private static WebSocketFrame readPayloadData(
Stream stream, WebSocketFrame frame
)
{
var exactLen = frame.ExactPayloadLength;
if (exactLen > PayloadData.MaxLength)
{
var msg = "A frame has too long payload length.";
throw new WebSocketException(CloseStatusCode.TooBig, msg);
}
if (exactLen == 0)
{
frame._payloadData = PayloadData.Empty;
return(frame);
}
var len = (long)exactLen;
var bytes = frame._payloadLength < 127
? stream.ReadBytes((int)exactLen)
: stream.ReadBytes(len, 1024);
if (bytes.LongLength != len)
{
var msg = "The payload data of a frame could not be read.";
throw new WebSocketException(msg);
}
frame._payloadData = new PayloadData(bytes, len);
return(frame);
}
private static string print(WebSocketFrame frame)
{
string empty;
byte num = frame._payloadLength;
string str = (num > 125 ? frame.FullPayloadLength.ToString() : string.Empty);
string str1 = BitConverter.ToString(frame._maskingKey);
if (num == 0)
{
empty = string.Empty;
}
else if (num > 125)
{
empty = "---";
}
else
{
empty = (!frame.IsText || frame.IsFragment || frame.IsMasked || frame.IsCompressed ? frame._payloadData.ToString() : frame._payloadData.ApplicationData.UTF8Decode());
}
string str2 = empty;
string str3 = "\r\n FIN: {0}\r\n RSV1: {1}\r\n RSV2: {2}\r\n RSV3: {3}\r\n Opcode: {4}\r\n MASK: {5}\r\n Payload Length: {6}\r\nExtended Payload Length: {7}\r\n Masking Key: {8}\r\n Payload Data: {9}";
return(string.Format(str3, new object[] { frame._fin, frame._rsv1, frame._rsv2, frame._rsv3, frame._opcode, frame._mask, num, str, str1, str2 }));
}
public WebSocketFrame ReadFrame()
{
return(WebSocketFrame.Parse(_innerStream, true));
}
internal MessageEventArgs(WebSocketFrame frame)
{
_opcode = frame.Opcode;
_rawData = frame.PayloadData.ApplicationData;
_data = convertToString(_opcode, _rawData);
}
private static void readHeaderAsync(Stream stream, Action <WebSocketFrame> completed, Action <Exception> error)
{
stream.ReadBytesAsync(2, (byte[] bytes) => completed(WebSocketFrame.processHeader(bytes)), error);
}
private static string dump(WebSocketFrame frame)
{
ulong length = frame.Length;
long num = (long)(length / 4uL);
int num2 = (int)(length % 4uL);
int num3;
string arg5;
if (num < 10000)
{
num3 = 4;
arg5 = "{0,4}";
}
else if (num < 65536)
{
num3 = 4;
arg5 = "{0,4:X}";
}
else if (num < 4294967296L)
{
num3 = 8;
arg5 = "{0,8:X}";
}
else
{
num3 = 16;
arg5 = "{0,16:X}";
}
string arg6 = $"{{0,{num3}}}";
string format = string.Format("\n{0} 01234567 89ABCDEF 01234567 89ABCDEF\n{0}+--------+--------+--------+--------+\\n", arg6);
string lineFmt = $"{arg5}|{{1,8}} {{2,8}} {{3,8}} {{4,8}}|\n";
string format2 = $"{arg6}+--------+--------+--------+--------+";
StringBuilder output = new StringBuilder(64);
Func <Action <string, string, string, string> > func = delegate
{
long lineCnt = 0L;
return(delegate(string arg1, string arg2, string arg3, string arg4)
{
output.AppendFormat(lineFmt, ++lineCnt, arg1, arg2, arg3, arg4);
});
};
output.AppendFormat(format, string.Empty);
