{
+    ngx_connection_t  *c;
+
+    rev->handler = ngx_http_spdy_read_handler;
+
+    if (rev->ready) {
+        ngx_http_spdy_read_handler(rev);
+        return;
+    }
+
+    c = rev->data;
+
+    ngx_http_spdy_handle_connection(c->data);
+}
+
+
+static void
+ngx_http_spdy_keepalive_handler(ngx_event_t *rev)
+{
+    ngx_connection_t            *c;
+    ngx_http_spdy_srv_conf_t    *sscf;
+    ngx_http_spdy_connection_t  *sc;
+
+    c = rev->data;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy keepalive handler");
+
+    if (rev->timedout || c->close) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+#if (NGX_HAVE_KQUEUE)
+
+    if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
+        if (rev->pending_eof) {
+            c->log->handler = NULL;
+            ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
+                          "kevent() reported that client %V closed "
+                          "keepalive connection", &c->addr_text);
+#if (NGX_HTTP_SSL)
+            if (c->ssl) {
+                c->ssl->no_send_shutdown = 1;
+            }
+#endif
+            ngx_http_close_connection(c);
+            return;
+        }
+    }
+
+#endif
+
+    c->destroyed = 0;
+    c->idle = 0;
+    ngx_reusable_connection(c, 0);
+
+    sc = c->data;
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    sc->pool = ngx_create_pool(sscf->pool_size, sc->connection->log);
+    if (sc->pool == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    sc->streams_index = ngx_pcalloc(sc->pool,
+                                    ngx_http_spdy_streams_index_size(sscf)
+                                    * sizeof(ngx_http_spdy_stream_t *));
+    if (sc->streams_index == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    c->write->handler = ngx_http_spdy_write_handler;
+
+    rev->handler = ngx_http_spdy_read_handler;
+    ngx_http_spdy_read_handler(rev);
+}
+
+
+static void
+ngx_http_spdy_finalize_connection(ngx_http_spdy_connection_t *sc,
+    ngx_int_t rc)
+{
+    ngx_uint_t                 i, size;
+    ngx_event_t               *ev;
+    ngx_connection_t          *c, *fc;
+    ngx_http_request_t        *r;
+    ngx_http_spdy_stream_t    *stream;
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    c = sc->connection;
+
+    if (!sc->processing) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    c->error = 1;
+    c->read->handler = ngx_http_empty_handler;
+
+    sc->last_out = NULL;
+
+    sc->blocked = 1;
+
+    sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+                                        ngx_http_spdy_module);
+
+    size = ngx_http_spdy_streams_index_size(sscf);
+
+    for (i = 0; i < size; i++) {
+        stream = sc->streams_index[i];
+
+        while (stream) {
+            r = stream->request;
+
+            fc = r->connection;
+            fc->error = 1;
+
+            if (stream->waiting) {
+                r->blocked -= stream->waiting;
+                stream->waiting = 0;
+                ev = fc->write;
+
+            } else {
+                ev = fc->read;
+            }
+
+            stream = stream->index;
+
+            ev->eof = 1;
+            ev->handler(ev);
+        }
+    }
+
+    sc->blocked = 0;
+
+    if (sc->processing) {
+        return;
+    }
+
+    ngx_http_close_connection(c);
+}
+
+
+static void
+ngx_http_spdy_pool_cleanup(void *data)
+{
+    ngx_http_spdy_connection_t  *sc = data;
+
+    if (sc->pool) {
+        ngx_destroy_pool(sc->pool);
+    }
+}
+
+
+static void *
+ngx_http_spdy_zalloc(void *opaque, u_int items, u_int size)
+{
+    ngx_http_spdy_connection_t *sc = opaque;
+
+    return ngx_palloc(sc->connection->pool, items * size);
+}
+
+
+static void
+ngx_http_spdy_zfree(void *opaque, void *address)
+{
+#if 0
+    ngx_http_spdy_connection_t *sc = opaque;
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy zfree: %p", address);
+#endif
+}

Added: trunk/src/http/ngx_http_spdy.h
===================================================================
--- trunk/src/http/ngx_http_spdy.h	                        (rev 0)
+++ trunk/src/http/ngx_http_spdy.h	2013-03-20 10:36:57 UTC (rev 5122)
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#ifndef _NGX_HTTP_SPDY_H_INCLUDED_
+#define _NGX_HTTP_SPDY_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+#include <zlib.h>
+
+
+#define NGX_SPDY_VERSION              2
+
+#ifdef TLSEXT_TYPE_next_proto_neg
+#define NGX_SPDY_NPN_ADVERTISE        "\x06spdy/2"
+#define NGX_SPDY_NPN_NEGOTIATED       "spdy/2"
+#endif
+
+#define NGX_SPDY_STATE_BUFFER_SIZE    16
+
+#define NGX_SPDY_CTL_BIT              1
+
+#define NGX_SPDY_SYN_STREAM           1
+#define NGX_SPDY_SYN_REPLY            2
+#define NGX_SPDY_RST_STREAM           3
+#define NGX_SPDY_SETTINGS             4
+#define NGX_SPDY_NOOP                 5
+#define NGX_SPDY_PING                 6
+#define NGX_SPDY_GOAWAY               7
+#define NGX_SPDY_HEADERS              8
+
+#define NGX_SPDY_FRAME_HEADER_SIZE    8
+
+#define NGX_SPDY_SID_SIZE             4
+
+#define NGX_SPDY_SYN_STREAM_SIZE      10
+#define NGX_SPDY_SYN_REPLY_SIZE       6
+#define NGX_SPDY_RST_STREAM_SIZE      8
+#define NGX_SPDY_PING_SIZE            4
+#define NGX_SPDY_GOAWAY_SIZE          4
+#define NGX_SPDY_NV_NUM_SIZE          2
+#define NGX_SPDY_NV_NLEN_SIZE         2
+#define NGX_SPDY_NV_VLEN_SIZE         2
+#define NGX_SPDY_SETTINGS_NUM_SIZE    4
+#define NGX_SPDY_SETTINGS_IDF_SIZE    4
+#define NGX_SPDY_SETTINGS_VAL_SIZE    4
+
+#define NGX_SPDY_SETTINGS_PAIR_SIZE                                           \
+    (NGX_SPDY_SETTINGS_IDF_SIZE + NGX_SPDY_SETTINGS_VAL_SIZE)
+
+#define NGX_SPDY_HIGHEST_PRIORITY     0
+#define NGX_SPDY_LOWEST_PRIORITY      3
+
+#define NGX_SPDY_FLAG_FIN             0x01
+#define NGX_SPDY_FLAG_UNIDIRECTIONAL  0x02
+#define NGX_SPDY_FLAG_CLEAR_SETTINGS  0x01
+
+#define NGX_SPDY_MAX_FRAME_SIZE       ((1 << 24) - 1)
+
+#define NGX_SPDY_DATA_DISCARD         1
+#define NGX_SPDY_DATA_ERROR           2
+#define NGX_SPDY_DATA_INTERNAL_ERROR  3
+
+
+typedef struct ngx_http_spdy_connection_s   ngx_http_spdy_connection_t;
+typedef struct ngx_http_spdy_out_frame_s    ngx_http_spdy_out_frame_t;
+
+
+typedef u_char *(*ngx_http_spdy_handler_pt) (ngx_http_spdy_connection_t *sc,
