RTI Core Libraries and Utilities

Why do I see a packet that starts by RTPX instead of RTPS?

Packets starting by RTPX are default domain discovery announcements. This is a new non-standard packet introduced in Connext 5.1.0 to help the tools discover applications running in other domains (for instance, RTI Admin Console). This packet is sent to the default multicast address and port for ...
Juanjo Martin
Tue, 01/20/2015 - 08:09
1762 reads — 0 comments

What causes this error: "COMMENDBeReaderService_onSubmessage:!get ber remoteWriter"

The following error during shutdown: COMMENDBeReaderService_onSubmessage:!get ber remoteWriter indicates that a DataReader has received a sample but the corresponding remote DataWriter has already been deleted. If you are shutting down your entire system, you can probably ignore this message. ...
belen
Thu, 01/08/2015 - 03:47
1345 reads — 0 comments

How can I reduce the discovery traffic?

For complex systems, discovery may take a big percentage of the available bandwidth in the network when some of the hosts are rebooted. There are several options that help reducing the impact of discovery in these systems: 1) Reduce the size of discovery packets You can configure the middleware to ...
Juanjo Martin
Thu, 08/07/2014 - 03:00
4111 reads — 0 comments

What error can occur if a thread stack_size is not large enough?

If you create a large number of instances or entities and there is insufficient thread stack space, you can get the following error: REDAFastBufferPool_getBuffer:!precondition: pool==((void *)0) REDASkiplistNode_new:!create node REDASkiplist_assertNodeEA:!create node ...
bobby
Thu, 07/24/2014 - 23:27
2045 reads — 0 comments

I Put My Machines In My Initial Peers Lists -- Why Don’t They Discover Each Other?

There are some situations in which two applications, even though they have been configured to have each other in their initial peers lists, will not discover each other. Two applications are on the same machine and have only either 127.0.0.1 or "localhost" in their initial peers lists AND ...
erin
Mon, 07/07/2014 - 14:26
4281 reads — 0 comments

RTI Connext DDS and the OpenSSL Heartbleed Bug

Note: This solution applies to RTI Connext DDS 5.1.0. The Heartbleed bug, which causes a serious security threat, has been recently identified in certain versions of the OpenSSL cryptographic software library. More information about the bug can be found at www.heartbleed.com . OpenSSL is used for ...
bobby
Mon, 04/28/2014 - 16:47
1926 reads — 0 comments

On VxWorks, an RTP application can not discover a kernel application over shared memory

When running two applications on the same WindRiver VxWorks target, one in kernel mode and the other in RTP mode, the two applications will not discover each other when using out of box settings in RTI Connext. The reason this occurs has to do with how RTI Connext internally marks the individual ...
bobby
Fri, 04/04/2014 - 14:05
2914 reads — 0 comments

Failure to Create a Participant due to Insufficient Shared Memory Kernel Settings

If you are running RTI Connext DDS 5.1.0 or earlier, you may get this error message when starting your application: [D0061|ENABLE]NDDS_Transport_Shmem_create_recvresource_rrEA:failed to initialize shared memory resource segment for key 0x405971 [D0061|ENABLE] ...
jmorales
Tue, 04/01/2014 - 13:53
7599 reads — 0 comments

Resources are not cleaned up when write() is called from a spawned thread

If the logic of your application requires to spawn new threads, and in those threads you are calling a DDS API such as write() , you may notice a memory growth. To ensure that all the resources allocated in that thread are correctly released, remember to call unregister_thread() right before ...
gianpiero
Fri, 03/14/2014 - 08:17
2136 reads — 0 comments

For a large or complex topic data type, why can't generic DDS applications such as Admin Console, DDS Spy and Recording Service get the data type information?

For a complex topic data type that has many fields or long field names, Admin Console may not be able to show the topic’s data type, DDS Spy may not be able to print the samples’ contents, Recording Service may not be able to record the data, and Analyzer may show the warning “Failed to create ...
xihui
Thu, 01/30/2014 - 16:46
6553 reads — 0 comments

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