radcli_dae_...y_to_buffer(3)

📦 version 2.0.1, in arch rolling

💅 radcli_dae_reply_to_buffer(3) — like, the manual page, bestie

okay so this is a page from the Radius client library (radcli) and honestly? it's a little niche but it ATE. let's get into it 🫶

✨ NAME ✨

radcli_dae_reply_to_buffer — produce a reply as bytes instead of actually sending it. it's the L0 counterpart of radcli_dae_reply() / radcli_dae_reply_error(), and it's for a request that came out of radcli_dae_process(). no cap 💅

🦋 SYNOPSIS 🦋

#include <radcli/>

int radcli_dae_reply_to_buffer(
    radcli_dae_request  *req,
    int                  ack,
    uint32_t             error_cause,
    void                *buf,
    size_t              *len
);

🌸 DESCRIPTION 🌸

so here's the vibe. if radcli_dae_process() handed you back RADCLI_DAE_DUPLICATE for a request, then ack and error_cause are literally ignored. why? because a genuine retransmission always gets the same answer it originally got (that's RFC 5176 §2.3, periodt 🔥) — never a fresh one. so the bytes you get out are always that cached decision's bytes. icon behaviour, honestly.

🎀 PARAMETERS 🎀

  • req — a request from radcli_dae_process(), not yet replied to (unless it's a RADCLI_DAE_DUPLICATE, and in that case you can call this any number of times, go off 👑).
  • ack — non-zero for an ACK, zero for a NAK. ignored if req is a RADCLI_DAE_DUPLICATE.
  • error_cause — a radcli_error_cause value for a NAK, or 0 for a bare one. ignored if req is a RADCLI_DAE_DUPLICATE.
  • buf — filled with the reply's bytes on success 💖.
  • len — buf's capacity on entry; the reply's actual length on success.

⭐ RETURN VALUE ⭐

  • 0 on success, slay ✨
  • -1 on failure 😭 — and that's when any argument is NULL, or req was already replied to and isn't a RADCLI_DAE_DUPLICATE, or buf is too small.
ngl, "buf too small" is the classic. size your buffers, bestie 🍓

🔥 SEE ALSO 🔥

radcli_ctx_dispatch(3), radcli_ctx_get_poll(3), radcli_dae_free(3), radcli_dae_new(3), radcli_dae_process(3), radcli_dae_reply(3), radcli_dae_reply_error(3), radcli_dae_req_attrs(3), radcli_dae_req_code(3), radcli_dae_req_framed_ip(3), radcli_dae_req_nas_port(3), radcli_dae_req_session_id(3), radcli_dae_req_user_name(3), radcli_dae_request_free(3), radcli_dae_set_handler(3), radcli_dae_start(3)

okay that's the whole page, mwah 💋 this one's from radcli, dated 2026-10-10 — go read the other radcli_dae_* pages, iykyk 🌈🦋💜

📦 where this page comes from