ServiceRequestException: The request failed. 40

[choonchernlim]

When invoking the following code in 2 running threads:-

@Override
public Set<ExchangeAppointmentBean> query(final String calendarEmail,
                                          final LocalDate startDate,
                                          final LocalDate endDate) {
    final ExchangeService service;
    final FindItemsResults<Appointment> findResults;
    final ExchangeCredentials credentials = new WebCredentials("user", "pwd");

    try {
        service = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
        service.setCredentials(credentials);
        service.setUrl(new URI("https://hostname/ews/exchange.asmx"));

        final FolderId folderId = new FolderId(WellKnownFolderName.Calendar, new Mailbox(calendarEmail));
        final CalendarFolder calendarFolder = CalendarFolder.bind(service, folderId);
        final CalendarView calendarView = new CalendarView(startDate.toDate(), endDate.toDate());

        findResults = calendarFolder.findAppointments(calendarView);
    }
    catch (Exception e) {
        throw CommonUtils.createException(LOGGER, e, "Unexpected error occurred when querying Exchange Server");
    }

   ....

  service.close();
}    

... I get this error from the try-catch block:-

Caused by: microsoft.exchange.webservices.data.core.exception.service.remote.ServiceRequestException: The request failed. 40
    at microsoft.exchange.webservices.data.core.request.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:74)
    at microsoft.exchange.webservices.data.core.request.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:158)
    at microsoft.exchange.webservices.data.core.ExchangeService.bindToFolder(ExchangeService.java:500)
    at microsoft.exchange.webservices.data.core.ExchangeService.bindToFolder(ExchangeService.java:519)
    at microsoft.exchange.webservices.data.core.service.folder.CalendarFolder.bind(CalendarFolder.java:60)
    at microsoft.exchange.webservices.data.core.service.folder.CalendarFolder.bind(CalendarFolder.java:75)
    at myproject.module.pto.service.impl.MicrosoftExchangeServiceImpl.query(MicrosoftExchangeServiceImpl.java:78)
    ... 6 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 40
    at org.apache.http.impl.auth.NTLMEngineImpl$NTLMMessage.addByte(NTLMEngineImpl.java:911)
    at org.apache.http.impl.auth.NTLMEngineImpl$NTLMMessage.addULong(NTLMEngineImpl.java:940)
    at org.apache.http.impl.auth.NTLMEngineImpl$Type1Message.getResponse(NTLMEngineImpl.java:1043)
    at org.apache.http.impl.auth.NTLMEngineImpl.getType1Message(NTLMEngineImpl.java:148)
    at org.apache.http.impl.auth.NTLMEngineImpl.generateType1Msg(NTLMEngineImpl.java:1628)
    at org.apache.http.impl.auth.NTLMScheme.authenticate(NTLMScheme.java:139)
    at org.apache.http.impl.auth.AuthSchemeBase.authenticate(AuthSchemeBase.java:138)
    at org.apache.http.impl.auth.HttpAuthenticator.doAuth(HttpAuthenticator.java:239)
    at org.apache.http.impl.auth.HttpAuthenticator.generateAuthResponse(HttpAuthenticator.java:202)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:262)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at microsoft.exchange.webservices.data.core.request.HttpClientWebRequest.executeRequest(HttpClientWebRequest.java:292)
    at microsoft.exchange.webservices.data.core.request.ServiceRequestBase.getEwsHttpWebResponse(ServiceRequestBase.java:720)
    at microsoft.exchange.webservices.data.core.request.ServiceRequestBase.validateAndEmitRequest(ServiceRequestBase.java:639)
    at microsoft.exchange.webservices.data.core.request.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:62)

[serious6]

a simple approach should be to add a synchronized to that method

public synchronized Set<ExchangeAppointmentBean> query(..)
   [...]

[serious6]

seems to be a duplicate of #370 btw.

[evpaassen]

@serious6 Making the method synchronized is not the solution. The method creates a new ExchangeService every time it is invoked and doesn't share any variables, so I don't see a problem with this code.

It looks like some internal HttpComponents stuff is shared between instances, where it shouldn't be.

Also see: http://stackoverflow.com/questions/29681969/ntlm-authentication-failing-in-multithreaded-application

[choonchernlim]

I did stumble upon that SO post, but nothing I can do on my end to modify the connection manager.

I'm honestly not a big fan of using synchronized at all, but right now I made the synchronized block as small as possible to prevent the problem:-

private final Object lock = new Object();

@Override
public Set<ExchangeAppointmentBean> query(final String calendarEmail,
                                          final LocalDate startDate,
                                          final LocalDate endDate) {
    final ExchangeService service;
    final FindItemsResults<Appointment> findResults;
    final ExchangeCredentials credentials = new WebCredentials("user", "pwd");
    final FolderId folderId = new FolderId(WellKnownFolderName.Calendar, new Mailbox(calendarEmail));
    final CalendarView calendarView = new CalendarView(startDate.toDate(), endDate.toDate());
    final CalendarFolder calendarFolder;

    try {
        service = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
        service.setCredentials(credentials);
        service.setUrl(new URI("https://hostname/ews/exchange.asmx"));

        // problematic part using HttpClient
        synchronized (lock) {
            calendarFolder = CalendarFolder.bind(service, folderId);
        }

        findResults = calendarFolder.findAppointments(calendarView);
    }
    catch (Exception e) {
        throw CommonUtils.createException(LOGGER, e, "Unexpected error occurred when querying Exchange Server");
    }

   ....

  service.close();
}   

This works for me, but I'm not certain if I like this solution. Thank you.

[evpaassen]

It works only because making the method synchronized will eliminate all concurrency. I think this is a bug which should be fixed, however.

[bah7303]

This is affecting me as well. It is making this version of the API unusable for me. I have been able to mitigate the issue caused by this error by writing code to retry following this error but I am worried this solution will not scale very well.

[codewheeney]

I, too, am affected by this issue. The API should support multiple instantiations of the ExchangeSevice that may be used concurrently, IMHO.

[pathikrit]

👍

[schakko]

@codewheeney I implemented a dirty fix for our issue. Would you please give my branch a try?