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Function silc_socket_host_lookup SYNOPSIS
        void silc_socket_host_lookup(SilcSocketConnection sock,
                                     bool port_lookup,
                                     SilcSocketHostLookupCb callback,
                                     void *context,
                                     SilcSchedule schedule);
DESCRIPTION
        Performs asynchronous host name and IP address lookups for the
        specified socket connection. This may be called when the socket
        connection is created and the full IP address and fully qualified
        domain name information is desired. The `callback' with `context'
        will be called after the lookup is performed. The `schedule'
        is the application's scheduler which the lookup routine needs.
        If the socket connection is freed during the lookup the library
        will automatically cancel the lookup and the `callback' will not be
        called.

        If `port_lookup' is TRUE then the remote port of the socket
        connection is resolved. After the information is resolved they
        are accessible using sock->ip and sock->hostname pointers. Note
        that if the both IP and FQDN could not be resolved the sock->hostname
        includes the IP address of the remote host. The resolved port is
        available in sock->port.
>> SilcSocketConnectionAPI >> SilcSocketConnection >> SilcSocketConnectionHB >> SilcSocketType >> SilcSocketConnectionStruct >> silc_socket_alloc >> silc_socket_free >> silc_socket_dup >> silc_socket_read >> silc_socket_write >> SilcSocketConnectionHBCb >> silc_socket_set_heartbeat >> SilcSocketHostLookupCb >> silc_socket_host_lookup