LIBRESSL-SSL_SESSION_GET_COMPRESS_ID(3)

💅 LIBRESSL-SSL_SESSION_GET_COMPRESS_ID(3) 💅

okay so bestie, this one lives in the libssl / libcrypto family (yes, both, they're like sisters, iykyk) and honestly it's a lil baby function that just tells you about compression on an SSL session 🎀

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✨ NAME ✨

SSL_SESSION_get_compress_id — get the deets about the compression that's associated with a session, periodt 💖

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🌸 SYNOPSIS 🌸

library “libssl” libcrypto
#include <openssl/ssl.h>

unsigned int
SSL_SESSION_get_compress_id(const SSL_SESSION *s);

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🦋 DESCRIPTION 🦋

so here's the tea ☕ — if compression has actually been negotiated for an ssl session, then SSL_SESSION_get_compress_id() hands you back the id for that compression method. and if it hasn't? it just returns 0, no drama, no cap 🙈

and the only built-in supported compression method is zlib, which has an id of 1. that's the whole squad, literally one member 💀

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👑 SEE ALSO 👑

like, go read these too bestie, they're all iconic in their own way:

• ssl(3)
• SSL_get_session(3)
• SSL_SESSION_get_id(3)
• SSL_SESSION_get_protocol_version(3)
• SSL_SESSION_new(3)

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🌈 HISTORY 🌈

SSL_SESSION_get_compress_id() first appeared in OpenSSL 1.0.1 and has been available since OpenBSD 5.3 ✨ so she's been around, she's got main character energy, she's not new here 🫶

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aaaand that's the page 🎀 it's giving short but iconic, ngl. this version is from the Debian fam, dated June 8, 2025, and it's titled SSL_SESSION_GET_COMPRESS_ID(3) — slay, go compress some things (or don't, zlib's the only one invited anyway) 💜