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_handle,  term()}  |  {inet_backend,
                 default | inet | socket}

              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()} | {inet_backend, default | inet | socket}
                 Handle = socket_handle()
                 ControlPid = pid()
                 Reason = term()

              This function is used to open a TPKT connection.

                module:
                  This  option  makes  it  possible  for  the  user  to  provide  their own callback module. The
                  receive_message/4 or process_received_message/4 functions of this module is called when a  new
                  message is received. Which one is called depends on the size of the message;

                  small:
                    receive_message

                  large:
                    process_received_message

                  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     |     medGwyGatewayNumInOctets     |
                 medGwyGatewayNumOutMessages | medGwyGatewayNumOutOctets | 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 4.4.3                                  megaco_tcp(3erl)