socket

ref

• www.gnu.org/s/libc/manual/pdf/libc.pdf or http://www.gnu.org/software/libc/manual/html_node/Sockets.html#Sockets for Sockets

demo

• android localSocket
• https://github.com/cheyiliu/test4c/tree/master/socket
• https://github.com/cheyiliu/test4java/tree/master/src/com/sun/stun
• https://github.com/cheyiliu/test4java/tree/master/src/test/socket