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| 1 | +var http = require('http'); |
| 2 | +var parse = require('url').parse; |
| 3 | +var timeoutTime= 15000; //timeout in millisecond |
| 4 | + |
| 5 | +exports.get = function(path,callback){ |
| 6 | + var options = { |
| 7 | + host : 'bbs.sjtu.edu.cn', |
| 8 | + port : '80', |
| 9 | + path : path, |
| 10 | + method :'GET', |
| 11 | + headers: { |
| 12 | + 'Host':'bbs.sjtu.edu.cn', |
| 13 | + } |
| 14 | + }; |
| 15 | + // 设置请求超时 |
| 16 | + var req = null ,req_timeout = null; |
| 17 | + var bufArr = []; |
| 18 | + var size = 0; |
| 19 | + |
| 20 | + req_timeout = setTimeout(function() { |
| 21 | + req_timeout = null; |
| 22 | + console.log("timed out here in global"); |
| 23 | + req.abort(); |
| 24 | + callback(null); |
| 25 | + }, timeoutTime); |
| 26 | + |
| 27 | + req = http.request(options, function(res) { |
| 28 | + res.on('data', function (chuck) { |
| 29 | + tmp = new Buffer(chuck); |
| 30 | + size += tmp.length; |
| 31 | + bufArr.push(tmp); |
| 32 | + }).on('end', function(){ |
| 33 | + //clear the timeout when the request is finished or failed |
| 34 | + clearTimeout(req_timeout); |
| 35 | + callback(Buffer.concat(bufArr,size)); |
| 36 | + |
| 37 | + }).on('error', function(err) { |
| 38 | + clearTimeout(req_timeout); |
| 39 | + callback(err /* , res */); |
| 40 | + }).on('aborted', function() { |
| 41 | + clearTimeout(req_timeout); |
| 42 | + }); |
| 43 | + }).on('error', function(e) { |
| 44 | + if(req_timeout) { |
| 45 | + clearTimeout(req_timeout); |
| 46 | + //console.log("Got error: " + e.message); |
| 47 | + callback(null ); |
| 48 | + } |
| 49 | + }); |
| 50 | + req.end(); |
| 51 | + |
| 52 | +} |
| 53 | + |
| 54 | + |
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