SCTP_SEND(3)

💖 SCTP_SEND 💖

okay bestie, gather round, because we're talking about sctp_send from the Linux Programmer's Manual, section 3 (that's the library-functions girlies, iykyk) 🫶

✨ NAME ✨

sctp_send — send a message from a SCTP socket. that's it, that's the job 💅

🌸 SYNOPSIS 🌸

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/sctp.h>

int sctp_send(int sd, const void * msg, size_t len,
                 const struct sctp_sndrcvinfo *sinfo,
                 uint32_t flags);

like, look at her. she's so clean. no cap. ✨

🦋 DESCRIPTION 🦋

so sctp_send is a wrapper library function, and the whole point of her existence is that you can send a message from a socket without having to mess with the CMSG header structures. the way that you get to skip all that scaffolding?? iconic. no notes. 💖

here's the breakdown, bestie:

• sd — the socket descriptor, aka the one you're sending from 🎀
• msg — a pointer to the message itself, the actual thing getting yeeted out into the world
• len — how long that message is
• sinfo — a pointer to a sctp_sndrcvinfo structure. she's carrying the extra info, main character energy fr fr
• flags — this one is a bitwise OR of the flags you'd normally pass as the 3rd argument of a standard sendmsg() call 🔥

so basically: sd, msg, len, sinfo, flags, boom, message sent, slay. that's the whole vibe. 🌈

⭐ RETURN VALUE ⭐

on success, sctp_sendmsg returns the number of bytes sent. and if something went wrong? she hits you with the -1. 😭 that's the error signal, bestie, don't ignore her.

👑 SEE ALSO 👑

go read these too, they're all in the same friend group:

• sctp(7)
• sctp_bindx(3)
• sctp_recvmsg(3)
• sctp_recvv(3)
• sctp_peeloff(3)
• sctp_getpaddrs(3)
• sctp_getladdrs(3)
• sctp_opt_info(3)
• sctp_sendmsg(3)
• sctp_sendv(3)

ngl the whole squad is here. go forth and send your messages. 💌

mwah 💋 this page came from the Linux 2.6 era, dated 2005-10-25, and she's still serving. periodt.