I have code in which I use sessions, and after modifying session variables, session_write_close() is called so that the session data lock is released.
Now at another point in the same script, I need to make modifications to the session variables again. However, if I call session_start() again, the "session headers already sent" error shows up.
Is there any way to modify session variables again without getting this error?
You can call session_start(), and session_write_close as many times as you want, it wouldn't cause that error.
This error means that you've already provided some output before attempting to write to the session. You need to make sure you don't echo out anything before attempting to write to the session.
Related
I have a Mule 4 flow that uses the [File] On New or Updated File event source. This element is configured to wait for file changes within a specific folder.
When I deploy my flow, and the deployed application does not have access to the specified folder, a log message is generated and the flow terminates. However, I'd like to add some additional processing in this case. (I'd like to log a message to an alternative event log).
I tried adding an On Error Propagate element to the flow, but this is not triggered when the error occurs - I think this is because the error is a system error rather than a messaging error.
If I could add a step before the On New or Updated File element, then I could check for the existence of the folder, and execute that extra code there - but I see no way to do that either.
Well, I was able to do something that "works". I created another flow that runs on a (long) timer, which runs immediately and checks for the existence of the folder by attempting to list its contents. If that fails, then the On Error ... block of that flow is reached, because in this case the error is treated as a messaging error rather than a system error.
Not an ideal solution, but a solution nonetheless.
May I suggest that you monitor folder which should contain none existing folder?
For exmple you want to monitor /one/two/three/abc.txt. three does not exist. Watch two for new and updated files.
Trying to integrate ApplePayJS into my website and getting this annoying message::
InvalidAccessError Code 15
"The object does not support the operation or argument"
Everything seems to have been going well and now nothing works.
If you get this error, in my experience Safari is now dead to ApplePayJS and you must start by force quitting and reopening it again.
Turns out the reason for me what that the ApplePay API completely craps out if you pass a string instead of an object into the completeMerchantValidation.
If what you return from your server is not JSON object, but a string instead then you can do this:
session.completeMerchantValidation(JSON.parse(merchantSession));
Or better still - fix your server to return a JSON object instead of a string.
Update 4 years later:
I just saw this again today for a real customer as opposed to during my own testing. In this instance the order had succeeded and the customer thought it had failed so attempted to go through the process again.
Oddly it was on this call with the same error "The object does not support the operation or argument."
applePayTokenize.session.completePayment(ApplePaySession.STATUS_SUCCESS);
Since the payment succeeded I've changed my logic to just ignore the exception (for STATUS_SUCCESS only) and proceed to the final page. I don't even know if the ApplePay sheet was still open but even if it was at least when it cancels it will be on the receipt page.
I have also had this issue but with a different reason
Your domain name in the session needs to equal the domain name of your browser. you set the domain name in the backend during in the initiativeContext
https://developer.apple.com/documentation/apple_pay_on_the_web/apple_pay_js_api/requesting_an_apple_pay_payment_session
I've watched quite a few videos on YouTube and have a basic understanding of how to find user-exits (enhancements?) and implement them. However when I try to replicate what I've seen it doesn't appear to be working.
I'm looking to create a user-exit that would execute when a production order has been confirmed (closed/finished) via CO11N. Someone suggested that I put in a line of code "BREAK username." So that I could verify that my code was firing. Nothing breaks. I've tried putting in a message from code found on the internet
MESSAGE s208(00) WITH 'TEST'.
No message is shown. I've activated the include and the project. I've tried different exits/includes and no matter what I do, nothing seems to break or show a message.
Is there something simple I'm missing? I've tried CONFPI05 and CONFPM05.
CONFPI05 is for process orders. CONFPM05 is for plant maintenance orders. First you need to check which kind of order you use. I assume you use production orders. You should check User-Exit CONFPP05 than.
Anyway, I would recommend using BAdI WORKORDER_CONFIRM. Within this BAdI there are methods available where you can raise an error message.
From the BAdI documentation:
Note that in the methods, no system messages may be sent. The only
exceptions are the AT_SAVE and AT_CANCEL_CHECK methods. Within these
methods, a system message may be issued, but only if you trigger the
exception ERROR_WITH_MESSAGE (for AT_SAVE method) or NOT_ALLOWED (for
AT_CANCEL_CHECK method) at the same time.
Note also that within the methods, the "commit work" instruction may
not be carried out because this would lead to incorrect data in the
database.
