Getting Started - (DDS) Community RTI Connext Users

Chapter 5Analyzing RTPS PacketsThis chapter will help you interpret the submessages within captured RTPS packets.There are two levels of analysis that you may be interested in:❏ A high-level understanding of what is transpiring during a sequence of capturedRTPS packets.This chapter will help you learn to “read” a sequence of packets by walkingthrough the provided sample capture files. You may also find it helpful to reviewthe Object Discovery chapter in the RTI Data Distribution Service User’s Manual.❏ A more in-depth understanding of an individual packet’s contents.This chapter will show you how to display the decoded contents of individualpackets. Wireshark decodes each RTPS packet and shows you the value for eachfield in the packet’s structure.While the low-level details of a packet’s contents are beyond the scope of thismanual, this information is available in the Real-Time Publish-Subscribe Wire ProtocolSpecification (see Available Documentation (Section 1.1)).This chapter includes the following sections:❏ RTPS Submessage Types (Section 5.1)❏ Displaying Packets (Section 5.2)❏ Analyzing Packets from RTI Data Distribution Service Applications (Section 5.3)5. Analyzing Packets5-1