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Hanging on DLL call
Message
From
21/06/2001 18:52:22
 
General information
Forum:
Visual FoxPro
Category:
West Wind Web Connection
Miscellaneous
Thread ID:
00521725
Message ID:
00522208
Views:
9
Andrew,
Yep, the monitor is a beauty. Still don't know if it's going to hang, but it's got all the features I wanted (and was writing :-) .
David

>David,
>
>Have you had a look at Rick's West Wind Web Monitor. It's a neat little app that does what you're after. It can monitor as many sites as you like, check for a particluar string in the HTML returned etc, and when it detects a site that's down, it can do any or all of:
>
  • Send an e-mail
    >
  • Call a web address (perhaps a reset page)
    >
  • Kick off an exe on the monitoring machine
    >We use it quite a bit to monitor a WWC site at 90 second intervals and it works like a charm.
    >
    >Cheers,
    >
    >Andrew
    >
    >>We had a period yesterday where a client's MIIS was misbehaving badly because of a mail server load and I was writing an app to detect when our VFP generated site was down.
    >>
    >>So the technique I wanted to use was simply to request a dynamic page using wwipstuff.httpget() and then comparing the content with what it should be.
    >>
    >>However when the remote IIS was misbehaving the following code line, in wwipstuff.httpgetex(), causes VFP to hang indefinitely.
    >>
    lnRetval=HttpSendRequest(hHTTPResult,;
    >>   tcHeaders,LEN(tcHeaders),;
    >>   lcPostBuffer,tnPostSize)
    >>
    >>SO even though at this stage we had a valid "connect", the httpsendrequest failed and never timed out. (Timeout is set to 5 seconds.)
    >>
    >>So this means my app is useless for detecting such an outage.
    >>
    >>Anyone know an answer or can suggest another method?
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