Rob Hughes : ws2_32: Handle EISCONN from sendmsg.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b9591e21cfbe62a0c523524f0214f05d783239a7
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b9591e21cfbe62a0c523524f0...

Author: Rob Hughes 
Date:   Tue Mar 12 16:14:19 2019 +0000

ws2_32: Handle EISCONN from sendmsg.

When calling sendmsg on a socket that's already connected, some
implementations will return EISCONN if you specify a recipient
(notably, Darwin/OSX with UDP connections). Newer versions of Linux
and Windows will simply ignore the destination parameter.

Signed-off-by: Rob Hughes 
Signed-off-by: Alexandre Julliard

---

dlls/ws2_32/socket.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
index 3755338..a56e284 100644
--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -2628,6 +2628,12 @@ static int WS2_send( int fd, struct ws2_async *wsa, int flags )

while ((ret = sendmsg(fd, &hdr, flags)) == -1)
     {
+        if (errno == EISCONN)
+        {
+            hdr.msg_name = 0;
+            hdr.msg_namelen = 0;
+            continue;
+        }
         if (errno != EINTR)
             return -1;
     }