void (*SilcClientConnectCallback)(SilcClient client,
                                      SilcClientConnection conn,
                                      SilcClientConnectionStatus status,
                                      SilcStatus error,
                                      const char *message,
                                      void *context);

    Connect callbak given as argument to silc_client_connect_to_server,
    silc_client_connect_to_client and silc_client_key_exchange functions.
    It is called to indicate the status of the connection, indicated
    by the `status'.  It is called after the connection has been
    established to the remote host and when connection is disconnected
    by the remote host.  The `context' is the context given as argument
    to the connecting function.  If the `status' is an error the `error'
    may indicate more detailed error.  If `error' is SILC_STATUS_OK no
    detailed error message is available.

    When the `status' is SILC_CLIENT_CONN_DISCONNECTED the `error' will
    indicate the reason for disconnection.  If the `message' is non-NULL
    it delivers error or disconnection message.

    The `conn' is the connection to the remote host.  In case error
    occurred the `conn' may be NULL, however, in some cases a valid `conn'
    is returned even in error.  If `conn' is non-NULL the receiver is
    responsible of closing the connection with silc_client_close_connection
    function, except when SILC_CLINET_CONN_DISCONNECTED or some error
    was received.  In these cases the library will close the connection.