public int Decode(byte[] bytes, int offset, int size)
{
int num2;
DecoderHelper.ValidateSize(size);
try
{
int num;
FramingRecordType type;
switch (this.currentState)
{
case State.ReadingViaRecord:
type = (FramingRecordType)bytes[offset];
base.ValidateRecordType(FramingRecordType.Via, type);
num = 1;
this.viaDecoder.Reset();
this.currentState = State.ReadingViaString;
goto Label_0148;
case State.ReadingViaString:
num = this.viaDecoder.Decode(bytes, offset, size);
if (this.viaDecoder.IsValueDecoded)
{
this.currentState = State.ReadingContentTypeRecord;
}
goto Label_0148;
case State.ReadingContentTypeRecord:
type = (FramingRecordType)bytes[offset];
if (type != FramingRecordType.KnownEncoding)
{
break;
}
num = 1;
this.currentState = State.ReadingContentTypeByte;
goto Label_0148;
case State.ReadingContentTypeString:
num = this.contentTypeDecoder.Decode(bytes, offset, size);
if (this.contentTypeDecoder.IsValueDecoded)
{
this.currentState = State.Start;
this.contentType = this.contentTypeDecoder.Value;
}
goto Label_0148;
case State.ReadingContentTypeByte:
this.contentType = ContentTypeStringDecoder.GetString((FramingEncodingType)bytes[offset]);
num = 1;
this.currentState = State.Start;
goto Label_0148;
case State.Start:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(new InvalidDataException(System.ServiceModel.SR.GetString("FramingAtEnd"))));
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(new InvalidDataException(System.ServiceModel.SR.GetString("InvalidDecoderStateMachine"))));
}
base.ValidateRecordType(FramingRecordType.ExtensibleEncoding, type);
num = 1;
this.contentTypeDecoder.Reset();
this.currentState = State.ReadingContentTypeString;
Label_0148:
base.StreamPosition += num;
num2 = num;
}
catch (InvalidDataException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(exception));
}
return(num2);
}
public ServerSingletonDecoder(long streamPosition, int maxViaLength, int maxContentTypeLength) : base(streamPosition)
{
this.viaDecoder = new ViaStringDecoder(maxViaLength);
this.contentTypeDecoder = new ContentTypeStringDecoder(maxContentTypeLength);
this.currentState = State.ReadingViaRecord;
}
public ServerSingletonSizedDecoder(long streamPosition, int maxViaLength, int maxContentTypeLength) : base(streamPosition)
{
this.viaDecoder = new ViaStringDecoder(maxViaLength);
this.contentTypeDecoder = new ContentTypeStringDecoder(maxContentTypeLength);
this.currentState = State.ReadingViaRecord;
}
public int Decode(byte[] bytes, int offset, int size)
{
int num2;
DecoderHelper.ValidateSize(size);
try
{
int envelopeBytesNeeded;
FramingRecordType type;
switch (this.currentState)
{
case State.ReadingViaRecord:
type = (FramingRecordType)bytes[offset];
base.ValidateRecordType(FramingRecordType.Via, type);
envelopeBytesNeeded = 1;
this.viaDecoder.Reset();
this.currentState = State.ReadingViaString;
goto Label_0312;
case State.ReadingViaString:
envelopeBytesNeeded = this.viaDecoder.Decode(bytes, offset, size);
if (this.viaDecoder.IsValueDecoded)
{
this.currentState = State.ReadingContentTypeRecord;
}
goto Label_0312;
case State.ReadingContentTypeRecord:
type = (FramingRecordType)bytes[offset];
if (type != FramingRecordType.KnownEncoding)
{
break;
}
envelopeBytesNeeded = 1;
this.currentState = State.ReadingContentTypeByte;
goto Label_0312;
case State.ReadingContentTypeString:
envelopeBytesNeeded = this.contentTypeDecoder.Decode(bytes, offset, size);
if (this.contentTypeDecoder.IsValueDecoded)
{
this.currentState = State.PreUpgradeStart;
