EMA re-subscribe RIC data

Hi Team,

client is using EMA C++ version to subscribe real time data. they want to know how to re-subscribe data without restart their application. Please advise, thanks

consumer.registerClient(ReqMsg().serviceName(serviceName.c_str()).name(ric.c_str()), client);

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Gurpreet

Hello @gang.chen1

The code to subscribe/re-subscribe any instrument is exactly the same. Once subscribed, the subscription will stay open forever - until user unsubscribes that instrument or the infrastructure closes the stream due to an error condition.

Is the application closing/un-subscribing the instrument?

jxu2

https://community.developers.refinitiv.com/discussion/comment/127968#Comment_127968

Hello @Gurpreet

Level 1 data can be received continuously, but CME's Level 2 data gets interrupted after every Sunday. Currently, the program needs to be restarted to resume receiving data, and the restart must occur at exactly 22:00 GMT on Sunday; restarting earlier will not enable data reception. Is there a better solution for this issue?

Jirapongse

@jxu2

Please check both the stream state and data state of the item.

If the stream state is closed, you can call registerClient to resubscribe. Before restarting, do you have the CME Level 2 stream state and data state available?

jxu2

https://community.developers.refinitiv.com/discussion/comment/127977#Comment_127977

@Jirapongse

Can I immediately resubscribe upon receiving "state close", even if it's still a long time before the local Sunday 22:00 GMT?

jxu2

https://community.developers.refinitiv.com/discussion/comment/127977#Comment_127977

@Jirapongse

20250914 data

ESU25m|Refresh|1757815207742696794||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1bb7 ","Name":"ESU25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"1","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"320"}
ESU25m|Status|1757849221415893848||headinfo|json|{"DomainType":"6","Name":"ESU25m","ServiceName":"hEDD","StreamId":"320"}
ESU25m|Status|1757849222324206541||headinfo|json|{"DomainType":"6","Name":"ESU25m","NameType":"1","ServiceId":"259","ServiceName":"hEDD","StreamId":"320"}

20250913 data
ESU25m|Refresh|1757728807775686007||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1bb7 ","Name":"ESU25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"43552","ServiceId":"259","ServiceName":"hEDD","Solicited":"1","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"320"}
ESU25m|Refresh|1757785846227197650||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1bb7 ","Name":"ESU25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"0","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"320"}

It seems the "close" state was not received, only the "open" state.

Jirapongse

@jxu2

Is ESU25m a CME's Level 2 RIC?

If the state is Open/Ok, this means that the stream is open and the data is okay.
If the state is Open/Suspect, this means that the stream is open but the data is stale. The API or infrastructure will recover the stream. After the stream was recovered, the application will continue receiving data.
If the state is Closed, this means that the stream is closed. The application will not retrieve data for that item anymore.

Typically, for a valid RIC, the stream will not be closed. Otherwise, it has an issue on the data feed or infrastructure.

You may need to enable the debug log and XML trace in the library to verify what the problem is. Please refer to this Enterprise Message API (EMA) - Configuration Overview article.

Moreover, please provide the following inforamtion.

The version of EMA C++ you are using
The EMA Configuration file that you are using

jxu2

https://community.developers.refinitiv.com/discussion/comment/127995#Comment_127995

ESU25m is CME's MBP data. As stated in Case 15081260, it needs to be restarted at Sunday 22:00 GMT, while LV1 data does not require a restart and can continue to be received uninterrupted.

Case 15081260:

To ensure the program receives L2 market data for the upcoming week, please restart it at 22:00 GMT on Sunday.
Kindly note that no L2 market data is available on Saturday, so restarting the program on Saturday will not enable data access for the new week.

Jirapongse

ESU25m is a Level-2 Market Price data so it is the same domain as ESU25.

I checked the stream of ESU25m between 2025-09-05 and 2025-09-27 and got the following messages.

ESU25m,Market Price,2025-09-05T20:59:59.894277981Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34208,,6
ESU25m,Market Price,2025-09-05T20:59:59.939072083Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34224,,6
ESU25m,Market Price,2025-09-05T21:00:00.009778693Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34240,,2
ESU25m,Market Price,2025-09-05T21:00:00.119317828Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34256,,63
ESU25m,Market Price,2025-09-06T00:05:27.154920962Z,-5,Raw,REFRESH,,,,,5058,38,34271,,102
ESU25m,Market Price,2025-09-06T12:28:44.930738312Z,-5,Raw,REFRESH,,,,,5058,38,34303,,102
ESU25m,Market Price,2025-09-06T12:42:17.285835490Z,-5,Raw,REFRESH,,,,,5058,38,34335,,102
ESU25m,Market Price,2025-09-06T23:12:06.645818704Z,-5,Raw,REFRESH,,,,,5058,38,34351,,102
ESU25m,Market Price,2025-09-06T23:12:06.659278707Z,-5,Raw,REFRESH,,,,,5058,38,34367,,102
ESU25m,Market Price,2025-09-07T16:00:00.434178388Z,-5,Raw,UPDATE,CLOSING_RUN,,,,5058,,34382,,80
ESU25m,Market Price,2025-09-07T17:15:04.764027568Z,-5,Raw,REFRESH,,,,,5058,38,34399,,102
ESU25m,Market Price,2025-09-07T17:15:04.768820095Z,-5,Raw,REFRESH,,,,,5058,38,34415,,102
ESU25m,Market Price,2025-09-07T17:15:04.773829620Z,-5,Raw,REFRESH,,,,,5058,38,34431,,102
ESU25m,Market Price,2025-09-07T21:00:00.064380343Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34432,,2
ESU25m,Market Price,2025-09-07T21:00:30.008874363Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34448,,6
ESU25m,Market Price,2025-09-07T21:00:46.369098968Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34464,,37

The last update on 2025-09-05 was at 21:00:00.119317828Z.

