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XHR streaming example
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| <p>Hello | |
| <script> | |
| var xhr = new XMLHttpRequest(); | |
| xhr.open('GET', '/stream'); | |
| xhr.seenBytes = 0; | |
| xhr.onreadystatechange = function() { | |
| console.log("state change.. state: "+ xhr.readyState); | |
| if(xhr.readyState == 3) { | |
| var newData = xhr.response.substr(xhr.seenBytes); | |
| console.log("newData: <<" +newData+ ">>"); | |
| document.body.innerHTML += "New data: <<" +newData+ ">><br />"; | |
| xhr.seenBytes = xhr.responseText.length; | |
| console.log("seenBytes: " +xhr.seenBytes); | |
| } | |
| }; | |
| xhr.addEventListener("error", function(e) { | |
| console.log("error: " +e); | |
| }); | |
| console.log(xhr); | |
| xhr.send(); | |
| </script> |
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| require 'goliath' | |
| class Server < Goliath::API | |
| def response(env) | |
| case env['REQUEST_PATH'] | |
| when /index/ then | |
| [200, {}, IO.read('index.html')] | |
| when /stream/ then | |
| EM.add_periodic_timer(3) do | |
| env.stream_send("data event! ... ") | |
| end | |
| headers = {'Content-Type' => 'application/x-javascript'} | |
| [200, headers, Goliath::Response::STREAMING] | |
| end | |
| end | |
| end |
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