+    u_char *pos, u_char *end);
+
+struct ngx_http_spdy_connection_s {
+    ngx_connection_t                *connection;
+    ngx_http_connection_t           *http_connection;
+
+    ngx_uint_t                       processing;
+
+    u_char                           buffer[NGX_SPDY_STATE_BUFFER_SIZE];
+    size_t                           buffer_used;
+    ngx_http_spdy_handler_pt         handler;
+
+    z_stream                         zstream_in;
+    z_stream                         zstream_out;
+
+    ngx_pool_t                      *pool;
+
+    ngx_http_spdy_out_frame_t       *free_ctl_frames;
+    ngx_connection_t                *free_fake_connections;
+
+    ngx_http_spdy_stream_t         **streams_index;
+
+    ngx_http_spdy_out_frame_t       *last_out;
+    ngx_http_spdy_stream_t          *last_stream;
+
+    ngx_http_spdy_stream_t          *stream;
+
+    ngx_uint_t                       headers;
+    size_t                           length;
+    u_char                           flags;
+
+    ngx_uint_t                       last_sid;
+
+    unsigned                         blocked:2;
+    unsigned                         waiting:1; /* FIXME better name */
+};
+
+
+struct ngx_http_spdy_stream_s {
+    ngx_uint_t                       id;
+    ngx_http_request_t              *request;
+    ngx_http_spdy_connection_t      *connection;
+    ngx_http_spdy_stream_t          *index;
+    ngx_http_spdy_stream_t          *next;
+
+    ngx_uint_t                       header_buffers;
+    ngx_uint_t                       waiting;
+    ngx_http_spdy_out_frame_t       *free_frames;
+    ngx_chain_t                     *free_data_headers;
+
+    unsigned                         priority:2;
+    unsigned                         handled:1;
+    unsigned                         in_closed:1;
+    unsigned                         out_closed:1;
+    unsigned                         skip_data:2;
+};
+
+
+struct ngx_http_spdy_out_frame_s {
+    ngx_http_spdy_out_frame_t       *next;
+    ngx_chain_t                     *first;
+    ngx_chain_t                     *last;
+    ngx_int_t                      (*handler)(ngx_http_spdy_connection_t *sc,
+                                        ngx_http_spdy_out_frame_t *frame);
+
+    ngx_http_spdy_out_frame_t       *free;
+
+    ngx_http_spdy_stream_t          *stream;
+    size_t                           size;
+
+    ngx_uint_t                       priority;
+    unsigned                         blocked:1;
+    unsigned                         fin:1;
+};
+
+
+static ngx_inline void
+ngx_http_spdy_queue_frame(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_http_spdy_out_frame_t  **out;
+
+    for (out = &sc->last_out; *out; out = &(*out)->next)
+    {
+        if (frame->priority >= (*out)->priority) {
+            break;
+        }
+    }
+
+    frame->next = *out;
+    *out = frame;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_queue_blocked_frame(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_http_spdy_out_frame_t  **out;
+
+    for (out = &sc->last_out; *out && !(*out)->blocked; out = &(*out)->next)
+    {
+        if (frame->priority >= (*out)->priority) {
+            break;
+        }
+    }
+
+    frame->next = *out;
+    *out = frame;
+}
+
+
+void ngx_http_spdy_init(ngx_event_t *rev);
+void ngx_http_spdy_request_headers_init();
+
+ngx_int_t ngx_http_spdy_read_request_body(ngx_http_request_t *r,
+    ngx_http_client_body_handler_pt post_handler);
+
+void ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc);
+
+ngx_int_t ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc);
+
+
+#define ngx_spdy_frame_aligned_write_uint16(p, s)                             \
+    (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
+
+#define ngx_spdy_frame_aligned_write_uint32(p, s)                             \
+    (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t))
+
+#if (NGX_HAVE_NONALIGNED)
+
+#define ngx_spdy_frame_write_uint16  ngx_spdy_frame_aligned_write_uint16
+#define ngx_spdy_frame_write_uint32  ngx_spdy_frame_aligned_write_uint32
+
+#else
+
+#define ngx_spdy_frame_write_uint16(p, s)                                     \
+    ((p)[0] = (u_char) (s) >> 8, (p)[1] = (u_char) (s), (p) + sizeof(uint16_t))
+
+#define ngx_spdy_frame_write_uint32(p, s)                                     \
+    ((p)[0] = (u_char) (s) >> 24,                                             \
+    (p)[1] = (u_char) (s) >> 16,                                              \
+    (p)[2] = (u_char) (s) >> 8,                                               \
+    (p)[3] = (u_char) (s), (p) + sizeof(uint32_t))
+
+#endif
+
+
+#define ngx_spdy_ctl_frame_head(t)                                            \
+    ((uint32_t) NGX_SPDY_CTL_BIT << 31 | NGX_SPDY_VERSION << 16 | (t))
+
+#define ngx_spdy_frame_write_head(p, t)                                       \
+    ngx_spdy_frame_aligned_write_uint32(p, ngx_spdy_ctl_frame_head(t))
+
+#define ngx_spdy_frame_write_flags_and_len(p, f, l)                           \
+    ngx_spdy_frame_aligned_write_uint32(p, (f) << 24 | (l))
+
+#define ngx_spdy_frame_write_sid  ngx_spdy_frame_aligned_write_uint32
+
+#endif /* _NGX_HTTP_SPDY_H_INCLUDED_ */

Added: trunk/src/http/ngx_http_spdy_filter_module.c
===================================================================
--- trunk/src/http/ngx_http_spdy_filter_module.c	                        (rev 0)
+++ trunk/src/http/ngx_http_spdy_filter_module.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -0,0 +1,999 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <nginx.h>
+#include <ngx_http_spdy_module.h>
+
+#include <zlib.h>
+
+
+#define NGX_SPDY_WRITE_BUFFERED  NGX_HTTP_WRITE_BUFFERED
+
+#define ngx_http_spdy_nv_nsize(h)  (NGX_SPDY_NV_NLEN_SIZE + sizeof(h) - 1)
+#define ngx_http_spdy_nv_vsize(h)  (NGX_SPDY_NV_VLEN_SIZE + sizeof(h) - 1)
+
+#define ngx_http_spdy_nv_write_num   ngx_spdy_frame_write_uint16
+#define ngx_http_spdy_nv_write_nlen  ngx_spdy_frame_write_uint16
+#define ngx_http_spdy_nv_write_vlen  ngx_spdy_frame_write_uint16
+
+#define ngx_http_spdy_nv_write_name(p, h)                                     \
+    ngx_cpymem(ngx_http_spdy_nv_write_nlen(p, sizeof(h) - 1), h, sizeof(h) - 1)
