Node.js http。ClientRequest.setTimeout()方法
原文:https://www . geesforgeks . org/node-js-http-client request-settimeout-method/
http。ClientRequest.setTimeout() 是 HTTP 模块内 ClientRequest 类的内置应用编程接口，用于设置客户端请求的请求超时。
语法:
request.setTimeout(timeout[, callback])
参数:该方法以超时值为参数，单位为毫秒，第二个参数是给定超时值后执行的回调函数。
返回值:这个方法只返回一个回调函数做进一步操作。
示例 1: Filename-index.js
java 描述语言
// Node.js program to demonstrate the
// request.setTimeout() method
// Importing http module
const http = require('http');
// Create an HTTP server
const server = http.createServer((req, res) => {
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.end('okay');
});
// Now that server is running
server.listen(3000, '127.0.0.1', () => {
// Make a request
const options = {
port: 3000,
host: '127.0.0.1',
headers: {
'Connection': 'Upgrade',
'Upgrade': 'websocket'
}
};
// Getting client request
const req = http.request(options);
// Setting the timeout for the client request
// by using host method
req.setTimeout(3000, () => {
console.log("timeout")
process.exit(0)
})
});
使用以下命令运行 index.js 文件:
node index.js
输出:
timeout
示例 2: Filename-index.js
【JavaScript】
// Node.js program to demonstrate the
// request.setTimeout() method
// Importing http module
const http = require('http');
// Create an HTTP server
http.createServer((req, res) => { }).listen(3000, '127.0.0.1', () => {
// Getting client request
const req = http.request({
port: 3000,
host: '127.0.0.1',
});
// Setting the timeout for the client request
// by using host method
req.setTimeout(5000, () => {
console.log("timeout")
process.exit(0)
})
});
使用以下命令运行 index.js 文件:
node index.js
输出:
timeout
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