[nginx] HTTP/2: run posted requests after reading body.

[Maxim Dounin]

details:   https://hg.nginx.org/nginx/rev/526dddf637bb
branches:  
changeset: 7711:526dddf637bb
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Sep 23 19:52:31 2020 +0300
description:
HTTP/2: run posted requests after reading body.

HTTP/2 code failed to run posted requests after calling the request body
handler, and this resulted in connection hang if a subrequest was created
in the body handler and no other actions were made.

diffstat:

 src/http/v2/ngx_http_v2.c |  4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diffs (28 lines):

diff -r 097f578a4a8f -r 526dddf637bb src/http/v2/ngx_http_v2.c
--- a/src/http/v2/ngx_http_v2.c	Wed Sep 23 19:50:49 2020 +0300
+++ b/src/http/v2/ngx_http_v2.c	Wed Sep 23 19:52:31 2020 +0300
@@ -1058,6 +1058,7 @@ ngx_http_v2_state_read_data(ngx_http_v2_
     size_t                   size;
     ngx_buf_t               *buf;
     ngx_int_t                rc;
+    ngx_connection_t        *fc;
     ngx_http_request_t      *r;
     ngx_http_v2_stream_t    *stream;
     ngx_http_v2_srv_conf_t  *h2scf;
@@ -1076,6 +1077,7 @@ ngx_http_v2_state_read_data(ngx_http_v2_
     }
 
     r = stream->request;
+    fc = r->connection;
 
     if (r->reading_body && !r->request_body_no_buffering) {
         ngx_log_debug0(NGX_LOG_DEBUG_HTTP, h2c->connection->log, 0,
@@ -1108,6 +1110,8 @@ ngx_http_v2_state_read_data(ngx_http_v2_
             ngx_http_finalize_request(r, rc);
         }
 
+        ngx_http_run_posted_requests(fc);
+
     } else if (size) {
         buf = stream->preread;