Node.js server.address() 方法

server.address()是 tls 模块中 Socket 类的内置应用程序编程接口，用于获取服务器的绑定地址。

句法：

const server.address()

参数：此方法不接受任何参数。

返回值：该方法返回绑定的地址，包含服务器的姓氏和端口。

如何生成私钥和公共证书？

1. 私钥：打开记事本并复制粘贴以下密钥：

   -----BEGIN RSA PRIVATE KEY-----
   MIICXQIBAAKBgQC38R9wXcUbhOd44FavgmE5R3K4JeYOHLnI7dUq1B8/Gv7l3SOg
   JKef/m9gM1KvUx951mapXGtcWgwB08J3vUE2YOZ4tWJArrVZES0BI/RmFAyhQFP5
   HcWl3LSM9LRihP98F33oIkKaCxA5LxOrkgpV4HrUzIKTABDYah7RPex1WQIDAQAB
   AoGBAIXR71xxa9gUfc5L7+TqBs+EMmrUb6Vusp8CoGXzQvRHMJCMrMFySV0131Nu
   o0YYRDsAh1nJefYLMNcXd1BjqI+qY8IeRsxaY+9CB2KKGVVDO2uLdurdC2ZdlWXT
   Vwr3dDoyR0trnXJMmH2ijTeO6bush8HuXxvxJBjvEllM5QYxAkEA3jwny9JP+RFu
   0rkqPBe/wi5pXpPl7PUtdNAGrh6S5958wUoR4f9bvwmTBv1nQzExKWu4EIp+7vjJ
   fBeRZhnBvQJBANPjjge8418PS9zAFyKlITq6cxmM4gOWeveQZwXVNvav0NH+OKdQ
   sZnnDiG26JWmnD/B8Audu97LcxjxcWI8Jc0CQEYA5PhLU229lA9EzI0JXhoozIBC
   TlcKFDuLm88VSmlHqDyqvF9YNOpEdc/p2rFLuZS2ndB4D+vu6mjwc5iZ3HECQCxy
   GBHRclQ3Ti9w76lpv+2kvI4IekRMZWDWnnWfwta+DGxwCgw2pfpleBZkWqdBepb5
   JFQbcxQJ0wvRYXo8qaUCQQCgTvWswBj6OTP7LTvBlU1teAN2Lnrk/N5AYHZIXW6m
   nUG9lYvH7DztWDTioXMrruPF7bdXfZOVJD8t0I4OUzvC
   -----END RSA PRIVATE KEY-----

   将文件另存为private-key.pem

2. 公共证书：打开记事本并复制粘贴以下密钥：

   -----BEGIN CERTIFICATE-----
   MIICfzCCAegCCQDxxeXw914Y2DANBgkqhkiG9w0BAQsFADCBgzELMAkGA1UEBhMC
   SU4xEzARBgNVBAgMCldlc3RiZW5nYWwxEDAOBgNVBAcMB0tvbGthdGExFDASBgNV
   BAoMC1BhbmNvLCBJbmMuMRUwEwYDVQQDDAxSb2hpdCBQcmFzYWQxIDAeBgkqhkiG
   9w0BCQEWEXJvZm9mb2ZAZ21haWwuY29tMB4XDTIwMDkwOTA1NTExN1oXDTIwMTAw
   OTA1NTExN1owgYMxCzAJBgNVBAYTAklOMRMwEQYDVQQIDApXZXN0YmVuZ2FsMRAw
   DgYDVQQHDAdLb2xrYXRhMRQwEgYDVQQKDAtQYW5jbywgSW5jLjEVMBMGA1UEAwwM
   Um9oaXQgUHJhc2FkMSAwHgYJKoZIhvcNAQkBFhFyb2ZvZm9mQGdtYWlsLmNvbTCB
   nzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAt/EfcF3FG4TneOBWr4JhOUdyuCXm
   Dhy5yO3VKtQfPxr+5d0joCSnn/5vYDNSr1MfedZmqVxrXFoMAdPCd71BNmDmeLVi
   QK61WREtASP0ZhQMoUBT+R3Fpdy0jPS0YoT/fBd96CJCmgsQOS8Tq5IKVeB61MyC
   kwAQ2Goe0T3sdVkCAwEAATANBgkqhkiG9w0BAQsFAAOBgQATe6ixdAjoV7BSHgRX
   bXM2+IZLq8kq3s7ck0EZrRVhsivutcaZwDXRCCinB+OlPedbzXwNZGvVX0nwPYHG
   BfiXwdiuZeVJ88ni6Fm6RhoPtu2QF1UExfBvSXuMBgR+evp+e3QadNpGx6Ppl1aC
   hWF6W2H9+MAlU7yvtmCQQuZmfQ==
   -----END CERTIFICATE-----

