详解nodejs http请求相关总结

let req = http.request("http://www.baidu.com", (res) =>{
 console.log(res.statusCode);
});
req.end();//必须调用end()方法结束请求

let req = http.request("http://www.baidu.com", (res) =>{
 console.log(res.statusCode);
});
req.end();//必须调用end()方法结束请求

let req = http.request({hostname:"www.baiduc.com",port:80}, (res) =>{
 console.log(res.statusCode);
});
req.end();//必须调用end()方法结束请求

let req = http.get("http://www.baidu.com", (res) =>{
 console.log(res.statusCode);
});

let req = http.get("http://www.baidu.com", (res) =>{
 console.log(res.statusCode);
});
 req.setTimeout(1,()=>{
  console.log(`请求超时了`);
  req.abort();//终止请求
 });

let requestTimer = null;
let req = http.get("http://www.baidu.com", (res) =>{
 console.log(res.statusCode);
 if(res.statusCode === 200){
  clearTimeout(requestTimer);//请求超时之前完成，清除超时定时器
 }
});

requestTimer = setTimeout(() => {
  req.emit("timeout", {"msg": "请求超时了"});//如果请求超时了则发送timeout事件
}, 1000);

req.on("timeout",(msg) => {//监听timeout事件并终止请求
 console.log(`收到timeout事件!`);
 req.abort();
 console.log(`终止请求`);
});

let req = http.get("http://www.baidu.com", (res) =>{
 let resStr = "";
 res.on("data", (res) => {
  resStr += res;
 }); 
 res.on("end", () => {
  console.log(resStr);
 });
});