rc_get_srcaddr(3)

💖 rc_get_srcaddr(3) 💖

okay bestie, so this one lives in the Radius client library (that's the manual family it's filed under, mwah) and it's genuinely one of the cutest little utility functions in the whole set. no cap.

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✨ NAME ✨

rc_get_srcaddr -

(no fr, that's literally all the NAME section says 💀 the description field is just… empty. the void. we love a mysterious queen 👑)

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🌸 SYNOPSIS 🌸

#include <radcli/radcli.h>

int rc_get_srcaddr(
    struct sockaddr        *lia,
    const struct sockaddr  *ria
);

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🦋 DESCRIPTION 🦋

Find outbound interface address for a given destination 🛰️

Okay so here's the vibe: you hand this function a remote address, and it figures out which local address your system would use as the source address when it sends datagrams to that remote address. it's giving "which of my faces am I showing to this person" energy, and honestly? iconic.

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🎀 PARAMETERS 🎀

• lia — the local address. this is where the answer gets dropped off 💌 (local address, bestie, that's the one you want filled in)
• ria — the remote address. the destination. the one you're asking about 🗺️

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🔥 RETURN VALUE 🔥

• OK_RC — slay, it worked ✨ success, periodt.
• NETUNREACH_RC — if the network is unreachable, i.e. there's literally no route to the destination 🚫🛣️
• ERROR_RC — for all other failures 😭

and the actual address gets filled into the first argument (lia), so that's where you go looking. 🫶

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👑 SEE ALSO 👑

the whole girl squad, fr fr:

radcli.h(3), rc_aaa(3), rc_aaa_ctx(3), rc_aaa_ctx_free(3), rc_aaa_ctx_get_secret(3), rc_aaa_ctx_get_vector(3), rc_aaa_ctx_server(3), rc_acct(3), rc_acct_proxy(3), rc_add_config(3), rc_apply_config(3), rc_auth(3), rc_auth_proxy(3), rc_avpair_add(3), rc_avpair_assign(3), rc_avpair_copy(3), rc_avpair_free(3), rc_avpair_gen(3), rc_avpair_get(3), rc_avpair_get_attr(3), rc_avpair_get_in6(3), rc_avpair_get_raw(3), rc_avpair_get_uint32(3), rc_avpair_insert(3), rc_avpair_log(3), rc_avpair_new(3), rc_avpair_next(3), rc_avpair_parse(3), rc_avpair_remove(3), rc_avpair_tostr(3), rc_buildreq(3), rc_check(3), rc_check_tls(3), rc_conf_int(3), rc_conf_srv(3), rc_conf_str(3), rc_config_free(3), rc_config_init(3), rc_destroy(3), rc_dict_addattr(3), rc_dict_addval(3), rc_dict_addvend(3), rc_dict_findattr(3), rc_dict_findval(3), rc_dict_findvend(3), rc_dict_free(3), rc_dict_getattr(3), rc_dict_getval(3), rc_dict_getvend(3), rc_find_server_addr(3), rc_get_socket_type(3), rc_get_srcaddr(3), rc_getport(3), rc_mksid(3), rc_new(3), rc_openlog(3), rc_own_hostname(3), rc_read_config(3), rc_read_dictionary(3), rc_read_dictionary_from_buffer(3), rc_send_server(3), rc_setdebug(3), rc_test_config(3), rc_tls_fd(3)

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k bye bestie, go route something 💅✨

this page came from the radcli source, and the version stamp on it is 2023-01-29 — so if you're reading this later, that's the tea 🍓🧚💜