The routine needs to establish if the URL is valid before proceeding. If it's not valid then it needs to query a website for a new URL and store that in a database.
Most of the time the URL never changes, but it can do occasionally. It's not so important to update the URL this time around if there is a slow connection. It will be checked again sometime. I think a connect timeout should indicate a valid URL as this means winsock didn't produce a socket error, which likely means the web server does exist but is too busy to respond, and we'll assume it's still valid. I still need to consider suitable timeout settings. The faster the better. Ross. From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] On Behalf Of Jolyon Smith Sent: Monday, 13 December 2010 4:28 PM To: 'NZ Borland Developers Group - Delphi List' Subject: Re: [DUG] Indy ConnectTimeout/ReadTimeout recomendations The question is how quickly the web site is likely to respond, not how fat your pipe connecting to it is. 3 seconds could easily be nowhere near long enough if the server is under heavy load. You say you don't want to "delay the routine" if the web site is down, but you presumably don't wish to abort the routine just because the web site is a bit slow to respond. Depending on what the potentially-delayed-routine in question is doing, perhaps you could do your URL check in a background thread ? From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] On Behalf Of Ross Levis Sent: Monday, 13 December 2010 16:19 To: 'NZ Borland Developers Group - Delphi List' Subject: [DUG] Indy ConnectTimeout/ReadTimeout recomendations I'm after minimum recommendations for ConnectTimeout and ReadTimeout for connecting to an HTTP URL. Assuming a DSL internet connection, could these be say 3 seconds each and not likely to abort too early in most cases? I'm executing HTTP.Head to determine if a URL is valid but I don't want to delay the routine too much if the website is down. Thanks.
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