RE: Re: Link checking (only)

 my name is gerrit and I received this message from you I think my name is 
standing on any mailing-list!!!! Can you help me and tell me what I can do not to 
receive these letters anymore, I would be very thankful if you could describe me 
how I can Unsubscribe from the list where I Recwived for example your letter and 
even much other letters!!!!
this I received:
Walter Ian Kaye writes:
> Is there a standard way to check the existence of a URL resource without
> actually downloading it?

You can use the HEAD request instead of GET:

>telnet 80   #telnet to port 80
Connected to
Escape character is '^]'.
HEAD / HTTP/1.0                   #syntax is "Method Request-URI HTTP-Version"
                                  #extra newline to signal end of request
HTTP/1.0 200 OK                   #response from server starts here
Date: Mon, 12 May 1997 20:33:17 GMT
Server: BESTWWWD/1.0
MIME-version: 1.0
Content-type: text/html

Connection closed by foreign host.

> Hmm, that brings up another question: How does one find out what
> commands are supported by different web servers?

The HTTP 1.0 request methods are GET, POST, and HEAD (see  HTTP 1.1 defines


  = J-F Pitot de La Beaujardiere

Received on Monday, 12 May 1997 23:16:08 UTC