客户端连接到服务器时出现超时错误

I'm trying to do port forwarding between my linux machine and android device so that I can send data to each other through a usb. The port that i'm connecting them both to is 38300 and I have run this command in the terminal; ./adb forward tcp:38200 tcp:38200. I run the app and try to connect, but I get an connection has timed out message. Was wondering if anyone had a clue about this. I'm running the server on my android device as an app and the client on my pc machine. I'm trying to do port forwarding between my lin