Random timeout while using ngx_http_read_client_request_body

[vivek goel]

Hi* *Maxim
Can you please tell the file name I should be looking for correct example
of using  ngx_http_read_client_request_body  for content handler module ?


regards
Vivek Goel



On Mon, Mar 19, 2012 at 6:03 PM, vivek goel <goelvivek2011 at gmail.com> wrote:

> I am writing my own module to generate contents.
> I am getting random time-outs with it.
> What can be the issue ?
>
> Following is the source code for my module
>
>
> /*
>  * Copyright (C) Igor Sysoev
>  * Copyright (C) Nginx, Inc.
>  */
>
> #include <ngx_config.h>
> #include <ngx_core.h>
> #include <ngx_http.h>
>
> typedef struct {
>     ngx_flag_t done : 1;
>     ngx_flag_t waiting_more_body : 1;
> } ngx_http_helloworld_ctx_t;
>
>
> static char *ngx_http_helloworld(ngx_conf_t *cf, ngx_command_t *cmd,
>         void *conf);
> static void ngx_http_form_input_post_read(ngx_http_request_t *r);
>
> static ngx_command_t ngx_http_helloworld_commands[] = {
>
>     { ngx_string("helloworld"),
>         NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF |
> NGX_CONF_NOARGS,
>         ngx_http_helloworld,
>         0,
>         0,
>         NULL},
>
>     ngx_null_command
> };
>
>
>
>
> //static u_char ngx_helloworld[] = "ABCD";
>
>
> static ngx_http_module_t ngx_http_helloworld_module_ctx = {
>     NULL, /* preconfiguration */
>     NULL, /* 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_helloworld_module = {
>     NGX_MODULE_V1,
>     &ngx_http_helloworld_module_ctx, /* module context */
>     ngx_http_helloworld_commands, /* 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_str_t ngx_http_gif_type = ngx_string("text/html");
>
> static ngx_int_t
> ngx_http_helloworld_handler(ngx_http_request_t *r) {
>     ngx_http_complex_value_t cv;
>     ngx_http_helloworld_ctx_t *ctx;
>
>
>
>     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
>             "http form_input rewrite phase handler");
>
>     ctx = ngx_http_get_module_ctx(r, ngx_http_helloworld_module);
>
>     if (ctx != NULL) {
>         if (ctx->done) {
>             ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
>                     "http form_input rewrite phase handler done");
>
>             return NGX_DECLINED;
>         }
>
>         return NGX_DONE;
>     }
>
>     ctx = ngx_pcalloc(r->pool, sizeof (ngx_http_helloworld_ctx_t));
>     if (ctx == NULL) {
>         return NGX_ERROR;
>     }
>
>     /* set by ngx_pcalloc:
>      *      ctx->done = 0;
>      *      ctx->waiting_more_body = 0;
>      */
>
>     ngx_http_set_ctx(r, ctx, ngx_http_helloworld_module);
>
>
>
>
>
>     if (!(r->method & (NGX_HTTP_GET | NGX_HTTP_POST))) {
>         return NGX_HTTP_NOT_ALLOWED;
>     }
>
>     ngx_memzero(&cv, sizeof (ngx_http_complex_value_t));
>     if (r->method == NGX_HTTP_POST) {
>         ngx_int_t rc = ngx_http_read_client_request_body(r,
> ngx_http_form_input_post_read);
>         if (rc) {
>         }
>     }
>
>     /*
>           ngx_str_t b;
>           ngx_str_set(&b,"/b");
>           return ngx_http_internal_redirect(r, &b,NULL);
>      */
>     return ngx_http_send_response(r, NGX_HTTP_OK, &ngx_http_gif_type, &cv);
> }
>
> static char *
> ngx_http_helloworld(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) {
>     ngx_http_core_loc_conf_t *clcf;
>
>     clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
>     clcf->handler = ngx_http_helloworld_handler;
>
>     return NGX_CONF_OK;
> }
>
> static void ngx_http_form_input_post_read(ngx_http_request_t *r) {
>     ngx_http_helloworld_ctx_t *ctx;
>
>     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
>             "http form_input post read request body");
>
>     r->read_event_handler = ngx_http_request_empty_handler;
>
>     ctx = ngx_http_get_module_ctx(r, ngx_http_helloworld_module);
>     if (ctx == NULL) {
>         return;
>     }
>     ctx->done = 1;
>
> #if defined(nginx_version) && nginx_version >= 8011
>
>     r->main->count--;
> #endif
>
>
>
>
>     if (ctx->waiting_more_body) {
>         ctx->waiting_more_body = 0;
>
>         ngx_http_core_run_phases(r);
>     }
> }
>
>
> regards
> Vivek Goel
>
>
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