From: Daniel Stenberg <daniel@haxx.se>
Date: Sun, 27 Sep 2015 18:48:35 +0000 (+0200)
Subject: readwrite_data: set a max number of loops
X-Git-Tag: curl-7_45_0~13
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=790d6de485154440d4f8822a54641ee00a0d09f3;p=curl

readwrite_data: set a max number of loops

... as otherwise a really fast pipe can "lock" one transfer for some
protocols, like with HTTP/2.
---

diff --git a/lib/transfer.c b/lib/transfer.c
index 191523c8b..7bc500cc8 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -399,6 +399,7 @@ static CURLcode readwrite_data(struct SessionHandle *data,
   size_t excess = 0; /* excess bytes read */
   bool is_empty_data = FALSE;
   bool readmore = FALSE; /* used by RTP to signal for more data */
+  int maxloops = 100;
 
   *done = FALSE;
 
@@ -794,7 +795,7 @@ static CURLcode readwrite_data(struct SessionHandle *data,
       k->keepon &= ~KEEP_RECV;
     }
 
-  } while(data_pending(conn));
+  } while(data_pending(conn) && maxloops--);
 
   if(((k->keepon & (KEEP_RECV|KEEP_SEND)) == KEEP_SEND) &&
      conn->bits.close ) {