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Improve cast client module receiver messages handling

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hensm
2022-03-15 09:34:10 +00:00
parent 3030f75590
commit 3c175a740d
3 changed files with 72 additions and 57 deletions
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57
app/src/bridge/components/cast/client.ts
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@@ -2,6 +2,8 @@
import { Channel, Client } from "castv2";
import { ReceiverMessage, SenderMessage } from "./types";
export const NS_CONNECTION = "urn:x-cast:com.google.cast.tp.connection";
export const NS_HEARTBEAT = "urn:x-cast:com.google.cast.tp.heartbeat";
export const NS_RECEIVER = "urn:x-cast:com.google.cast.receiver";
@@ -11,6 +13,7 @@ const HEARTBEAT_INTERVAL_MS = 5000;
interface CastClientConnectOptions {
port?: number;
onReceiverMessage?: (message: ReceiverMessage) => void;
onHeartbeat?: () => void;
}
@@ -21,6 +24,10 @@ export default class CastClient {
protected heartbeatChannel?: Channel;
protected heartbeatIntervalId?: NodeJS.Timeout;
// Platform messaging
private receiverChannel?: Channel;
private receiverRequestId = 0;
constructor(
protected sourceId = "sender-0",
protected destinationId = "receiver-0"
@@ -43,6 +50,18 @@ export default class CastClient {
);
}
/**
* Sends a message on the receiver channel with the correct
* request ID.
*/
sendReceiverMessage(message: DistributiveOmit<SenderMessage, "requestId">) {
if (!this.receiverChannel) return;
const requestId = this.receiverRequestId++;
this.receiverChannel.send({ ...message, requestId });
return requestId;
}
/**
* Connects to a cast receiver at a given host, returning a
* promise that resolves once the client is connected.
@@ -57,25 +76,33 @@ export default class CastClient {
}
});
const connectOpts = {
host,
port: options?.port ?? DEFAULT_PORT
};
this.client.connect(
{
host,
port: options?.port ?? DEFAULT_PORT
},
// On connection callback
() => {
this.connectionChannel = this.createChannel(NS_CONNECTION);
this.heartbeatChannel = this.createChannel(NS_HEARTBEAT);
this.client.connect(connectOpts, () => {
this.connectionChannel = this.createChannel(NS_CONNECTION);
this.heartbeatChannel = this.createChannel(NS_HEARTBEAT);
// Handle receiver messages
this.receiverChannel = this.createChannel(NS_RECEIVER);
this.receiverChannel.on("message", message => {
options?.onReceiverMessage?.(message);
});
this.connectionChannel.send({ type: "CONNECT" });
this.heartbeatChannel.send({ type: "PING" });
this.connectionChannel.send({ type: "CONNECT" });
this.heartbeatChannel.send({ type: "PING" });
this.heartbeatIntervalId = setInterval(() => {
this.heartbeatChannel?.send({ type: "PING" });
options?.onHeartbeat?.();
}, HEARTBEAT_INTERVAL_MS);
this.heartbeatIntervalId = setInterval(() => {
this.heartbeatChannel?.send({ type: "PING" });
options?.onHeartbeat?.();
}, HEARTBEAT_INTERVAL_MS);
resolve();
});
resolve();
}
);
});
}