NAME

       knet_host_enable_status_change_notify  -  Install  a  callback  to  get host status change
       events.

SYNOPSIS

       #include <libknet.h>

       int knet_host_enable_status_change_notify(
           knet_handle_t  knet_h,
           void          *host_status_change_notify_fn_private_data,
           void(*)(void *private_data, knet_node_id_t host_id, uint8_t reachable, uint8_t remote, uint8_t external)  host_status_change_notify_fn
       );

DESCRIPTION

       knet_host_enable_status_change_notify

       knet_h - pointer to knet_handle_t

       host_status_change_notify_fn_private_data - void pointer to  data  that  can  be  used  to
       identify the callback

       host_status_change_notify_fn  - is a callback function that is invoked every time there is
       a change in the host status.  host  status  is  identified  by:reachable,  this  host  can
       send/receive data to/from host_id

       remote,  0  if  the  host_id  is  connected  locally or 1 if the there is one or more knet
       host(s) in between. NOTE: re-switching is NOT currently implemented, but this is ready for
       future and can avoid an API/ABI breakage later on.

       external,  0  if  the  host_id is configured locally or 1 if it has been added from remote
       nodes config. NOTE: dynamic topology is NOT currently implemented, but this is  ready  for
       future  and  can avoid an API/ABI breakage later on. This function MUST NEVER block or add
       substantial delays.

RETURN VALUE

       knet_host_status_change_notify returns 0 on success -1 on error and errno is set.

SEE ALSO

       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_strtoaddr(3), knet_link_rm_acl(3), knet_send(3), knet_handle_enable_pmtud_notify(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_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_host_list(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_link_insert_acl(3)

COPYRIGHT

       Copyright (C) 2010-2022 Red Hat, Inc. All rights reserved.