plucky (3) ares_reinit.3.gz

NAME

       ares_reinit - ReInitialize a resolver channel from system configuration.

SYNOPSIS

       #include <ares.h>

       int ares_reinit(ares_channel_t *channel)

DESCRIPTION

       The ares_reinit(3) function re-reads the system configuration and safely applies the configuration to the
       existing channel.  System configuration will never override user-provided settings such as  provided  via
       ares_init_options(3) or ares_set_servers(3).

       Any  existing  queries  will  be  automatically  requeued if the server they are currently assigned to is
       removed from the system configuration.

       This function may cause additional file descriptors to be created, and existing ones to be  destroyed  if
       server configuration has changed.

       0d  safety,  will  spawn  a background thread to read the configuration and apply it.  It is crucial that
       developers use the ARES_OPT_SOCK_STATE_CB or ARES_OPT_EVENT_THREAD so that notifications of  changes  are
       alerted.  If using ares_getsock(3) or ares_fds(3), no notification is possible which could cause a stall.

RETURN VALUES

       ares_reinit(3) can return any of the following values:

       ARES_SUCCESS  Initialization succeeded.

       ARES_EFILE    A configuration file could not be read.

       ARES_ENOMEM   The process's available memory was exhausted.

AVAILABILITY

       This function was first introduced in c-ares version 1.22.0.

SEE ALSO

       ares_init(3),      ares_init_options(3),      ares_destroy(3),     ares_dup(3),     ares_library_init(3),
       ares_set_servers(3), ares_threadsafety(3)

                                                12 November 2023                                  ARES_REINIT(3)