I am developing a business central control add in where I need to call external web services. For this, I am using the HttpClient class in AL but no call succeeds.
if not Client.Get('https://google.com', Response)
then begin
responseText := Response.ReasonPhrase();
Message(responseText);
Error('didnt work');
end;
It takes about 2.5-3 Minutes to finish the call.
ResponseText is 'OK' and HttpStatusCode is '200' but the call always fails and goes into error handling block.
Reading the response with Response.Content.ReadAs(responseText); fails with a dynamics error message.
What am I missing? I already granted external access in extension management and tried with sandbox and on premise installs of latest 2019.
Go to extension management, select your extension and from Manage menu, select Configure. In the Configure page, set AllowHttpCleintRequest to True.
Related
I've got issue with Microsoft Dynamics NAV instance.
We're restarting Windows server each night (I know that we probably shouldn't do it, but this is a separated topic and not the point of this question).
After windows server starts, SQL and Dynamics Nav instances are starting. Sometimes (1-2 times per month) Dynamics NAV instance is marked as 'Running', but actually doesn't respond (Web services are not working, RTC client cannot connect to this instance etc.). We have to restart Dynamics Nav instance manually once again in order to get it working correctly.
Did anyone have similar problems? We were looking into Windows Logs, but couldn't find anything interesting..
We also wonder if we shouldn't manage start of the services (SQL server, Dynamics Nav instances etc.) manually somehow instead of depending on the automatic start of everything after windows restart.
Update:
There is actually one error in the Windows Event Log which occures ONLY in days when Dynamics Nav instance is not started corretly:
Server instance: XXXX
Tenant ID:
User:
Type: System.AggregateException
Message: A Task's exception(s) were not observed either by Waiting on
the Task or accessing its Exception property. As a result, the
unobserved exception was rethrown by the finalizer thread.
HResult: -2146233088
Type: System.BadImageFormatException
Message: An attempt was made to load a program with an incorrect
format. (Exception from HRESULT: 0x8007000B)
StackTrace:
at Microsoft.Dynamics.Nav.Runtime.NavLicense.NativeMethods.UnpackLicense(Byte[]
license, Int32 licenseSize, StringBuilder header, Int32 headerSize)
at Microsoft.Dynamics.Nav.Runtime.NavLicense.Create(Byte[] license, LicenseExpiredHandler licenseExpiredHandler)
at Microsoft.Dynamics.Nav.Runtime.NavDatabaseSecurityAndLicense.get_License()
at Microsoft.Dynamics.Nav.Runtime.WindowsLanguageDataProvider.IsAvailableLanguage(Int32
languageId)
at Microsoft.Dynamics.Nav.Runtime.NavEnvironment.FindSupportedLanguage(Int32
languageId, Int32 defaultLanguageId)
at Microsoft.Dynamics.Nav.Runtime.NavSession.Open(Boolean useUserPersonalization, Byte[] licenseToUse, Boolean
allowAppsDisabledMode)
at Microsoft.Dynamics.Nav.Runtime.NavTaskSchedulerHelpers.RunAsSystemSession(NavTenant
tenant, Action`1 action)
at Microsoft.Dynamics.Nav.Runtime.NavTaskScheduler.TaskRunInfo.InternalRun()
at Microsoft.Dynamics.Nav.Runtime.NavTaskFactory.<>c__DisplayClass1_0.<RunTask>b__0()
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
Source: Microsoft.Dynamics.Nav.Ncl
HResult: -2147024885
I'd suggest Delayed Start to help alleviate missing dependencies such as certificates OCSP validation without internet, etc. There should be Windows Logs saying the The service has completed configuration and is ready.
Service Auto-restart actions might help catch unexpected errors, but as it's Running I'm not sure it'll exactly apply to your situation.
The service tier should not be restarted nightly, as you've pointed out :). It might be easier to solve that issue, but I can't suggest anything without more information.
Also, which version of Dynamics NAV/Business Central?
I'm running a SharePoint 2013 on-premise server on which I have deployed a simple WCF service as a farm solution. The service accepts simple Http post requests that contain single MS Word documents as payload and returns these files converted into PDFs.
The service is accessible via Http to anonymous users. The WordAutomationService is running as Administration user account of the SharePoint server.
The service class creates an new instance of the Microsoft.Office.Word.Server.Conversions.SyncConverter and passes the proxy of the SharePoint's running WordAutomationService into the constructor (together with some ConversionJobSettings). Finally it calls the Convert method on the SyncConverter with the input stream (the Word document) and output stream (the web response which will contain the resulting PDF document produced by the WordAutomationService).
