RE: Is there a way that I can tell if a web page on anotherweb site has changed. -- WEB400

Subject: RE: Is there a way that I can tell if a web page on anotherweb site has changed.
From: web400@xxxxxxxxxxxxxxxx
Date: Tue, 14 Jun 2005 13:33:21 -0500 (CDT)
List-archive: <http://archive.midrange.com/web400>
List-help: <mailto:web400-request@midrange.com?subject=help>
List-id: Web Enabling the AS400 / iSeries <web400.midrange.com>
List-post: <mailto:web400@midrange.com>
List-subscribe: <http://lists.midrange.com/mailman/listinfo/web400>, <mailto:web400-request@midrange.com?subject=subscribe>
List-unsubscribe: <http://lists.midrange.com/mailman/listinfo/web400>, <mailto:web400-request@midrange.com?subject=unsubscribe>

Hello,

I am using socket methods to make http requests to certain web sites
every hour and I want to alert a user if the web page on another site
changes.  Can anyone tell me an easy way to do this.

Send the "IF-MODIFIED-SINCE" header on the HTTP request. The server willthen only re-send the page if it has been modified since the date/time yousend.


Example:

GET /index.html HTTP/1.1
Host: www.example.com:80
If-Modified-Since: Tue, 14 Jun 2005 12:46:05 GMT

As an Amazon Associate we earn from qualifying purchases.

Follow-Ups:

Re: Is there a way that I can tell if a web page on anotherweb site has changed. , Brad Stone
Re: Is there a way that I can tell if a web page on anotherweb site has changed. , Brad Stone

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.