Node.JS发送http请求批量检查文件中的网页地址、服务是否有效可用

var http = require('http')
var checkExists = function(urlPath, cb) {
 var options = { host: '192.168.2.101', port: 8064, path: encodeURI(urlPath)}
 var req = http.request(options, function(r) {
 cb && cb(r.statusCode == 200);
 })
 req.end()
}

 var http = require('http')
var url = require('url')
var checkUrlExists = function (Url, cb) {
 var options = {
 //method: 'HEAD',
 host: url.parse(Url).host,
 port: 80,
 path: url.parse(Url).pathname
 };
 var req = http.request(options, function (r) {
 cb && cb( r.statusCode == 200);
 });
 req.end();
}

var http = require('http')
var url = require('url')
var fs = require('fs')
/*
检查完整网址是否可用
*/
var checkUrlExists = function (Url, cb) {
 var options = {
 //method: 'HEAD',
 host: url.parse(Url).host,
 port: 80,
 path: url.parse(Url).pathname
 };
 var req = http.request(options, function (r) {
 cb && cb( r.statusCode == 200);
 });
 req.end();
}
/*
检查相对网址是否可用，需修改服务器地址和端口
*/
var checkExists = function(urlPath, cb) {
 var options = { host: '192.168.2.101', port: 8064, path: encodeURI(urlPath)}
 var req = http.request(options, function(r) {
 cb && cb(r.statusCode == 200);
 })
 req.end()
}
var checkFile = function(filePath) {
 fs.readFile(filePath, function(err, data) {
 if (err) {
 console.log(err)
 return
 }
 var lines = data.toString().split(/[\r\n]+/)
 var curr = 0
 var urlPath
 var checkNext = function(exist) {
 if (curr > lines.length - 1) {
 console.log('end')
 return
 }
 //console.log(curr, 'exist', exist, urlPath)
 if (!exist) {
 console.log(curr, 'exist', exist, urlPath)
 }
 if (curr >= lines.lines) {
 console.log('end')
 return
 }
 urlPath = lines[curr++]
 checkExists(urlPath, checkNext)
 }
 checkNext()
 })
}
checkFile('./visit.csv')