HttpWebRequest invalid contentlength

Question

I need to get content length in order to tell my app where the buffer ends. The problem is that httpwebresponse.ContentLength returns -1 even though Content-Length header is pre

Answer 1

-1 isn't an invalid value of the ContentLength property. I assume you mean the ContentLength property of the response is -1... asking the request what the length is would be non-sensical. Even so, it's perfectly valid:

The ContentLength property contains the value of the Content-Length header returned with the response. If the Content-Length header is not set in the response, ContentLength is set to the value -1.

If the body length is 1850, that suggests it's using chunked transfer encoding. But that should be transparent to you - just keep reading from the response stream until the end. If you're using .NET 4, it's dead easy - just create a MemoryStream and use Stream.CopyTo to copy the data to that MemoryStream.