When creating the SyncConverter I don't set the UserToken property because the access to the service is by anonymous users. According to the remarks here https://msdn.microsoft.com/en-us/library/microsoft.office.word.server.conversions.syncconverter.usertoken.aspx this seems to be fine:
The default value for this property is a null reference (Nothing in Visual Basic), which is anonymous.
This setup works fine for small Word documents with a couple of pages and returns the expected PDF files. But as soon as the execution time of the WordAutomationService on the SharePoint exceeds a certain time threshold (around 5 seconds) the service fails because it never returns (which leads to a read timeout on the client).
According to the logs it seems the reason for this is that after some time the synchronous conversion job moves the work into a background process:
Sync Stream job conversion takes too long. Don't wait anymore. Check its status later
It then polls the status of this job on a regular basis by calling ConversionServiceApplicationProxy.BatchGetSyncJobStatus. Unfortunately this call fails because internally it tries to create a new channel to talk to this process and for that asks for a security token. The SecurityTokenService however cannot complete the token request and throws an exception:
An unhandled exception has occurred. The security token request cannot be completed. System.InvalidOperationException: The security token request cannot be completed.
at Microsoft.SharePoint.SPSecurityContext.SecurityTokenForServiceContext(Uri contextUri)
at Microsoft.SharePoint.SPChannelFactoryOperations.InternalCreateChannelActingAsLoggedOnUser[TChannel](ChannelFactory`1 factory, EndpointAddress address, Uri via)
at Microsoft.Office.ConversionServices.Service.ConfigChannelFactory`1.CreateChannel(EndpointAddress address)
at Microsoft.Office.ConversionServices.Service.ConversionServiceApplicationProxy.GetChannel(Uri uri)
at Microsoft.Office.ConversionServices.Service.ConversionServiceApplicationProxy.ExecuteOnChannel(Uri endpointAddress, Action`1 action)
at Microsoft.Office.ConversionServices.Service.ConversionServiceApplicationProxy.BatchGetSyncJobStatus(ICollection`1 ucids, Uri endpointAddress)
at Microsoft.Office.ConversionServices.Service.BatchGetStatusPollingThread.Run()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart() StackTrace:
at onetnative.dll: (sig=37460b31-4453-4365-92f5-3a11c267be48|2|onetnative.pdb, offset=28F56) at onetnative.dll: (offset=15735)
I'm at a loss now how to get rid of the token issue so that the system can create the necessary channel to poll the conversion job status. Any help is highly appreciated. Thanks!
(I can't post the full log because it registers as spam)
I’ve found that, if you were to install SharePoint 2013 on a Domain Controller (a topology that Microsoft said is only good for development but not for production), then the default anonymous user in IIS (IUSR) will not work reliably, and any WCF solution which is accessed via an IIS site that has Anonymous Access configured to use the IUSR account will fail when it attempts to access Security Token Service.
In this case the most expedient solution is to reconfigure IIS to use another anonymous identity, namely the identity tied to the Application Pool.
For example if your site is called NameOfSite, you can run this in an elevated PowerShell:
Set-WebConfigurationProperty `
-Filter /system.WebServer/security/authentication/AnonymousAuthentication `
-Name username `
-Value "" `
-location "NameOfSite"
This solves the immediate problem at hand which is that SecurityTokenForServiceContext fails. However, if you’ve installed SharePoint 2013 on Windows 2012 R2 as a Domain Controller, then it is not over: WordServerWorker actually will not start in this configuration.
I can also confirm, however, that if you were to install SharePoint 2013 on a standalone server (with <Setting Id="SERVERROLE" Value="SINGLESERVER"/> role in the unattended config file), then the entire solution works end-to-end, and WordServerWorker will actually start properly.
Previously, the most relevant (and unanswered) question on this must be this MSDN posting, “The security token request cannot be completed”. I would assume that in that case, the service was only in a meta-stable state, and one of the IIS workers would have previously obtained credentials via NTLM during local testing.
Usually when sharepoint service applications interact with each other, these services maintaining current user context trough wcf calls by using service application framework (SAF). Its allows these services to use SPContext.Current, preserve correlation id between call in logs and so on. When this context is lost, services stopping being able to communicate each other. For example this happens if we have a code that starts a new thread but didn't setup user for newly created thread context.
