node . js socket . getsendbuffersize()方法
原文:https://www . geesforgeks . org/node-js-socket-getsendbuffersize-method/
socket . getsendbuffersize()方法是 dgram 模块内 Socket 类的内置应用编程接口，用于获取 Socket 发送缓冲区的大小(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.getSendBufferSize() 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 send buffer size
// by using getSendBufferSize() method
const size = server.getSendBufferSize();
// 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.getSendBufferSize() 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 getSendBufferSize() method
const size = server.getSendBufferSize();
// 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 _ getsendbuffersize
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