KNET_HOS...HOST_LIST(3)

✨ KNET_HOST_GET_HOST_LIST — the "who's even here??" function 💖

okay bestie so this is knet_host_get_host_list(3) from the Kronosnet Programmer's Manual, and it does exactly what it says on the tin: it hands you the roster of every host knet currently knows about. like a group chat member list but for your network. 🫶

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🌸 NAME 🌸

knet_host_get_host_list — get a list of hosts known to knet. that's it. that's the whole job. no cap. 👑

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💅 SYNOPSIS 💅

#include <libknet.h>

int knet_host_get_host_list(
    knet_handle_t     knet_h,
    knet_node_id_t   *host_ids,
    size_t           *host_ids_entries
);

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🦋 DESCRIPTION 🦋

knet_host_get_host_list is the function, and here's the tea on every single one of its arguments, no skipping:

• knet_h — pointer to knet_handle_t. your main character handle, the one you got from knet_handle_new and friends. it's giving "the source of all truth". ✨
• host_ids — array of at least KNET_MAX_HOST size. like, actually size it for KNET_MAX_HOST, bestie. it's gonna get filled up with host IDs and you do NOT want it overflowing, that's not the vibe. 😭
• host_ids_entries — number of entries written in host_ids. so you pass it in, the function fills your array, and this tells you how many slots actually got used. lowkey the most important number in the whole call. 🎀

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🔥 RETURN VALUE 🔥

knet_host_get_host_list returns 0 on success, and -1 on error, in which case errno is set. so like, check your return value, okay? 0 = slay, -1 = check errno, we've all been there. 💀

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🌈 SEE ALSO 🌈

the whole extended universe, fr fr. go read all of these:

knet_handle_remove_datafd(3), knet_handle_get_stats(3), knet_host_add(3), knet_handle_pmtud_setfreq(3), knet_handle_pmtud_get(3), knet_handle_crypto_use_config(3), knet_host_get_id_by_host_name(3), knet_host_get_status(3), knet_link_add_acl(3), knet_link_get_pong_count(3), knet_link_get_priority(3), knet_handle_free(3), knet_handle_enable_sock_notify(3), knet_handle_get_datafd(3), knet_recv(3), knet_link_get_ping_timers(3), knet_log_get_subsystem_id(3), knet_host_remove(3), knet_host_enable_status_change_notify(3), knet_strtoaddr(3), knet_link_rm_acl(3), knet_send(3), knet_handle_enable_pmtud_notify(3), knet_get_crypto_cipher_list(3), knet_handle_get_transport_reconnect_interval(3), knet_link_get_enable(3), knet_link_set_priority(3), knet_log_set_loglevel(3), knet_handle_get_channel(3), knet_link_get_config(3), knet_link_get_link_list(3), knet_get_crypto_hash_list(3), knet_get_transport_list(3), knet_get_transport_id_by_name(3), knet_log_get_loglevel_id(3), knet_handle_new_ex(3), knet_host_set_name(3), knet_addrtostr(3), knet_handle_setfwd(3), knet_get_compress_list(3), knet_host_set_policy(3), knet_get_transport_name_by_id(3), knet_handle_enable_filter(3), knet_handle_crypto_rx_clear_traffic(3), knet_handle_compress(3), knet_link_get_status(3), knet_handle_add_datafd(3), knet_send_sync(3), knet_log_get_loglevel_name(3), knet_handle_enable_access_lists(3), knet_host_get_policy(3), knet_link_set_enable(3), knet_link_set_pong_count(3), knet_log_get_subsystem_name(3), knet_host_get_name_by_host_id(3), knet_link_clear_config(3), knet_log_get_loglevel(3), knet_handle_new(3), knet_handle_pmtud_getfreq(3), knet_handle_pmtud_set(3), knet_handle_clear_stats(3), knet_link_set_config(3), knet_handle_crypto_set_config(3), knet_handle_crypto(3), knet_get_crypto_list(3), knet_handle_set_transport_reconnect_interval(3), knet_link_clear_acl(3), knet_link_set_ping_timers(3), knet_handle_setprio_dscp(3), knet_link_insert_acl(3)

iykyk. 📚

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💜 COPYRIGHT 💜

Copyright (C) 2010-2026 Red Hat, Inc. All rights reserved.

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and that's the whole page, bestie!! 🌟 this gem comes to you from kronosnet, dated 2026-07-20 — go populate that host_ids array and live your truth. bye babe, mwah 💅💖