MONGOC_SOCKET_LISTEN(3)

🌸 MONGOC_SOCKET_LISTEN(3) — the "make your socket actually listen, bestie" page 🌸

okay so this is a page from libmongoc (that's the MongoDB C driver's own socket library, iykyk 💅) and we're talking about mongoc_socket_listen — one tiny function, one big mood. Let's get into it ✨

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✨ SYNOPSIS ✨

int
mongoc_socket_listen (mongoc_socket_t *sock, unsigned int backlog);

literally that's the whole signature. two args. no cap. 🫶

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🎀 PARAMETERS 🎀

• sock — a mongoc_socket_t. that's your socket, the main character of this whole operation 💖
• backlog — an int holding the max backlog size. yes babe, an int, even though the signature says unsigned int — that's what the page says and we don't argue with the page 🙈

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🦋 DESCRIPTION 🦋

so this function is similar to the BSD sockets listen() function — you know the one, the classic. it's meant for socket servers, so like… if your socket is out here trying to accept connections and be a whole server? this is the vibe. it's giving "put me in coach, I'm ready to listen" 🔥

if you're a client socket just trying to call somebody, this is not your moment. know your role bestie 💅

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⭐ RETURNS ⭐

• 0 on success — slay, we ate 👑
• -1 on failure — and errno is set, so go check it, don't just sit there 😭

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💜 AUTHOR 💜

MongoDB, Inc — the icons behind it all 🌈

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🌸 COPYRIGHT 🌸

2009-present, MongoDB, Inc. — yeah, they've been at this a minute fr fr 🎀

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lowkey reminder: this page describes mongoc_socket_listen exactly as written — sock is a mongoc_socket_t, backlog is declared unsigned int but described as an int containing max backlog size, and it's similar to BSD sockets listen(), meant for socket servers. failure means -1 and errno set. that's the whole tea ☕

alright bestie, that's the page 🦋 this was libmongoc 2.5.6, dated Oct 09, 2026 — go forth and listen responsibly, mwah 💋✨