RTI Core Libraries and Utilities

How to Set the DSCP Flag in Your System

DSCP (Differentiated Services Code Point) is a series of bits in the IP header for classification purposes. These bits specify the precedence value of the packet, the drop probability, and the network service used. ...
isabel
Fri, 04/07/2017 - 02:52
28215 reads — 0 comments

Why do I get the error "RTI Data Distribution Service No source for License information"?

The error "RTI Data Distribution Service No source for License information" happens when the license file cannot be found or the license has expired. If that is the case, the user application will be unable to initialize Connext DDS, depending on the terms of the license. You can trigger this error ...
Sandra Rodriguez
Tue, 01/10/2017 - 08:07
58782 reads — 0 comments

Modern C++ API with GCC > 5.1 in Connext 5.2.x

GCC 5.1 introduced a new version of libstdc++ with a library ABI that includes new implementations of std::string and std::list (see in GCC online documentation). This new ABI breaks backwards compatibility with applications and libraries linked against older versions of libstdc++ using std::string ...
israel
Wed, 01/04/2017 - 08:08
6555 reads — 0 comments

How do I load QoS profiles via source code in Modern C++?

It is possible to create an Entity (a DataReader , DataWriter, or DomainParticipant ) with a QoS profile defined in the USER_QOS_PROFILES.xml file. In the Java, C, Traditional C++ and .NET APIs, there are methods such as: DDS_Publisher_create_datawriter_with_profile() Depending on what kind of ...
israel
Fri, 12/23/2016 - 06:57
6272 reads — 0 comments

Interoperability Connext DDS Micro DPSE - Connext DDS Professional

RTI Connext DDS Micro provides two ways of determining endpoint information of other DomainParticipants: Dynamic Endpoint Discovery , and Static Endpoint Discovery . Dynamic endpoint discovery uses the DDS Simple Discovery Protocol, which uses builtin discovery DataWriters and DataReaders to ...
francisco
Fri, 12/09/2016 - 06:06
9766 reads — 2 comments

TypeObject and TypeCode

TypeObject and TypeCode support in RTI Connext DDS During the matching process , RTI Connext DDS compares the structure of the topic types provided by the DataWriters and DataReaders to determine if they can communicate. To do so, the TypeObject or TypeCode is needed. If the TypeObject or TypeCode ...
Francisco Porcel
Fri, 11/25/2016 - 05:50
13257 reads — 3 comments

Communicating DDS Entities with different type bounds

By default, a DataWriter of an unbounded type won’t be able to communicate with a DataReader of a bounded type. DDS includes the max size of a bounded type as part of the data type information (known as TypeCode or TypeObject). Since the data type information is used during the Discovery phase, if ...
Valentin Perez
Fri, 11/25/2016 - 01:08
4166 reads — 0 comments

What is the purpose of the different GUID and Sequence_Number fields in DDS_SampleInfo?

The DDS_SampleInfo associated with each sample contains the fields original_publication_virtual_guid and original_publication_virtual_sequence_number . This pair forms the SampleIdentity which uniquely identifies each individual sample. When a DataWriter uses write_w_params (), it can explicitly ...
Sandra Rodriguez
Mon, 11/21/2016 - 09:46
4339 reads — 0 comments

Why can't more than 5 DomainParticipants communicate within in the same machine?

If you have more than 5 DomainParticipants in the same machine, you may notice that your applications are not able to communicate with Participant number 6 and following ones. This is because by default we discover up to 5 DomainParticipants in one location. This behavior is controlled by the Peer ...
sonia
Fri, 10/14/2016 - 04:01
7149 reads — 0 comments

What is the difference between QueryConditions and ContentFilteredTopics?

RTI Connext supports two ways of filtering data : using QueryConditions and ContentFilteredTopics . These two options differ in the moment when DDS applies the filter. QueryConditions filter data after the DataReader has received and queued it. That means that the application will receive all ...
Sandra Rodriguez
Wed, 05/25/2016 - 11:04
4348 reads — 2 comments

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