eclipse-cyclonedds/cyclonedds

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Eclipse Cyclone DDS project

Stars: 1.3k
Forks: 485
Open beginner issues: 1
Indexed issues: 279
Avg merge: 21h 57m
Merged PRs (30d): 6

Dominant language: C
License: No license data
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

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279 open issues indexed

Windows static library build fails with MinGW Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

eclipse-cyclonedds/cyclonedds#2466 · Opened Sep 19, 2026
ExternalNetworkAddress configuration doesn't work on TCP Client if port is -1 Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

eclipse-cyclonedds/cyclonedds#2464 · Opened Sep 15, 2026
TCP connections freeze and drop off if participant is in connect state Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

eclipse-cyclonedds/cyclonedds#2463 · Opened Sep 15, 2026
CycloneDDS accepts an XCDR1 payload whose `sequence<long, 5>` length is zero while trailing serialized elements remain in the sample Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

eclipse-cyclonedds/cyclonedds#2453 · Opened Aug 28, 2026
RTPS checksum support Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2452 · Opened Aug 28, 2026
Octets past the type's CDR extent are accepted and silently discarded; FastDDS rejects the same sample Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2445 · Opened Aug 7, 2026
CycloneDDS CDR stream accepts zero-length payload for @appendable type and deserializes it as a default-initialized sample Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

eclipse-cyclonedds/cyclonedds#2432 · Opened Jul 24, 2026
cyclonedds.xsd: IgnoreTypeInformation should be of type xs:string with a pattern Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

eclipse-cyclonedds/cyclonedds#2429 · Opened Jul 22, 2026
[Enhancement] Migrate from OpenSSL PKCS7 to CMS in Access Control to prepare for PQC support Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

eclipse-cyclonedds/cyclonedds#2428 · Opened Jul 20, 2026
XCDRv1 @appendable sample with trailing bytes accepted by CycloneDDS, rejected by FastDDS/OpenDDS Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2427 · Opened Jul 17, 2026
Cyclone DDS 11.0.1 intermittently asserts in ddsi_fini during ROS 2 action teardown Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

eclipse-cyclonedds/cyclonedds#2426 · Opened Jul 14, 2026
Potential undefined behavior on QNX with `fd_set` and `select` Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

eclipse-cyclonedds/cyclonedds#2421 · Opened Jul 3, 2026
QoS provider failes to load xml with tags Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

eclipse-cyclonedds/cyclonedds#2413 · 6 comments · Opened Jun 13, 2026
[Question] Understanding FragmentSize setting Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2396 · 2 comments · Opened May 19, 2026
IDLC_GENERATE fails on Windows when using CycloneDDS 11.0.X as an installed external package Open

Difficulty 2/5 1-3 hours Newbie friendliness 66/100

eclipse-cyclonedds/cyclonedds#2389 · 2 comments · Opened May 13, 2026
Circular include in SubscriberDelegate.hpp causes hard error on GCC 14+ (strict two-phase name lookup) Open

Difficulty 1/5 Under an hour Newbie friendliness 86/100

eclipse-cyclonedds/cyclonedds#2388 · Opened May 10, 2026
[Bug] Multiple self-deadlocks in CycloneDDS caused by recursive locking of non-recursive mutexes Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

eclipse-cyclonedds/cyclonedds#2374 · 3 comments · Opened Mar 25, 2026
feat: @default enum field Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

eclipse-cyclonedds/cyclonedds#2361 · 1 comment · Opened Feb 27, 2026
Performance is unacceptable in small robot network Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2355 · 1 comment · Opened Feb 25, 2026
CycloneDDS on S32G3 NXP platform Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2341 · 2 comments · Opened Jan 21, 2026
libcdr depends ddsrt Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2337 · 1 comment · Opened Jan 14, 2026
libddsc.so.0.10.5 has an crush Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2329 · 4 comments · Opened Dec 11, 2025
owner strength qos not working for shm Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2328 · Opened Dec 9, 2025
How will DDS messages choose the link? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2327 · 4 comments · Opened Nov 30, 2025
Tag for latest fixes on 0.10.x and humble release Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2325 · 1 comment · Opened Nov 20, 2025
Excessive Heartbeat/ACK traffic causes extreme latency (~tens of seconds) on embedded target without RTC Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2324 · 1 comment · Opened Nov 19, 2025
Dual network interface publishing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2322 · 1 comment · Opened Nov 18, 2025
XML QoS profile support for "type coercion" missing Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

eclipse-cyclonedds/cyclonedds#2320 · Opened Nov 14, 2025
Segmentation fault on `dds_delete_topic_descriptor` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2318 · 2 comments · Opened Nov 12, 2025
How to ignore abnormal messages when receiving? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

eclipse-cyclonedds/cyclonedds#2314 · 2 comments · Opened Nov 10, 2025
IDLC_GENERATE cmake function does not support all idlc options Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

eclipse-cyclonedds/cyclonedds#2313 · 1 comment · Opened Nov 5, 2025
Persistent QoS Policy Not Working & Need Guidance for dds_ps Compilation in CycloneDDS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2312 · 1 comment · Opened Nov 1, 2025
Network burst on multiple participants, partitions and computers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2306 · 4 comments · Opened Oct 19, 2025
idlc C++ forgets the #include <array> generation in the generated header Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

eclipse-cyclonedds/cyclonedds#2305 · 1 comment · 2 reactions · Opened Oct 17, 2025
recorder/replayer feature design and contribution Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2294 · 5 comments · Opened Sep 25, 2025
Link on lower-memory microcontroller Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2281 · 2 comments · Opened Sep 8, 2025
Publishing a sample based on a dynamic structure (C bindings) Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

eclipse-cyclonedds/cyclonedds#2279 · 1 comment · Opened Sep 5, 2025
Trying to understand how many copies of data there'll be if I send with `dds_writecdr` Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2262 · 1 comment · Opened Aug 7, 2025
Station bridge routers with cyclone DDS issues Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2261 · Opened Jul 31, 2025
cyclonedds cannot be compiled on arm aarch64 environment? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2257 · 1 comment · Opened Jul 30, 2025
Data Latency increases in low frequency data. Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2256 · 18 comments · Opened Jul 29, 2025
Standardize Phraseology Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2254 · Opened Jul 28, 2025
Multicast packets still being sent despite disabling multicast in XML configuration (ROS2 Humble) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2252 · Opened Jul 27, 2025
HelloworldPublisher and HelloworldSubscriber can't communicate on Fedora OS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2251 · Opened Jul 24, 2025
Debugging an application using CycloneDDS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2249 · Opened Jul 16, 2025
CycloneDDS security Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2248 · 1 comment · Opened Jul 16, 2025
Primitive sequences in appendable structs are serialized incorrectly with XCDRv2 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

eclipse-cyclonedds/cyclonedds#2247 · 1 comment · Opened Jul 14, 2025
Performance degradation when adding subscriber over Ethernet Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2246 · Opened Jul 10, 2025
BuiltinTopic Discovery Delay on Orin QNX Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

eclipse-cyclonedds/cyclonedds#2243 · Opened Jul 2, 2025
about shm Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

eclipse-cyclonedds/cyclonedds#2241 · 2 reactions · Opened Jun 18, 2025

eclipse-cyclonedds/cyclonedds

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