Created
December 18, 2011 14:55
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var http = require('http'), | |
url = require('url'); | |
var server = http.createServer(onRequest) | |
server.listen(8888); | |
function onRequest(request, response) { | |
var parsedUrl = url.parse(request.url, true), | |
urlToExpand = parsedUrl.query.url; | |
expand(urlToExpand, writeResponse); | |
function writeResponse(error, newUrl) { | |
if (error) { | |
response.writeHead(500, { 'Content-Type': 'text/plain'}); | |
return response.end(error.message); | |
} | |
response.writeHead(200, { 'Content-Type': 'text/plain'}); | |
response.end(newUrl); | |
} | |
} | |
function expand(urlToParse, callback) { | |
var short = url.parse(urlToParse); | |
var options = { | |
host: short.hostname, | |
port: 80, | |
path: short.pathname | |
}; | |
var clientRequest = http.get(options, extractRealURL); | |
clientRequest.on("error", forwardError); | |
function extractRealURL(res) { | |
callback(null, res.headers.location); | |
} | |
function forwardError(error) { | |
callback(err); | |
} | |
} |
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This code fails if you do not enter a url parameter. You need to check if
parsedUrl.query.url
is defined before continuing with call toexpand(urlToExpand, writeResponse);