From: Marc Hoersken <info@marc-hoersken.de>
Date: Sun, 2 May 2021 18:42:11 +0000 (+0200)
Subject: sockfilt: avoid getting stuck waiting for writable socket
X-Git-Tag: curl-7_77_0~87
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9239e0f9ce64479b7e77472196c958aa388ae7e;p=thirdparty%2Fcurl.git

sockfilt: avoid getting stuck waiting for writable socket

Reset FD_WRITE event using the same approach as in multi.c

Follow up to b36442b24305f3cda7c13cc64b46838995a4985b
Closes #6992
---

diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index e29e118714..7009b2585b 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -741,6 +741,9 @@ static int select_ws(int nfds, fd_set *readfds, fd_set *writefds,
       else {
         wsaevent = WSACreateEvent();
         if(wsaevent != WSA_INVALID_EVENT) {
+          if(wsaevents.lNetworkEvents & FD_WRITE) {
+            send(wsasock, NULL, 0, 0); /* reset FD_WRITE */
+          }
           error = WSAEventSelect(wsasock, wsaevent, wsaevents.lNetworkEvents);
           if(error != SOCKET_ERROR) {
             handles[nfd] = (HANDLE)wsaevent;