I strongly recommend not to use MESSAGE statement in any User-Exit or BAdI implementation. The MESSAGE statement will implicit call a COMMIT WORK which could cause database inconsistencies (happens very often by the way).
One additional note. You should check using Checkpoint Groups instead of using BREAK-POINT or BREAK username directly.
I checked the documentation:
CONFPI05 to update your own data after saving the confirmation
In another documentation I found another warning:
In this customer enhancement it is strictly forbidden to send error messages or other messages because otherwise there is the danger that data will be inconsistent. SAP cannot be held responsible for this!!
This sounds like changes in update task. By default breakpoints in update task are not enabled.
Should your code be processed after you pushed save?
If yes, what you can try:
Set anywhere a breakpoint. Or try /h during data insertion.
In debug screen activate the update debugging:
Continue the process with F8.
Hopefully you stop at your break-point.
I am using SoapUI with Groovy script and running into an issue when calling multiple APIs. In the system I am testing one WSDL/API handles the account registration, and returns an authenticator. I then use that returned authenticator to call a different WSDL/API and verify some information. I am able to call each of these WSDLs/APIs separate but when I put them together in a Groovy Script it doesn't work.
testRunner.runTestStepByName("RegisterUser");
testRunner.runTestStepByName("Property Transfer");
if(props.getPropertyValue("userCreated") == "success"){
testRunner.runTestStepByName("AuthenticateStoreUser");
To explain the first line will run the TestStep "RegisterUser". I then do a "Property Transfer" step which takes a few response values from "RegisterUser" - the first is "Status" to see if it succeeded or failed, second is the "Authenticator". I then do an if statement to check if "RegisterUser" succeeded then attempt to call "AuthenticateStoreUser". At this point everything looks fine. Though when it calls "AuthenticateStoreUser" it shows the thinking bar then fails like a timeout, and if I check the "raw" tab for the request it says
<missing xml data>.
Note, that if I try the "AuthenticateStoreUser" by itself the call works fine. It is only after calling "RegisterUser" in the Groovy Script that it behaves strange. I have tried this with a few different calls and believe it is an issue calling two different APIs.
Has anyone dealt with this scenario, or can provide further direction to what may be happening?
(I would have preferred to simply comment on the question, but I don't have enough rep yet)
Have you checked the Error log tab at the bottom when this occurs? If so, what does it say and is there a stacktrace you could share?
If you want to stop a process from being terminated, one way is to hook into TerminateProcess (or NtTerminateProcess). If the process is terminating itself (because you closed its window, for example), the handle supplied to those functions is NULL, so you can find out what executable is being terminated using GetCurrentProcess() & GetModuleFileNameEx(). As GetCurrentProcess() returns a pseudo-handle, you can access it with no problems.
If one process is terminating another, though, the handle supplied is not NULL. It represents the process being terminated. The problem is, you can't get information about that process. You can simply return a code saying "access denied" instead of calling the original [Nt]TerminateProcess(), but that blanket stops all processes from terminating others - which is a bad idea.
The handle must represent something valid otherwise TerminateProcess wouldn't be able to do anything useful with it - but I can't even call GetProcessId() on it, I get ERROR_INVALID_HANDLE (or ERROR_ACCESS_DENIED). I've tried various methods I've collected from the help and from online, including gaining the debug privilege (success) and DuplicateHandle() (same error) and ZwQueryInformationProcess() to get the ID (STATUS_ACCESS_DENIED). I can't even enumerate processes because they return IDs, and I can't get the ID, and OpenProcess() always returns a fresh handle, so I can't compare handles.
I can only assume the handle has PROCESS_TERMINATE right and nothing else. I know that Vista and higher have protected processes due to Digital Rights Management, but I'm using ProcessExplorer as my guinea pig so it's definitely not a media application!
Does anyone know how else I might be able to get any kind of information about the process being terminated from this handle?
It's just an ordinary process handle. The question is, in which process is your hook function executing? If it's the calling process, the handle can be used as-is for GetProcessId or NtQueryInformationProcess. If not, you need to call DuplicateHandle to duplicate the handle into your process.
If you're getting access denied errors, it may be because the process handle only has PROCESS_TERMINATE access. In that case, use DuplicateHandle to "re-open" the process with PROCESS_QUERY_(LIMITED_)INFORMATION access.