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Enhanced WebSocket Protocol Handling in Proxy Server Connections #304

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merged 1 commit into from
Mar 1, 2024
+14 −6
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Enhanced WebSocket Protocol Handling in Proxy Server Connections #304

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20 changes: 14 additions & 6 deletions lib/proxy.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -868,21 +868,29 @@ export class Proxy implements IProxy {
} else {
url = upgradeReq.url;
}
const ptosHeaders = {};
const ctopHeaders = upgradeReq.headers;
for (const key in ctopHeaders) {
if (key.indexOf("sec-websocket") !== 0) {
ptosHeaders[key] = ctopHeaders[key];
const proxyToServerHeaders= {};
const clientToProxyHeaders = upgradeReq.headers;
for (const header in clientToProxyHeaders) {
if (header.indexOf("sec-websocket") !== 0) {
proxyToServerHeaders[header] = clientToProxyHeaders[header];
}
}

let protocols: string[] = [];
if(clientToProxyHeaders["sec-websocket-protocol"]) {
protocols = clientToProxyHeaders["sec-websocket-protocol"].split(",").map((p) => p.trim());
}

ctx.proxyToServerWebSocketOptions = {
url,
protocols: protocols.length > 0 ? protocols : undefined,
agent: ctx.isSSL ? self.httpsAgent : self.httpAgent,
headers: ptosHeaders,
headers: proxyToServerHeaders,
};
function makeProxyToServerWebSocket() {
ctx.proxyToServerWebSocket = new WebSocket(
ctx.proxyToServerWebSocketOptions!.url!,
ctx.proxyToServerWebSocketOptions.protocols,
ctx.proxyToServerWebSocketOptions
);
ctx.proxyToServerWebSocket.on(
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