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POImplementing handshake for hybi-17
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copied!<p>I'm trying to develop the <strong>handshake</strong> for <strong>websocket hybi-17 protocol</strong> (<a href="http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17" rel="nofollow">http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17</a>). According to that draft, I made the following code for the client (user-agent):</p> <pre><code>var host = 'ws://localhost/server.php'; if ('MozWebSocket' in window) ws = new MozWebSocket (host); else ws = new WebSocket (host); </code></pre> <p>and this code for the server (I skipped the socket initialization/management part):</p> <pre><code>$key = $value = null; preg_match ("#Sec-WebSocket-Key: (.*?)\r\n#", $buffer, $match) && $key = $match[1]; $key .= "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; $key = sha1 ($key); $key = pack ('H*', $key); $key = base64_encode ($key); $value = "HTTP/1.1 101 Switching Protocols\r\n" . "Upgrade: websocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Accept: {$key}"; socket_write ($socket, $value, strlen ($value)); </code></pre> <p>Now, following an example, starting with the client request (simply done with 'new MozWebSocket (host)' call):</p> <pre><code>GET /server.php HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: it-it,it;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Connection: keep-alive, Upgrade Sec-WebSocket-Version: 8 Sec-WebSocket-Origin: http://localhost Sec-WebSocket-Extensions: deflate-stream Sec-WebSocket-Key: oqFCBULD7k+BM41Bc3VEeA== Pragma: no-cache Cache-Control: no-cache Upgrade: websocket </code></pre> <p>The server response (echoed in the local shell, as a debug line):</p> <pre><code>HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: TlKc0Ck7WpqsLhMm/QXABMQWARk= </code></pre> <p>I followed what specified in the IETF hybi-17 draft but the client request <em>is still pending</em> and there's no real connection between client and server.</p> <p>What's wrong? What I have to do more?</p> <p>Thanks in advance.</p>

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