Action <string, string, string, string> action = func();
byte[] array = frame.ToByteArray();
for (long num4 = 0L; num4 <= num; num4++)
{
long num5 = num4 * 4;
if (num4 < num)
{
action(Convert.ToString(array[num5], 2).PadLeft(8, '0'), Convert.ToString(array[num5 + 1], 2).PadLeft(8, '0'), Convert.ToString(array[num5 + 2], 2).PadLeft(8, '0'), Convert.ToString(array[num5 + 3], 2).PadLeft(8, '0'));
}
else if (num2 > 0)
{
action(Convert.ToString(array[num5], 2).PadLeft(8, '0'), (num2 < 2) ? string.Empty : Convert.ToString(array[num5 + 1], 2).PadLeft(8, '0'), (num2 != 3) ? string.Empty : Convert.ToString(array[num5 + 2], 2).PadLeft(8, '0'), string.Empty);
}
}
output.AppendFormat(format2, string.Empty);
return(output.ToString());
}
private static WebSocketFrame ProcessHeader(byte[] header)
{
if (header.Length != 2)
{
var msg = "The header part of a frame could not be read.";
throw new WebSocketException(msg);
}
// FIN
var fin = (header[0] & 0x80) == 0x80 ? Fin.Final : Fin.More;
// RSV1
var rsv1 = (header[0] & 0x40) == 0x40 ? Rsv.On : Rsv.Off;
// RSV2
var rsv2 = (header[0] & 0x20) == 0x20 ? Rsv.On : Rsv.Off;
// RSV3
var rsv3 = (header[0] & 0x10) == 0x10 ? Rsv.On : Rsv.Off;
// Opcode
var opcode = (byte)(header[0] & 0x0f);
// MASK
var mask = (header[1] & 0x80) == 0x80 ? Mask.On : Mask.Off;
// Payload Length
var payloadLen = (byte)(header[1] & 0x7f);
if (!opcode.IsSupported())
{
var msg = "A frame has an unsupported opcode.";
throw new WebSocketException(CloseStatusCode.ProtocolError, msg);
}
if (!opcode.IsData() && rsv1 == Rsv.On)
{
var msg = "A non data frame is compressed.";
throw new WebSocketException(CloseStatusCode.ProtocolError, msg);
}
if (opcode.IsControl())
{
if (fin == Fin.More)
{
var msg = "A control frame is fragmented.";
throw new WebSocketException(CloseStatusCode.ProtocolError, msg);
}
if (payloadLen > 125)
{
var msg = "A control frame has too long payload length.";
throw new WebSocketException(CloseStatusCode.ProtocolError, msg);
}
}
var frame = new WebSocketFrame
{
_fin = fin,
_rsv1 = rsv1,
_rsv2 = rsv2,
_rsv3 = rsv3,
_opcode = (Opcode)opcode,
_mask = mask,
_payloadLength = payloadLen
};
return(frame);
}
internal static void Read(Stream stream, bool unmask, Action <WebSocketFrame> completed, Action <Exception> error)
{
WebSocketFrame frame = new WebSocketFrame();
frame.readHeader(stream, unmask, completed, error);
}
private static string dump(WebSocketFrame frame)
{
int num2;
string str1;
ulong length = frame.Length;
long num3 = (long)(length / (long)4);
int num4 = (int)(length % (long)4);
if (num3 < (long)10000)
{
num2 = 4;
str1 = "{0,4}";
}
else if (num3 < (long)65536)
{
num2 = 4;
str1 = "{0,4:X}";
}
else if (num3 >= 4294967296L)
{
num2 = 16;
str1 = "{0,16:X}";
}
else
{
num2 = 8;
str1 = "{0,8:X}";
}
string str2 = string.Format("{{0,{0}}}", num2);
string str3 = string.Format("\r\n{0} 01234567 89ABCDEF 01234567 89ABCDEF\r\n{0}+--------+--------+--------+--------+\\n", str2);
string str4 = string.Format("{0}|{{1,8}} {{2,8}} {{3,8}} {{4,8}}|\n", str1);
