March 29, 2016
4:36 a.m.
Hi Daniel, Some of the Network application use two connections. One connection for control channel to send commands and status update. Other connection is used for real data transfer. For example: FTP. However this needs two socket. TCP talks about out-of-band data transfer using Urgent Pointer flag and Urgent pointer offset in the tcp header. However the data transfer uses the same connection. Regards Manoj Nayak