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"use strict";
const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
/**
* Defers one or more callbacks until the next turn of the event loop. Multiple
* callbacks are executed in order.
*
* @param {Function[]} callbacks The callbacks to execute. One callback will be
* executed per tick.
*/
function waterfall(...callbacks) {
callbacks.reduce((promise, callback) => promise.then(() => {
callback();
}), Promise.resolve()).catch(Cu.reportError);
}
/**
* Minimal implementation of a mock WebSocket connect to be used with
* PushService. Forwards and receive messages from the implementation
* that lives in the content process.
*/
function MockWebSocketParent(originalURI) {
this._originalURI = originalURI;
}
MockWebSocketParent.prototype = {
_originalURI: null,
_listener: null,
_context: null,
QueryInterface: XPCOMUtils.generateQI([
Ci.nsISupports,
Ci.nsIWebSocketChannel
]),
get originalURI() {
return this._originalURI;
},
asyncOpen(uri, origin, windowId, listener, context) {
this._listener = listener;
this._context = context;
waterfall(() => this._listener.onStart(this._context));
},
sendMsg(msg) {
sendAsyncMessage("socket-client-msg", msg);
},
close() {
waterfall(() => this._listener.onStop(this._context, Cr.NS_OK));
},
serverSendMsg(msg) {
waterfall(() => this._listener.onMessageAvailable(this._context, msg),
() => this._listener.onAcknowledge(this._context, 0));
},
};
var pushService = Cc["@mozilla.org/push/Service;1"].
getService(Ci.nsIPushService).
wrappedJSObject;
var mockSocket;
var serverMsgs = [];
addMessageListener("socket-setup", function () {
pushService.replaceServiceBackend({
serverURI: "wss://push.example.org/",
makeWebSocket(uri) {
mockSocket = new MockWebSocketParent(uri);
while (serverMsgs.length > 0) {
let msg = serverMsgs.shift();
mockSocket.serverSendMsg(msg);
}
return mockSocket;
}
});
});
addMessageListener("socket-teardown", function (msg) {
pushService.restoreServiceBackend().then(_ => {
serverMsgs.length = 0;
if (mockSocket) {
mockSocket.close();
mockSocket = null;
}
sendAsyncMessage("socket-server-teardown");
}).catch(error => {
Cu.reportError(`Error restoring service backend: ${error}`);
})
});
addMessageListener("socket-server-msg", function (msg) {
if (mockSocket) {
mockSocket.serverSendMsg(msg);
} else {
serverMsgs.push(msg);
}
});
var MockService = {
requestID: 1,
resolvers: new Map(),
sendRequest(name, params) {
return new Promise((resolve, reject) => {
let id = this.requestID++;
this.resolvers.set(id, { resolve, reject });
sendAsyncMessage("service-request", {
name: name,
id: id,
params: params,
});
});
},
handleResponse(response) {
if (!this.resolvers.has(response.id)) {
Cu.reportError(`Unexpected response for request ${response.id}`);
return;
}
let resolver = this.resolvers.get(response.id);
this.resolvers.delete(response.id);
if (response.error) {
resolver.reject(response.error);
} else {
resolver.resolve(response.result);
}
},
init() {},
register(pageRecord) {
return this.sendRequest("register", pageRecord);
},
registration(pageRecord) {
return this.sendRequest("registration", pageRecord);
},
unregister(pageRecord) {
return this.sendRequest("unregister", pageRecord);
},
reportDeliveryError(messageId, reason) {
sendAsyncMessage("service-delivery-error", {
messageId: messageId,
reason: reason,
});
},
};
addMessageListener("service-replace", function () {
pushService.service = MockService;
});
addMessageListener("service-restore", function () {
pushService.service = null;
});
addMessageListener("service-response", function (response) {
MockService.handleResponse(response);
});
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