string str5 = string.Format("{0}+--------+--------+--------+--------+", str2);
StringBuilder stringBuilder = new StringBuilder(64);
Action <string, string, string, string> action = new Func <Action <string, string, string, string> >(() => {
long num1 = (long)0;
return((string arg1, string arg2, string arg3, string arg4) => {
StringBuilder cSu0024u003cu003e8_locals1 = stringBuilder;
string str = str4;
object[] objArray = new object[5];
long num = num1 + (long)1;
num1 = num;
objArray[0] = num;
objArray[1] = arg1;
objArray[2] = arg2;
objArray[3] = arg3;
objArray[4] = arg4;
cSu0024u003cu003e8_locals1.AppendFormat(str, objArray);
});
})();
stringBuilder.AppendFormat(str3, string.Empty);
byte[] array = frame.ToArray();
for (long i = (long)0; i <= num3; i += (long)1)
{
long num5 = i * (long)4;
if (i < num3)
{
action(Convert.ToString(array[checked ((IntPtr)num5)], 2).PadLeft(8, '0'), Convert.ToString(array[checked ((IntPtr)(num5 + (long)1))], 2).PadLeft(8, '0'), Convert.ToString(array[checked ((IntPtr)(num5 + (long)2))], 2).PadLeft(8, '0'), Convert.ToString(array[checked ((IntPtr)(num5 + (long)3))], 2).PadLeft(8, '0'));
}
else if (num4 > 0)
{
action(Convert.ToString(array[checked ((IntPtr)num5)], 2).PadLeft(8, '0'), (num4 >= 2 ? Convert.ToString(array[checked ((IntPtr)(num5 + (long)1))], 2).PadLeft(8, '0') : string.Empty), (num4 == 3 ? Convert.ToString(array[checked ((IntPtr)(num5 + (long)2))], 2).PadLeft(8, '0') : string.Empty), string.Empty);
}
}
stringBuilder.AppendFormat(str5, string.Empty);
return(stringBuilder.ToString());
}
internal static WebSocketFrame CreatePingFrame(byte[] data, bool mask)
{
WebSocketFrame webSocketFrames = new WebSocketFrame(WebSocketSharp.Fin.Final, WebSocketSharp.Opcode.Ping, new WebSocketSharp.PayloadData(data), false, mask);
return(webSocketFrames);
}
static WebSocketFrame()
{
WebSocketFrame.EmptyPingBytes = WebSocketFrame.CreatePingFrame(false).ToArray();
}
private static WebSocketFrame processHeader(byte[] header)
{
string headerStr = string.Empty;
for (int i = 0; i < header.Length; i++)
{
headerStr += header[i].ToString("x2") + ", ";
}
if (header.Length != 2)
{
throw new WebSocketException(
"The header part of a frame cannot be read from the data source. header = " + headerStr);
}
// FIN
var fin = (header[0] & 0x80) == 0x80 ? Fin.Final : Fin.More;
// RSV1
var rsv1 = (header[0] & 0x40) == 0x40 ? Rsv.On : Rsv.Off;
// RSV2
var rsv2 = (header[0] & 0x20) == 0x20 ? Rsv.On : Rsv.Off;
// RSV3
var rsv3 = (header[0] & 0x10) == 0x10 ? Rsv.On : Rsv.Off;
// Opcode
var opcode = (Opcode)(header[0] & 0x0f);
// MASK
var mask = (header[1] & 0x80) == 0x80 ? Mask.On : Mask.Off;
// Payload Length
var payloadLen = (byte)(header[1] & 0x7f);
// Check if valid header.
var err = isControl(opcode) && payloadLen > 125
? "A control frame has payload data which is greater than the allowable max length."
: isControl(opcode) && fin == Fin.More
? "A control frame is fragmented."
: !isData(opcode) && rsv1 == Rsv.On
? "A non data frame is compressed."
