我正在尝试创建一个C# Websocket服务器，但似乎无法使其工作。 我现在已经有了一个接受TCPClient的服务器，从客户端接收HTTP请求，并尝试发送HTTP响应，以便完成HTML5 WebSocket握手。
我认为我的握手操作有问题，即服务器发送给客户端的握手操作。 我阅读了草案（Websocket 76 draft），该草案指出，在握手结束时必须为给定的两个密钥提供响应。该响应由服务器计算得出。
这是我的代码：
static void Main(string[] args)
{
int port = 8181;
IPAddress localAddr = IPAddress.Loopback;
TcpListener server = new TcpListener(localAddr, port);
server.Start();
// Buffer for reading data
Byte[] receivedBytes = new Byte[256];
String data = null;
// Enter the listening loop.
while (true)
{
Console.WriteLine("Waiting for a connection...");
// Perform a blocking call to accept requests.
// You could also user server.AcceptSocket() here.
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Connected!\n");
data = null;
// Get a stream object for reading and writing
NetworkStream stream = client.GetStream();
int i;
// Loop to receive all the data sent by the client.
while ((i = stream.Read(receivedBytes, 0, receivedBytes.Length)) != 0)
{
// Translate data bytes to a ASCII string.
data = System.Text.Encoding.UTF8.GetString(receivedBytes, 0, i);
Console.WriteLine("Received:");
Console.WriteLine(data);
Byte[] response_token = hashResponse(data);
string handshake = "HTTP/1.1 101 WebSocket Protocol Handshake\r\n"
+ "Upgrade: WebSocket\r\n" + "Connection: Upgrade\r\n"
+ "Sec-WebSocket-Origin: http://localhost\r\n"
+ "Sec-WebSocket-Location: ws://localhost:8181/websession\r\n"
+ "\r\n";
Byte[] writtenBytes = Encoding.UTF8.GetBytes(handshake);
stream.Write(writtenBytes, 0, writtenBytes.Length);
stream.Write(response_token, 0, response_token.Length);
Console.WriteLine("Send:");
Console.WriteLine(handshake);
string strHash = Encoding.UTF8.GetString(response_token);
Console.WriteLine(strHash);
}
}
}
static Byte[] hashResponse(string receivedData)
{
string strDel = "\r\n";
char[] delimeter = strDel.ToCharArray();
string Key1 = null;
string Key2 = null;
string hash = null;
MD5 md5 = MD5.Create();
string[] lines = receivedData.Split(delimeter);
Key1 = lines[10].Substring(20);
Key2 = lines[12].Substring(20);
hash = lines[16];
Int64 numbersKey1 = Convert.ToInt64(string.Join(null, Regex.Split(Key1, "[^\\d]")));
Int64 numbersKey2 = Convert.ToInt64(string.Join(null, Regex.Split(Key2, "[^\\d]")));
Int64 numberSpaces1 = countSpaces(Key1);
Int64 numberSpaces2 = countSpaces(Key2);
int dividedKey1 = (int) (numbersKey1 / numberSpaces1);
int dividedKey2 = (int) (numbersKey2 / numberSpaces2);
Byte[] encodedKey1 = Encoding.UTF8.GetBytes(dividedKey1.ToString());
Byte[] encodedKey2 = Encoding.UTF8.GetBytes(dividedKey2.ToString());
Byte[] encodedHash = Encoding.UTF8.GetBytes(hash);
Byte[] combined = Encoding.UTF8.GetBytes(dividedKey1.ToString() + dividedKey2.ToString() + hash);
Byte[] responseHash = md5.ComputeHash(combined);
return responseHash;
}
static int countSpaces(string key)
{
int counter = 0;
char[] charArray = key.ToCharArray();
foreach (char c in charArray)
{
if (c.Equals(' '))
counter++;
}
return counter;
}
我用于测试的HTML页面名为Test.html，托管在运行在我的计算机上的Apache Web服务器上，我通过在Chrome中浏览http://localhost/Test.html来访问它。
有人知道我做错了什么吗？因为我已经很绝望了。
先感谢一下。
Dennis
draft-ietf-hybi-thewebsocketprotocol-00. 现在有了RFC 6455，我相信这是最新的规范，但我不知道Chrome 16实现了哪一个。 - Darin Dimitrov