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simple twitter stream [working!]
/*
* simple static fileserver + twitter feed
*/
var sys = require("sys"),
http = require("http"),
url = require("url"),
path = require("path"),
fs = require("fs"),
events = require("events"),
port = 8000;
// simple static server
function loadStaticFile(uri, response) {
var filename = path.join(process.cwd(), uri);
//
path.exists(filename, function(exists) {
if (!exists) {
response.writeHead(404, {"Content-Type": "text/plain"});
response.write("404 Not Found\n");
response.end();
return;
}
fs.readFile(filename, "binary", function(err, file) {
if (err) {
response.writeHead(500, {"Content-Type": "text/plain"});
response.write(err + "\n");
response.end();
return;
}
response.writeHead(200);
response.write(file, "binary");
response.end();
});
});
}
var twitterClient = http.createClient(80, 'api.twitter.com');
var tweetEmitter = new events.EventEmitter();
function getTweets() {
var request = twitterClient.request("GET", "/1/statuses/public_timeline.json", {"host": "api.twitter.com"});
request.addListener("response", function (response) {
var body = "";
response.addListener("data", function (data) {
body += data;
});
response.addListener("end", function (end) {
var tweets = JSON.parse(body);
if (tweets.length > 0) {
tweetEmitter.emit("tweets", tweets);
console.log(tweets, 'tweets loaded');
}
});
});
request.end();
}
setInterval(getTweets, 5000);
http.createServer(function (request, response) {
var uri = url.parse(request.url).pathname;
console.log(uri);
if (uri === '/stream') {
var cb = function (tweets) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.write(JSON.stringify(tweets));
response.end();
clearTimeout(timeout);
};
tweetEmitter.addListener("tweets", cb);
// timeout to kill requests that take longer than 10 secs
var timeout = setTimeout(function () {
response.writeHead(200, {"Content-Type": "text/plain"});
response.write(JSON.stringify([]));
response.end();
tweetEmitter.removeListener("tweets", cb);
}, 10000);
} else {
loadStaticFile(uri, response);
}
}).listen(port);
console.log("Server running at http://localhost:" + port + "/");
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