this.contentType = this.contentTypeDecoder.Value;
}
goto Label_0312;
case State.ReadingContentTypeByte:
this.contentType = ContentTypeStringDecoder.GetString((FramingEncodingType)bytes[offset]);
envelopeBytesNeeded = 1;
this.currentState = State.PreUpgradeStart;
goto Label_0312;
case State.PreUpgradeStart:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingUpgradeRecord;
goto Label_0312;
case State.ReadingUpgradeRecord:
type = (FramingRecordType)bytes[offset];
if (type != FramingRecordType.UpgradeRequest)
{
goto Label_0171;
}
envelopeBytesNeeded = 1;
this.contentTypeDecoder.Reset();
this.currentState = State.ReadingUpgradeString;
goto Label_0312;
case State.ReadingUpgradeString:
envelopeBytesNeeded = this.contentTypeDecoder.Decode(bytes, offset, size);
if (this.contentTypeDecoder.IsValueDecoded)
{
this.currentState = State.UpgradeRequest;
this.upgrade = this.contentTypeDecoder.Value;
}
goto Label_0312;
case State.UpgradeRequest:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingUpgradeRecord;
goto Label_0312;
case State.ReadingPreambleEndRecord:
type = (FramingRecordType)bytes[offset];
base.ValidateRecordType(FramingRecordType.PreambleEnd, type);
envelopeBytesNeeded = 1;
this.currentState = State.Start;
goto Label_0312;
case State.Start:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingEndRecord;
goto Label_0312;
case State.ReadingEnvelopeRecord:
base.ValidateRecordType(FramingRecordType.SizedEnvelope, (FramingRecordType)bytes[offset]);
envelopeBytesNeeded = 1;
this.currentState = State.ReadingEnvelopeSize;
this.sizeDecoder.Reset();
goto Label_0312;
case State.ReadingEnvelopeSize:
envelopeBytesNeeded = this.sizeDecoder.Decode(bytes, offset, size);
if (this.sizeDecoder.IsValueDecoded)
{
this.currentState = State.EnvelopeStart;
this.envelopeSize = this.sizeDecoder.Value;
this.envelopeBytesNeeded = this.envelopeSize;
}
goto Label_0312;
case State.EnvelopeStart:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingEnvelopeBytes;
goto Label_0312;
case State.ReadingEnvelopeBytes:
envelopeBytesNeeded = size;
if (envelopeBytesNeeded > this.envelopeBytesNeeded)
{
envelopeBytesNeeded = this.envelopeBytesNeeded;
}
this.envelopeBytesNeeded -= envelopeBytesNeeded;
if (this.envelopeBytesNeeded == 0)
{
this.currentState = State.EnvelopeEnd;
}
goto Label_0312;
case State.EnvelopeEnd:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingEndRecord;
goto Label_0312;
case State.ReadingEndRecord:
type = (FramingRecordType)bytes[offset];
if (type != FramingRecordType.End)
{
goto Label_020C;
}
envelopeBytesNeeded = 1;
this.currentState = State.End;
goto Label_0312;
case State.End:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(new InvalidDataException(System.ServiceModel.SR.GetString("FramingAtEnd"))));
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(new InvalidDataException(System.ServiceModel.SR.GetString("InvalidDecoderStateMachine"))));
}
base.ValidateRecordType(FramingRecordType.ExtensibleEncoding, type);
envelopeBytesNeeded = 1;
this.contentTypeDecoder.Reset();
this.currentState = State.ReadingContentTypeString;
goto Label_0312;
Label_0171:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingPreambleEndRecord;
goto Label_0312;
Label_020C:
envelopeBytesNeeded = 0;
this.currentState = State.ReadingEnvelopeRecord;
Label_0312:
base.StreamPosition += envelopeBytesNeeded;
num2 = envelopeBytesNeeded;
}
catch (InvalidDataException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(base.CreateException(exception));
}
return(num2);
}