The most common way is to use adb command to forward tcp port, such as forwarding TCP port 5039 during gdb debugging. The command is as follows:

$ adb forwards tcp:5039 tcp:5039

If you want to forward device files in Android devices, such as /dev/input/event0, you can do this:

$ ADB forward TCP:800 1 dev:/dev/input/event 0

In this way, you can read and write /dev/input/event0 in Android devices by reading and writing tcp port 800 1 on your computer.

Verification:

You can refer to system/core/libutils/socket _ network _ client.c to quickly create a socket client program:

int FD = socket _ network _ client(" 127 . 0 . 0 . 1 "，800 1，SOCK _ STREAM)；

while (true) {

Unsigned character buffer [1024];

int len = recv(fd，buffer， 1024，0)；

//Dump buffer information ...

}