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megaco_tcp(3)		   Erlang Module Definition		 megaco_tcp(3)

NAME
       megaco_tcp   -	Interface   module  to	TPKT  transport	 protocol  for
       Megaco/H.248.

DESCRIPTION
       This module contains the	public interface to the	TPKT (TCP/IP)  version
       transport protocol for Megaco/H.248.

EXPORTS
       start_transport() -> {ok, TransportRef}

	      Types:

		 TransportRef =	pid()

	      This function is used for	starting the TCP/IP transport service.
	      Use exit(TransportRef, Reason) to	stop the transport service.

       listen(TransportRef, ListenPortSpecList)	-> ok

	      Types:

		 TransportRef =	pid() |	regname()
		 OptionListPerPort = [Option]
		 Option	= {port, integer()} |{options, list()}	|{receive_han-
		 dle, term()}

	      This function is used for	starting new TPKT listening socket for
	      TCP/IP. The option list contains the socket definitions.

       connect(TransportRef, OptionList) -> {ok, Handle, ControlPid} | {error,
       Reason}

	      Types:

		 TransportRef =	pid() |	regname()
		 OptionList = [Option]
		 Option	 =  {host,  Ipaddr}  |	{port,	integer()}  |{options,
		 list()} |{receive_handle, term()} |{module, atom()}
		 Handle	= socket_handle()
		 ControlPid = pid()
		 Reason	= term()

	      This function is used to open a TPKT connection.

	      The module option	makes it possible  for	the  user  to  provide
	      their  own callback module. The receive_message/4	or process_re-
	      ceived_message/4 functions of this module	is called when	a  new
	      message  is  received (which one depends on the size of the mes-
	      sage; small -  receive_message,  large  -	 process_received_mes-
	      sage). Default value is megaco.

       close(Handle) ->	ok

	      Types:

		 Handle	= socket_handle()

	      This function is used for	closing	an active TPKT connection.

       socket(Handle) -> Socket

	      Types:

		 Handle	= socket_handle()
		 Socket	= inet_socket()

	      This  function  is  used	to  convert  a	socket_handle()	 to  a
	      inet_socket(). inet_socket() is a	plain  socket,	see  the  inet
	      module for more info.

       send_message(Handle, Message) ->	ok

	      Types:

		 Handle	= socket_handle()
		 Message = binary() | iolist()

	      Sends a message on a connection.

       block(Handle) ->	ok

	      Types:

		 Handle	= socket_handle()

	      Stop receiving incoming messages on the socket.

       unblock(Handle) -> ok

	      Types:

		 Handle	= socket_handle()

	      Starting to receive incoming messages from the socket again.

       upgrade_receive_handle(ControlPid) -> ok

	      Types:

		 ControlPid = pid()

	      Update  the  receive  handle  of the control process (e.g. after
	      having changed protocol version).

       get_stats() -> {ok, TotalStats} | {error, Reason}
       get_stats(SendHandle) ->	{ok, SendHandleStats} |	{error,	Reason}
       get_stats(SendHandle, Counter) -> {ok, CounterStats} | {error, Reason}

	      Types:

		 TotalStats = [send_handle_stats()]
		 total_stats() = {send_handle(), [stats()]}
		 SendHandle = send_handle()
		 SendHandleStats = [stats()]
		 Counter = tcp_stats_counter()
		 CounterStats =	integer()
		 stats() = {tcp_stats_counter(), integer()}
		 tcp_stats_counter()  =	 medGwyGatewayNumInMessages  |	 medG-
		 wyGatewayNumInOctets  |  medGwyGatewayNumOutMessages  | medG-
		 wyGatewayNumOutOctets | medGwyGatewayNumErrors
		 Reason	= term()

	      Retreive the TCP related (SNMP) statistics counters.

       reset_stats() ->	void()
       reset_stats(SendHandle) -> void()

	      Types:

		 SendHandle = send_handle()

	      Reset all	TCP related (SNMP) statistics counters.

Ericsson AB			 megaco	3.18.4			 megaco_tcp(3)

NAME | DESCRIPTION | EXPORTS

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