libssh2_session_banner_set(3)

✨ libssh2_session_banner_set ✨

okay so bestie, we're in the libssh2 manual, and today's main character is libssh2_session_banner_set(3) — the little function that lets you pick the SSH protocol banner your local client sends out into the world. 💅

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🎀 NAME 🎀

libssh2_session_banner_set — set the SSH protocol banner for the local client. yes that's it. that's the whole job. and she does it flawlessly. 👑

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🌸 SYNOPSIS 🌸

#include <libssh2.h>

int
libssh2_session_banner_set(LIBSSH2_SESSION *session, const char *banner);

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💖 DESCRIPTION 💖

okay so, two things you're handing over:

• session — the Session instance, as returned by libssh2_session_init_ex(3). your whole vibe container fr.
• banner — a pointer to a zero-terminated string holding the user defined banner. so like, your string. cute, custom, yours. 🦋

and what does she do with it?? she sets the banner that will be sent to the remote host when the SSH session is started with libssh2_session_handshake(3). that's the moment it goes out into the world. ✨

now — this is optional, okay? nobody's forcing you. if you don't call this, a banner corresponding to the protocol and libssh2 version will be sent by default. so she has a default fit already picked out; this function is just for when you wanna dress her up yourself. 💖

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⭐ RETURN VALUE ⭐

Returns 0 on success or negative on failure. and if it would otherwise block? it returns LIBSSH2_ERROR_EAGAIN. 🫠

now listen, and this is important: while LIBSSH2_ERROR_EAGAIN is a negative number, it is not really a failure per se. it's giving "not right now bestie, try again later," not "everything is on fire." don't panic. 💀

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🙈 ERRORS 🙈

• LIBSSH2_ERROR_ALLOC — An internal memory allocation call failed. the malloc said no. 😭

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🌈 AVAILABILITY 🌈

Added in 1.4.0. 🎉

and lowkey a glow-up moment: before 1.4.0 this function was known as libssh2_banner_set(3). she rebranded. iconic behavior honestly. 👑

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🧚 SEE ALSO 🧚

• libssh2_session_handshake(3)
• libssh2_session_banner_get(3)

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that's the whole page, bestie, no notes, no cap. this was libssh2, dated 9 Sep 2011 — and if you got this far, you're officially a banner-setting legend. go set a banner. make it weird. 🫶💖✨🌸🦋