/// <summary>
///
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public static WebSocketHeader Parse(NetworkStream stream)
{
WebSocketHeader _retVal = null;
if (stream.CanRead)
{
_retVal = new WebSocketHeader();
int _byteRcvd = Int32.MinValue;
int _delimiter = 23;
List <byte> _buffer = new List <byte>();
while (stream.DataAvailable)
{
_byteRcvd = stream.ReadByte();
if (_buffer.Count > 1)
{
if (_delimiter.Equals(_byteRcvd + _buffer[(_buffer.Count - 1)]))
{
string _line = UTF8Encoding.ASCII.GetString(_buffer.ToArray(), 0, (_buffer.Count - 1));
string[] _tokens = _line.Trim().Split(new char[] { ':' }, 2);
if (_tokens.Length > 1)
{
string _key = _tokens.GetValueOrDefault(0, string.Empty).Trim();
string _val = _tokens.GetValueOrDefault(1, string.Empty).Trim();
if (!string.IsNullOrEmpty(_key) &&
!string.IsNullOrEmpty(_val))
{
_retVal.SetValueWithKey(_key, _val);
}
}
else
{
if (_line.ContainsAny(new string[] { "HTTP", "GET" }))
{
_retVal.Version = _line;
}
}
_buffer.Clear();
continue;
}
}
_buffer.Add((byte)_byteRcvd);
}
}
return(_retVal);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
protected override WebSocketHeader GetResponseHeader()
{
WebSocketHeader _response = new WebSocketHeader();
_response.Version = "HTTP/1.1 101 Switching Protocols";
_response.Upgrade = "websocket";
_response.Connection = "Upgrade";
_response.WebSocketAccept = GetComputedBase64String();
return(_response);
}
/// <summary>
///
/// </summary>
/// <param name="socket"></param>
/// <returns></returns>
public static WebSocketHeader Parse(Socket socket)
{
WebSocketHeader _retVal = null;
using (NetworkStream _stream = new NetworkStream(socket))
{
_retVal = Parse(_stream);
}
return(_retVal);
}
/// <summary>
///
/// </summary>
public void Handshake()
{
WebSocketHeader _response = GetResponseHeader();
if (_response != null)
{
using (NetworkStream _stream = new NetworkStream(CurrentConnection))
{
if (_stream.CanWrite)
{
using (StreamWriter _writer = new StreamWriter(_stream))
{
_writer.Write(_response);
}
}
}
}
}