: null;
if (err != null)
{
throw new WebSocketException(CloseStatusCode.ProtocolError, err);
}
var frame = new WebSocketFrame();
frame._fin = fin;
frame._rsv1 = rsv1;
frame._rsv2 = rsv2;
frame._rsv3 = rsv3;
frame._opcode = opcode;
frame._mask = mask;
frame._payloadLength = payloadLen;
return(frame);
}
private static string dump(WebSocketFrame frame)
{
int num4;
string str;
private static WebSocketFrame read(byte[] header, Stream stream, bool unmask)
{
Fin fin = (((header[0] & 0x80) == 128) ? Fin.Final : Fin.More);
Rsv rsv = (((header[0] & 0x40) == 64) ? Rsv.On : Rsv.Off);
Rsv rsv2 = (((header[0] & 0x20) == 32) ? Rsv.On : Rsv.Off);
Rsv rsv3 = (((header[0] & 0x10) == 16) ? Rsv.On : Rsv.Off);
Opcode opcode = (Opcode)(header[0] & 0xFu);
Mask mask = (((header[1] & 0x80) == 128) ? Mask.Mask : Mask.Unmask);
byte b = (byte)(header[1] & 0x7Fu);
string text = ((isControl(opcode) && b > 125) ? "A control frame has a payload data which is greater than the allowable max size." : ((isControl(opcode) && fin == Fin.More) ? "A control frame is fragmented." : ((isData(opcode) || rsv != Rsv.On) ? null : "A non data frame is compressed.")));
if (text != null)
{
throw new WebSocketException(CloseStatusCode.ProtocolError, text);
}
WebSocketFrame webSocketFrame = new WebSocketFrame();
webSocketFrame._fin = fin;
webSocketFrame._rsv1 = rsv;
webSocketFrame._rsv2 = rsv2;
webSocketFrame._rsv3 = rsv3;
webSocketFrame._opcode = opcode;
webSocketFrame._mask = mask;
webSocketFrame._payloadLength = b;
int num = ((b >= 126) ? ((b != 126) ? 8 : 2) : 0);
byte[] array = ((num <= 0) ? new byte[0] : stream.ReadBytes(num));
if (num > 0 && array.Length != num)
{
throw new WebSocketException("The 'Extended Payload Length' of a frame cannot be read from the data source.");
}
webSocketFrame._extPayloadLength = array;
bool flag = mask == Mask.Mask;
byte[] array2 = ((!flag) ? new byte[0] : stream.ReadBytes(4));
if (flag && array2.Length != 4)
{
throw new WebSocketException("The 'Masking Key' of a frame cannot be read from the data source.");
}
webSocketFrame._maskingKey = array2;
ulong num2 = ((b < 126) ? b : ((b != 126) ? array.ToUInt64(ByteOrder.Big) : array.ToUInt16(ByteOrder.Big)));
byte[] array3 = null;
if (num2 != 0)
{
if (b > 126 && num2 > long.MaxValue)
{
throw new WebSocketException(CloseStatusCode.TooBig, "The length of 'Payload Data' of a frame is greater than the allowable max length.");
}
array3 = ((b <= 126) ? stream.ReadBytes((int)num2) : stream.ReadBytes((long)num2, 1024));
if (array3.LongLength != (long)num2)
{
throw new WebSocketException("The 'Payload Data' of a frame cannot be read from the data source.");
}
}
else
{
array3 = new byte[0];
}
webSocketFrame._payloadData = new PayloadData(array3, flag);
if (unmask && flag)
{
webSocketFrame.Unmask();
}
return(webSocketFrame);
}
public void ReadFrameAsync(Action <WebSocketFrame> completed, Action <Exception> error)
{
WebSocketFrame.ParseAsync(_innerStream, true, completed, error);
}
public bool WriteFrame(WebSocketFrame frame)
{
return(Write(frame.ToByteArray()));
}
public void Print(bool dumped)
{
Console.WriteLine((dumped ? WebSocketFrame.dump(this) : WebSocketFrame.print(this)));
}
private static WebSocketFrame read(byte[] header, Stream stream, bool unmask)
{
/* Header */
// FIN
var fin = (header[0] & 0x80) == 0x80 ? Fin.Final : Fin.More;
// RSV1
var rsv1 = (header[0] & 0x40) == 0x40 ? Rsv.On : Rsv.Off;
// RSV2
var rsv2 = (header[0] & 0x20) == 0x20 ? Rsv.On : Rsv.Off;
// RSV3
var rsv3 = (header[0] & 0x10) == 0x10 ? Rsv.On : Rsv.Off;
// Opcode
var opcode = (Opcode)(header[0] & 0x0f);
// MASK
var mask = (header[1] & 0x80) == 0x80 ? Mask.Mask : Mask.Unmask;
// Payload Length
var payloadLen = (byte)(header[1] & 0x7f);
// Check if valid header
var err = isControl(opcode) && payloadLen > 125
? "A control frame has a payload data which is greater than the allowable max size."
: isControl(opcode) && fin == Fin.More
? "A control frame is fragmented."
: !isData(opcode) && rsv1 == Rsv.On
? "A non data frame is compressed."