According to your description your service is anonymous and didn't use SAF to maintain user context, but uses some services that requires existence of that context
The possible solution would be is to use SAF(which is tricky configured WCF in a nutshell) instead of plain WCF services with no authentication
Edit:
One more possible solution may be is wrap your code with RunWithElevatedPrivileges to make your services connects sharepoint with application pool identity
I am developing a CICS web service requestor application to consume a distributed web service.
I used the web services assistant DFHWS2LS to transform the wsdl to copybooks successfully.
I have no problem issuing the PUT CONTAINER and INVOKE SERVICE api commands, but when I issue GET CONTAINER I am not receiving any containers or data. No response codes or error messages, but no data. Any ideas on how to debug this would be greatly appreciated.
Thanks,
I have never seen RESP be DFHRESP(NORMAL) and RESP2 be zero and have nothing returned by the server.
Verify the WSDL specifies that something is, in fact, returned by the web service.
Check the RESP and RESP2 values returned by the INVOKE SERVICE API. You don't mention these explicitly, and I presume the former is DFHRESP(NORMAL) and the latter is 0, but you might have coded NOHANDLE so I thought I'd ask.
Take a look in the TD queue mapped to CSSL (the default is the MSGUSR DD) for your CICS region. This is where CICS logs messages when it runs into an error while processing your SOAP request. Look for messages prefixed DFHPI.
Try pinging the endpoint from a TSO session running on the same LPAR as your CICS region, it's possible you're being stopped by a firewall.
In your comment you indicate the requestor is "seeing whitespace on the <SOAP-ENV:Envelope tag>". This isn't something under your direct control. The CICS "plumbing" code takes care of formatting the SOAP message. You may want to ask your CICS Systems Programmer to look for APARs related to the problem and install any associated PTFs.
You could verify the requestor's claim by using the transport handler in Appendix A.3 of this redbook. You'll have to modify your pipeline configuration file to execute the handler.
I am developing application and facing a problem when I use web services.
At any page which request web service, if app goes to background (by search or menu press for example) before request complete it causes an error when I retrieve the application from background again:
An error (Exception of type 'System.Net.WebException' was thrown.) occurred while transmitting data over the HTTP channel.
Any solution for this problem ?
When your application is sent to background, it is suspended, and all connections are therefore cut off. There's nothing you can do about that. Just catch the error and retry the call to the webservice.
You need to call the webservice again when the application is reactivated. One way of doing it is to maintain a bool variable flag.
set it to true when the webservice is started.
set it back to false when the response is received
in the Application_Activated event handler(App.xaml.cs) check the status of flag and call the webservice again if the flag is true.
Otherwise if you just wish to keep your webservice running under lock screen then set
PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
If your app goes to background your webrequest wont complete, You cant do anything about that. But you can prevent crash.
When you know the app is going background ( may be in onNavigatedFrom()) you detach the handler you previously attached to xxCompleted event or handle the thrown exception in handler for xxCompleted in the same way. The first solution implies you service client object must be a class member (private maybe), otherwise it wont be in scope in onNavigatedFrom(). To complete the request later you may use a marker ( bool successful, required) and in OnNavigatedTo() you can do like:
if(required && !successful)
{
// make the request again
}
still exception will be caught in the generated reference file, but the app wont crash and you'd know when you need to make the webrequest again.
I found the same problem, when I tried to fetch a sas uri and calling the PhotoChooserTask.show() simultaniously. So I had to ensure that webrequest is complete before the calling PhotoChooserTask.show().
I am using Microsoft Synch Service Framework 4.0 for synching Sql server Database tables with SqlLite Database on the Ipad side.
I want to customize the C# code. The client will be sending me some parameters e.g. SessionId with the synch services. Depending on the parameters, the code will decide whether to continue with the synching or not. Now, the below code is for initializing the synch service. Where can I put the custom code for processing the parameters. Basically,
If ( Session Id already exists)
// Continue with synching
else
{
Do not continue with synching
}
I believe this is possible using Interceptors: Request, Response OR Conflict Interceptors.
Could anyone provide an example so that I can write business logic before synching
i think you should be writing a Request Interceptor.
here's a quick/basic intro on how to write one.
Well, I faced some problem while using Interceptors when downloading changes from server.
Client is sending me "Server_Code" through header.
if (serverCode == "DEV")
{
foreach (IOfflineEntity entity in context.IncomingChanges)
{
context.RejectChange(entity, "Invalid Server");
}
}
When client is downloading changes from server, I get IncomingChanges value = 0. Thus I cannot reject changes.
How about using filters for sync. i.e. Sync will happen based on the parameters sent by the client.
If client sends SessionId, then sync will happen only for that particular SessionId.
Any ideas?