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janus_transport Struct Reference

The transport plugin session and callbacks interface. More...

`#include <transport.h>`

## Data Fields

int(*const | init )(janus_transport_callbacks *callback, const char *config_path)
| Transport plugin initialization/constructor.
void(*const | destroy )(void)
| Transport plugin deinitialization/destructor.
int(*const | get_api_compatibility )(void)
| Informative method to request the API version this transport plugin was compiled against.
int(*const | get_version )(void)
| Informative method to request the numeric version of the transport plugin.
const char *(*const | get_version_string )(void)
| Informative method to request the string version of the transport plugin.
const char *(*const | get_description )(void)
| Informative method to request a description of the transport plugin.
const char *(*const | get_name )(void)
| Informative method to request the name of the transport plugin.
const char *(*const | get_author )(void)
| Informative method to request the author of the transport plugin.
const char *(*const | get_package )(void)
| Informative method to request the package name of the transport plugin (what will be used in web applications to refer to it)
gboolean(*const | is_janus_api_enabled )(void)
| Informative method to check whether any Janus API support is currently enabled in this transport.
gboolean(*const | is_admin_api_enabled )(void)
| Informative method to check whether any Admin API support is currently enabled in this transport.
int(*const | send_message )(janus_transport_session *transport, void *request_id, gboolean admin, json_t *message)
| Method to send a message to a client over a transport session.
void(*const | session_created )(janus_transport_session *transport, guint64 session_id)
| Method to notify the transport plugin that a new session has been created from this transport.
void(*const | session_over )(janus_transport_session *transport, guint64 session_id, gboolean timeout, gboolean claimed)
| Method to notify the transport plugin that a session it originated timed out.
void(*const | session_claimed )(janus_transport_session *transport, guint64 session_id)
| Method to notify the transport plugin that a session it owned was claimed by another transport.
json_t *(*const | query_transport )(json_t *request)
| Method to send a management request to this specific transport plugin.

## Detailed Description

The transport plugin session and callbacks interface.

## Field Documentation

## destroy

void(*const janus_transport::destroy) (void)

Transport plugin deinitialization/destructor.

## get_api_compatibility

int(*const janus_transport::get_api_compatibility) (void)

Informative method to request the API version this transport plugin was compiled against.

Note
  All transport plugins MUST implement this method and return JANUS_TRANSPORT_API_VERSION to make this work, or they will be rejected by the core.

## get_author

const char *(*const janus_transport::get_author) (void)

Informative method to request the author of the transport plugin.

## get_description

const char *(*const janus_transport::get_description) (void)

Informative method to request a description of the transport plugin.

## get_name

const char *(*const janus_transport::get_name) (void)

Informative method to request the name of the transport plugin.

## get_package

const char *(*const janus_transport::get_package) (void)

Informative method to request the package name of the transport plugin (what will be used in web applications to refer to it)

## get_version

int(*const janus_transport::get_version) (void)

Informative method to request the numeric version of the transport plugin.

## get_version_string

const char *(*const janus_transport::get_version_string) (void)

Informative method to request the string version of the transport plugin.

## init

int(*const janus_transport::init) (janus_transport_callbacks *callback, const char *config_path)

Transport plugin initialization/constructor.

Parameters

  [in] | callback | The callback instance the transport plugin can use to contact the Janus core
  [in] | config_path | Path of the folder where the configuration for this transport plugin can be found

Returns
  0 in case of success, a negative integer in case of error

## is_admin_api_enabled

gboolean(*const janus_transport::is_admin_api_enabled) (void)

Informative method to check whether any Admin API support is currently enabled in this transport.

## is_janus_api_enabled

gboolean(*const janus_transport::is_janus_api_enabled) (void)

Informative method to check whether any Janus API support is currently enabled in this transport.

## query_transport

json_t *(*const janus_transport::query_transport) (json_t *request)

Method to send a management request to this specific transport plugin.

The method takes a Jansson json_t, that contains all the info related to the request. This object will come from an Admin API request, and is meant to represent a synchronous request. Since each transport plugin can have its own bells and whistles, there's no constraint on what this object should contain, which is entirely handler specific. A json_t object needs to be returned as a response, which will be sent in response to the Admin API call. This can be useful to tweak settings in real-time, or to probe the internals of the transport plugin for monitoring purposes.

Parameters

  [in] | request | Jansson object containing the request

Returns
  A Jansson object containing the response for the client

## send_message

int(*const janus_transport::send_message) (janus_transport_session *transport, void *request_id, gboolean admin, json_t *message)

Method to send a message to a client over a transport session.

Note
  It's the transport plugin's responsibility to free the message. Besides, a successful return does not necessarily mean the message has been actually sent, but only that it has been accepted by the transport plugim

Parameters

  [in] | transport | Pointer to the transport session instance
  [in] | request_id | Will be not-NULL in case this is a response to a previous request
  [in] | admin | Whether this is an admin API or a Janus API message
  [in] | message | The message data as a Jansson json_t object

Returns
  0 on success, a negative integer otherwise

## session_claimed

void(*const janus_transport::session_claimed) (janus_transport_session *transport, guint64 session_id)

Method to notify the transport plugin that a session it owned was claimed by another transport.

Note
  A transport plugin should close the connection as a result of such an event

Parameters

  [in] | transport | Pointer to the new transport session instance that has claimed the session
  [in] | session_id | The session ID that was claimed (if the transport cares)

## session_created

void(*const janus_transport::session_created) (janus_transport_session *transport, guint64 session_id)

Method to notify the transport plugin that a new session has been created from this transport.

Note
  A transport plugin may decide to close the connection as a result of such an event

Parameters

  [in] | transport | Pointer to the transport session instance
  [in] | session_id | The session ID that was created (if the transport cares)

## session_over

void(*const janus_transport::session_over) (janus_transport_session *transport, guint64 session_id, gboolean timeout, gboolean claimed)

Method to notify the transport plugin that a session it originated timed out.

Note
  A transport plugin may decide to close the connection as a result of such an event

Parameters

  [in] | transport | Pointer to the transport session instance
  [in] | session_id | The session ID that was closed (if the transport cares)
  [in] | timeout | Whether the cause for the session closure is a timeout (this may interest transport plugins more)
  [in] | claimed | Whether the cause for the session closure is due to someone claiming the session

The documentation for this struct was generated from the following file:

- transport.h