Hi,
I am raising exceptions on the server which I want to show in the client, but not matter what I do on the server, I always get an Access Violation or Invalid Pointer Operation on the client.
Delphi 10.3 / RO-DA 10.0.0.1495
Thanks
Hi,
pls review the MegaDemo sample. it shows how to pass exception from server-side to client-side.
1 Like
Stuart,
this should ājust workā out of the box, unless something is going wrong or messing the tree exception code. DO you get a call stack for the AV or IPO? Do you get one or the other randomly, or is there any consistency to it?
Is your code doping anything special non-standard with the RO infrastructure, aside form just making plain calls (i.e. trying to handle any OnException events or the like yourself)?
Hi marc
Iām returning to RO/DA after a year on other projects, and I thought it did ājust workā. Iām not doing anything I would call special or non standard. I do raise exceptions in remote method calls on occasion, hoping that they would be raised on the client. But mostly Im just want to see naturally raised exceptions.
I havenāt seen a pattern of AV v IPOā¦maybe if the client app is VCL or not?
Iāll grab a client side stack trace on Monday
Thanks
1 Like
I think this could help greatly, yeah. Thanx!
I added an obvious bug to my server method which would cause an āIndex out of rangeā and then called that method from a console client app, which resulted in the following client side activity.
Project aqDBUpgrade.exe raised exception class EInsufficientRtti with message āInsufficient RTTI available to support this operationā.
ā¦Press BREAKā¦
:7743b922 KERNELBASE.RaiseException + 0x62
:0044c323 CheckCodeAddress + $13
:0046258b TRttiMethod.Invoke + $47
uRORTTISupport.TRORttiClientCache.RebuildCache
uRORTTISupport.TRORttiClientCache.GetExceptionClass(āEAccessViolationā,$292B710)
uRORTTISupport.RORTTI_GetExceptionClass(āEAccessViolationā,$292B710)
uROExceptions.GetExceptionClass(āEAccessViolationā,$292B710)
uROMessage.TROMessage.CreateException(āEAccessViolationā,āAccess violation at address 01BC69F3 in module āāAquilaServer.exeāā. Read of address 00000000ā)
uROBinMessage.TROBinMessage.ReadException
uROMessage.TROMessage.ProcessException
uROBinMessage.TROBinMessage.IntReadFromStream($28D8C00,False)
uROBinMessage.TROBinMessage.ReadFromStream($28D8C00,False)
uROTransportChannel.TROTransportChannel.Dispatch(TROBinMessage($283E744) as IROMessage)
AquilaLibrary_Intf.TiBIDSvc_Proxy.DependencyCalcsDateRangeEx(-36887,2958465,False,$28FB168)
ā¦Press F9ā¦
Project aqDBUpgrade.exe raised exception class EInvalidPointer with message āInvalid pointer operationā.
ā¦Press Breakā¦
:00408af5 TObject.FreeInstance + $11
(this is lMessage := nil in the āFinallyā section of the generated method)
AquilaLibrary_Intf.TiBIDSvc_Proxy.DependencyCalcsDateRangeEx(-36887,2958465,False,$28FB168)
dmDBUpgraderData1.TdmDBUpgraderData.RecalcAnalysis(āAH38896008ā,[])
ā¦F9ā¦
Project aqDBUpgrade.exe raised exception class EInvalidPointer with message āInvalid pointer operationā.
ā¦press Breakā¦
:00408af5 TObject.FreeInstance + $11
:00408b33 TObject.Free + $B
:0040f2a3 @IntfClear + $13
uROInterfacedObject.TROInterfacedObject._Release
:0040f2a3 @IntfClear + $13
aqDBUpgrade.Main
This now appears on the client as āInvalid Pointer Operationā.
Hope this helps.
Hi,
According to call-stack, this issue seems to be a bug in Remoting SDK.
However you are using an outdated version of RO so this issue seems to be fixed for latest 1,5 years because this AV isnāt reproduced with the simple testcase. testcase.zip (221.4 KB)
is it possible to retest your project with the latest trial version of Remoting SDK?
Hi marc & Evgeny,
Itās odd that you say I am using an outdated version of the software, as the Remobjects splash screen and version check when I load Delphi says all my products are up to date ?
Also - I renewed my license on March 1st but the portal still says I have to āRenew Now to get access to this buildā even though it states the current license doesnāt expire until Mar 2023. It also showed a renewal item in my basket - which Iāve now removed.
The latest version I can get is 10.0.0.1533.
When I launch Everwood Welcome screen, and do an update check - it doesnāt actually tell me anything when I hit refresh. This is after hitting āRefreshā :
?? Doesnāt say everythings up to date, but it also doesnāt notify me about any new releases?
Has something has gone wrong here with the renewal - could someone look into this for me ??
Thanks,
Stuart
For info:
FWIW, the license in your account looks good til March 2023ā¦ Iāll have a look if/why yu canāt download the latestā¦
You only have access to the Delphi versions, but thatās expected and matches your license, and the download seems to work fine?. Although I do admit that Iād not expect it to show the āRenew nowā message but rather should just to see the other editions ā I will invesitate and fix why that is happening.
Hi marc
Thanks - I admit I didnāt even try the download link 
Could you look into why my Everwood is reporting everything is up to date too? Iām just not seeing any new release notifcations anywhere & Iād like to stay up to date.
Iāll try the 1533 build see if that solves the problem.
Thanks
Hi,
this is known issue (#337) that was fixed after .1495 was released.
Hi Evgeny,
This is what I am getting now via Everwood (build 1533) - āThere was a problem checking for updatesā:
When I āclick here to try againā it opens the version list which tells me everything is up to date.
Best wishes
Hi,
odd, I canāt reproduce this:
is it possible, that you have some issues with network connection?
Build 1533 seems to have solved my problem of getting error messages through to the client - thanks for that 
Happy to hear that! 