: null;
if (err != null)
{
throw new WebSocketException(CloseStatusCode.ProtocolError, err);
}
var frame = new WebSocketFrame();
frame._fin = fin;
frame._rsv1 = rsv1;
frame._rsv2 = rsv2;
frame._rsv3 = rsv3;
frame._opcode = opcode;
frame._mask = mask;
frame._payloadLength = payloadLen;
/* Extended Payload Length */
var size = payloadLen < 126
? 0
: payloadLen == 126
? 2
: 8;
var extPayloadLen = size > 0 ? stream.ReadBytes(size) : new byte[0];
if (size > 0 && extPayloadLen.Length != size)
{
throw new WebSocketException(
"The 'Extended Payload Length' of a frame cannot be read from the data source.");
}
frame._extPayloadLength = extPayloadLen;
/* Masking Key */
var masked = mask == Mask.Mask;
var maskingKey = masked ? stream.ReadBytes(4) : new byte[0];
if (masked && maskingKey.Length != 4)
{
throw new WebSocketException(
"The 'Masking Key' of a frame cannot be read from the data source.");
}
frame._maskingKey = maskingKey;
/* Payload Data */
ulong len = payloadLen < 126
? payloadLen
: payloadLen == 126
? extPayloadLen.ToUInt16(ByteOrder.Big)
: extPayloadLen.ToUInt64(ByteOrder.Big);
byte[] data = null;
if (len > 0)
{
// Check if allowable max length.
if (payloadLen > 126 && len > PayloadData.MaxLength)
{
throw new WebSocketException(
CloseStatusCode.TooBig,
"The length of 'Payload Data' of a frame is greater than the allowable max length.");
}
data = payloadLen > 126
? stream.ReadBytes((long)len, 1024)
: stream.ReadBytes((int)len);
if (data.LongLength != (long)len)
{
throw new WebSocketException(
"The 'Payload Data' of a frame cannot be read from the data source.");
}
}
else
{
data = new byte[0];
}
frame._payloadData = new PayloadData(data, masked);
if (unmask && masked)
{
frame.Unmask();
}
return(frame);
}
public string PrintToString(bool dumped)
{
return(dumped ? WebSocketFrame.dump(this) : WebSocketFrame.print(this));
}
private static string Dump(WebSocketFrame frame)
{
var len = frame.Length;
var cnt = (long)(len / 4);
var rem = (int)(len % 4);
int cntDigit;
string cntFmt;
if (cnt < 10000)
{
cntDigit = 4;
cntFmt = "{0,4}";
}
else if (cnt < 0x010000)
{
cntDigit = 4;
cntFmt = "{0,4:X}";
}
else if (cnt < 0x0100000000)
{
cntDigit = 8;
cntFmt = "{0,8:X}";
}
else
{
cntDigit = 16;
cntFmt = "{0,16:X}";
}
var spFormat = String.Format("{{0,{0}}}", cntDigit);
var headerFormat = String.Format(
@"
{0} 01234567 89ABCDEF 01234567 89ABCDEF
{0}+--------+--------+--------+--------+\n", spFormat);
var lineFormat = String.Format(
"{0}|{{1,8}} {{2,8}} {{3,8}} {{4,8}}|\n", cntFmt
);
var footerFmt = String.Format(
"{0}+--------+--------+--------+--------+", spFormat
);
var buff = new StringBuilder(64);
Action <string, string, string, string> linePrinter()
{
long lineCnt = 0;
return((arg1, arg2, arg3, arg4) =>
{
buff.AppendFormat(lineFormat, ++lineCnt, arg1, arg2, arg3, arg4);
});
}
var printLine = linePrinter();
var bytes = frame.ToArray();
buff.AppendFormat(headerFormat, String.Empty);
for (long i = 0; i <= cnt; i++)
{
var j = i * 4;
if (i < cnt)
{
printLine(
Convert.ToString(bytes[j], 2).PadLeft(8, '0'),
Convert.ToString(bytes[j + 1], 2).PadLeft(8, '0'),
Convert.ToString(bytes[j + 2], 2).PadLeft(8, '0'),
Convert.ToString(bytes[j + 3], 2).PadLeft(8, '0')
);
continue;
}
if (rem > 0)
{
printLine(
Convert.ToString(bytes[j], 2).PadLeft(8, '0'),
rem >= 2
? Convert.ToString(bytes[j + 1], 2).PadLeft(8, '0')
