node.jssocket.getrecvbbuffersize()方法

node . js socket . getrecvbbuffersize()方法

原文:https://www . geesforgeks . org/node-js-socket-getrecvbuffersize-method/

socket.getRecvBufferSize()是 dgram 模块中 socket 类的内置应用程序编程接口，用于获取套接字接收缓冲区的大小(以字节为单位)。

语法:

const socket.getSendBufferSize()


参数:此方法不接受任何参数。

返回值:这个方法返回套接字接收缓冲区的大小，以字节为单位。

示例 1: 文件名:index.js

java 描述语言

// Node.js program to demonstrate the
// server.getRecvBufferSize() method
// Importing dgram module
var dgram = require('dgram');
// Creating and initializing client and
// server socket
var client = dgram.createSocket("udp4");
var server = dgram.createSocket("udp4");
// Catching the message event
server.on("message", function (msg) {
// Displaying the client message
process.stdout.write("UDP String: " + msg + "\n");
// Exiting process
process.exit();
})
  // Binding server with port
  .bind(1234, () => {
  // Getting the receive buffer size
  // by using getRecvBufferSize() method
  const size = server.getRecvBufferSize();
  // Display the result
  console.log(size);
});
// Client sending message to server
client.send("Hello", 0, 7, 1234, "localhost");


输出:

65536
UDP String: Hello


示例 2: 文件名:index . js

Javascript

// Node.js program to demonstrate the
// server.getRecvBufferSize() method
// Importing dgram module
var dgram = require('dgram');
// Creating and initializing client
// and server socket
var client = dgram.createSocket("udp4");
var server = dgram.createSocket("udp4");
// Catching the message event
server.on("message", function (msg) {
// Displaying the client message
process.stdout.write("UDP String: " + msg + "\n");
// Exiting process
process.exit();
});
// Catching the listening event
server.on('listening', () => {
  // Getting address information for
  // the server
  const address = server.address();
  // Display the result
  console.log(
`server listening ${address.address}:${address.port}`);
});
// Binding server with port address
// by using bind() method
server.bind(1234, () => {
  // Getting the receive buffer size
  // by using getRecvBufferSize() method
  const size = server.getRecvBufferSize();
  // Display the result
  console.log(size);
});
// Client sending message to server
client.send("Hello", 0, 7, 1234, "localhost");


输出:

server listening 0.0.0.0:1234
65536
UDP String: Hello


使用以下命令运行 index.js 文件:

node index.js


参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/dgram . html # dgram _ socket _ getrecvbuffersize