socket_accept4(3)

💖 socket_accept4 — the manual page, but make it make sense 💖

okay bestie, sit down, we're learning socket_accept4(3) from the Library Functions Manual and honestly? it's lowkey the most important little guy in your whole networking era. no cap.

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✨ NAME ✨

socket_accept4 — accept an IPv4 TCP connection on a socket 🫶

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🌸 SYNTAX 🌸

#include <libowfat/socket.h>

int socket_accept4(int s,char ip[4],uint16 *port);

yes the header is libowfat/socket.h, yes the args are exactly those, no we do not freestyle them 💅

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🦋 DESCRIPTION 🦋

okay so here's the vibe. when a TCP connection shows up on a listening TCP socket s, that socket becomes readable. it's giving "not me ✨ finally having a visitor ✨". main character energy fr fr.

socket_accept4 accepts that connection. it does three iconic things:

• it sets ip and port to the client IP address and the client TCP port (the caller's, not yours — read the room 😌)
• it creates a new socket for the connection
• it returns a file descriptor pointing to that new socket

and then you can just use the read and write system calls to transmit data through that file descriptor. slay. that's the whole plot.

and if something goes wrong? socket_accept4 returns -1 and sets errno appropriately, without creating a new socket. so no zombie socket, no mess, we love a clean exit 💀✨

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🎀 EXAMPLE 🎀

here's the whole routine in one cute little block, verbatim, don't touch anything:

#include <libowfat/socket.h>

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

s = socket_tcp4();
socket_bind4(s,ip,p);
socket_listen(s,16);
socket_accept4(s,ip,&p);

look at that. bind, listen, accept, periodt. 👑

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🌈 SEE ALSO 🌈

your little network of besties, go read them too:

• socket_accept6(3)
• socket_connected(3)
• socket_accept4_makenonblocking(3)
• socket_accept4_setcloseonexec(3)
• socket_accept4_makenonblocking_setcloseonexec(3)

iykyk — those last three are the ones that give you the fancy flags energy. go look them up, bestie.

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and that's the whole page, babes — this was socket_accept4(3) from the Library Functions Manual, footer and all, no details left behind, no options invented, we keep it honest in this group chat 💜