utils: do not emit eof chunk for 204/304 responses

According to RFC2616 10.2.5 and 10.3.5, 204 and 304 responses MUST NOT contain any
message body, therfore do not emit an EOF chunk for such responses.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/utils.c b/utils.c
index 1c21fc5..1092a7d 100644
--- a/utils.c
+++ b/utils.c
@@ -28,6 +28,10 @@ bool uh_use_chunked(struct client *cl)
 	if (cl->request.method == UH_HTTP_MSG_HEAD || cl->request.method == UH_HTTP_MSG_OPTIONS)
 		return false;
 
+	/* RFC2616 10.2.5, 10.3.5 */
+	if (cl->http_code == 204 || cl->http_code == 304)
+		return false;
+
 	return true;
 }