ARES_SET_SOCKET_CONFIGURE_CALLBACK(3)         FreeBSD Library Functions Manual

NAME
       ares_set_socket_configure_callback - Set a socket configuration
       callback

SYNOPSIS
       #include <ares.h>

       typedef int (*ares_sock_config_callback)(ares_socket_t socket_fd,
                                                int type,
                                                void *userdata)

       void ares_set_socket_configure_callback(ares_channel channel,
                                    ares_sock_config_callback callback,
                                    void *userdata)

       cc file.c -lcares

DESCRIPTION
       This function sets a callback in the given ares channel handle. This
       callback function will be invoked after the socket has been created,
       but before it has been connected to the remote server, which is an
       ideal time to configure various socket options.  The callback must
       return ARES_SUCCESS if things are fine, or return -1 to signal an
       error. A returned error will abort the ares operation.

SEE ALSO
       ares_init_options(3)ares_set_socket_callback&section=3">,ares_set_socket_callback(3)

AVAILABILITY
       ares_set_socket_configure_callback(3) was added in c-ares 1.11.0

AUTHOR
       Andrew Ayer

                                  6 Feb 2016
                                         ARES_SET_SOCKET_CONFIGURE_CALLBACK(3)