从零开始学习Node.js系列教程五：服务器监听方法示例

更新时间：2020-05-06 11:30:01 作者：startmvc

本文实例讲述了Node.js服务器监听方法。分享给大家供大家参考，具体如下：httpsnifferInvoke.js

本文实例讲述了Node.js服务器监听方法。分享给大家供大家参考，具体如下：

httpsnifferInvoke.js


var http = require('http');
var sniffer = require('./httpsniffer');
var server = http.createServer(function(req, res){
 res.writeHead(200, {'Content-Type': 'text/plain'});
 res.end('Hello, World!\n');
});
sniffer.sniffOn(server);
server.listen(3000);

httpsniffer.js


//http sniffer 监听每个服务器事件，然后输出每个事件的相关信息
var url = require('url');
var util = require('util');
exports.sniffOn = function(server){
 server.on('request', function(req, res){
 util.log('e_request');
 util.log(reqToString(req));
 });
 server.on('close', function(error){
 util.log('e_close error=' + error);
 });
 server.on('checkContinue', function(req, res){
 util.log('e_checkContinue');
 util.log(reqToString(req));
 res.writeContinue();
 });
 server.on('upgrade', function(req, socket, head){
 util.log('e_upgrade');
 util.log(reqToString(req));
 });
 server.on('clientError', function(){
 util.log('e_clientError');
 });
}
var reqToString = function(req){
 var ret = 'request' + req.method + ' ' + req.httpVersion + ' ' + req.url + '\n';
 ret += JSON.stringify(url.parse(req.url, true)) + '\n';
 var keys = Object.keys(req.headers);
 for (var i = 0; i < keys.length; i++){
 var key = keys[i];
 ret += i + ' ' + key + ': ' + req.headers[key] + '\n';
 }
 if (req.trailers) ret += req.trailers + '\n';
 return ret;
}
exports.reqToString = reqToString;