09-12-2002
When you create a TCP/IP connection the received side and the transmit side work together, when playing client-server.
If you use a TCP socket to send 100 bytes and you use a TCP socket to receive 100 bytes or more, you are ok.
If the client socket sends one byte / char at a time (like TELNET does) then you will only receive one byte / char at a time.
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LEARN ABOUT DEBIAN
socket_connect4
socket_connect4(3) Library Functions Manual socket_connect4(3)
NAME
socket_connect4 - attempt to make a TCP connection
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)
socket_connect4(3)