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Teste de Stream de Dados Continuo
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| <html> | |
| <head> | |
| <title>Dashboard</title> | |
| <script src="/socket.io/socket.io.js"></script> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script> | |
| <script> | |
| $(document).ready(function(){ | |
| socket = io.connect(); | |
| socket.on('update_dados', function(json){ | |
| $("#div_dados").html(json.dados); | |
| }); | |
| socket.on('close_dados', function(){ | |
| $("#div_dados").html('Fim da Transmissao!'); | |
| }); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <h2>DASHBOARD</h2> | |
| <p id="div_dados"></p> | |
| </body> | |
| </html> |
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| var http = require('http'), fs = require('fs'); | |
| //Escrevendo várias vezes no response (fazer com o curl para ver melhor) | |
| var server = http.createServer(function(request, response) | |
| { | |
| switch(request.url) | |
| { | |
| case '/': | |
| fs.readFile(__dirname + '/index.html', function (err, data){ | |
| if (err) { | |
| response.writeHead(500, {"Content-Type":"text/html"}); | |
| return response.end('Error loading index.html'); | |
| } else { | |
| response.writeHead(200, {"Content-Type":"text/html"}); | |
| response.end(data); | |
| } | |
| }); | |
| break; | |
| case '/stream': | |
| response.writeHead(200, {"Content-Type":"text/json"}); | |
| setInterval(function(){ response.write((new Date()).toLocaleTimeString()); }, 1000); | |
| /* | |
| file = __dirname + '/arquivo.txt'; | |
| fs.watch(file, function(curr, prev){ | |
| fs.readFile(file, function (err, dados){ | |
| response.write(dados); | |
| }); | |
| }); | |
| */ | |
| break; | |
| } | |
| }).listen(8080); | |
| var io = require('socket.io').listen(server); | |
| // Requisição client para buscar o stream, e envia via socket | |
| var options = { | |
| host: 'localhost', | |
| port: 8080, | |
| path: '/stream', | |
| method: 'GET' | |
| }; | |
| var reqStream = http.request(options, function(res) | |
| { | |
| if(res.statusCode==200) | |
| { | |
| res.setEncoding('utf8'); | |
| res.on('data', function (chunk){ | |
| io.sockets.emit('update_dados', { dados: chunk }); | |
| }); | |
| res.on('end', function(){ | |
| io.sockets.emit('close_dados'); | |
| }); | |
| } else { | |
| io.sockets.emit('close_dados'); | |
| } | |
| }); | |
| reqStream.end(); |
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