Save experiments

experiments/app.js

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+var app = require('express')();
+var server = require('http').Server(app);
+var io = require('socket.io')(server);
+
+server.listen(9000);
+
+app.get('/', function (req, res) {
+  res.sendFile(__dirname + '/index.html');
+});
+
+io.on('connection', function (socket) {
+  socket.emit('news', { hello: 'world' });
+  socket.on('my other event', function (data) {
+    console.log(data);
+  });
+});

experiments/client0.py

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+class SocketIO(object):
+
+    def __init__(self, host, port):
+        pass
+
+    def on(self, event, callback):
+        pass
+
+
+def on_news(self, data):
+    print(data)
+    self.emit('my other event', {'my': 'data'})
+
+
+s = SocketIO('localhost', 9000)
+s.on('news', on_news)

experiments/client1.py

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+import requests
+
+
+def get_packets(content):
+    packets = []
+    index = 0
+    content_length = len(content)
+    while index < content_length:
+        index, packet_length = read_packet_length(content, index)
+        index, packet = read_packet(content, index, packet_length)
+        packets.append((packet[0], packet[1:]))
+    return packets
+
+
+def read_packet_length(content, index):
+    while ord(content[index]) != 0:
+        index += 1
+    index += 1
+    packet_length_string = ''
+    while ord(content[index]) != 255:
+        packet_length_string += str(ord(content[index]))
+        index += 1
+    return index, int(packet_length_string)
+
+
+def read_packet(content, index, packet_length):
+    while ord(content[index]) == 255:
+        index += 1
+    packet = content[index:index + packet_length]
+    return index + packet_length, packet
+
+
+base_url = 'http://localhost:9000'
+session = requests.Session()
+# Establish engine.io connection
+response = session.get(
+    base_url + '/socket.io/?EIO=3&transport=polling&t=1416156610842-0')
+packets = get_packets(response.content)
+for packet_type, packet in packets:
+    print packet_type, packet
+packet_type, packet = packets[0]
+import json
+packet_json = json.loads(packet)
+print packet_json
+print packet_json['pingInterval']
+print packet_json['pingTimeout']
+print packet_json['sid']
+# Establish socket.io connection
+# Receive socket.io event
+# Send socket.io event
+# Send socket.io ping
+# Receive socket.io pong

experiments/index.html

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+<script src='/socket.io/socket.io.js'></script>
+<script>
+  var socket = io.connect('http://localhost');
+  socket.on('news', function (data) {
+    console.log(data);
+    socket.emit('my other event', { my: 'data' });
+  });
+</script>

experiments/proxy.js

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+var proxy = require('http-proxy').createProxyServer({
+  target: {host: 'localhost', port: 9000}
+});
+var server = require('http').createServer(function(req, res) {
+  console.log('[REQUEST] ' + req.url);
+  if (req.method == 'POST') {
+    var body = '';
+    req.on('data', function (data) {
+      body += data;
+    });
+    req.on('end', function () {
+      print_body('[REQUEST.BODY] ', body);
+    });
+  }
+  var _write = res.write;
+  res.write = function(data) {
+    print_body('[RESPONSE.BODY] ', data);
+    _write.call(res, data);
+  }
+  proxy.web(req, res);
+});
+function print_body(header, body) {
+  var text = String(body);
+  console.log(header + text);
+  for (var i = 0; i < text.length; i++) {
+    console.log('body[%s] = %s = %s', i, text[i], text.charCodeAt(i));
+  }
+}
+server.listen(8000);