Node.js server.address()用法及代碼示例

server.address()是tls模塊內的Socket類的內置應用程序編程接口，用於獲取服務器的綁定地址。

用法:

const server.address()

參數：此方法不接受任何參數。

返回值：此方法返回包含家族名稱和服務器端口的綁定地址。

如何生成私鑰和公共證書？

私鑰：打開記事本並複製粘貼以下 key ：

將文件另存為private-key.pem

公開證書：打開記事本並複製粘貼以下 key ：

將文件另存為public-cert.pem

範例1： 文件名：index.js

// 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 acess 
var options = { 
  key:fs.readFileSync('private-key.pem'), 
  cert:fs.readFileSync('public-cert.pem'), 
  rejectUnauthorized:false
}; 
  
// Creating and intializing 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 intializing 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(); 
  
});

輸出：

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

範例2： 文件名：index.js

// 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 acess 
var options = { 
  key:fs.readFileSync('private-key.pem'), 
  cert:fs.readFileSync('public-cert.pem'), 
  rejectUnauthorized:false
}; 
  
// Creating and intializing 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 intializing 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(); 
});

使用以下命令運行index.js文件：

node index.js

輸出：

I'm listening at 127.0.0.1, on port 1337

Received:Bound address:[object Object]

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

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Node.js server.address() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。