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Move Websock event handlers to own methods 

Avoid cluttering up the RFB constructor.
This commit is contained in:
Pierre Ossman 2021-04-18 11:39:03 +02:00
parent 42100e8233
commit 2244f53774
1 changed files with 56 additions and 50 deletions
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106
core/rfb.js
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@ -234,56 +234,10 @@ export default class RFB extends EventTargetMixin {
this._gestures = new GestureHandler();
this._sock = new Websock();
this._sock.on('message', () => {
this._handleMessage();
});
this._sock.on('open', () => {
if ((this._rfbConnectionState === 'connecting') &&
(this._rfbInitState === '')) {
this._rfbInitState = 'ProtocolVersion';
Log.Debug("Starting VNC handshake");
} else {
this._fail("Unexpected server connection while " +
this._rfbConnectionState);
}
});
this._sock.on('close', (e) => {
Log.Debug("WebSocket on-close event");
let msg = "";
if (e.code) {
msg = "(code: " + e.code;
if (e.reason) {
msg += ", reason: " + e.reason;
}
msg += ")";
}
switch (this._rfbConnectionState) {
case 'connecting':
this._fail("Connection closed " + msg);
break;
case 'connected':
// Handle disconnects that were initiated server-side
this._updateConnectionState('disconnecting');
this._updateConnectionState('disconnected');
break;
case 'disconnecting':
// Normal disconnection path
this._updateConnectionState('disconnected');
break;
case 'disconnected':
this._fail("Unexpected server disconnect " +
"when already disconnected " + msg);
break;
default:
this._fail("Unexpected server disconnect before connecting " +
msg);
break;
}
this._sock.off('close');
// Delete reference to raw channel to allow cleanup.
this._rawChannel = null;
});
this._sock.on('error', e => Log.Warn("WebSocket on-error event"));
this._sock.on('open', this._socketOpen.bind(this));
this._sock.on('close', this._socketClose.bind(this));
this._sock.on('message', this._handleMessage.bind(this));
this._sock.on('error', this._socketError.bind(this));
// Slight delay of the actual connection so that the caller has
// time to set up callbacks
@ -598,6 +552,58 @@ export default class RFB extends EventTargetMixin {
Log.Debug("<< RFB.disconnect");
}
_socketOpen() {
if ((this._rfbConnectionState === 'connecting') &&
(this._rfbInitState === '')) {
this._rfbInitState = 'ProtocolVersion';
Log.Debug("Starting VNC handshake");
} else {
this._fail("Unexpected server connection while " +
this._rfbConnectionState);
}
}
_socketClose(e) {
Log.Debug("WebSocket on-close event");
let msg = "";
if (e.code) {
msg = "(code: " + e.code;
if (e.reason) {
msg += ", reason: " + e.reason;
}
msg += ")";
}
switch (this._rfbConnectionState) {
case 'connecting':
this._fail("Connection closed " + msg);
break;
case 'connected':
// Handle disconnects that were initiated server-side
this._updateConnectionState('disconnecting');
this._updateConnectionState('disconnected');
break;
case 'disconnecting':
// Normal disconnection path
this._updateConnectionState('disconnected');
break;
case 'disconnected':
this._fail("Unexpected server disconnect " +
"when already disconnected " + msg);
break;
default:
this._fail("Unexpected server disconnect before connecting " +
msg);
break;
}
this._sock.off('close');
// Delete reference to raw channel to allow cleanup.
this._rawChannel = null;
}
_socketError(e) {
Log.Warn("WebSocket on-error event");
}
_focusCanvas(event) {
if (!this.focusOnClick) {
return;