NNG_CTX_ID(3)

✨ NAME ✨

nng_ctx_id — bestie, it hands you back the numeric id of a context 💅

It's a lil function from the NNG Reference Manual, and it is genuinely so simple it's giving main character energy.

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🌸 SYNOPSIS 🌸

#include <nng/nng.h>

int nng_ctx_id(nng_ctx c);

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🎀 DESCRIPTION 🎀

okay so. nng_ctx_id() gives you a positive identifier for the context c — but ONLY if that context is valid, no cap. If it's not valid? It returns -1. that's it, that's the whole vibe 🦋

Note 🙈 A context counts as valid if it was ever opened with the nng_ctx_open() function. So if you've got contexts chillin' on the stack or declared statically, you should initialize them with the macro NNG_CTX_INITIALIZER so they literally cannot get confused with a valid context before they've been opened. protect your peace (and your ids) 🫶

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💖 RETURN VALUES 💖

• It returns the positive value of the context identifier 💅
• Or -1 if the context is invalid 😭

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💀 ERRORS 💀

None. not a single one. flawless. iconic. zero problems. periodt ✨

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👑 SEE ALSO 👑

• nng_ctx(5)
• nng(7)

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that's the whole page, bestie — short, sweet, and it ate 🌈💜

signing off with the receipts: this was the NNG Reference Manual, dated 2026-06-30 🎀 tysm for reading, mwah 💖