+
+#define ngx_http_spdy_nv_write_val(p, h)                                      \
+    ngx_cpymem(ngx_http_spdy_nv_write_vlen(p, sizeof(h) - 1), h, sizeof(h) - 1)
+
+static ngx_inline ngx_int_t ngx_http_spdy_filter_send(
+    ngx_connection_t *fc, ngx_http_spdy_stream_t *stream);
+
+static ngx_http_spdy_out_frame_t *ngx_http_spdy_filter_get_data_frame(
+    ngx_http_spdy_stream_t *stream, size_t len, ngx_uint_t flags,
+    ngx_chain_t *first, ngx_chain_t *last);
+
+static ngx_int_t ngx_http_spdy_syn_frame_handler(
+    ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_int_t ngx_http_spdy_data_frame_handler(
+    ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_inline void ngx_http_spdy_handle_frame(
+    ngx_http_spdy_stream_t *stream, ngx_http_spdy_out_frame_t *frame);
+static ngx_inline void ngx_http_spdy_handle_stream(
+    ngx_http_spdy_connection_t *sc, ngx_http_spdy_stream_t *stream);
+
+static void ngx_http_spdy_filter_cleanup(void *data);
+
+static ngx_int_t ngx_http_spdy_filter_init(ngx_conf_t *cf);
+
+
+static ngx_http_module_t  ngx_http_spdy_filter_module_ctx = {
+    NULL,                                  /* preconfiguration */
+    ngx_http_spdy_filter_init,             /* postconfiguration */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    NULL,                                  /* create location configuration */
+    NULL                                   /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_spdy_filter_module = {
+    NGX_MODULE_V1,
+    &ngx_http_spdy_filter_module_ctx,      /* module context */
+    NULL,                                  /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    NULL,                                  /* init master */
+    NULL,                                  /* init module */
+    NULL,                                  /* init process */
+    NULL,                                  /* init thread */
+    NULL,                                  /* exit thread */
+    NULL,                                  /* exit process */
+    NULL,                                  /* exit master */
+    NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_http_output_header_filter_pt  ngx_http_next_header_filter;
+static ngx_http_output_body_filter_pt    ngx_http_next_body_filter;
+
+
+static ngx_int_t
+ngx_http_spdy_header_filter(ngx_http_request_t *r)
+{
+    int                           rc;
+    size_t                        len;
+    u_char                       *p, *buf, *last;
+    ngx_buf_t                    *b;
+    ngx_str_t                     host;
+    ngx_uint_t                    i, j, count, port;
+    ngx_chain_t                  *cl;
+    ngx_list_part_t              *part, *pt;
+    ngx_table_elt_t              *header, *h;
+    ngx_connection_t             *c;
+    ngx_http_cleanup_t           *cln;
+    ngx_http_core_loc_conf_t     *clcf;
+    ngx_http_core_srv_conf_t     *cscf;
+    ngx_http_spdy_stream_t       *stream;
+    ngx_http_spdy_out_frame_t    *frame;
+    ngx_http_spdy_connection_t   *sc;
+    struct sockaddr_in           *sin;
+#if (NGX_HAVE_INET6)
+    struct sockaddr_in6          *sin6;
+#endif
+    u_char                        addr[NGX_SOCKADDR_STRLEN];
+
+    if (!r->spdy_stream) {
+        return ngx_http_next_header_filter(r);
+    }
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy header filter");
+
+    if (r->header_sent) {
+        return NGX_OK;
+    }
+
+    r->header_sent = 1;
+
+    if (r != r->main) {
+        return NGX_OK;
+    }
+
+    c = r->connection;
+
+    if (r->method == NGX_HTTP_HEAD) {
+        r->header_only = 1;
+    }
+
+    switch (r->headers_out.status) {
+
+    case NGX_HTTP_OK:
+    case NGX_HTTP_PARTIAL_CONTENT:
+        break;
+
+    case NGX_HTTP_NOT_MODIFIED:
+        r->header_only = 1;
+        break;
+
+    case NGX_HTTP_NO_CONTENT:
+        r->header_only = 1;
+
+        ngx_str_null(&r->headers_out.content_type);
+
+        r->headers_out.content_length = NULL;
+        r->headers_out.content_length_n = -1;
+
+        /* fall through */
+
+    default:
+        r->headers_out.last_modified_time = -1;
+        r->headers_out.last_modified = NULL;
+    }
+
+    len = NGX_SPDY_NV_NUM_SIZE
+          + ngx_http_spdy_nv_nsize("version")
+          + ngx_http_spdy_nv_vsize("HTTP/1.1")
+          + ngx_http_spdy_nv_nsize("status")
+          + ngx_http_spdy_nv_vsize("418");
+
+    clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+    if (r->headers_out.server == NULL) {
+        len += ngx_http_spdy_nv_nsize("server");
+        len += clcf->server_tokens ? ngx_http_spdy_nv_vsize(NGINX_VER)
+                                   : ngx_http_spdy_nv_vsize("nginx");
+    }
+
+    if (r->headers_out.date == NULL) {
+        len += ngx_http_spdy_nv_nsize("date")
+               + ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
+    }
+
+    if (r->headers_out.content_type.len) {
+        len += ngx_http_spdy_nv_nsize("content-type")
+               + NGX_SPDY_NV_VLEN_SIZE + r->headers_out.content_type.len;
+
+        if (r->headers_out.content_type_len == r->headers_out.content_type.len
+            && r->headers_out.charset.len)
+        {
+            len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
+        }
+    }
+
+    if (r->headers_out.content_length == NULL
+        && r->headers_out.content_length_n >= 0)
+    {
+        len += ngx_http_spdy_nv_nsize("content-length")
+               + NGX_SPDY_NV_VLEN_SIZE + NGX_OFF_T_LEN;
+    }
+
+    if (r->headers_out.last_modified == NULL
+        && r->headers_out.last_modified_time != -1)
+    {
+        len += ngx_http_spdy_nv_nsize("last-modified")
+               + ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
+    }
+
+    if (r->headers_out.location
+        && r->headers_out.location->value.len
+        && r->headers_out.location->value.data[0] == '/')
+    {
+        r->headers_out.location->hash = 0;
+
+        if (clcf->server_name_in_redirect) {
+            cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+            host = cscf->server_name;
+
+        } else if (r->headers_in.server.len) {
+            host = r->headers_in.server;
+
+        } else {
