HP Rp7410 BSD Sockets Interface Programmer's Guide - Page 152

Creating Sockets

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Using UNIX Domain Datagram Sockets Writing the Server and Client Processes Writing the Server and Client Processes This section discusses the calls your server and client processes must make. Creating Sockets Both processes must call socket to create communication endpoints. socket and its parameters are described in the following table. Include files: System call: #include #include s = socket(af, type, protocol) int af, type, protocol; Parameter Description of Contents INPUT Value af type protocol address family socket type underlying protocol to be used AF_UNIX SOCK_DGRAM 0 (default) Function result: socket number (HP-UX file descriptor) if successful, -1 if socket call fails. Example: #include #include ... s = socket(AF_UNIX, SOCK_DGRAM, 0) When to Create Sockets The server or client process should create sockets before any other BSD Sockets system calls. Refer to the socket(2) man page for more information on socket. 152 Chapter 7

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152
Chapter 7
Using UNIX Domain Datagram Sockets
Writing the Server and Client Processes
Writing the Server and Client Processes
This section discusses the calls your server and client processes must
make.
Creating Sockets
Both processes must call
socket
to create communication endpoints.
socket
and its parameters are described in the following table.
Include files:
#include <sys/types.h>
#include <sys/socket.h>
System call:
s = socket(af, type, protocol)
int af, type, protocol;
Function result:
socket number (HP-UX file descriptor) if successful, -1
if socket call fails.
Example:
#include <sys/type.h>
#include <sys/socket.h>
...
s = socket(AF_UNIX, SOCK_DGRAM, 0)
When to Create Sockets
The server or client process should create sockets before any other BSD
Sockets system calls. Refer to the
socket(2)
man page for more
information on
socket
.
Parameter
Description of Contents
INPUT Value
af
address family
AF_UNIX
type
socket type
SOCK_DGRAM
protocol
underlying protocol to be
used
0 (default)