From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sun, 3 Aug 2014 04:57:57 +0000 (+0900)
Subject: HTTP/2: Fix infinite loop in readwrite_data()
X-Git-Tag: curl-7_38_0~146
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67920e15167790e6d5f347ef7672bb4a2e5f712f;p=thirdparty%2Fcurl.git

HTTP/2: Fix infinite loop in readwrite_data()

To prevent infinite loop in readwrite_data() function when stream is
reset before any response body comes, reset closed flag to false once
it is evaluated to true.
---

diff --git a/lib/http2.c b/lib/http2.c
index 77dd014d33..c53012d6ed 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -668,6 +668,9 @@ static ssize_t http2_recv(struct connectdata *conn, int sockindex,
   (void)sockindex; /* we always do HTTP2 on sockindex 0 */
 
   if(httpc->closed) {
+    /* Reset to FALSE to prevent infinite loop in readwrite_data
+       function. */
+    httpc->closed = FALSE;
     return 0;
   }
 
@@ -747,6 +750,9 @@ static ssize_t http2_recv(struct connectdata *conn, int sockindex,
   /* If stream is closed, return 0 to signal the http routine to close
      the connection */
   if(httpc->closed) {
+    /* Reset to FALSE to prevent infinite loop in readwrite_data
+       function. */
+    httpc->closed = FALSE;
     return 0;
   }
   *err = CURLE_AGAIN;