ESU25m,Market Price,2025-09-05T21:00:00.119317828Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34256,,63

There were several refresh messages on 2025-09-06.

ESU25m,Market Price,2025-09-06T00:05:27.154920962Z,-5,Raw,REFRESH,,,,,5058,38,34271,,102
ESU25m,Market Price,2025-09-06T12:28:44.930738312Z,-5,Raw,REFRESH,,,,,5058,38,34303,,102
ESU25m,Market Price,2025-09-06T12:42:17.285835490Z,-5,Raw,REFRESH,,,,,5058,38,34335,,102
ESU25m,Market Price,2025-09-06T23:12:06.645818704Z,-5,Raw,REFRESH,,,,,5058,38,34351,,102
ESU25m,Market Price,2025-09-06T23:12:06.659278707Z,-5,Raw,REFRESH,,,,,5058,38,34367,,102

On 2025-09-07, there were a closing run message followed by refresh and update messages.

ESU25m,Market Price,2025-09-07T16:00:00.434178388Z,-5,Raw,UPDATE,CLOSING_RUN,,,,5058,,34382,,80
ESU25m,Market Price,2025-09-07T17:15:04.764027568Z,-5,Raw,REFRESH,,,,,5058,38,34399,,102
ESU25m,Market Price,2025-09-07T17:15:04.768820095Z,-5,Raw,REFRESH,,,,,5058,38,34415,,102
ESU25m,Market Price,2025-09-07T17:15:04.773829620Z,-5,Raw,REFRESH,,,,,5058,38,34431,,102
ESU25m,Market Price,2025-09-07T21:00:00.064380343Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34432,,2
ESU25m,Market Price,2025-09-07T21:00:30.008874363Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34448,,6
ESU25m,Market Price,2025-09-07T21:00:46.369098968Z,-5,Raw,UPDATE,UNSPECIFIED,,,,5058,,34464,,37

According to this information, the stream wasn't closed. There is no need to restart an application to retrieve data on Sunday.

Typically, this forum is best suited for addressing general questions about API usage. For issues that require investigation into the application or API behavior, the appropriate support channel is the API Support team, which can be reached via the Contact Premium Support option. The API Support team provides support primarily through email.

If you do not see the Contact Premium Support button, please reach out to your LSEG account team or sales representative to get registered for the service.

jxu2

https://community.developers.refinitiv.com/discussion/comment/128016#Comment_128016

@Jirapongse

It seems I didn't receive the closing run information on Sunday. Without a restart, it's indeed impossible to receive CME's LV2 market data again.

20250920

ESZ25m|Refresh|1758326795261080127||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1564 ","Name":"ESZ25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"0","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"324"}
ESZ25m|Refresh|1758333607757096914||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1564 ","Name":"ESZ25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"1","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"318"}
ESZ25m|Refresh|1758399490483921722||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1564 ","Name":"ESZ25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"0","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"318"}

20250921

ESZ25m|Refresh|1758420008202806452||headinfo|json|{"ClearCache":"1","Complete":"1","DoNotCache":"0","DomainType":"6","ItemGroup":"1564 ","Name":"ESZ25m","NameType":"1","PermissionData":"0301 0350 58c0 ","QoS":"RealTime/TickByTick","SeqNum":"0","ServiceId":"259","ServiceName":"hEDD","Solicited":"1","State":"Open / Ok / None / '*hash5Astatus-*All is well'","StreamId":"318"}
ESZ25m|Status|1758454029993476700||headinfo|json|{"DomainType":"6","Name":"ESZ25m","ServiceName":"hEDD","StreamId":"318"}
ESZ25m|Status|1758454030899315144||headinfo|json|{"DomainType":"6","Name":"ESZ25m","NameType":"1","ServiceId":"259","ServiceName":"hEDD","StreamId":"318"}

Jirapongse

@jxu2

You may check the version of EMA used by the application. It you are using the old version of EMA, please upgrade it to the latest version to avoid all known issues. The latest version is RTSDK C/CPP 2.3.1.L1 aka EMA/ETA 3.9.1.L1 aka 3.9.1.0.

If it doesn't solve the issue, please contact the the API Support team, which can be reached via the Contact Premium Support option. The API Support team provides support primarily through email.

If you do not see the Contact Premium Support button, please reach out to your LSEG account team or sales representative to get registered for the service.

jxu2

https://community.developers.refinitiv.com/discussion/comment/128028#Comment_128028

@Jirapongse

Does the libema.so.3.8.2.0 version need to be upgraded?

Jirapongse

3.8.2.L1 released last year (Sep 20, 2024). Please upgrade.

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