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 <rbhughes@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ws2_32: Handle EISCONN from sendmsg.
b9591e21 · Rob Hughes · Alexandre Julliard · e88084f6 · b9591e21
Commit b9591e21 authored Mar 12, 2019 by Rob Hughes Committed by Alexandre Julliard Mar 13, 2019
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socket.c dlls/ws2_32/socket.c +6 -0

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--- 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;
    }