TCP communication between apps

[jyijyi]

Do you mean you don’t want to use IPC to have communication between two applications?

With the application in below link to set up TCP server, I can communicate with other application like “nc 127.0.0.1 5000”

Networking: TCP server Operation not permitted (errno -1)

You can use my TCP echo server application which uses read() instead of recv(). Procedure: compile and download attached application iptables -I INPUT -j ACCEPT app start fwupdateDownloader in Linux PC, type “nc 192.168.2.2 5000” after connected, you can type some characters and the application will echo back to linux PC. fwupdateDownloader.rar (174.0 KB)