從零開始學習Node.js系列教程五：服務器監(jiān)聽方法示例

2019-11-19 16:50:13

字體：大中小

來源：轉載

供稿：網(wǎng)友

本文實例講述了Node.js服務器監(jiān)聽方法。分享給大家供大家參考，具體如下：

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 監(jiān)聽每個服務器事件，然后輸出每個事件的相關信息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;