mirror of https://git.tuxpa.in/a/code-server.git
Support permessage-deflate web socket extension (#2846)
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@ -120,7 +120,7 @@ export class Vscode {
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};
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}
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public async handleWebSocket(socket: net.Socket, query: Query, _permessageDeflate: boolean): Promise<true> {
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public async handleWebSocket(socket: net.Socket, query: Query, permessageDeflate: boolean): Promise<true> {
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if (!query.reconnectionToken) {
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throw new Error('Reconnection token is missing from query parameters');
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}
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@ -128,7 +128,8 @@ export class Vscode {
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reconnectionToken: <string>query.reconnectionToken,
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reconnection: query.reconnection === 'true',
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skipWebSocketFrames: query.skipWebSocketFrames === 'true',
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// TODO: permessageDeflate,
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permessageDeflate,
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recordInflateBytes: permessageDeflate,
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});
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try {
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await this.connect(await protocol.handshake(), protocol);
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@ -199,16 +199,20 @@ wsRouter.ws("/", ensureAuthenticated, async (req) => {
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.createHash("sha1")
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.update(req.headers["sec-websocket-key"] + magic)
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.digest("base64")
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req.ws.write(
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[
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"HTTP/1.1 101 Switching Protocols",
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"Upgrade: websocket",
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"Connection: Upgrade",
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`Sec-WebSocket-Accept: ${reply}`,
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].join("\r\n") + "\r\n\r\n",
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)
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// TODO: Parse this header properly. Currently unused so haven't bothered.
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const responseHeaders = [
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"HTTP/1.1 101 Switching Protocols",
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"Upgrade: websocket",
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"Connection: Upgrade",
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`Sec-WebSocket-Accept: ${reply}`,
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]
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// TODO: Parse this header properly.
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const extensions = req.headers["sec-websocket-extensions"]
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const permessageDeflate = extensions ? extensions.includes("permessage-deflate") : false
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responseHeaders.push("Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15")
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req.ws.write(responseHeaders.join("\r\n") + "\r\n\r\n")
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await vscode.sendWebsocket(req.ws, req.query, permessageDeflate)
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})
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