BSD Sockets Interface Programmer's Guide

Chapter 7 149

Using UNIX Domain Datagram Sockets

Overview

Table 7-1 Exchanging Data Between UNIX Domain Datagram Sockets

Each of these steps or activities is described in more detail in the

following sections. The description of each activity speciﬁes a system and

includes:

• What happens when the system call is used.

• When to make the call.

• What the parameters do.

• Where to ﬁnd details on the system call.

The domain datagram sockets programming examples are at the end of

these descriptive sections. You can refer to the example code as you work

through the descriptions.

Client

Process

Activity

System

Call Used

Server Process

Activity

System Call

Used

create a socket socket() create a socket socket()

bind a socket bind() bind a socket bind()

send message sendto()

sendmsg()

receive message recvfrom()

or recvmsg()

send message sendto() or

sendmsg()

receive

message

recvfrom()

recvmsg()