Support failed async connects on windows.

1 files changed, 17 insertions, 2 deletions

diff --git a/sockcompat.c b/sockcompat.c
index f99d14b..31df325 100644
--- a/sockcompat.c
+++ b/sockcompat.c
@@ -180,10 +180,17 @@ int win32_connect(SOCKET sockfd, const struct sockaddr *addr, socklen_t addrlen)
 
     /* For Winsock connect(), the WSAEWOULDBLOCK error means the same thing as
      * EINPROGRESS for POSIX connect(), so we do that translation to keep POSIX
-     * logic consistent. */
-    if (errno == EWOULDBLOCK) {
+     * logic consistent.
+     * Additionally, WSAALREADY is can be reported as WSAEINVAL to  and this is
+     * translated to EIO.  Convert appropriately
+     */
+    int err = errno;
+    if (err == EWOULDBLOCK) {
         errno = EINPROGRESS;
     }
+    else if (err == EIO) {
+        errno = EALREADY;
+    }
 
     return ret != SOCKET_ERROR ? ret : -1;
 }
@@ -205,6 +212,14 @@ int win32_getsockopt(SOCKET sockfd, int level, int optname, void *optval, sockle
     } else {
         ret = getsockopt(sockfd, level, optname, (char*)optval, optlen);
     }
+    if (ret != SOCKET_ERROR && level == SOL_SOCKET && optname == SO_ERROR) {
+        /* translate SO_ERROR codes, if non-zero */
+        int err = *(int*)optval;
+        if (err != 0) {
+            err = _wsaErrorToErrno(err);
+            *(int*)optval = err;
+        }
+    }
     _updateErrno(ret != SOCKET_ERROR);
     return ret != SOCKET_ERROR ? ret : -1;
 }