: String.Empty,
rem == 3
? Convert.ToString(bytes[j + 2], 2).PadLeft(8, '0')
: String.Empty,
String.Empty
);
}
}
buff.AppendFormat(footerFmt, String.Empty);
return(buff.ToString());
}
private static WebSocketFrame readHeader(Stream stream)
{
return(WebSocketFrame.processHeader(stream.ReadBytes(2)));
}
internal MessageEventArgs(WebSocketFrame frame)
{
_opcode = frame.Opcode;
_rawData = frame.PayloadData.ApplicationData;
}
private static WebSocketFrame parse(byte [] header, Stream stream, bool unmask)
{
/* Header */
// FIN
var fin = (header [0] & 0x80) == 0x80 ? Fin.Final : Fin.More;
// RSV1
var rsv1 = (header [0] & 0x40) == 0x40 ? Rsv.On : Rsv.Off;
// RSV2
var rsv2 = (header [0] & 0x20) == 0x20 ? Rsv.On : Rsv.Off;
// RSV3
var rsv3 = (header [0] & 0x10) == 0x10 ? Rsv.On : Rsv.Off;
// Opcode
var opcode = (Opcode)(header [0] & 0x0f);
// MASK
var mask = (header [1] & 0x80) == 0x80 ? Mask.Mask : Mask.Unmask;
// Payload Length
var payloadLen = (byte)(header [1] & 0x7f);
// Check if correct frame.
var incorrect = isControl(opcode) && fin == Fin.More
? "A control frame is fragmented."
: !isData(opcode) && rsv1 == Rsv.On
? "A non data frame is compressed."
: null;
if (incorrect != null)
{
throw new WebSocketException(CloseStatusCode.IncorrectData, incorrect);
}
// Check if consistent frame.
if (isControl(opcode) && payloadLen > 125)
{
throw new WebSocketException(
CloseStatusCode.InconsistentData,
"The length of payload data of a control frame is greater than 125 bytes.");
}
var frame = new WebSocketFrame();
frame._fin = fin;
frame._rsv1 = rsv1;
frame._rsv2 = rsv2;
frame._rsv3 = rsv3;
frame._opcode = opcode;
frame._mask = mask;
frame._payloadLength = payloadLen;
/* Extended Payload Length */
var size = payloadLen < 126
? 0
: payloadLen == 126
? 2
: 8;
var extPayloadLen = size > 0 ? stream.ReadBytes(size) : new byte [0];
if (size > 0 && extPayloadLen.Length != size)
{
throw new WebSocketException(
"The 'Extended Payload Length' of a frame cannot be read from the data source.");
}
frame._extPayloadLength = extPayloadLen;
/* Masking Key */
var masked = mask == Mask.Mask;
var maskingKey = masked ? stream.ReadBytes(4) : new byte [0];
if (masked && maskingKey.Length != 4)
{
throw new WebSocketException(
"The 'Masking Key' of a frame cannot be read from the data source.");
}
frame._maskingKey = maskingKey;
/* Payload Data */
ulong len = payloadLen < 126
? payloadLen
: payloadLen == 126
? extPayloadLen.ToUInt16(ByteOrder.Big)
: extPayloadLen.ToUInt64(ByteOrder.Big);
byte [] data = null;
if (len > 0)
{
// Check if allowable payload data length.
if (payloadLen > 126 && len > PayloadData.MaxLength)
{
throw new WebSocketException(
CloseStatusCode.TooBig,
"The length of 'Payload Data' of a frame is greater than the allowable length.");
}
data = payloadLen > 126
? stream.ReadBytes((long)len, 1024)
: stream.ReadBytes((int)len);
if (data.LongLength != (long)len)
{
throw new WebSocketException(
"The 'Payload Data' of a frame cannot be read from the data source.");
}
}
else
{
data = new byte [0];
}
Debug.Log("WebSocketFrame parse is : data: " + System.Text.Encoding.Default.GetString(data));
var payload = new PayloadData(data, masked);
if (masked && unmask)
{
payload.Mask(maskingKey);
frame._mask = Mask.Unmask;
frame._maskingKey = new byte [0];
}
frame._payloadData = payload;
return(frame);
}
