netinet_tcp.h(0P)

📦 version 2017a, in alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, nixpkgs unstable, opensuse-leap 16.0

💖 netinet_tcp.h — bestie edition 💖

okay so real talk, this is a page from the POSIX Programmer's Manual (the 0P girlies know), so let me fold that in right at the top instead of making it a whole separate thing. ✨

🌸 PROLOG 🌸

So this manual page is part of the POSIX Programmer's Manual, periodt. But heads up bestie — the Linux implementation of this interface may differ, so go consult the corresponding Linux manual page for the deets on Linux behavior. OR. Plot twist. The interface might not even be implemented on Linux at all. 😭 It's giving "your mileage may vary."

✨ NAME ✨

netinet/tcp.h — definitions for the Internet Transmission Control Protocol (TCP) 🦋

🎀 SYNOPSIS 🎀

#include <netinet/tcp.h>

that's it. that's the whole vibe. 💅

👑 DESCRIPTION 👑

okay so the <netinet/tcp.h> header shall define the following symbolic constant, for use as a socket option at the IPPROTO_TCP level:

  • TCP_NODELAY — Avoid coalescing of small segments. like, stop smushing the tiny packets together, let them be their own little main characters. 🔥
⚠️ lowkey important: the implementation need not allow the value of the option to be set via setsockopt() or retrieved via getsockopt(). so don't come for the implementation if it won't play along, it's literally allowed to say no. 💀

The following sections are informative. (translation: they're the fun bonus content, not the binding rules 🫶)

🌈 APPLICATION USAGE 🌈

None. 💜

(not a single one. we simply have nothing to add. iconic behavior honestly.)

🧚 RATIONALE 🧚

None. 🌸

⭐ FUTURE DIRECTIONS ⭐

None. 💖

🦋 SEE ALSO 🦋

  • <sys_socket.h>
  • The System Interfaces volume of POSIX.1‐2017, getsockopt(), setsockopt()

go read those, iykyk. 📚

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

and that's the whole page bestie!! 🎀 this one came to you from IEEE/The Open Group, dated 2017, and yeah, the header on the tin says netinet_tcp.h(0P) — go forth and not coalesce those small segments, you absolute legend. 💖✨

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