MONGOC_CURSOR_SET_SERVER_ID(3)

📦
version 2.5.6 · 13 versions
, in epel 10

💅 MONGOC_CURSOR_SET_SERVER_ID(3) — the libmongoc glow-up 🦋

okay bestie, so this one is from libmongoc (the C Driver, aka the main character of talking-to-MongoDB-in-C) and it's literally about hand-picking which server your cursor talks to. no cap, it's a niche little icon and i'm obsessed. 🎀

✨ SYNOPSIS ✨

bool
mongoc_cursor_set_server_id (mongoc_cursor_t *cursor, uint32_t server_id)

that's the whole vibe check: you pass in a cursor and a server id, you get back a bool. simple. clean. slay. 💅

🌸 PARAMETERS 🌸

  • cursor — a mongoc_cursor_t. your cursor bestie, the one you're configuring 🫶
  • server_id — an opaque id identifying the server to use. opaque means don't peek inside it, just pass it along, iykyk 🔥

💖 DESCRIPTION 💖

so this function literally specifies which server to use for the operation. iconic. but here's the catch, and it's a big one:

this function has an effect only if called before the find operation is executed. call it late and it's giving nothing. 😭

and now the important part, because the manpage is very clear about this and i will not let you skip it:

use mongoc_cursor_set_server_id only for building a language driver that wraps the C Driver. that's the whole point of it — it's a tool for driver authors, not for you writing apps in C.

when you're writing applications in C, leave the server id unset and let the driver choose a suitable server from the find operation's read preference. the driver knows what it's doing. trust her. 👑

⭐ RETURNS ⭐

  • returns true on success — yay 🎉
  • if any arguments are invalid, returns false and logs an error. so if you're getting false, go check your args, bestie, because the driver is already telling you what's wrong 🙈

🦋 AUTHOR 🦋

MongoDB, Inc — the legends themselves 💜

2009-present, MongoDB, Inc. — respectfully, that's a long and honestly iconic run 👑

and that's the whole thing! this page came to you courtesy of libmongoc version 2.5.6, dated Oct 09, 2026 — remember to set that server id before the find executes, and go stan a driver author today 🧚✨🍓

📦 where this page comes from