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George Joseph 650c68e306 chan_websocket: Add capability for JSON control messages and events. ... With recent enhancements to chan_websocket, the original plain-text implementation of control messages and events is now too limiting. We probably should have used JSON initially but better late than never. Going forward, enhancements that require control message or event changes will only be done to the JSON variants and the plain-text variants are now deprecated but not yet removed. * Added the chan_websocket.conf config file that allows setting which control message format to use globally: "json" or "plain-text". "plain-text" is the default for now to preserve existing behavior. * Added a dialstring option `f(json|plain-text)` to allow the format to be overridden on a call-by-call basis. Again, 'plain-text' is the default for now to preserve existing behavior. The JSON for commands sent by the app to Asterisk must be... `{ "command": "<command>" ... }` where `<command>` is one of `ANSWER`, `HANGUP`, `START_MEDIA_BUFFERING`, etc. The `STOP_MEDIA_BUFFERING` command takes an additional, optional parameter to be returned in the corresponding `MEDIA_BUFFERING_COMPLETED` event: `{ "command": "STOP_MEDIA_BUFFERING", "correlation_id": "<correlation id>" }`. The JSON for events sent from Asterisk to the app will be... `{ "event": "<event>", "channel_id": "<channel_id>" ... }`. The `MEDIA_START` event will now look like... ``` { "event": "MEDIA_START", "connection_id": "media_connection1", "channel": "WebSocket/media_connection1/0x5140001a0040", "channel_id": "1761245643.1", "format": "ulaw", "optimal_frame_size": 160, "ptime": 20, "channel_variables": { "DIALEDPEERNUMBER": "media_connection1/c(ulaw)", "MEDIA_WEBSOCKET_CONNECTION_ID": "media_connection1", "MEDIA_WEBSOCKET_OPTIMAL_FRAME_SIZE": "160" } } ``` Note the addition of the channel variables which can't be supported with the plain-text formatting. The documentation will be updated with the exact formats for all commands and events. Resolves: #1546 Resolves: #1563 DeveloperNote: The chan_websocket plain-text control and event messages are now deprecated (but remain the default) in favor of JSON formatted messages. See https://docs.asterisk.org/Configuration/Channel-Drivers/WebSocket for more information. DeveloperNote: A "transport_data" parameter has been added to the channels/externalMedia ARI endpoint which, for websocket, allows the caller to specify parameters to be added to the dialstring for the channel. For instance, `"transport_data": "f(json)"`.		11 months ago
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ari_doc.xml	ARI Outbound Websockets	1 year ago
ari_model_validators.c	chan_pjsip: Add technology-specific off-nominal hangup cause to events.	11 months ago
ari_model_validators.h	chan_pjsip: Add technology-specific off-nominal hangup cause to events.	11 months ago
ari_websocket_requests.c	ARI: REST over Websocket	2 years ago
ari_websockets.c	ARI Outbound Websockets	1 year ago
ari_websockets.h	ARI Outbound Websockets	1 year ago
cli.c	ARI Outbound Websockets	1 year ago
config.c	res_ari: Ensure outbound websocket config has a websocket_client_id.	1 year ago
internal.h	ARI Outbound Websockets	1 year ago
resource_applications.c	res_ari_applications: Fix incorrect call to ao2_lock.	8 years ago
resource_applications.h	ARI event type filtering	8 years ago
resource_asterisk.c	Added ARI resource /ari/asterisk/ping	8 years ago
resource_asterisk.h	Added ARI resource /ari/asterisk/ping	8 years ago
resource_bridges.c	ARI: The bridges play and record APIs now handle sample rates > 8K correctly.	1 year ago
resource_bridges.h	ARI: The bridges play and record APIs now handle sample rates > 8K correctly.	1 year ago
resource_channels.c	chan_websocket: Add capability for JSON control messages and events.	11 months ago
resource_channels.h	chan_websocket: Add capability for JSON control messages and events.	11 months ago
resource_device_states.c	Add missing OPTIONAL_API and ARI dependences.	9 years ago
resource_device_states.h	ARI: Remove unnecessary \briefs from automatically generated documentation	12 years ago
resource_endpoints.c	core/ari/pjsip: Add refer mechanism	3 years ago
resource_endpoints.h	Prepare master for Asterisk 22	3 years ago
resource_events.c	ARI: REST over Websocket	2 years ago
resource_events.h	ARI: REST over Websocket	2 years ago
resource_mailboxes.c	Add missing OPTIONAL_API and ARI dependences.	9 years ago
resource_mailboxes.h	ARI: Remove unnecessary \briefs from automatically generated documentation	12 years ago
resource_playbacks.c	Add missing OPTIONAL_API and ARI dependences.	9 years ago
resource_playbacks.h	ARI: Remove unnecessary \briefs from automatically generated documentation	12 years ago
resource_recordings.c	Add missing OPTIONAL_API and ARI dependences.	9 years ago
resource_recordings.h	ARI: Add the ability to download the media associated with a stored recording	11 years ago
resource_sounds.c	media_index.c: Refactored so it doesn't cache the index	8 years ago
resource_sounds.h	ARI: Remove unnecessary \briefs from automatically generated documentation	12 years ago