public override int ReadByte()
{
if (length - position <= 0)
{
return(-1);
}
if (bufferContext.Count == 0)
{
bufferContext.Fill().Wait();
}
if (bufferContext.Count == 0)
{
return(-1);
}
else
{
position++;
bufferContext.Count--;
return(bufferContext.Buffer[bufferContext.Offset++]);
}
}
public static async Task <bool> ReadHeadersAsync(BufferContext bufferContext, MemoryStream stringBuffer, Dictionary <string, string> headers)
{
bool cr = false;
string line = null;
while (true)
{
// if needed, fill the buffer
if (bufferContext.Count <= 0)
{
await bufferContext.Fill();
}
if (bufferContext.Count <= 0)
{
return(false);
}
// read a line
if (ReadLine(bufferContext, stringBuffer, ref cr))
{
string line2 = Encoding.UTF8.GetString(stringBuffer.GetBuffer(), 0, (int)stringBuffer.Length);
stringBuffer.SetLength(0);
// multi lines header
if ((line != null) && (line2.StartsWith(" ") || line2.StartsWith("\t")))
{
line += line2;
}
// new header
else
{
// flush previous line
if (line != null)
{
int pos = line.IndexOf(':');
if ((pos == -1) || (pos == 0))
{
throw new Exception("Invalid mime header line. Missing ':'");
}
string key = line.Substring(0, pos).ToLower();
string content = line.Substring(pos + 2, line.Length - (pos + 2));
headers[key] = HttpUtility.QuotedPrintableDecode(content);
}
line = line2;
if (line == String.Empty)
{
return(true);
}
}
}
}
}
public static async Task <string> ReadLineAsync(BufferContext bufferContext, MemoryStream stringBuffer)
{
bool cr = false;
while (!ReadLine(bufferContext, stringBuffer, ref cr))
{
await bufferContext.Fill();
if (bufferContext.Count == 0)
{
return(null);
}
}
return(Encoding.UTF8.GetString(stringBuffer.GetBuffer(), 0, (int)stringBuffer.Length));
}
public override int ReadByte()
{
if (end)
{
return(-1);
}
while (true)
{
if (chunkPos < chunkLength)
{
if (bufferContext.Count == 0)
{
bufferContext.Fill().Wait();
}
if (bufferContext.Count == 0)
{
end = true;
return(-1);
}
bufferContext.Offset++;
bufferContext.Count--;
position++;
chunkPos++;
return(bufferContext.Buffer[bufferContext.Offset - 1]);
}
// load a new chunk
else
{
stringBuffer.SetLength(0);
Task <string> task = HttpUtility.ReadLineAsync(bufferContext, stringBuffer);
task.Wait();
string chunkLine = task.Result;
if (!firstChunk)
{
if (chunkLine != String.Empty)
{
throw new Exception("Invalid chunked Stream");
}
stringBuffer.SetLength(0);
task = HttpUtility.ReadLineAsync(bufferContext, stringBuffer);
task.Wait();
chunkLine = task.Result;
}
else
{
firstChunk = false;
}
if (chunkLine == null)
{
throw new Exception("Invalid chunked Stream");
}
chunkPos = 0;
chunkLength = Int32.Parse(chunkLine, System.Globalization.NumberStyles.HexNumber);
if (chunkLength == 0)
{
end = true;
return(-1);
}
}
}
}
