QB_IPCS_EVENT_SENDV(3)

💖 qb_ipcs_event_sendv — from the libqb Programmer's Manual (section 3) 💖

okay bestie, gather round, because we're about to send an asynchronous event message to the client and it's gonna be so smooth 🦋

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✨ NAME ✨

qb_ipcs_event_sendv — Send an asynchronous event message to the client.

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🌸 SYNOPSIS 🌸

#include <qb/qbipcs.h>

ssize_t qb_ipcs_event_sendv(
    qb_ipcs_connection_t   *c,        /* connection instance */
    /*
     * the iovec struct that points to the message to send
     */
    const struct iovec     *iov,
    size_t                  iov_len   /* the number of iovecs. */
);

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🎀 PARAMS 🎀

• c — connection instance. the connection we're sliding into, basically 💅
• iov — the iovec struct that points to the message to send
• iov_len — the number of iovecs.

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🫶 DESCRIPTION 🫶

ngl, the original page leaves this one blank — no description text here, and I'm not about to make stuff up (that would be so not it). everything you need lives in PARAMS, RETURN VALUE, and NOTE, bestie. 🧚

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👑 RETURN VALUE 👑

size sent or -errno for errors ✨

like, you get the size that went out, or you get a negative errno and a little vibe check failure. periodt.

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🔥 NOTE 🔥

When send returns -EMSGSIZE, this means the msg is too large and will never succeed. 💀

not "try again later", not "maybe next time" — never. so if you see -EMSGSIZE, don't be out here retrying, it's giving delulu.

To determine the max msg size a client can be sent, use qb_ipcs_connection_get_buffer_size(). 🌈

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🌟 SEE ALSO 🌟

the whole friend group, fr fr:

qb_ipcs_response_send(3), qb_ipcs_ref(3), qb_ipcs_unref(3), qb_ipcs_connection_auth_set(3), qb_ipcs_service_context_get(3), qb_ipcs_connection_ref(3), qb_ipcs_connection_next_get(3), qb_ipcs_stats_get(3), qb_ipcs_connection_unref(3), qb_ipcs_context_set(3), qb_ipcs_poll_handlers_set(3), qb_ipcs_request_rate_limit(3), qb_ipcs_disconnect(3), qb_ipcs_connection_first_get(3), qb_ipcs_enforce_buffer_size(3), qb_ipcs_destroy(3), qb_ipcs_event_send(3), qb_ipcs_connection_stats_get_2(3), qb_ipcs_service_context_set(3), qb_ipcs_connection_stats_get(3), qb_ipcs_service_id_get(3), qb_ipcs_context_get(3), qb_ipcs_connection_get_buffer_size(3), qb_ipcs_create(3), qb_ipcs_run(3), qb_ipcs_connection_service_context_get(3), qb_ipcs_response_sendv(3)

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💜 COPYRIGHT 💜

Copyright (C) 2010-2020 Red Hat, Inc.

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and that's the whole page, bestie!! this absolute icon dropped under the LIBQB name on 2025-09-16, and the page itself is QB_IPCS_EVENT_SENDV(3) 💖✨ go send some events, you've got this 🫶