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(libc.info)Connections

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Using Sockets with Connections
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   The most common communication styles involve making a connection to a
particular other socket, and then exchanging data with that socket over
and over.  Making a connection is asymmetric; one side (the "client")
acts to request a connection, while the other side (the "server") makes
a socket and waits for the connection request.

Connecting

What the client program must do.

Listening

How a server program waits for requests.

Accepting Connections

What the server does when it gets a request.

Who is Connected

Getting the address of the

other side of a connection.

Transferring Data

How to send and receive data.

Byte Stream Example

An example program: a client for communicating

over a byte stream socket in the Internet namespace.

Server Example

A corresponding server program.

Out-of-Band Data

This is an advanced feature.