/// <exception cref="Org.Apache.Http.HttpException"></exception>
public override long DetermineLength(HttpMessage message)
{
Args.NotNull(message, "HTTP message");
// Although Transfer-Encoding is specified as a list, in practice
// it is either missing or has the single value "chunked". So we
// treat it as a single-valued header here.
Header transferEncodingHeader = message.GetFirstHeader(HTTP.TransferEncoding);
if (transferEncodingHeader != null)
{
string s = transferEncodingHeader.GetValue();
if (Sharpen.Runtime.EqualsIgnoreCase(HTTP.ChunkCoding, s))
{
if (message.GetProtocolVersion().LessEquals(HttpVersion.Http10))
{
throw new ProtocolException("Chunked transfer encoding not allowed for " + message
.GetProtocolVersion());
}
return(Chunked);
}
else
{
if (Sharpen.Runtime.EqualsIgnoreCase(HTTP.IdentityCoding, s))
{
return(Identity);
}
else
{
throw new ProtocolException("Unsupported transfer encoding: " + s);
}
}
}
Header contentLengthHeader = message.GetFirstHeader(HTTP.ContentLen);
if (contentLengthHeader != null)
{
string s = contentLengthHeader.GetValue();
try
{
long len = long.Parse(s);
if (len < 0)
{
throw new ProtocolException("Negative content length: " + s);
}
return(len);
}
catch (FormatException)
{
throw new ProtocolException("Invalid content length: " + s);
}
}
return(this.implicitLen);
}
