CS558 Sylabus

Advanced network programming: non-blocking sockets

Default socket behavior for the read operation:

The read operation on a socket by default is:
The program will wait until a message on the socket is received; then the read operation will return (with the data in the newly received message)

Non-blocking socket:

You can change a socket into non-blocking using the following C-function call:

fcntl(socket_variable, F_SETFL, fcntl(recvfd, F_GETFL)|O_NDELAY);