Funny bytes between HTTP header and page content ?

[Jochen Müller]

Just a short question: With a network sniffer and a hex editor I looked at
the pages coming from my ASP.NET environment and I saw some strange bytes
between header and the page content:

0d 0a 0d 0a ef bb bf 0d 0a

That means that there are two CR/LF , then 3 funny bytes and again a CR/LF.

I also implemented a response filter to look at the byte stream before
sending and the page content starts there just with one CR/LF.

Can anybody tell me what those bytes mean?

Thanks!

[Jochen Müller]

Ok, I saw that it happens only when I activated my own Response.Filter. But
within this filter I only override the write function like this:

public override void Write(byte[] buffer, int offset, int count)
{
MemoryStream ms = new MemoryStream(buffer, offset, count, false);
StreamReader sr = new StreamReader(ms, Encoding.UTF8);
string strPageContent = sr.ReadToEnd();
streamWriter.Write(strPageContent);
streamWriter.Flush();
}
What goes wrong here?
It always adds those funny bytes to the output...


"Jochen Müller" <jo*****************@hotmail.com> schrieb im Newsbeitrag
news:%2****************@TK2MSFTNGP09.phx.gbl...

Just a short question: With a network sniffer and a hex editor I looked at
the pages coming from my ASP.NET environment and I saw some strange bytes
between header and the page content:

0d 0a 0d 0a ef bb bf 0d 0a

That means that there are two CR/LF , then 3 funny bytes and again a
CR/LF.

I also implemented a response filter to look at the byte stream before
sending and the page content starts there just with one CR/LF.

Can anybody tell me what those bytes mean?

Thanks!

[Robert Rolls]

http://www.dotnet247.com/247reference/msgs/6/34399.aspx

"Jochen Müller" <jo*****************@hotmail.com> wrote in message
news:OC**************@TK2MSFTNGP10.phx.gbl...

Ok, I saw that it happens only when I activated my own Response.Filter.
But within this filter I only override the write function like this:

public override void Write(byte[] buffer, int offset, int count)
{
MemoryStream ms = new MemoryStream(buffer, offset, count, false);
StreamReader sr = new StreamReader(ms, Encoding.UTF8);
string strPageContent = sr.ReadToEnd();
streamWriter.Write(strPageContent);
streamWriter.Flush();
}
What goes wrong here?
It always adds those funny bytes to the output...


"Jochen Müller" <jo*****************@hotmail.com> schrieb im Newsbeitrag
news:%2****************@TK2MSFTNGP09.phx.gbl...

Just a short question: With a network sniffer and a hex editor I looked
at the pages coming from my ASP.NET environment and I saw some strange
bytes between header and the page content:

0d 0a 0d 0a ef bb bf 0d 0a

That means that there are two CR/LF , then 3 funny bytes and again a
CR/LF.

I also implemented a response filter to look at the byte stream before
sending and the page content starts there just with one CR/LF.

Can anybody tell me what those bytes mean?

Thanks!

[Joerg Jooss]

Robert Rolls wrote:

http://www.dotnet247.com/247reference/msgs/6/34399.aspx

Hmm... the analysis is correct (it's a UTF-8 BOM), but the solution is
nonsense. There are UTF8Encoding constructors that suppress the BOM in
the BCL.

Cheers,
--
http://www.joergjooss.de
mailto:ne********@joergjooss.de