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close proxied websockets when upstream sends a regular response #598

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close proxied websockets when upstream sends a regular response #598

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18 changes: 18 additions & 0 deletions lib/configproxy.js
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Original file line number Diff line number Diff line change
Expand Up @@ -176,6 +176,24 @@ export class ConfigurableProxy extends EventEmitter {
}
options.ws = true;
this.proxy = httpProxy.createProxyServer(options);
this.proxy.on("proxyReqWs", (proxyReq, req, socket, options, head) => {
proxyReq.on("response", (res) => {
that.log.info(
"Client requested websocket at %s, proxy target %s responded with HTTP %s %s",
req.url,
proxyReq.host,
res.statusCode,
res.statusMessage
);
if (!socket.destroyed) {
socket.write(
`HTTP/1.1 ${res.statusCode} Upstream not a websocket\r\nConnection: close\r\n\r\n`
);
socket.end();
}
res.resume();
});
});

// tornado-style regex routing,
// because cross-language cargo-culting is always a good idea
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