Created
June 28, 2022 18:02
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serverProxy
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const net = require("net"); | |
const server = net.createServer(); | |
server.on("connection", (clientToProxySocket) => { | |
console.log("Client connected to proxy"); | |
clientToProxySocket.once("data", (data) => { | |
let isTLSConnection = data.toString().indexOf("CONNECT") !== -1; | |
let serverPort = 80; | |
let serverAddress; | |
console.log(data.toString()); | |
if (isTLSConnection) { | |
serverPort = 443; | |
serverAddress = data | |
.toString() | |
.split("CONNECT")[1] | |
.split(" ")[1] | |
.split(":")[0]; | |
} else { | |
serverAddress = data.toString().split("Host: ")[1].split("\r\n")[0]; | |
} | |
console.log(serverAddress); | |
// Creating a connection from proxy to destination server | |
let proxyToServerSocket = net.createConnection( | |
{ | |
host: serverAddress, | |
port: serverPort, | |
}, | |
() => { | |
console.log("Proxy to server set up"); | |
} | |
); | |
if (isTLSConnection) { | |
clientToProxySocket.write("HTTP/1.1 200 OK\r\n\r\n"); | |
} else { | |
proxyToServerSocket.write(data); | |
} | |
clientToProxySocket.pipe(proxyToServerSocket); | |
proxyToServerSocket.pipe(clientToProxySocket); | |
proxyToServerSocket.on("error", (err) => { | |
console.log("Proxy to server error"); | |
console.log(err); | |
}); | |
clientToProxySocket.on("error", (err) => { | |
console.log("Client to proxy error"); | |
console.log(err) | |
}); | |
}); | |
}); | |
server.on("error", (err) => { | |
console.log("Some internal server error occurred"); | |
console.log(err); | |
}); | |
server.on("close", () => { | |
console.log("Client disconnected"); | |
}); | |
server.listen( | |
{ | |
host: "0.0.0.0", | |
port: 8080, | |
}, | |
() => { | |
console.log("Server listening on 0.0.0.0:8080"); | |
} | |
); |
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