broadcast

Desktop Agent bridging message exchange for a broadcast() API call on the DesktopAgent or a Channel. Generated by API calls:

• fdc3.broadcast(context: Context): Promise<void>
• Channel.broadcast(context: Context): Promise<void>

caution

Broadcasts on a PrivateChannel have a separate message exchange, see PrivateChannel.broadcast.

Message Exchange Type: Request only

E.g.

fdc3.broadcast(contextObj);

or

(await fdc3.getOrCreateChannel("myChannel")).broadcast(contextObj)

Message exchange

Request format

Request message schemas

• https://fdc3.finos.org/schemas/next/bridging/broadcastAgentRequest.schema.json
• https://fdc3.finos.org/schemas/next/bridging/broadcastBridgeRequest.schema.json

Example

Outward message to the DAB:

// agent-A -> DAB
{
    "type": "broadcastRequest",
    "payload": {
        "channelId": "myChannel",
        "context": { /*contextObj*/ }
    },
    "meta": {
        "requestUuid": "<requestUuid>",
        "timestamp": "2022-03-...",
        "source": {
            "appId": "agentA-app1",
            "instanceId": "c6ad5174-6f78-4582-8e96-728d93a4d7d7"
        }
    }
}

which it repeats on to agent-B AND agent-C with the source.desktopAgent metadata added.

// DAB -> agent-B
// DAB -> agent-C
{
    "type": "broadcastRequest",
    "payload": {
        "channelId": "myChannel",
        "context": { /*contextObj*/}
    },
    "meta": {
        "requestUuid": "<requestUuid>",
        "timestamp": "2020-03-...",
        "source": {
            "appId": "agentA-app1",
            "instanceId": "c6ad5174-6f78-4582-8e96-728d93a4d7d7",
            "desktopAgent": "agent-A" //added by DAB
        }
    }
}