+            host.len = NGX_SOCKADDR_STRLEN;
+            host.data = addr;
+
+            if (ngx_connection_local_sockaddr(c, &host, 0) != NGX_OK) {
+                return NGX_ERROR;
+            }
+        }
+
+        switch (c->local_sockaddr->sa_family) {
+
+#if (NGX_HAVE_INET6)
+        case AF_INET6:
+            sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
+            port = ntohs(sin6->sin6_port);
+            break;
+#endif
+#if (NGX_HAVE_UNIX_DOMAIN)
+        case AF_UNIX:
+            port = 0;
+            break;
+#endif
+        default: /* AF_INET */
+            sin = (struct sockaddr_in *) c->local_sockaddr;
+            port = ntohs(sin->sin_port);
+            break;
+        }
+
+        len += ngx_http_spdy_nv_nsize("location")
+               + ngx_http_spdy_nv_vsize("https://")
+               + host.len
+               + r->headers_out.location->value.len;
+
+        if (clcf->port_in_redirect) {
+
+#if (NGX_HTTP_SSL)
+            if (c->ssl)
+                port = (port == 443) ? 0 : port;
+            else
+#endif
+                port = (port == 80) ? 0 : port;
+
+        } else {
+            port = 0;
+        }
+
+        if (port) {
+            len += sizeof(":65535") - 1;
+        }
+
+    } else {
+        ngx_str_null(&host);
+        port = 0;
+    }
+
+    part = &r->headers_out.headers.part;
+    header = part->elts;
+
+    for (i = 0; /* void */; i++) {
+
+        if (i >= part->nelts) {
+            if (part->next == NULL) {
+                break;
+            }
+
+            part = part->next;
+            header = part->elts;
+            i = 0;
+        }
+
+        if (header[i].hash == 0) {
+            continue;
+        }
+
+        len += NGX_SPDY_NV_NLEN_SIZE + header[i].key.len
+               + NGX_SPDY_NV_VLEN_SIZE  + header[i].value.len;
+    }
+
+    buf = ngx_alloc(len, r->pool->log);
+    if (buf == NULL) {
+        return NGX_ERROR;
+    }
+
+    last = buf + NGX_SPDY_NV_NUM_SIZE;
+
+    last = ngx_http_spdy_nv_write_name(last, "version");
+    last = ngx_http_spdy_nv_write_val(last, "HTTP/1.1");
+
+    last = ngx_http_spdy_nv_write_name(last, "status");
+    last = ngx_spdy_frame_write_uint16(last, 3);
+    last = ngx_sprintf(last, "%03ui", r->headers_out.status);
+
+    count = 2;
+
+    if (r->headers_out.server == NULL) {
+        last = ngx_http_spdy_nv_write_name(last, "server");
+        last = clcf->server_tokens
+               ? ngx_http_spdy_nv_write_val(last, NGINX_VER)
+               : ngx_http_spdy_nv_write_val(last, "nginx");
+
+        count++;
+    }
+
+    if (r->headers_out.date == NULL) {
+        last = ngx_http_spdy_nv_write_name(last, "date");
+
+        last = ngx_http_spdy_nv_write_vlen(last, ngx_cached_http_time.len);
+
+        last = ngx_cpymem(last, ngx_cached_http_time.data,
+                          ngx_cached_http_time.len);
+
+        count++;
+    }
+
+    if (r->headers_out.content_type.len) {
+
+        last = ngx_http_spdy_nv_write_name(last, "content-type");
+
+        p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+        last = ngx_cpymem(p, r->headers_out.content_type.data,
+                          r->headers_out.content_type.len);
+
+        if (r->headers_out.content_type_len == r->headers_out.content_type.len
+            && r->headers_out.charset.len)
+        {
+            last = ngx_cpymem(last, "; charset=", sizeof("; charset=") - 1);
+
+            last = ngx_cpymem(last, r->headers_out.charset.data,
+                              r->headers_out.charset.len);
+
+            /* update r->headers_out.content_type for possible logging */
+
+            r->headers_out.content_type.len = last - p;
+            r->headers_out.content_type.data = p;
+        }
+
+        (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+                                           r->headers_out.content_type.len);
+
+        count++;
+    }
+
+    if (r->headers_out.content_length == NULL
+        && r->headers_out.content_length_n >= 0)
+    {
+        last = ngx_http_spdy_nv_write_name(last, "content-length");
+
+        p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+        last = ngx_sprintf(p, "%O", r->headers_out.content_length_n);
+
+        (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+                                           last - p);
+
+        count++;
+    }
+
+    if (r->headers_out.last_modified == NULL
+        && r->headers_out.last_modified_time != -1)
+    {
+        last = ngx_http_spdy_nv_write_name(last, "last-modified");
+
+        p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+        last = ngx_http_time(p, r->headers_out.last_modified_time);
+
+        (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+                                           last - p);
+
+        count++;
+    }
+
+    if (host.data) {
+
+        last = ngx_http_spdy_nv_write_name(last, "location");
+
+        p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+        last = ngx_cpymem(p, "http", sizeof("http") - 1);
+
+#if (NGX_HTTP_SSL)
+        if (c->ssl) {
+            *last++ ='s';
+        }
+#endif
+
+        *last++ = ':'; *last++ = '/'; *last++ = '/';
+
+        last = ngx_cpymem(last, host.data, host.len);
+
+        if (port) {
+            last = ngx_sprintf(last, ":%ui", port);
+        }
+
+        last = ngx_cpymem(last, r->headers_out.location->value.data,
+                          r->headers_out.location->value.len);
+
+        /* update r->headers_out.location->value for possible logging */
+
+        r->headers_out.location->value.len = last - p;
+        r->headers_out.location->value.data = p;
+        ngx_str_set(&r->headers_out.location->key, "location");
+
+        (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+                                           r->headers_out.location->value.len);
+
+        count++;
+    }
+
+    part = &r->headers_out.headers.part;
+    header = part->elts;
+
+    for (i = 0; /* void */; i++) {
+
+        if (i >= part->nelts) {
+            if (part->next == NULL) {
+                break;
+            }
+
+            part = part->next;
+            header = part->elts;
+            i = 0;
+        }
+
