From: Andreas Gustafsson <gson@gson.org>
Date: Tue, 26 Sep 2017 16:23:29 +0000 (+0300)
Subject: Do not crash when evhttp_send_reply_start() is called after a timeout.
X-Git-Tag: release-2.1.9-beta^2~153
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=826f1134b879cafdb73fed6c4ac1174e3022e410;p=libevent

Do not crash when evhttp_send_reply_start() is called after a timeout.

This fixes the crash reported in issue #509.  The "would be nice"
items discussed in #509 can be addressed separately.

(cherry picked from commit 99d0a952dada771b91acf63f5208b994e80a2986)
---

diff --git a/http.c b/http.c
index 8aa2b120..d6dfeea1 100644
--- a/http.c
+++ b/http.c
@@ -2822,6 +2822,10 @@ evhttp_send_reply_start(struct evhttp_request *req, int code,
     const char *reason)
 {
 	evhttp_response_code_(req, code, reason);
+
+	if (req->evcon == NULL)
+		return;
+
 	if (evhttp_find_header(req->output_headers, "Content-Length") == NULL &&
 	    REQ_VERSION_ATLEAST(req, 1, 1) &&
 	    evhttp_response_needs_body(req)) {