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POClient - Server WebSocket handshake
 

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    <p>I'm trying to implement a simple web socket server and client. This is my first time looking at them, so sorry if this question is obvious.</p> <p>I'm using Chrome v15, which I believe uses the 09 (version 8) protocol?</p> <p>I just don't seem to be able to get them to connect. The request I'm getting from the browser is:</p> <pre><code>GET /chat HTTP/1.1 Upgrade: websocket Connection: Upgrade Host: localhost:8181 Sec-WebSocket-Origin: http://localhost:51990 Sec-WebSocket-Key: JFAw5PLk45TodN2ERD1ePA== Sec-WebSocket-Version: 8 Cookie: size=4; CP.mode=B; ASP.NET_SessionId=zzx3d3ajepwwycqjaj1nyex4; .ASPXAUTH=781D3791DC2483756B3DA9FA8E031A9BACD357EBD8FA23B7BCB8BDA6526F28F77FC798A0D4BEC4E2B166700B5C08FA60CBF588D292BFC1D050C9B034522C93ACBEF28BC6D51FDC5B40F6050F03758DA1A3E4D3F7484BC4F7DA3602A5FAFD3023C8D4D5929B69F88DB417CA6F366A83F334807818E2C07E23C0D0993F25B3C9BDE02A; name=Test </code></pre> <p><em>I've noticed that the <code>Sec-WebSocket-Protocol</code> header is missing.</em></p> <p>The response I'm sending looks like this:</p> <pre><code>HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: VAuGgaNDB/reVQpGfDF8KXeZx5o= Sec-WebSocket-Protocol: chat </code></pre> <p>Can anyone shed some light on what I'm doing wrong please?</p> <p><strong>EDIT</strong>: The code I'm using to generate the accept key is:</p> <pre><code>public static String ComputeWebSocketHandshakeSecurityHash09(String secWebSocketKey) { const String MagicKEY = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; String secWebSocketAccept = String.Empty; // 1. Combine the request Sec-WebSocket-Key with magic key. String ret = secWebSocketKey + MagicKEY; // 2. Compute the SHA1 hash SHA1 sha = new SHA1CryptoServiceProvider(); byte[] sha1Hash = sha.ComputeHash(Encoding.UTF8.GetBytes(ret)); // 3. Base64 encode the hash secWebSocketAccept = Convert.ToBase64String(sha1Hash); return secWebSocketAccept; } </code></pre> <p><strong>EDIT</strong>: This is the response code:</p> <pre><code> StringBuilder mResponse = new StringBuilder(); mResponse.Append("HTTP/1.1 101 Switching Protocols" + Environment.NewLine); mResponse.Append("Upgrade: WebSocket" + Environment.NewLine); mResponse.Append("Connection: Upgrade" + Environment.NewLine); mResponse.Append(String.Format("Sec-WebSocket-Accept: {0}", ComputeWebSocketHandshakeSecurityHash09(secKey)) + Environment.NewLine); // Build the response for the client byte[] HandshakeText = Encoding.UTF8.GetBytes(mResponse.ToString()); logger.Log(""); logger.Log("Sending handshake ..."); ConnectionSocket.BeginSend(HandshakeText, 0, HandshakeText.Length, 0, HandshakeFinished, null); </code></pre>
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    1. COUnless I'm mistaking, your accept key seems to be incorrect. It should be `tixAAehY4D7GQBBUYkVMLZ3yccE=` according to the input. How are you calculating it? (Could you post the code for that please?)
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    2. COok, figured it out. the 'Sec-WebSocket-Protocol: chat' was not required in this version. It connects now, but only calls the onclose method clientside, not on open. Any Ideas?
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    3. COThat happens when the response was not correct in some way. Did you ensure adding two `CRLF`s?
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