matrix-spec/data/event-schemas/schema/m.call.answer.yaml

{
    "type": "object",
    "description": "This event is sent by the callee when they wish to answer the call.",
    "allOf": [{
        "$ref": "core-event-schema/room_event.yaml"
    }],
    "properties": {
        "content": {
            "type": "object",
            "allOf": [{
                "$ref": "core-event-schema/call_event.yaml"
            }],
            "properties": {
                "answer": {
                    "type": "object",
                    "title": "Answer",
                    "description": "The session description object",
                    "properties": {
                        "type": {
                            "type": "string",
                            "enum": ["answer"],
                            "description": "The type of session description."
                        },
                        "sdp": {
                            "type": "string",
                            "description": "The SDP text of the session description."
                        }
                    },
                    "required": ["type", "sdp"]
                },
                "sdp_stream_metadata": {
                    "type": "object",
                    "title": "SDP Stream Metadata",
                    "x-addedInMatrixVersion": "1.7",
                    "description": "Object describing the streams that will be sent",
                    "additionalProperties": {
                        "type": "object",
                        "title": "Stream Metadata Block",
                        "properties": {
                            "purpose": {
                              "type": "string",
                              "enum": ["m.usermedia", "m.screenshare"]
                            }
                        },
                        "required": ["purpose"]
                    }
                }
            },
            "required": ["answer"]
        },
        "type": {
            "type": "string",
            "enum": ["m.call.answer"]
        }
    }
}