public byte[] ToBytes()
{
var buffer = new List <byte>();
var header = (int)Fin;
header = (header << 1) + (int)Rsv1;
header = (header << 1) + (int)Rsv2;
header = (header << 1) + (int)Rsv3;
header = (header << 4) + (int)Opcode;
header = (header << 1) + (int)Masked;
header = (header << 7) + (int)PayloadLen;
buffer.AddRange(((ushort)header).ToBytes(ByteOrder.BIG));
if (PayloadLen >= 126)
{
buffer.AddRange(ExtPayloadLen);
}
if (Masked == Mask.MASK)
{
buffer.AddRange(MaskingKey);
}
if (PayloadLen > 0)
{
buffer.AddRange(PayloadData.ToBytes());
}
return(buffer.ToArray());
}
public CloseEventArgs(PayloadData data)
: base(Opcode.CLOSE, data)
{
_code = (ushort)CloseStatusCode.NO_STATUS_CODE;
_reason = string.Empty;
_wasClean = false;
if (data.Length >= 2)
{
_code = Ext.To <ushort>(Ext.SubArray(data.ToBytes(), 0, 2), ByteOrder.BIG);
}
if (data.Length > 2)
{
var buffer = Ext.SubArray(data.ToBytes(), 2, (int)(data.Length - 2));
_reason = Encoding.UTF8.GetString(buffer);
}
}
private string getReasonFrom(PayloadData data)
{
if (data.Length <= 2)
{
return(String.Empty);
}
var buffer = data.ToBytes().SubArray(2, (int)(data.Length - 2));
return(Encoding.UTF8.GetString(buffer));
}
private bool canSendAsCloseFrame(PayloadData data)
{
if (data.Length >= 2)
{
var code = data.ToBytes().SubArray(0, 2).To <ushort>(ByteOrder.BIG);
if (code == (ushort)CloseStatusCode.NO_STATUS_CODE ||
code == (ushort)CloseStatusCode.ABNORMAL ||
code == (ushort)CloseStatusCode.TLS_HANDSHAKE_FAILURE)
{
return(false);
}
}
return(true);
}
public void Print()
{
byte[] buffer;
long count, i, j;
int countDigit, remainder;
string countFmt, extPayloadLen, headerFmt, topLineFmt, bottomLineFmt, payloadData, spFmt;
switch (ExtPayloadLen.Length)
{
case 2:
extPayloadLen = ExtPayloadLen.To <ushort>(ByteOrder.BIG).ToString();
break;
case 8:
extPayloadLen = ExtPayloadLen.To <ulong>(ByteOrder.BIG).ToString();
break;
default:
extPayloadLen = String.Empty;
break;
}
if (((Opcode.TEXT | Opcode.PING | Opcode.PONG) & Opcode) == Opcode &&
Masked == Mask.UNMASK &&
PayloadLength > 0)
{
payloadData = Encoding.UTF8.GetString(PayloadData.ToBytes());
}
else
{
payloadData = BitConverter.ToString(PayloadData.ToBytes());
}
headerFmt = @"
WsFrame:
FIN={0}, RSV1={1}, RSV2={2}, RSV3={3}, Opcode={4},
MASK={5}, Payload Len={6}, Extended Payload Len={7},
Masking Key ={8},
Payload Data={9}";
buffer = ToBytes();
count = (long)(Length / 4);
remainder = (int)(Length % 4);
if (count < 10000)
{
countDigit = 4;
countFmt = "{0,4}";
}
else if (count < 0x010000)
{
countDigit = 4;
countFmt = "{0,4:X}";
}
else if (count < 0x0100000000)
{
countDigit = 8;
countFmt = "{0,8:X}";
}
else
{
countDigit = 16;
countFmt = "{0,16:X}";
}
spFmt = String.Format("{{0,{0}}}", countDigit);
topLineFmt = String.Format(@"
{0} 01234567 89ABCDEF 01234567 89ABCDEF
{0}+--------+--------+--------+--------+", spFmt);
Func <string, Action <string, string, string, string> > func = s =>
{
long lineCount = 0;
string lineFmt = String.Format(" {0}|{{1,8}} {{2,8}} {{3,8}} {{4,8}}|", s);
return((arg1, arg2, arg3, arg4) =>
{
Console.WriteLine(lineFmt, ++lineCount, arg1, arg2, arg3, arg4);
});
};
var printLine = func(countFmt);
bottomLineFmt = String.Format(" {0}+--------+--------+--------+--------+", spFmt);
Console.WriteLine(headerFmt,
Fin, Rsv1, Rsv2, Rsv3, Opcode,
Masked, PayloadLen, extPayloadLen,
BitConverter.ToString(MaskingKey),
payloadData);
Console.WriteLine(topLineFmt, String.Empty);
for (i = 0; i <= count; i++)
{
j = i * 4;
if (i < count)
{
printLine(
Convert.ToString(buffer[j], 2).PadLeft(8, '0'),
Convert.ToString(buffer[j + 1], 2).PadLeft(8, '0'),
Convert.ToString(buffer[j + 2], 2).PadLeft(8, '0'),
Convert.ToString(buffer[j + 3], 2).PadLeft(8, '0'));
}
else if (i == count && remainder > 0)
{
printLine(
Convert.ToString(buffer[j], 2).PadLeft(8, '0'),
remainder >= 2 ? Convert.ToString(buffer[j + 1], 2).PadLeft(8, '0') : String.Empty,
remainder == 3 ? Convert.ToString(buffer[j + 2], 2).PadLeft(8, '0') : String.Empty,
String.Empty);
}
}
Console.WriteLine(bottomLineFmt, String.Empty);
}
private ushort getCodeFrom(PayloadData data)
{
return(data.Length >= 2
? data.ToBytes().SubArray(0, 2).To <ushort>(ByteOrder.BIG)
: (ushort)CloseStatusCode.NO_STATUS_CODE);
}