megaco_codec_transform(3erl) Erlang Module Definition megaco_codec_transform(3erl)NAME
megaco_codec_transform - Megaco message transformation utility.
DESCRIPTION
This module implements a simple megaco message transformation utility.
Note that this module is not included in the runtime part of the application.
EXPORTS
export_messages() -> void()
export_messages(MessagePackage) -> void()
Types MessagePackage = atom()
Export the messages in the MessagePackage (default is time_test ).
The output produced by this function is a directory structure with the following structure:
<message package>/pretty/<message-files>
compact/<message-files>
per/<message-files>
ber/<message-files>
erlang/<message-files>
Ericsson AB megaco 3.15.1 megaco_codec_transform(3erl)
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megaco_transport(3erl) Erlang Module Definition megaco_transport(3erl)NAME
megaco_transport - Megaco transport behaviour.
DESCRIPTION
The following functions should be exported from a megaco_transport callback module:
* send_message/2 [ mandatory ]
* send_message/3 [ optional ]
* resend_message/2 [ optional ]
*
EXPORTS
Module:send_message(Handle, Msg) -> ok | {cancel, Reason} | Error
Module:send_message(Handle, Msg, Resend) -> ok | {cancel, Reason} | Error
Types Handle = term()
Msg = binary() | iolist()
Resend = boolean()
Reason = term()
Error = term()
Send a megaco message.
If the function returns {cancel, Reason} , this means the transport module decided not to send the message. This is not an error. No
error messages will be issued and no error counters incremented. What actions this will result in depends on what kind of message
was sent.
In the case of requests, megaco will cancel the message in much the same way as if megaco:cancel had been called (after a success-
full send). The information will be propagated back to the user differently depending on how the request(s) where issued: For
requests issued using megaco:call , the info will be delivered in the return value. For requests issued using megaco:cast the info
will be delivered via a call to the callback function handle_trans_reply .
In the case of reply, megaco will cancel the reply and information of this will be returned to the user via a call to the callback
function handle_trans_ack .
The function send_message/3 will only be called if the resend_indication config option has been set to the value flag . The third
argument, Resend then indicates if the message send is a resend or not.
Module:resend_message(Handle, Msg) -> ok | {cancel, Reason} | Error
Types Handle = term()
Msg = binary() | iolist()
Reason = term()
Error = term()
Re-send a megaco message.
Note that this function will only be called if the user has set the resend_indication config option to true and it is in fact a mes-
sage resend. If not both of these condition's are meet, send_message will be called.
If the function returns {cancel, Reason} , this means the transport module decided not to send the message. This is not an error. No
error messages will be issued and no error counters incremented. What actions this will result in depends on what kind of message
was sent.
In the case of requests, megaco will cancel the message in much the same way as if megaco:cancel had been called (after a success-
full send). The information will be propagated back to the user differently depending on how the request(s) where issued: For
requests issued using megaco:call , the info will be delivered in the return value. For requests issued using megaco:cast the info
will be delivered via a call to the callback function handle_trans_reply .
In the case of reply, megaco will cancel the reply and information of this will be returned to the user via a call to the callback
function handle_trans_ack .
Ericsson AB megaco 3.15.1 megaco_transport(3erl)