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August 29, 2015 14:18
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Streaming XHR response
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| $(function() { | |
| var url = 'http://127.0.0.1:8000/'; | |
| var req = new XMLHttpRequest(); | |
| var updateProgress = function(e) { | |
| var chunks = req.responseText.split('\n'); | |
| var last_chunk = chunks[chunks.length - 1]; | |
| if (last_chunk) { | |
| console.log(last_chunk); | |
| } | |
| }; | |
| req.onprogress = updateProgress; | |
| req.open("GET", url); | |
| req.send(); | |
| }); |
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| <html> | |
| <head> | |
| <title>exp</title> | |
| </head> | |
| <script src="jquery-2.1.3.min.js"></script> | |
| <script src="client.js"></script> | |
| <body> | |
| see console | |
| </body> | |
| </html> |
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| var http = require('http'); | |
| var counts_map = {}; | |
| var res_map = {}; | |
| var id = 0; | |
| var scheduleWrite = function(req_id) { | |
| setTimeout(function() { | |
| var res = res_map[req_id]; | |
| var count = counts_map[req_id].count; | |
| if (count >= 0) { | |
| res.write('foo_' + count); | |
| res.write('\n'); | |
| counts_map[req_id].count--; | |
| scheduleWrite(req_id); | |
| } else { | |
| res.end('foo_last'); | |
| delete counts_map[req_id]; | |
| delete res_map[req_id]; | |
| } | |
| }, 200); | |
| }; | |
| http.createServer(function(req, res) { | |
| res.setHeader('Access-Control-Allow-Origin', '*'); | |
| res.setHeader('content-type', 'application/octet-stream'); | |
| var req_id = (++id).toString(16); | |
| scheduleWrite(req_id); | |
| counts_map[req_id] = { count: 10 }; | |
| res_map[req_id] = res; | |
| }).listen(8000, function() { | |
| console.log('server is listening on port 8000') | |
| }); |
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