+        if (header[i].hash == 0 || header[i].hash == 2) {
+            continue;
+        }
+
+        if ((header[i].key.len == 6
+             && ngx_strncasecmp(header[i].key.data,
+                                (u_char *) "status", 6) == 0)
+            || (header[i].key.len == 7
+                && ngx_strncasecmp(header[i].key.data,
+                                   (u_char *) "version", 7) == 0))
+        {
+            header[i].hash = 0;
+            continue;
+        }
+
+        last = ngx_http_spdy_nv_write_nlen(last, header[i].key.len);
+
+        ngx_strlow(last, header[i].key.data, header[i].key.len);
+        last += header[i].key.len;
+
+        p = last + NGX_SPDY_NV_VLEN_SIZE;
+
+        last = ngx_cpymem(p, header[i].value.data, header[i].value.len);
+
+        pt = part;
+        h = header;
+
+        for (j = i + 1; /* void */; j++) {
+
+            if (j >= pt->nelts) {
+                if (pt->next == NULL) {
+                    break;
+                }
+
+                pt = pt->next;
+                h = pt->elts;
+                j = 0;
+            }
+
+            if (h[j].hash == 0 || h[j].hash == 2
+                || h[j].key.len != header[i].key.len
+                || ngx_strncasecmp(header[i].key.data, h[j].key.data,
+                                   header[i].key.len))
+            {
+                continue;
+            }
+
+            *last++ = '\0';
+
+            last = ngx_cpymem(last, h[j].value.data, h[j].value.len);
+
+            h[j].hash = 2;
+        }
+
+        (void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
+                                           last - p);
+
+        count++;
+    }
+
+    (void) ngx_spdy_frame_write_uint16(buf, count);
+
+    stream = r->spdy_stream;
+    sc = stream->connection;
+
+    len = last - buf;
+
+    b = ngx_create_temp_buf(r->pool, NGX_SPDY_FRAME_HEADER_SIZE
+                                     + NGX_SPDY_SYN_REPLY_SIZE
+                                     + deflateBound(&sc->zstream_out, len));
+    if (b == NULL) {
+        ngx_free(buf);
+        return NGX_ERROR;
+    }
+
+    b->last += NGX_SPDY_FRAME_HEADER_SIZE + NGX_SPDY_SYN_REPLY_SIZE;
+
+    sc->zstream_out.next_in = buf;
+    sc->zstream_out.avail_in = len;
+    sc->zstream_out.next_out = b->last;
+    sc->zstream_out.avail_out = b->end - b->last;
+
+    rc = deflate(&sc->zstream_out, Z_SYNC_FLUSH);
+
+    ngx_free(buf);
+
+    if (rc != Z_OK) {
+        ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+                      "spdy deflate() failed: %d", rc);
+        return NGX_ERROR;
+    }
+
+    ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
+                   "spdy deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+                   sc->zstream_out.next_in, sc->zstream_out.next_out,
+                   sc->zstream_out.avail_in, sc->zstream_out.avail_out,
+                   rc);
+
+    b->last = sc->zstream_out.next_out;
+
+    p = b->pos;
+    p = ngx_spdy_frame_write_head(p, NGX_SPDY_SYN_REPLY);
+
+    len = b->last - b->pos;
+
+    r->header_size = len;
+
+    if (r->header_only) {
+        b->last_buf = 1;
+        p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_FIN,
+                                             len - NGX_SPDY_FRAME_HEADER_SIZE);
+    } else {
+        p = ngx_spdy_frame_write_flags_and_len(p, 0,
+                                             len - NGX_SPDY_FRAME_HEADER_SIZE);
+    }
+
+    (void) ngx_spdy_frame_write_sid(p, stream->id);
+
+    cl = ngx_alloc_chain_link(r->pool);
+    if (cl == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl->buf = b;
+    cl->next = NULL;
+
+    frame = ngx_palloc(r->pool, sizeof(ngx_http_spdy_out_frame_t));
+    if (frame == NULL) {
+        return NGX_ERROR;
+    }
+
+    frame->first = cl;
+    frame->last = cl;
+    frame->handler = ngx_http_spdy_syn_frame_handler;
+    frame->free = NULL;
+    frame->stream = stream;
+    frame->size = len;
+    frame->priority = stream->priority;
+    frame->blocked = 1;
+    frame->fin = r->header_only;
+
+    ngx_log_debug3(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
+                   "spdy:%ui create SYN_REPLY frame %p: size:%uz",
+                   stream->id, frame, frame->size);
+
+    ngx_http_spdy_queue_blocked_frame(sc, frame);
+
+    r->blocked++;
+
+    cln = ngx_http_cleanup_add(r, 0);
+    if (cln == NULL) {
+        return NGX_ERROR;
+    }
+
+    cln->handler = ngx_http_spdy_filter_cleanup;
+    cln->data = stream;
+
+    stream->waiting = 1;
+
+    return ngx_http_spdy_filter_send(c, stream);
+}
+
+
+static ngx_int_t
+ngx_http_spdy_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
+{
+    off_t                       size;
+    ngx_buf_t                  *b;
+    ngx_chain_t                *cl, *ll, *out, **ln;
+    ngx_http_spdy_stream_t     *stream;
+    ngx_http_spdy_out_frame_t  *frame;
+
+    stream = r->spdy_stream;
+
+    if (stream == NULL) {
+        return ngx_http_next_body_filter(r, in);
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "spdy body filter \"%V?%V\"", &r->uri, &r->args);
+
+    if (in == NULL || r->header_only) {
+
+        if (stream->waiting) {
+            return NGX_AGAIN;
+        }
+
+        r->connection->buffered &= ~NGX_SPDY_WRITE_BUFFERED;
+
+        return NGX_OK;
+    }
+
+    size = 0;
+    ln = &out;
+    ll = in;
+
+    for ( ;; ) {
+        b = ll->buf;
+#if 1
+        if (ngx_buf_size(b) == 0 && !ngx_buf_special(b)) {
+            ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+                          "zero size buf in spdy body filter "
+                          "t:%d r:%d f:%d %p %p-%p %p %O-%O",
+                          b->temporary,
+                          b->recycled,
+                          b->in_file,
+                          b->start,
+                          b->pos,
+                          b->last,
+                          b->file,
+                          b->file_pos,
+                          b->file_last);
+
+            ngx_debug_point();
+            return NGX_ERROR;
+        }
+#endif
+        cl = ngx_alloc_chain_link(r->pool);
+        if (cl == NULL) {
+            return NGX_ERROR;
+        }
+
