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random page load and PDF errors

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  • #16
    Re: random page load and PDF errors

    Rich, I agree that the problem is probably the time it takes to create the pdf. As above, the solution might be the sleep() statement. I would make the simple change to

    filename = report.saveas("PFC_SC@[PathAlias.ADB_Path]\finance_agreement.set","pdf",filter,order,filename,.f.,pSet)
    filename2 = report.saveas("PFC_Instructions_NON_WC@[PathAlias.ADB_Path]\Finance_Agreement.set","pdf",filter,order,filename2,.f.,pSet)
    filename3 = report.saveas("PFC_PaymentForm@[PathAlias.ADB_Path]\Finance_Agreement.set","pdf",filter,order,filename3,.f.,pSet)

    Also, pdf_append_list is much faster than several pdf_append statements, so
    filelist = <<%txt%

    If that solves the problem, then you can experiment with reducing the sleep time.
    Pat Bremkamp
    MindKicks Consulting


    • #17
      Re: random page load and PDF errors

      It would be a nightmare if the AA javascript was coded to automatically continue to send requests just because the server did not respond (as it seems to be the case in the original post). It is bad enough that someone at Alpha decided to give a secondChance to 408 responses. Of course if you were receiving the status code 408, it would just mean that the client did indeed receive a message back from server but that status code does not mean that there was any error (it just is saying that it is closing a connection that it thinks you no longer need) and doesn't seem to be related to your issue in any way. Not even sure why the status 408 was brought up as I was under the impression that the client isn't getting any response from the server.

      Eric, do you always get no response headers back for those "(failed)" and "(cancelled)" cases?

      Have you looked into creating a "Failed Request Tracing" rule in the IIS Manager for your website/application? It can trace a lot about what is going on on the server side. For instance, you will definitely see if the web server created a response to send back to the client and that the client just simply never received.


      • #18
        Re: random page load and PDF errors

        I am just proposing the question that perhaps only first-time requests to the server be given a second chance, if they fail. Any request that is on its second chance would not be given another chance.

        P.S. requests can be given a timeout value, so the client-side javascript can do something if it never receives a response. Although, in my client-side log of XMLHttpRequest() function/object callbacks it appears that may not be the case, but it could be because AA does not set a timeout value for many of the requests its makes of the server or the users simply closed out (or killed) the browser before my logging code detected the final callback.
        Last edited by RichCPT; 06-27-2018, 01:01 PM.


        • #19
          Update - it appears this issue was resolved by increasing RAM and going to a load balancer. Thank you ZebraHost for helping us out!


          • #20
            Only took three years but at least it's resolved.
            Mike Brown - Contact Me
            Programmatic Technologies, LLC
            Independent Developer & Consultant


            • #21
              Originally posted by mikeallenbrown View Post
              Only took three years but at least it's resolved.
              Luckily no - it was resolved a long time ago but I just realized I never posted a follow up.