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multi: force connections to get closed in close_all_connections

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Several independent reports on infinite loops hanging in the
close_all_connections() function when closing a multi handle, can be
fixed by first marking the connection to get closed before calling
Curl_disconnect.

This is more fixing-the-symptom rather than the underlying problem
though.

Bug: https://curl.haxx.se/mail/lib-2016-10/0011.html
Bug: https://curl.haxx.se/mail/lib-2016-10/0059.html

Reported-by: Dan Fandrich, Valentin David, Miloš Ljumović
This commit is contained in:
Daniel Stenberg 2016-10-21 11:03:10 +02:00
parent 406506ca92
commit 6290c3c26b
1 changed files with 2 additions and 0 deletions
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2
lib/multi.c
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@ -42,6 +42,7 @@
#include "multihandle.h"
#include "pipeline.h"
#include "sigpipe.h"
#include "connect.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
@ -2177,6 +2178,7 @@ static void close_all_connections(struct Curl_multi *multi)
conn->data->easy_conn = NULL; /* clear the easy handle's connection
pointer */
/* This will remove the connection from the cache */
connclose(conn, "kill all");
(void)Curl_disconnect(conn, FALSE);
sigpipe_restore(&pipe_st);