+        size += ngx_buf_size(b);
+        cl->buf = b;
+
+        *ln = cl;
+        ln = &cl->next;
+
+        if (ll->next == NULL) {
+            break;
+        }
+
+        ll = ll->next;
+    }
+
+    if (size > NGX_SPDY_MAX_FRAME_SIZE) {
+        ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+                      "FIXME: chain too big in spdy filter: %O", size);
+        return NGX_ERROR;
+    }
+
+    frame = ngx_http_spdy_filter_get_data_frame(stream, (size_t) size,
+                                                b->last_buf, out, cl);
+    if (frame == NULL) {
+        return NGX_ERROR;
+    }
+
+    ngx_http_spdy_queue_frame(stream->connection, frame);
+
+    stream->waiting++;
+
+    r->main->blocked++;
+
+    return ngx_http_spdy_filter_send(r->connection, stream);
+}
+
+
+static ngx_http_spdy_out_frame_t *
+ngx_http_spdy_filter_get_data_frame(ngx_http_spdy_stream_t *stream,
+    size_t len, ngx_uint_t fin, ngx_chain_t *first, ngx_chain_t *last)
+{
+    u_char                     *p;
+    ngx_buf_t                  *buf;
+    ngx_uint_t                  flags;
+    ngx_chain_t                *cl;
+    ngx_http_spdy_out_frame_t  *frame;
+
+
+    frame = stream->free_frames;
+
+    if (frame) {
+        stream->free_frames = frame->free;
+
+    } else {
+        frame = ngx_palloc(stream->request->pool,
+                           sizeof(ngx_http_spdy_out_frame_t));
+        if (frame == NULL) {
+            return NULL;
+        }
+    }
+
+    ngx_log_debug4(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
+                   "spdy:%ui create DATA frame %p: len:%uz fin:%ui",
+                   stream->id, frame, len, fin);
+
+    if (len || fin) {
+
+        flags = fin ? NGX_SPDY_FLAG_FIN : 0;
+
+        cl = ngx_chain_get_free_buf(stream->request->pool,
+                                    &stream->free_data_headers);
+        if (cl == NULL) {
+            return NULL;
+        }
+
+        buf = cl->buf;
+
+        if (buf->start) {
+            p = buf->start;
+            buf->pos = p;
+
+            p += sizeof(uint32_t);
+
+            (void) ngx_spdy_frame_write_flags_and_len(p, flags, len);
+
+        } else {
+            p = ngx_palloc(stream->request->pool, NGX_SPDY_FRAME_HEADER_SIZE);
+            if (p == NULL) {
+                return NULL;
+            }
+
+            buf->pos = p;
+            buf->start = p;
+
+            p = ngx_spdy_frame_write_sid(p, stream->id);
+            p = ngx_spdy_frame_write_flags_and_len(p, flags, len);
+
+            buf->last = p;
+            buf->end = p;
+
+            buf->tag = (ngx_buf_tag_t) &ngx_http_spdy_filter_module;
+            buf->memory = 1;
+        }
+
+        cl->next = first;
+        first = cl;
+    }
+
+    frame->first = first;
+    frame->last = last;
+    frame->handler = ngx_http_spdy_data_frame_handler;
+    frame->free = NULL;
+    frame->stream = stream;
+    frame->size = NGX_SPDY_FRAME_HEADER_SIZE + len;
+    frame->priority = stream->priority;
+    frame->blocked = 0;
+    frame->fin = fin;
+
+    return frame;
+}
+
+
+static ngx_inline ngx_int_t
+ngx_http_spdy_filter_send(ngx_connection_t *fc, ngx_http_spdy_stream_t *stream)
+{
+    if (ngx_http_spdy_send_output_queue(stream->connection) == NGX_ERROR) {
+        fc->error = 1;
+        return NGX_ERROR;
+    }
+
+    if (stream->waiting) {
+        fc->buffered |= NGX_SPDY_WRITE_BUFFERED;
+        fc->write->delayed = 1;
+        return NGX_AGAIN;
+    }
+
+    fc->buffered &= ~NGX_SPDY_WRITE_BUFFERED;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_syn_frame_handler(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_buf_t               *buf;
+    ngx_http_spdy_stream_t  *stream;
+
+    buf = frame->first->buf;
+
+    if (buf->pos != buf->last) {
+        return NGX_AGAIN;
+    }
+
+    stream = frame->stream;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy:%ui SYN_REPLY frame %p was sent", stream->id, frame);
+
+    ngx_free_chain(stream->request->pool, frame->first);
+
+    ngx_http_spdy_handle_frame(stream, frame);
+
+    ngx_http_spdy_handle_stream(sc, stream);
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_data_frame_handler(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_chain_t             *cl, *ln;
+    ngx_http_spdy_stream_t  *stream;
+
+    stream = frame->stream;
+
+    cl = frame->first;
+
+    if (cl->buf->tag == (ngx_buf_tag_t) &ngx_http_spdy_filter_module) {
+
+        if (cl->buf->pos != cl->buf->last) {
+            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                           "spdy:%ui DATA frame %p was sent partially",
+                           stream->id, frame);
+
+            return NGX_AGAIN;
+        }
+
+        ln = cl->next;
+
+        cl->next = stream->free_data_headers;
+        stream->free_data_headers = cl;
+
+        if (cl == frame->last) {
+            goto done;
+        }
+
+        cl = ln;
+    }
+
+    for ( ;; ) {
+        if (ngx_buf_size(cl->buf) != 0) {
+
+            if (cl != frame->first) {
+                frame->first = cl;
+                ngx_http_spdy_handle_stream(sc, stream);
+            }
+
+            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                           "spdy:%ui DATA frame %p was sent partially",
+                           stream->id, frame);
+
+            return NGX_AGAIN;
+        }
+
+        ln = cl->next;
+
+        ngx_free_chain(stream->request->pool, cl);
+
+        if (cl == frame->last) {
+            goto done;
+        }
+
+        cl = ln;
+    }
+
+done:
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+                   "spdy:%ui DATA frame %p was sent", stream->id, frame);
+
+    stream->request->header_size += NGX_SPDY_FRAME_HEADER_SIZE;
+
+    ngx_http_spdy_handle_frame(stream, frame);
+
+    ngx_http_spdy_handle_stream(sc, stream);
+
+    return NGX_OK;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_handle_frame(ngx_http_spdy_stream_t *stream,
+    ngx_http_spdy_out_frame_t *frame)
+{
+    ngx_http_request_t  *r;
+
+    r = stream->request;
+
+    r->connection->sent += frame->size;
+    r->blocked--;
+
+    if (frame->fin) {
+        stream->out_closed = 1;
+    }
+
+    frame->free = stream->free_frames;
