socket_connect4(3)socket_connect4(3)NAMEsocket_connect4 - attempt to make a TCP connection
SYNTAX
#include <socket.h>
int socket_connect4(int s,const char ip[4],uint16 port);
DESCRIPTIONsocket_connect4 attempts to make a connection from TCP socket s to TCP
port port on IP address ip.
socket_connect4 may return
· 0, to indicate that the connection succeeded (and succeeded
immediately, if the socket is non-blocking)
· -1, setting errno to error_inprogress or error_wouldblock, to
indicate that the socket is non-blocking
· -1, setting errno to something else, to indicate that the con‐
nection 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 appro‐
priately.
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 ALSOsocket_connect6(3)socket_connect4(3)
