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Man Pages


Manual Reference Pages  -  LIBOWFAT_SOCKET_CONNECT4 (3)

NAME

socket_connect4 - attempt to make a TCP connection

CONTENTS

Syntax
Description
Example

SYNTAX

#include <socket.h>

int socket_connect4(int s,const char ip[4],uint16 port);

DESCRIPTION

socket_connect4 attempts to make a connection from TCP socket s to TCP port port on IP address ip.

socket_connect4 may return

o 0, to indicate that the connection succeeded (and succeeded immediately, if the socket is non-blocking)
o -1, setting errno to error_inprogress or error_wouldblock, to indicate that the socket is non-blocking
o -1, setting errno to something else, to indicate that the connection failed (and failed immediately, if the socket is non-blocking).

When a background connection succeeds or fails, s becomes writable; you can use socket_connected to see whether the connection succeeded. If the connection failed, socket_connected returns 0, setting errno appropriately.

Once a TCP socket is connected, you can use the read and write system calls to transmit data.

You can call socket_connect4 without calling socket_bind4. This has the effect as first calling socket_bind4 with IP address 0.0.0.0 and port 0.

EXAMPLE

#include <socket.h>

int s;
char ip[4];
uint16 p;

s = socket_tcp4();
socket_bind4(s,ip,p);
socket_connect4(s,ip,p);

SEE ALSO

socket_connect6(3)
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