We already said that the basic function for creating sockets and working with them are identical for all supported address families. In a C program, an IPv6/TCP socket can be created in the usual way:

To make the long story short, all basic socket functions remain unchanged. Here is an alphabetical list with short descriptions (see the on-line manual pages for details):

bind()

Bind the socket to a local address.

close()

Close the socket.

connect()

Connect to a remote host.

getpeername()

Obtain the address of the remote end.

getsockopt()

Get the socket options.

listen()

Listen on the socket (wait for a connection request).

recv()

Read data from the connected socket. address.

recvfrom()

Read data from a specified source (mainly used with UDP sockets).

send()

Send data to a connected socket.

sendto()

Send data to a specified destination (mainly used with UDP sockets).

setsockopt()

Set socket options.

shutdown()

Terminate the communication in one or both directions.