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Lubos Chlebicki's questions

Martin Hope
Lubos Chlebicki
Asked: 2023-05-22 15:23:23 +0800 CST
  • 5

我正在使用 Node.js 在 render.com 上创建一个非常简单的 HTTPS 服务器，它升级到 WebSocket 通信。这是代码：

    const https = require('https');
    
    // Create an HTTP server
    const server = https.createServer((req, res) => {
      res.writeHead(200, { 'Content-Type': 'text/plain' });
      res.end('okay');
    });
    server.on('upgrade', (req, socket, head) => {
      socket.write('HTTP/1.1 101 Web Socket Protocol Handshake\r\n' +
                   'Upgrade: WebSocket\r\n' +
                   'Connection: Upgrade\r\n' +
                   '\r\n');
    
      socket.pipe(socket); // echo back
    });
    
    // Now that server is running
    server.listen(443, 'test-srv-676.onrender.com', () => {
    
      // make a request
      const options = {
        port: 443,
        Host: 'test-srv-676.onrender.com',
        headers: {
          'Connection': 'Upgrade',
          'Upgrade': 'websocket',
        },
      };

  const req = http.request(options);
  req.end();

  req.on('upgrade', (res, socket, upgradeHead) => {
    console.log('got upgraded!');
    socket.end();
  });
});

立即，我收到一个错误：服务器尝试侦听从域“test-srv-676.onrender.com”生成的 IP，但它“不可用”。我的 HTTPS 服务器设置可能有问题，但我不知道。抛出的错误是：

Starting service with 'node server.js'
May 22 09:03:18 AM  events.js:353
May 22 09:03:18 AM        throw er; // Unhandled 'error' event
May 22 09:03:18 AM        ^
May 22 09:03:18 AM  
May 22 09:03:18 AM  Error: listen EADDRNOTAVAIL: address not available 216.24.57.3:443
May 22 09:03:18 AM      at Server.setupListenHandle [as _listen2] (net.js:1301:21)
May 22 09:03:18 AM      at listenInCluster (net.js:1366:12)
May 22 09:03:18 AM      at doListen (net.js:1503:7)
May 22 09:03:18 AM      at processTicksAndRejections (internal/process/task_queues.js:83:21)
May 22 09:03:18 AM  Emitted 'error' event on Server instance at:
May 22 09:03:18 AM      at emitErrorNT (net.js:1345:8)
May 22 09:03:18 AM      at processTicksAndRejections (internal/process/task_queues.js:82:21) {
May 22 09:03:18 AM    code: 'EADDRNOTAVAIL',
May 22 09:03:18 AM    errno: -99,
May 22 09:03:18 AM    syscall: 'listen',
May 22 09:03:18 AM    address: '216.24.57.3',
May 22 09:03:18 AM    port: 443
May 22 09:03:18 AM  }
ip