+    stream->free_frames = frame;
+
+    stream->waiting--;
+}
+
+
+static ngx_inline void
+ngx_http_spdy_handle_stream(ngx_http_spdy_connection_t *sc,
+    ngx_http_spdy_stream_t *stream)
+{
+    ngx_connection_t  *fc;
+
+    fc = stream->request->connection;
+
+    fc->write->delayed = 0;
+
+    if (stream->handled) {
+        return;
+    }
+
+    if (sc->blocked == 2) {
+        stream->handled = 1;
+
+        stream->next = sc->last_stream;
+        sc->last_stream = stream;
+    }
+}
+
+
+static void
+ngx_http_spdy_filter_cleanup(void *data)
+{
+    ngx_http_spdy_stream_t *stream = data;
+
+    ngx_http_request_t         *r;
+    ngx_http_spdy_out_frame_t  *frame, **fn;
+
+    if (stream->waiting == 0) {
+        return;
+    }
+
+    r = stream->request;
+
+    fn = &stream->connection->last_out;
+
+    for ( ;; ) {
+        frame = *fn;
+
+        if (frame == NULL) {
+            break;
+        }
+
+        if (frame->stream == stream && !frame->blocked) {
+
+            stream->waiting--;
+            r->blocked--;
+
+            *fn = frame->next;
+            continue;
+        }
+
+        fn = &frame->next;
+    }
+}
+
+
+static ngx_int_t
+ngx_http_spdy_filter_init(ngx_conf_t *cf)
+{
+    ngx_http_next_header_filter = ngx_http_top_header_filter;
+    ngx_http_top_header_filter = ngx_http_spdy_header_filter;
+
+    ngx_http_next_body_filter = ngx_http_top_body_filter;
+    ngx_http_top_body_filter = ngx_http_spdy_body_filter;
+
+    return NGX_OK;
+}

Added: trunk/src/http/ngx_http_spdy_module.c
===================================================================
--- trunk/src/http/ngx_http_spdy_module.c	                        (rev 0)
+++ trunk/src/http/ngx_http_spdy_module.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -0,0 +1,351 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_spdy_module.h>
+
+
+static ngx_int_t ngx_http_spdy_add_variables(ngx_conf_t *cf);
+
+static ngx_int_t ngx_http_spdy_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data);
+static ngx_int_t ngx_http_spdy_request_priority_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data);
+
+static ngx_int_t ngx_http_spdy_module_init(ngx_cycle_t *cycle);
+
+static void *ngx_http_spdy_create_main_conf(ngx_conf_t *cf);
+static char *ngx_http_spdy_init_main_conf(ngx_conf_t *cf, void *conf);
+
+static void *ngx_http_spdy_create_srv_conf(ngx_conf_t *cf);
+static char *ngx_http_spdy_merge_srv_conf(ngx_conf_t *cf, void *parent,
+    void *child);
+
+static char *ngx_http_spdy_recv_buffer_size(ngx_conf_t *cf, void *post,
+    void *data);
+static char *ngx_http_spdy_pool_size(ngx_conf_t *cf, void *post, void *data);
+static char *ngx_http_spdy_streams_index_mask(ngx_conf_t *cf, void *post,
+    void *data);
+
+
+static ngx_conf_num_bounds_t  ngx_http_spdy_headers_comp_bounds = {
+    ngx_conf_check_num_bounds, 0, 9
+};
+
+static ngx_conf_post_t  ngx_http_spdy_recv_buffer_size_post =
+    { ngx_http_spdy_recv_buffer_size };
+static ngx_conf_post_t  ngx_http_spdy_pool_size_post =
+    { ngx_http_spdy_pool_size };
+static ngx_conf_post_t  ngx_http_spdy_streams_index_mask_post =
+    { ngx_http_spdy_streams_index_mask };
+
+
+static ngx_command_t  ngx_http_spdy_commands[] = {
+
+    { ngx_string("spdy_recv_buffer_size"),
+      NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_MAIN_CONF_OFFSET,
+      offsetof(ngx_http_spdy_main_conf_t, recv_buffer_size),
+      &ngx_http_spdy_recv_buffer_size_post },
+
+    { ngx_string("spdy_pool_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, pool_size),
+      &ngx_http_spdy_pool_size_post },
+
+    { ngx_string("spdy_max_concurrent_streams"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, concurrent_streams),
+      NULL },
+
+    { ngx_string("spdy_streams_index_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, streams_index_mask),
+      &ngx_http_spdy_streams_index_mask_post },
+
+    { ngx_string("spdy_recv_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, recv_timeout),
+      NULL },
+
+    { ngx_string("spdy_keepalive_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, keepalive_timeout),
+      NULL },
+
+    { ngx_string("spdy_headers_comp"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_SRV_CONF_OFFSET,
+      offsetof(ngx_http_spdy_srv_conf_t, headers_comp),
+      &ngx_http_spdy_headers_comp_bounds },
+
+      ngx_null_command
+};
+
+
+static ngx_http_module_t  ngx_http_spdy_module_ctx = {
+    ngx_http_spdy_add_variables,           /* preconfiguration */
+    NULL,                                  /* postconfiguration */
+
+    ngx_http_spdy_create_main_conf,        /* create main configuration */
+    ngx_http_spdy_init_main_conf,          /* init main configuration */
+
+    ngx_http_spdy_create_srv_conf,         /* create server configuration */
+    ngx_http_spdy_merge_srv_conf,          /* merge server configuration */
+
+    NULL,                                  /* create location configuration */
+    NULL                                   /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_spdy_module = {
+    NGX_MODULE_V1,
+    &ngx_http_spdy_module_ctx,             /* module context */
+    ngx_http_spdy_commands,                /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    NULL,                                  /* init master */
+    ngx_http_spdy_module_init,             /* init module */
+    NULL,                                  /* init process */
+    NULL,                                  /* init thread */
+    NULL,                                  /* exit thread */
+    NULL,                                  /* exit process */
+    NULL,                                  /* exit master */
+    NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_http_variable_t  ngx_http_spdy_vars[] = {
+
+    { ngx_string("spdy"), NULL,
+      ngx_http_spdy_variable, 0, 0, 0 },
+
+    { ngx_string("spdy_request_priority"), NULL,
+      ngx_http_spdy_request_priority_variable, 0, 0, 0 },
+
+    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+};
+
+
+static ngx_int_t
+ngx_http_spdy_add_variables(ngx_conf_t *cf)
+{
+   ngx_http_variable_t  *var, *v;
+
+    for (v = ngx_http_spdy_vars; v->name.len; v++) {