   将文件另存为public-cert.pem

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the
// server.address() method
  
var tls = require('tls'),
    fs = require('fs'),
  
// Port and host address for server    
PORT = 1337,
HOST = '127.0.0.1',
value = "";
   
// Private key and public certificate for access
var options = {
  key: fs.readFileSync('private-key.pem'),
  cert: fs.readFileSync('public-cert.pem'),
  rejectUnauthorized: false
};
  
// Creating and initializing server
var server = tls.createServer(options, function(socket) {
  
  // Print the data that we received
  socket.on("data", function(data) {
      console.log('\nReceived: %s ',
      data.toString().replace(/(\n)/gm, ""));
  });
  
});
  
// Start listening on a specific port and address
server.listen(PORT, HOST, function() {
  console.log("I'm listening at %s, on port %s", HOST, PORT);
});
  
// When an error occurs, show it.
server.on("error", function(error) {
  
  console.error(error);
  // Close the connection after the error occurred.
  // server.destroy();
  
});
  
server.on("end", ()=>{
  server.end();
  // server.destroy();
})
  
// Creating and initializing client
var client = tls.connect(PORT, 
     HOST, options, function() {
  
  // Check if the authorization worked
  if (client.authorized) {
      console.log("Connection authorized by"
          + " a Certificate Authority.");
  } else {
      console.log("Connection not authorized: "
             + client.authorizationError)
  }
  
  // Send a friendly message
  client.write("Bound address : " + value);
  client.end();
});
  
// Getting the bound address 
// by using address method
value = client.address();
  
// console.log("Bound address : " + value)
  
client.on("close", function() {
  console.log("Connection closed");
});
  
// When an error occurs, show it.
client.on("error", function(error) {
  
  console.error(error);
  // Close the connection after the error occurred.
  client.destroy();
  
});

输出：

I'm listening at 127.0.0.1, on port 1337
Connection not authorized: DEPTH_ZERO_SELF_SIGNED_CERT

Received: Bound address : [object Object]
Connection closed

示例 2：文件名：index.js

Javascript

// Node.js program to demonstrate the
// server.address() method
  
var tls = require('tls'),
    fs = require('fs'),
  
// Port and host address for server    
PORT = 1337,
HOST = '127.0.0.1';
   
// Private key and public certificate for access
var options = {
  key: fs.readFileSync('private-key.pem'),
  cert: fs.readFileSync('public-cert.pem'),
  rejectUnauthorized: false
};
  
// Creating and initializing server
var server = tls.createServer(options, function(socket) {
  
  // Print the data that we received
  socket.on('data', function(data) {
      console.log('\nReceived: %s ',
      data.toString().replace(/(\n)/gm, ""));
  });
});
  
  
// Start listening on a specific port and address
server.listen(PORT, HOST, function() {
  console.log("I'm listening at %s, "
       + "on port %s", HOST, PORT);
});
  
// Creating and initializing client
var client = tls.connect(PORT,
     HOST, options, function() {
    
 // Getting the bound address 
 // by using address method
 const value = client.address();
 client.write("Bound address : " + value)
  
 client.end();
});

使用以下命令运行 index.js 文件：

node index.js

输出：

I'm listening at 127.0.0.1, on port 1337

Received: Bound address : [object Object] 

参考： https://nodejs.org/dist/latest-v12.x/docs/api/tls.html#tls_server_address