BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  help tracking server problem?          BorlandTalk.com Forum Index -> Delphi Internet Winsock View previous topic :: View next topic   Author Message klint gore Guest Posted: Wed Jan 21, 2004 9:26 pm    Post subject: help tracking server problem? Anyone know of a good guide to debugging servers? I've converted a smtp server based on winshoes7 to indy 9 (.0.11 if it matters) and I've got a problem with the server running doconnect then disconnecting. The idtcpserver doconnect has been overwridden to just writeln the welcome message. It appears to happen after running for a while (usually more than 12hrs) and while under load (usually >100 threads). It doesnt appear to be leaking as the memory allocation and handle counts (in the task manager) stay about the same in ratio to the number of threads. I can't duplicate it on my pc's (which would be a lot easier to debug) but I have users that can hit it at least once a day. I've added a debug log to try and track some things down. There are some occurances of a EIdReadLnMaxLineLengthExceded exception near the time of going into the error state. Has anyone seen this exception cause any problems? It may be nothing as there are other instances of it that don't cause a problem. My latest update is to add the onexception handler and write out anything except eabort and eidsilentexception to the debug log. I'm also logging doconnect completing, doexecute starting and finishing, and some state information if an exception occurs in doexecute. Complete source is available if required. thanks, klint. Back to top Simon Guest Posted: Thu Jan 22, 2004 5:18 pm    Post subject: Re: help tracking server problem? I've found 'exceptional magic' (dimus.virtualave.net/delphi/excmagic/) to be useful in debugging some server apps. Another tool that my colleagues use is 'codesite' ([url]http://www.hallogram.com/codesite/)-[/url] which can transmit a detailed trace of execution. This tool really comes into its own when using the 'Instumentation Expert' for ModelMaker to add the required 'Enter Method' and 'Exit Method' code. You might take a look at each of these to discover that they really don't give you what you want; but hey,ho - at least i've tried. - Simon Moscrop "klint gore" <kg (AT) kgb (DOT) une.edu.au> wrote Quote: Anyone know of a good guide to debugging servers? I've converted a smtp server based on winshoes7 to indy 9 (.0.11 if it matters) and I've got a problem with the server running doconnect then disconnecting. The idtcpserver doconnect has been overwridden to just writeln the welcome message. Quote: It appears to happen after running for a while (usually more than 12hrs) and while under load (usually >100 threads). It doesnt appear to be leaking as the memory allocation and handle counts (in the task manager) stay about the same in ratio to the number of threads. Quote: I can't duplicate it on my pc's (which would be a lot easier to debug) but I have users that can hit it at least once a day. I've added a debug log to try and track some things down. There are some occurances of a EIdReadLnMaxLineLengthExceded exception near the time of going into the error state. Has anyone seen this exception cause any problems? It may be nothing as there are other instances of it that don't cause a problem. Quote: My latest update is to add the onexception handler and write out anything except eabort and eidsilentexception to the debug log. I'm also logging doconnect completing, doexecute starting and finishing, and some state information if an exception occurs in doexecute. Quote: Complete source is available if required. thanks, klint. Back to top klint gore Guest Posted: Thu Jan 22, 2004 9:00 pm    Post subject: Re: help tracking server problem? "Simon" <nospamSimonMoscrop (AT) Hotmail (DOT) com> wrote: Quote: I've found 'exceptional magic' (dimus.virtualave.net/delphi/excmagic/) to be useful in debugging some server apps. Another tool that my colleagues use is 'codesite' ([url]http://www.hallogram.com/codesite/)-[/url] which can transmit a detailed trace of execution. This tool really comes into its own when using the 'Instumentation Expert' for ModelMaker to add the required 'Enter Method' and 'Exit Method' code. I tried similar programs eurekalog and madexcept. eurekalog gave me nothing and madexcept ended up leaking more than the app. I'll have a look at the 2 you mentioned (the virtualave site seems to have gone but there's an old copy on torry.net). thanks, klint. 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