setting proxy in npm
npm config set proxy http://username:password@host:port
npm config set https-proxy http://username:password@host:portsetting proxy in npm
npm config set proxy http://username:password@host:port
npm config set https-proxy http://username:password@host:porthttp_proxy
const http = require('http')
const port = process.env.PORT || 9191
const net = require('net')
const url = require('url')
const requestHandler = (req, res) => { // discard all request to proxy server except HTTP/1.1 CONNECT method
res.writeHead(405, {'Content-Type': 'text/plain'})
res.end('Method not allowed')
}
const server = http.createServer(requestHandler)
const listener = server.listen(port, (err) => {
if (err) {
return console.error(err)
}
const info = listener.address()
console.log(`Server is listening on address ${info.address} port ${info.port}`)
})
server.on('connect', (req, clientSocket, head) => { // listen only for HTTP/1.1 CONNECT method
console.log(clientSocket.remoteAddress, clientSocket.remotePort, req.method, req.url)
if (!req.headers['proxy-authorization']) { // here you can add check for any username/password, I just check that this header must exist!
clientSocket.write([
'HTTP/1.1 407 Proxy Authentication Required',
'Proxy-Authenticate: Basic realm="proxy"',
'Proxy-Connection: close',
].join('\r\n'))
clientSocket.end('\r\n\r\n') // empty body
return
}
const {port, hostname} = url.parse(`//${req.url}`, false, true) // extract destination host and port from CONNECT request
if (hostname && port) {
const serverErrorHandler = (err) => {
console.error(err.message)
if (clientSocket) {
clientSocket.end(`HTTP/1.1 500 ${err.message}\r\n`)
}
}
const serverEndHandler = () => {
if (clientSocket) {
clientSocket.end(`HTTP/1.1 500 External Server End\r\n`)
}
}
const serverSocket = net.connect(port, hostname) // connect to destination host and port
const clientErrorHandler = (err) => {
console.error(err.message)
if (serverSocket) {
serverSocket.end()
}
}
const clientEndHandler = () => {
if (serverSocket) {
serverSocket.end()
}
}
clientSocket.on('error', clientErrorHandler)
clientSocket.on('end', clientEndHandler)
serverSocket.on('error', serverErrorHandler)
serverSocket.on('end', serverEndHandler)
serverSocket.on('connect', () => {
clientSocket.write([
'HTTP/1.1 200 Connection Established',
'Proxy-agent: Node-VPN',
].join('\r\n'))
clientSocket.write('\r\n\r\n') // empty body
// "blindly" (for performance) pipe client socket and destination socket between each other
serverSocket.pipe(clientSocket, {end: false})
clientSocket.pipe(serverSocket, {end: false})
})
} else {
clientSocket.end('HTTP/1.1 400 Bad Request\r\n')
clientSocket.destroy()
}
})Copyright © 2021 Codeinu
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