public Html5SocketMsg(Encoding codec, ESocketDataType tp, byte[] msg)
{
_codec = codec;
_tip = tp;
_data = msg;
_tip = tp;
}
public static byte[] hybi10Encode(byte[] payload, ESocketDataType type /*, bool with_mask*/)
{
//https://github.com/lemmingzshadow/php-websocket/blob/master/server/lib/WebSocket/Connection.php
int payloadLength = payload.Length;
byte btype = 0;
switch (type)
{
case ESocketDataType.text: btype = 129; break;
case ESocketDataType.close: btype = 136; break;
case ESocketDataType.ping: btype = 137; break;
case ESocketDataType.pong: btype = 138; break;
}
int ix = 2;
byte[] send = null;
if (payloadLength > 65535)
{
byte[] bx = BitConverter.GetBytes((long)payloadLength);
send = new byte[payloadLength + 10];
send[0] = btype;
send[1] = 127;
send[2] = bx[7];
send[3] = bx[6];
send[4] = bx[5];
send[5] = bx[4];
send[6] = bx[3];
send[7] = bx[2];
send[8] = bx[1];
send[9] = bx[0];
ix = 10;
if (send[2] > 127)
{
throw (new Exception("TO BIG PACKET"));
}
}
else if (payloadLength > 125)
{
byte[] bx = BitConverter.GetBytes((short)payloadLength);
send = new byte[payloadLength + 4];
send[0] = btype;
send[1] = 126;
send[2] = bx[1];
send[3] = bx[0];
ix = 4;
}
else
{
send = new byte[payloadLength + 2];
send[0] = btype;
send[1] = (byte)payloadLength;
}
Array.Copy(payload, 0, send, ix, payloadLength);
return(send);
}
public void WriteSocketMsg(byte[] payload, ESocketDataType type)
{
byte[] dmp = Html5SocketMsg.hybi10Encode(payload, type);
stream.Write(dmp, 0, dmp.Length);
}
public void WriteSocketMsg(string msg, ESocketDataType type)
{
byte[] payload = Encoding.UTF8.GetBytes(msg);
WriteSocketMsg(payload, type);
}
public static Html5SocketMsg GetMsg(Encoding codec, Stream stream)
{
//https://github.com/lemmingzshadow/php-websocket/blob/master/server/lib/WebSocket/Connection.php
byte[] r2 = new byte[2];
if (stream.Read(r2, 0, 2) != 2)
{
throw (new Exception("Read Error"));
}
string firstByteBinary = Convert.ToString(r2[0], 2); //.PadLeft(8, '0')
string secondByteBinary = Convert.ToString(r2[1], 2); //.PadLeft(8, '0')
int opcode = Convert.ToInt32(firstByteBinary.Substring(4, 4), 2);
ESocketDataType type = ESocketDataType.close;
switch (opcode)
{
case 1: type = ESocketDataType.text; break;
case 2: type = ESocketDataType.binary; break;
case 8: type = ESocketDataType.close; break;
case 9: type = ESocketDataType.ping; break;
case 10: type = ESocketDataType.pong; break;
default: throw (new Exception("unknown data (opcode)"));
}
int payloadLength = r2[1] & 127;
bool isMasked = secondByteBinary[0] == '1';
//if (!isMasked) { close(1002); }
int dataLength = 0;
byte[] mask = null;
if (payloadLength == 126)
{
mask = new byte[6];
if (stream.Read(mask, 0, 6) != 6)
{
throw (new Exception("Error in length"));
}
r2[0] = mask[1];
r2[1] = mask[0];
dataLength = BitConverter.ToInt16(r2, 0);//invert
}
else if (payloadLength == 127)
{
mask = new byte[12];
if (stream.Read(mask, 0, 12) != 12)
{
throw (new Exception("Error in length"));
}
byte[] bl = new byte[8];
for (int x = 0; x < 8; x++)
{
bl[7 - x] = mask[x]; //invert
}
dataLength = (int)BitConverter.ToInt64(bl, 0);
}
else
{
mask = new byte[4];
if (stream.Read(mask, 0, 4) != 4)
{
throw (new Exception("Error in length"));
}
dataLength = payloadLength;
}
byte[] data = new byte[dataLength];
int ix = 0, rest = dataLength, lee = 1;
while (rest > 0 && lee > 0)
{
lee = stream.Read(data, ix, rest); ix += lee; rest -= lee;
}
if (lee == 0 && rest != 0)
{
throw (new Exception("Disconnected!"));
}
if (isMasked)
{
int index_mask = mask.Length - 4;
for (int i = 0; i < dataLength; i++)
{
data[i] = (byte)(data[i] ^ mask[index_mask + (i % 4)]);
}
}
return(new Html5SocketMsg(codec, type, data));
}
