Function connectThroughProxy

freebuff/cli/release/http.js:41–88

(proxyUrl, targetHost, targetPort)

  }

  function connectThroughProxy(proxyUrl, targetHost, targetPort) {
    return new Promise((resolve, reject) => {
      const proxy = new URL(proxyUrl)
      const isHttpsProxy = proxy.protocol === 'https:'
      const connectOptions = {
        hostname: proxy.hostname,
        port: proxy.port || (isHttpsProxy ? 443 : 80),
        method: 'CONNECT',
        path: `${targetHost}:${targetPort}`,
        headers: {
          Host: `${targetHost}:${targetPort}`,
        },
      }

      if (proxy.username || proxy.password) {
        const auth = Buffer.from(
          `${decodeURIComponent(proxy.username || '')}:${decodeURIComponent(
            proxy.password || '',
          )}`,
        ).toString('base64')
        connectOptions.headers['Proxy-Authorization'] = `Basic ${auth}`
      }

      const transport = isHttpsProxy ? httpsModule : httpModule
      const req = transport.request(connectOptions)

      req.on('connect', (res, socket) => {
        if (res.statusCode === 200) {
          resolve(socket)
          return
        }

        socket.destroy()
        reject(new Error(`Proxy CONNECT failed with status ${res.statusCode}`))
      })

      req.on('error', (error) => {
        reject(new Error(`Proxy connection failed: ${error.message}`))
      })

      req.setTimeout(requestTimeout, () => {
        req.destroy()
        reject(new Error('Proxy connection timeout.'))
      })

      req.end()
    })
  }

  async function buildRequestOptions(url, options = {}) {
    const parsedUrl = new URL(url)