ipv6 and ipv4 can not work with one socket at the same time.

Changelog

@@ -1,4 +1,6 @@
 2020-10-18:
+- needed to disable ipv6 on windows for the moment, as long as i can't
+  get both ipv4 and ipv6 to work at the same time.
 - fixed getpeername was not supported on accept connections
 - fixed windows support with TCP sockets. Needed to call closesocket on windows.
 - added support for windows. Everything should work but UNIX sockets.

tcp.cc

@@ -44,10 +44,14 @@ int TCP::Listen(int port) {
     struct addrinfo hints, *res, *rp;
 
 	if (sock > 0) Close();
-
+// FIXME: solution to get both (IPV4 and IPV6) to work at the same time?
 	bzero (&hints, sizeof (struct addrinfo));
     hints.ai_flags = AI_PASSIVE;
+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)
+    hints.ai_family = AF_INET;
+#else
     hints.ai_family = AF_INET6;
+#endif
     hints.ai_socktype = SOCK_STREAM;
     if ((err = getaddrinfo (NULL, itoa(buffer, port, 32), &hints, &res)) != 0) {
     	return 0;

test-tcpserver.cc

@@ -35,6 +35,7 @@ int main(int argc, char **argv) {
 	while(1) {
 		if (connection == NULL) {
 			connection = tcpserver.Accept();
+			printf ("accept connection? %p\n", connection);
 			if (connection != NULL)
 				printf ("   server: got a new connection from:%s\n", connection->GetRemoteAddr().c_str());
 		}