/// <summary>
/// Parses a specific HTTP header field.
/// </summary>
/// <param name="KeyLower">Lower-case version of field name.</param>
/// <param name="Key">Field name, as it appears in the header.</param>
/// <param name="Value">Unparsed header field value</param>
/// <returns>HTTP header field object, corresponding to the particular field.</returns>
protected virtual HttpField ParseField(string KeyLower, string Key, string Value)
{
switch (KeyLower)
{
case "content-encoding": return(this.contentEncoding = new HttpFieldContentEncoding(Key, Value));
case "content-language": return(this.contentLanguage = new HttpFieldContentLanguage(Key, Value));
case "content-length": return(this.contentLength = new HttpFieldContentLength(Key, Value));
case "content-location": return(this.contentLocation = new HttpFieldContentLocation(Key, Value));
case "content-md5": return(this.contentMD5 = new HttpFieldContentMD5(Key, Value));
case "content-range": return(this.contentRange = new HttpFieldContentRange(Key, Value));
case "content-type": return(this.contentType = new HttpFieldContentType(Key, Value));
case "transfer-encoding": return(this.transferEncoding = new HttpFieldTransferEncoding(Key, Value));
case "via": return(this.via = new HttpFieldVia(Key, Value));
default: return(new HttpField(Key, Value));
}
}
private async Task <bool> BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream is null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (!(TransferEncoding is null))
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryStream();
this.transferEncoding = new ChunkedTransferEncoding(new BinaryOutputStream(this.dataStream), null);
}
else
{
await this.SendResponse(null, null, new HttpException(501, "Not Implemented", "Transfer encoding not implemented."), false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (!(ContentLength is null))
{
long l = ContentLength.ContentLength;
if (l < 0)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Negative content lengths invalid."), false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryStream();
}
this.transferEncoding = new ContentLengthEncoding(new BinaryOutputStream(this.dataStream), l, null);
}
private bool BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream == null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (TransferEncoding != null)
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryFile();
this.transferEncoding = new ChunkedTransferEncoding(this.dataStream, null);
}
else
{
this.SendResponse(null, 501, "Not Implemented", false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (ContentLength != null)
{
long l = ContentLength.ContentLength;
if (l < 0)
{
this.SendResponse(null, 400, "Bad Request", false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryFile();
}
this.transferEncoding = new ContentLengthEncoding(this.dataStream, l, null);
}
else
{
this.SendResponse(null, 411, "Length Required", true);
return(false);
}
}
}
bool Complete = this.transferEncoding.Decode(Data, Offset, NrRead, out int NrAccepted);
if (this.HasSniffers)
{
if (Offset == 0 && NrAccepted == Data.Length)
{
this.ReceiveBinary(Data);
}
else
{
byte[] Data2 = new byte[NrAccepted];
Array.Copy(Data, Offset, Data2, 0, NrAccepted);
this.ReceiveBinary(Data2);
}
}
if (Complete)
{
if (this.transferEncoding.InvalidEncoding)
{
this.SendResponse(null, 400, "Bad Request", false);
return(true);
}
else
{
Offset += NrAccepted;
NrRead -= NrAccepted;
if (!this.RequestReceived())
{
return(false);
}
if (NrRead > 0)
{
return(this.BinaryHeaderReceived(Data, Offset, NrRead));
}
else
{
return(true);
}
}
}
else if (this.dataStream.Position > MaxEntitySize)
{
this.dataStream.Dispose();
this.dataStream = null;
this.SendResponse(null, 413, "Request Entity Too Large", true);
return(false);
}
else
{
return(true);
}
}
private async Task <bool> BinaryDataReceived(byte[] Data, int Offset, int NrRead)
{
if (this.dataStream is null)
{
HttpFieldTransferEncoding TransferEncoding = this.header.TransferEncoding;
if (TransferEncoding != null)
{
if (TransferEncoding.Value == "chunked")
{
this.dataStream = new TemporaryFile();
this.transferEncoding = new ChunkedTransferEncoding(new BinaryOutputStream(this.dataStream), null);
}
else
{
await this.SendResponse(null, null, new HttpException(501, "Not Implemented", "Transfer encoding not implemented."), false);
return(true);
}
}
else
{
HttpFieldContentLength ContentLength = this.header.ContentLength;
if (ContentLength != null)
{
long l = ContentLength.ContentLength;
if (l < 0)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Negative content lengths invalid."), false);
return(true);
}
if (l <= MaxInmemoryMessageSize)
{
this.dataStream = new MemoryStream((int)l);
}
else
{
this.dataStream = new TemporaryFile();
}
this.transferEncoding = new ContentLengthEncoding(new BinaryOutputStream(this.dataStream), l, null);
}
else
{
await this.SendResponse(null, null, new HttpException(411, "Length Required", "Content Length required."), true);
return(false);
}
}
}
ulong DecodingResponse = await this.transferEncoding.DecodeAsync(Data, Offset, NrRead);
int NrAccepted = (int)DecodingResponse;
bool Complete = (DecodingResponse & 0x100000000) != 0;
if (this.HasSniffers)
{
if (Offset == 0 && NrAccepted == Data.Length)
{
this.ReceiveBinary(Data);
}
else
{
byte[] Data2 = new byte[NrAccepted];
Array.Copy(Data, Offset, Data2, 0, NrAccepted);
this.ReceiveBinary(Data2);
}
}
if (Complete)
{
if (this.transferEncoding.InvalidEncoding)
{
await this.SendResponse(null, null, new HttpException(400, "Bad Request", "Invalid transfer encoding."), false);
return(true);
}
else if (this.transferEncoding.TransferError)
{
await this.SendResponse(null, null, new HttpException(500, "Internal Server Error", "Unable to transfer content to resource."), false);
return(true);
}
else
{
Offset += NrAccepted;
NrRead -= NrAccepted;
if (!await this.RequestReceived())
{
return(false);
}
if (NrRead > 0)
{
return(await this.BinaryHeaderReceived(Data, Offset, NrRead));
}
else
{
return(true);
}
}
}
else if (this.dataStream.Position > MaxEntitySize)
{
this.dataStream.Dispose();
this.dataStream = null;
await this.SendResponse(null, null, new HttpException(413, "Request Entity Too Large", "Maximum Entity Size: " + MaxEntitySize.ToString()), true);
return(false);
}
else
{
return(true);
}
}