+        var = ngx_http_add_variable(cf, &v->name, v->flags);
+        if (var == NULL) {
+            return NGX_ERROR;
+        }
+
+        var->get_handler = v->get_handler;
+        var->data = v->data;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data)
+{
+    if (r->spdy_stream) {
+        v->len = 1;
+        v->valid = 1;
+        v->no_cacheable = 0;
+        v->not_found = 0;
+        v->data = (u_char *) "2";
+
+        return NGX_OK;
+    }
+
+    *v = ngx_http_variable_null_value;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_request_priority_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data)
+{
+    if (r->spdy_stream) {
+        v->len = 1;
+        v->valid = 1;
+        v->no_cacheable = 0;
+        v->not_found = 0;
+
+        v->data = ngx_pnalloc(r->pool, 1);
+        if (v->data == NULL) {
+            return NGX_ERROR;
+        }
+
+        v->data[0] = '0' + (u_char) r->spdy_stream->priority;
+
+        return NGX_OK;
+    }
+
+    *v = ngx_http_variable_null_value;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_module_init(ngx_cycle_t *cycle)
+{
+    ngx_http_spdy_request_headers_init();
+
+    return NGX_OK;
+}
+
+
+static void *
+ngx_http_spdy_create_main_conf(ngx_conf_t *cf)
+{
+    ngx_http_spdy_main_conf_t  *smcf;
+
+    smcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_spdy_main_conf_t));
+    if (smcf == NULL) {
+        return NULL;
+    }
+
+    smcf->recv_buffer_size = NGX_CONF_UNSET_SIZE;
+
+    return smcf;
+}
+
+
+static char *
+ngx_http_spdy_init_main_conf(ngx_conf_t *cf, void *conf)
+{
+    ngx_http_spdy_main_conf_t *smcf = conf;
+
+    if (smcf->recv_buffer_size == NGX_CONF_UNSET_SIZE) {
+        smcf->recv_buffer_size = 256 * 1024;
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+static void *
+ngx_http_spdy_create_srv_conf(ngx_conf_t *cf)
+{
+    ngx_http_spdy_srv_conf_t  *sscf;
+
+    sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_spdy_srv_conf_t));
+    if (sscf == NULL) {
+        return NULL;
+    }
+
+    sscf->pool_size = NGX_CONF_UNSET_SIZE;
+
+    sscf->concurrent_streams = NGX_CONF_UNSET_UINT;
+    sscf->streams_index_mask = NGX_CONF_UNSET_UINT;
+
+    sscf->recv_timeout = NGX_CONF_UNSET_MSEC;
+    sscf->keepalive_timeout = NGX_CONF_UNSET_MSEC;
+
+    sscf->headers_comp = NGX_CONF_UNSET;
+
+    return sscf;
+}
+
+
+static char *
+ngx_http_spdy_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
+{
+    ngx_http_spdy_srv_conf_t *prev = parent;
+    ngx_http_spdy_srv_conf_t *conf = child;
+
+    ngx_conf_merge_size_value(conf->pool_size, prev->pool_size, 4096);
+
+    ngx_conf_merge_uint_value(conf->concurrent_streams,
+                              prev->concurrent_streams, 100);
+
+    ngx_conf_merge_uint_value(conf->streams_index_mask,
+                              prev->streams_index_mask, 32 - 1);
+
+    ngx_conf_merge_msec_value(conf->recv_timeout,
+                              prev->recv_timeout, 30000);
+    ngx_conf_merge_msec_value(conf->keepalive_timeout,
+                              prev->keepalive_timeout, 180000);
+
+    ngx_conf_merge_value(conf->headers_comp, prev->headers_comp, 0);
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_recv_buffer_size(ngx_conf_t *cf, void *post, void *data)
+{
+    size_t *sp = data;
+
+    if (*sp <= 2 * NGX_SPDY_STATE_BUFFER_SIZE) {
+        return "value is too small";
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_pool_size(ngx_conf_t *cf, void *post, void *data)
+{
+    size_t *sp = data;
+
+    if (*sp < NGX_MIN_POOL_SIZE) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "the pool size must be no less than %uz",
+                           NGX_MIN_POOL_SIZE);
+        return NGX_CONF_ERROR;
+    }
+
+    if (*sp % NGX_POOL_ALIGNMENT) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "the pool size must be a multiple of %uz",
+                           NGX_POOL_ALIGNMENT);
+        return NGX_CONF_ERROR;
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_spdy_streams_index_mask(ngx_conf_t *cf, void *post, void *data)
+{
+    ngx_uint_t *np = data;
+
+    ngx_uint_t  mask;
+
+    mask = *np - 1;
+
+    if (*np == 0 || (*np & mask)) {
+        return "must be a power of two";
+    }
+
+    *np = mask;
+
+    return NGX_CONF_OK;
+}

Added: trunk/src/http/ngx_http_spdy_module.h
===================================================================
--- trunk/src/http/ngx_http_spdy_module.h	                        (rev 0)
+++ trunk/src/http/ngx_http_spdy_module.h	2013-03-20 10:36:57 UTC (rev 5122)
@@ -0,0 +1,36 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#ifndef _NGX_HTTP_SPDY_MODULE_H_INCLUDED_
+#define _NGX_HTTP_SPDY_MODULE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+typedef struct {
+    size_t                          recv_buffer_size;
+    u_char                         *recv_buffer;
+} ngx_http_spdy_main_conf_t;
+
+
+typedef struct {
+    size_t                          pool_size;
+    ngx_uint_t                      concurrent_streams;
+    ngx_uint_t                      streams_index_mask;
+    ngx_msec_t                      recv_timeout;
+    ngx_msec_t                      keepalive_timeout;
+    ngx_int_t                       headers_comp;
+} ngx_http_spdy_srv_conf_t;
+
+
+extern ngx_module_t  ngx_http_spdy_module;
+
+
+#endif /* _NGX_HTTP_SPDY_MODULE_H_INCLUDED_ */

Modified: trunk/src/http/ngx_http_upstream.c
===================================================================
--- trunk/src/http/ngx_http_upstream.c	2013-03-20 10:18:26 UTC (rev 5121)
+++ trunk/src/http/ngx_http_upstream.c	2013-03-20 10:36:57 UTC (rev 5122)
@@ -440,6 +440,13 @@
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http init upstream, client timer: %d", c->read->timer_set);
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        ngx_http_upstream_init_request(r);
+        return;
+    }
+#endif
+
     if (c->read->timer_set) {
         ngx_del_timer(c->read);
     }
@@ -1018,6 +1025,12 @@
         return;
     }
 
+#if (NGX_HTTP_SPDY)
+    if (r->spdy_stream) {
+        return;
+    }
+#endif
+
 #if (NGX_HAVE_KQUEUE)
 
     if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {



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