private ChunkStream.State ReadTrailer(byte[] buffer, ref int offset, int size)
{
if (this.trailerState == 2 && (ushort)buffer[offset] == 13 && this.saved.Length == 0)
{
offset++;
if (offset < size && (ushort)buffer[offset] == 10)
{
offset++;
return(ChunkStream.State.None);
}
offset--;
}
int num = this.trailerState;
string text = "\r\n\r";
while (offset < size && num < 4)
{
char c = (char)buffer[offset++];
if ((num == 0 || num == 2) && c == '\r')
{
num++;
}
else if ((num == 1 || num == 3) && c == '\n')
{
num++;
}
else if (num > 0)
{
this.saved.Append(text.Substring(0, (this.saved.Length != 0) ? num : (num - 2)));
num = 0;
if (this.saved.Length > 4196)
{
ChunkStream.ThrowProtocolViolation("Error reading trailer (too long).");
}
}
}
if (num < 4)
{
this.trailerState = num;
if (offset < size)
{
ChunkStream.ThrowProtocolViolation("Error reading trailer.");
}
return(ChunkStream.State.Trailer);
}
StringReader stringReader = new StringReader(this.saved.ToString());
string text2;
while ((text2 = stringReader.ReadLine()) != null && text2 != string.Empty)
{
this.headers.Add(text2);
}
return(ChunkStream.State.None);
}
private ChunkStream.State ReadCRLF(byte[] buffer, ref int offset, int size)
{
if (!this.sawCR)
{
if ((ushort)buffer[offset++] != 13)
{
ChunkStream.ThrowProtocolViolation("Expecting \\r");
}
this.sawCR = true;
if (offset == size)
{
return(ChunkStream.State.BodyFinished);
}
}
if (this.sawCR && (ushort)buffer[offset++] != 10)
{
ChunkStream.ThrowProtocolViolation("Expecting \\n");
}
return(ChunkStream.State.None);
}
private ChunkStream.State GetChunkSize(byte[] buffer, ref int offset, int size)
{
char c = '\0';
while (offset < size)
{
c = (char)buffer[offset++];
if (c == '\r')
{
if (this.sawCR)
{
ChunkStream.ThrowProtocolViolation("2 CR found");
}
this.sawCR = true;
}
else
{
if (this.sawCR && c == '\n')
{
break;
}
if (c == ' ')
{
this.gotit = true;
}
if (!this.gotit)
{
this.saved.Append(c);
}
if (this.saved.Length > 20)
{
ChunkStream.ThrowProtocolViolation("chunk size too long.");
}
}
}
if (!this.sawCR || c != '\n')
{
if (offset < size)
{
ChunkStream.ThrowProtocolViolation("Missing \\n");
}
try
{
if (this.saved.Length > 0)
{
this.chunkSize = int.Parse(ChunkStream.RemoveChunkExtension(this.saved.ToString()), NumberStyles.HexNumber);
}
}
catch (Exception)
{
ChunkStream.ThrowProtocolViolation("Cannot parse chunk size.");
}
return(ChunkStream.State.None);
}
this.chunkRead = 0;
try
{
this.chunkSize = int.Parse(ChunkStream.RemoveChunkExtension(this.saved.ToString()), NumberStyles.HexNumber);
}
catch (Exception)
{
ChunkStream.ThrowProtocolViolation("Cannot parse chunk size.");
}
if (this.chunkSize == 0)
{
this.trailerState = 2;
return(ChunkStream.State.Trailer);
}
return(ChunkStream.State.Body);
}