- From: Dan Connolly <connolly@w3.org>
- Date: Thu, 17 Aug 2000 08:24:56 -0500
- To: "Siegel, David" <David.Siegel@dialogic.com>
- CC: "'www-talk@w3.org'" <www-talk@w3.org>
"Siegel, David" wrote: > > In the process of researching how to "ping" a URL to check its validity, a > quick solution of just checking for a string involving "HTTP 404 Error" and > variations of it presented itself as a quick solution. Is there currently a > "default" standard for web servers for 404 errors? Er... yes; if the first 3 bytes of the response message are the ascii codes for '4', '0', and '4', then it's a 404 response. 6.1.1 Status Code and Reason Phrase http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1.1 10.4.5 404 Not Found http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.5 There's no standard for the content of the error message (it doesn't even have to be HTML). You have to look at the HTTP protocol status code. > Is there a specific HTTP > header or META tag I can look for in the page that gets returned when the > page does not exist on the server? (This would probably be more consistent - > if it exists) > > Any advice here would be great!!! > > Thanks, > > David Siegel > mailto:david.siegel@dialogic.com -- Dan Connolly, W3C http://www.w3.org/People/Connolly/ tel:+1-913-491-0501 (office phone as of 27 Apr 2000) mailto:connolly.pager@w3.org?subject=pls%20call%20+1-NNN-NNN-NNNN
Received on Thursday, 17 August 2000 09:25:07 UTC