Can't open request for whole directory with EMA C++ in custom application

Reinhold.Blank · May 2018

Hello,

can somebody tell me how i can open request for MMT_DIRECTORY of all sources in custom application. If I try this, as described in RDM USAGE GUIDE, I got the following Message:

loggerMsg
TimeStamp: 12:47:51.941
ClientName: DirectoryCallbackClient
Severity: Error
Text: Internal error: failed to encode RsslRDMDirectoryMsg in DirectoryCa
llbackClient::processCallback()
RsslChannel 0x0000000000000000
Error Id -21
Internal sysError 0
Error Location rsslRDMDirectoryMsg.c:644
Error Text (ret = rsslEncodeElementEntry(pEncodeIter, &elementEntry, &pL
oad->openLimit)) == RSSL_RET_SUCCESS
loggerMsgEnd

If I request directory for a single source by setting a source name, it works, as expected.

Setting SEVERTITY to VERBOSE I see, that the hole dictionary was downloaded previous by the consumer.

Reinhold.Blank · May 2018

hi @umer.nalla

we currently have 11 souces in our TREP and I use v1.1. As I told before the throuble must be in configuration of the ADS. With one of our six ADS it works fine.

Thank you

nick.zincone · May 2018

Hi @Reinhold.Blank,

Within the ESDK package contains the 300 Series example: 331_Directory_Streaming which demonstrates basic usage of the EMA Library for accessing and parsing of OMM Directory data.

Reinhold.Blank · May 2018

Hi @nick.zincone.1,

I used this Sample for testing this pupose. I just remove service name as descriped in USAGE GUID to get a complete source directory with all services existing in our TREP.

But it doesn't work!

nick.zincone · May 2018

Hi @Reinhold.Blank,

I was able to remove the service name and received a complete source directory, i.e.

This was my output:

I assume you are doing the same. Can you confirm which version of the ESDK you are using and show your output window?

thanks.

umer.nalla · May 2018

Hi @Reinhold.Blank

Can you confirm how many services there are on your TREP? And also what version of EMA you are using?

There was a bug in an older version of ESDK - I just tried the 331 example in v.1.1 and it failed with a large source directory.

When I tried the same example in ESDK v1.2 it worked with the same large source directory.

Reinhold.Blank · May 2018

Hi @nick.zincone.1,

I using EMA SDK 3.3.1. Below you see the result.

But I found out, where the throuble must be. We have 6 ADS. With one off them it works fine. On the other 5 the request fails. So I called our admins, that they check the configuration of this ADS.

Thank you for your assistance

nick.zincone · May 2018

https://community.developers.refinitiv.com/discussion/comment/27449#Comment_27449

Thanks @Reinhold.Blank.

Did you mean EMA 3.1.1? The latest version is 3.2.0 which was just recently released. It would be interesting if you get a chance to try the latest version to see if you get an internal error with those specific ADS processes.

Jirapongse · May 2018

@Reinhold.Blank

Error Id -21 is RSSL_RET_BUFFER_TOO_SMALL. It looks like the allocated buffer is too small to encode the retrieved directory before sending to the application. I have tested with the ADS that provides a lot of services and found the same error in EMA 3.1.1..

loggerMsg
    TimeStamp: 11:41:04.700
    ClientName: DirectoryCallbackClient
    Severity: Error
    Text:    Internal error: failed to encode RsslRDMDirectoryMsg in DirectoryCallbackClie
nt::processCallback()
        RsslChannel 0x0000000000000000
        Error Id -21
        Internal sysError 0
        Error Location rsslRDMDirectoryMsg.c:375
        Error Text (ret = rsslEncodeElementEntry(pEncodeIter, &elementEntry, &pInfo->serviceName)) == RSSL_RET_SUCCESS
loggerMsgEnd

However, after testing with EMA 3.2.0.L1, it works fine.

EMA 3.2.0.L1 has been restructured and it uses CMake to generate build files. Please refer to ESDK_C_Migration_Guide.pdf in the package for more information.

Can't open request for whole directory with EMA C++ in custom application

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