I temporarily disabled the Windows firewall, but still can't connect.
Error I get is:
(ErrnoException) libcore.io.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused)."
When the firewall is enabled and the port opened for TCP I get:
"(SocketTimeoutException) java.net.SocketTimeoutException: failed to connect to /192.168.1.15 (port 32118) after 30000ms" followed by:
"(ErrnoException) libcore.io.ErrnoException: fcntl failed: EBADF (Bad file number)"
Go over the code in the B4J example. You will see that it doesn't call ServerSocket.Listen. You will need to modify the code if you want to allow incoming connections.