commit 306ed20daff4704168c7048c4c64c4ea9d46c153
author Valentin Bartenev <vbart@nginx.com> Thu Jun 16 20:55:11 2016 +0300
committer Valentin Bartenev <vbart@nginx.com> Thu Jun 16 20:55:11 2016 +0300
tree e9c6e1e1dc347fd612b3c0fbc9275d4440c9f7b2
parent 470fb58bda0c54c85307527ed61e19029d03830c

HTTP/2: avoid adding Content-Length for requests without body.

There is no reason to add the "Content-Length: 0" header to a proxied request
without body if the header isn't presented in the original request.

Thanks to Amazon.

src/http/v2/ngx_http_v2.c

diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index 99cb3fc..342c307 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -3424,7 +3424,9 @@
         return;
     }
 
-    r->headers_in.chunked = (r->headers_in.content_length_n == -1);
+    if (r->headers_in.content_length_n == -1 && !r->stream->in_closed) {
+        r->headers_in.chunked = 1;
+    }
 
     ngx_http_process_request(r);
 }
@@ -3638,7 +3640,7 @@
             rb->buf = NULL;
         }
 
-        if (r->headers_in.content_length_n == -1) {
+        if (r->headers_in.chunked) {
             r->headers_in.content_length_n = rb->received;
         }