Solutions

When do I need to send TypeCode or TypeObject?

Note: Applies to Connext DDS 5.x and above Sending TypeCode/TypeObject on the wire provides convenience over specifying the type via XML configuration, but has the disadvantage that more data must be sent during endpoint discovery. This can cause network congestion problems when the TypeCode/ ...
grayson
Thu, 03/14/2019 - 11:48
4907 reads — 0 comments

Checking TCP Connections

The following three configurations are related to detecting issues on the TCP connections. Although they seem similar, they enable different features with subtle differences. Connection Liveliness When the Connection Liveliness feature is enabled, RTI TCP Transport Liveliness Request and Response ...
isabel
Mon, 03/11/2019 - 09:24
2564 reads — 0 comments

Under which circumstances will Connext DDS send non-user data?

When we call DataWriter::write() , we expect to see a user data packet sent on the wire, but under what conditions will Connext DDS send packets of its own accord? There are many reasons why Connext DDS may send messages other than user data. Some of the more common reasons are described below. ...
samr
Mon, 03/04/2019 - 05:48
4185 reads — 0 comments

Updated 5.3.x Security Files

The identity certificates that were shipped with Connext 5.3.1 expired on February 16th, 2019. Therefore, creating a DomainParticipant that tries to use those certificates will fail and will report different problems. This solution documents the most common error messages and provides a set of new certificates, private keys, signed governance, and signed permissions documents valid through February 2029. ...
yusheng
Wed, 02/13/2019 - 13:53
3390 reads — 0 comments

How to use DDS Secure logging

When using RTI Security Plugins, secure logging stores information about security events. This information can be provided via the standard output or log file, or distributed over DDS. The information is different between the two methods. Standard output or output file When Secure logging is ...
migueltorres
Wed, 02/13/2019 - 10:02
5482 reads — 0 comments

Why an unbounded sequence defined in XML results in a sequence with a default size

If a type defined in XML has its sequences or strings set to -1 in the attributes sequenceMaxLength or stringMaxLength, the resulting sequence or string length is interpreted as being of a default size, i.e., 100, rather than unbounded. This issue occurs when working with XML-Based Application Creation in particular, and Dynamic Data-based applications in general. ...
Sandra Rodriguez
Wed, 01/30/2019 - 16:25
2658 reads — 0 comments

FlatData and ZeroCopy examples

Connext 6 introduces two features: Zero Copy Transfer over Shared Memory and FlatData Language Binding . These features enable the middleware to reduce the number of copies involved in sending a sample, resulting in lower latencies for large data. The following examples show how to use these ...
alexc
Mon, 01/21/2019 - 09:25
35754 reads — 0 comments

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