Handle WSAECONNRESET to avoid stopping the supernode on Windows

edge_utils.c

@@ -1311,7 +1311,15 @@ static void readFromIPSocket(n2n_edge_t * eee, int in_sock) {
 		     (struct sockaddr *)&sender_sock, (socklen_t*)&i);
 
   if(recvlen < 0) {
-    traceEvent(TRACE_ERROR, "recvfrom failed with %s", strerror(errno));
+#ifdef WIN32
+    if(WSAGetLastError() != WSAECONNRESET)
+#endif
+    {
+      traceEvent(TRACE_ERROR, "recvfrom() failed %d errno %d (%s)", recvlen, errno, strerror(errno));
+#ifdef WIN32
+      traceEvent(TRACE_ERROR, "WSAGetLastError(): %u", WSAGetLastError());
+#endif
+    }
     
     return; /* failed to receive data from UDP */
   }

sn.c

@@ -968,10 +968,17 @@ static int run_loop(n2n_sn_t * sss) {
 	bread = recvfrom(sss->sock, pktbuf, N2N_SN_PKTBUF_SIZE, 0/*flags*/,
 			 (struct sockaddr *)&sender_sock, (socklen_t*)&i);
 
-	if(bread < 0) {
+	if((bread < 0)
+#ifdef WIN32
+	   && (WSAGetLastError() != WSAECONNRESET)
+#endif
+	) {
 	  /* For UDP bread of zero just means no data (unlike TCP). */
 	  /* The fd is no good now. Maybe we lost our interface. */
 	  traceEvent(TRACE_ERROR, "recvfrom() failed %d errno %d (%s)", bread, errno, strerror(errno));
+#ifdef WIN32
+	  traceEvent(TRACE_ERROR, "WSAGetLastError(): %u", WSAGetLastError());
+#endif
 	  keep_running=0;
 	  break;
 	}