ContentType detection without full downloading

[Tamir Khason]

'm using HttpWebRequest/Response to get content type of urls (a lot of them)
It takes a while, so is it possible to tell to request/response just get a
content type (download only headers) ?

TNX

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Ian Griffiths [C# MVP]]

"Tamir Khason" wrote:

'm using HttpWebRequest/Response to get content type of urls (a lot of
them)
It takes a while, so is it possible to tell to request/response just get a
content type (download only headers) ?

HTTP defines a 'HEAD' verb for just this purpose. The meaning of the 'HEAD'
verb is basically "Please show me all the headers you would have given me if
I'd done a GET for this URL." So something like this:

HttpWebRequest req = (HttpWebRequest) WebRequest.Create(http://foo/bar);
req.Method = "HEAD";

...
The one caveat is that you sometimes find that HEAD isn't supported. Most
web sites support it, but it's occasionally broken, so you might need to
fall back to a normal GET in failure cases.
--
Ian Griffiths - http://www.interact-sw.co.uk/iangblog/
DevelopMentor - http://www.develop.com/

[Tamir Khason]

It's just what I need, Thank you !

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

"Ian Griffiths [C# MVP]" <ia*************@nospam.nospam> wrote in message
news:e2**************@TK2MSFTNGP15.phx.gbl...

"Tamir Khason" wrote:

'm using HttpWebRequest/Response to get content type of urls (a lot of
them)
It takes a while, so is it possible to tell to request/response just get
a content type (download only headers) ?

HTTP defines a 'HEAD' verb for just this purpose. The meaning of the
'HEAD' verb is basically "Please show me all the headers you would have
given me if I'd done a GET for this URL." So something like this:

HttpWebRequest req = (HttpWebRequest) WebRequest.Create(http://foo/bar);
req.Method = "HEAD";

...
The one caveat is that you sometimes find that HEAD isn't supported. Most
web sites support it, but it's occasionally broken, so you might need to
fall back to a normal GET in failure cases.
--
Ian Griffiths - http://www.interact-sw.co.uk/iangblog/
DevelopMentor - http://www.develop.com/