libp2p/jvm-libp2p

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a libp2p implementation for the JVM, written in Kotlin 🔥

Stars: 366
Forks: 85
Open beginner issues: 0
Indexed issues: 54
Avg merge: 2d 39m
Merged PRs (30d): 6

Dominant language: Kotlin
License: Apache-2.0
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 18, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

54 open issues indexed

Smart-dialing feature (address ranking + staggered dials) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

libp2p/jvm-libp2p#529 · Opened Sep 11, 2026
hanvleIWant ignores IDONTWANT, so we send messages go-libp2p and rust-libp2p would skip Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

libp2p/jvm-libp2p#527 · Opened Sep 7, 2026
dropLowPriority() doesn't reclaim state control parts, and queued subscriptions grow unbounded Open

bug

libp2p/jvm-libp2p#519 · 2 comments · 1 assignee · Opened Aug 13, 2026
Remove hardcoded 256-peer caps from GossipSub peer bookkeeping Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

libp2p/jvm-libp2p#514 · 2 comments · Opened Aug 5, 2026
Avoid retaining locally published messages after outbound publication fails Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

libp2p/jvm-libp2p#510 · Opened Aug 3, 2026
Upgrade Kotlin from 1.6.21 to 2.x Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

libp2p/jvm-libp2p#458 · 1 reaction · Opened Apr 20, 2026
Gossip routing integration for partial messages Open

partial-messages

Difficulty 4/5 3-5 days Newbie friendliness 45/100

libp2p/jvm-libp2p#456 · Opened Apr 20, 2026
libp2p connection closed exception... Open

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

libp2p/jvm-libp2p#452 · Opened Mar 10, 2026
version 1.1.0 in jitpack.io fails Open

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

libp2p/jvm-libp2p#451 · Opened Feb 28, 2026
Refine DoS protection and other security/performance concerns Open

partial-messages

Difficulty 4/5 3-5 days Newbie friendliness 42/100

libp2p/jvm-libp2p#449 · Opened Feb 20, 2026
Eager push of partial messages Open

partial-messages

Difficulty 4/5 3-5 days Newbie friendliness 45/100

libp2p/jvm-libp2p#448 · Opened Feb 20, 2026
Review peer scoring impact of partial messages Open

partial-messages

Difficulty 4/5 3-5 days Newbie friendliness 38/100

libp2p/jvm-libp2p#447 · Opened Feb 20, 2026
Expose application interface to use partial messages Open

partial-messages

Difficulty 4/5 3-5 days Newbie friendliness 45/100

libp2p/jvm-libp2p#446 · Opened Feb 20, 2026
Publish partial messages Open

partial-messages

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

libp2p/jvm-libp2p#445 · Opened Feb 20, 2026
Subscribe to partial messages Open

partial-messages

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

libp2p/jvm-libp2p#444 · Opened Feb 20, 2026
Integrate jvm-libp2p into gossipsub-interop test Open

libp2p/jvm-libp2p#439 · 1 assignee · Opened Feb 12, 2026
Investigate how extension control messages can affect peer scoring Open

partial-messages

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

libp2p/jvm-libp2p#437 · 1 comment · Opened Feb 11, 2026
Add support for partial messages extension Open

partial-messages

libp2p/jvm-libp2p#435 · 1 assignee · Opened Feb 11, 2026
Issues with upgrading dependencies Open

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

libp2p/jvm-libp2p#426 · Opened Sep 15, 2025
jvm-ibp2p vulnerable to attack using large RSA keys Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

libp2p/jvm-libp2p#418 · Opened Jul 17, 2025
jvm-ibp2p vulnerable to attack using large RSA keys（vulnerability） Open

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

libp2p/jvm-libp2p#409 · Opened Apr 17, 2025
k8s-based discovery mechanism Open

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

libp2p/jvm-libp2p#406 · Opened Mar 17, 2025
jvm-ibp2p vulnerable to attack using large RSA keys Open

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

libp2p/jvm-libp2p#405 · Opened Mar 2, 2025
TLS Next Protocol is required? Open

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

libp2p/jvm-libp2p#404 · 1 comment · Opened Mar 1, 2025
Limit IWANTs sent for a single messageID Open

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

libp2p/jvm-libp2p#402 · Opened Dec 30, 2024
Gossip: add peer score tracking ability Open

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

libp2p/jvm-libp2p#393 · Opened Oct 24, 2024
[ktlint] Review linting rules Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

libp2p/jvm-libp2p#380 · Opened Sep 26, 2024
[GossipSub] Make sure no duplicates are sent to the same peer Open

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

libp2p/jvm-libp2p#370 · 1 comment · Opened Jul 9, 2024
Using Ed25519 generated with OpenSSL Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

libp2p/jvm-libp2p#358 · Opened Apr 3, 2024
NetworkImpl can't handle relayed addresses Open

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

libp2p/jvm-libp2p#339 · 2 comments · Opened Oct 16, 2023
null peerid on Connection address Open

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

libp2p/jvm-libp2p#331 · Opened Sep 22, 2023
Complete stream write `ChannelFuture` on the actual write of a Muxer frame Open

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

libp2p/jvm-libp2p#316 · 3 comments · Opened Sep 12, 2023
Not works with graalvm native image Open

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

libp2p/jvm-libp2p#315 · Opened Sep 12, 2023
io.libp2p.core.Libp2pException: Overflowed send buffer for connection (Yamux) Open

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

libp2p/jvm-libp2p#311 · 1 comment · Opened Aug 23, 2023
Add Yamux specific unit tests Open

good first issue

libp2p/jvm-libp2p#289 · 1 comment · 1 assignee · Opened May 30, 2023
Yamux SHOULD NOT implicitly acknowledge streams but wait for the application to send the first DATA frame. Open

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

libp2p/jvm-libp2p#287 · Opened May 29, 2023
[Yamux] Handle GoAway frame Open

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

libp2p/jvm-libp2p#286 · Opened May 25, 2023
`isWritable` support for Netty stream-level `Channel`s Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

libp2p/jvm-libp2p#282 · Opened May 19, 2023
Connect API between go-libp2p & jvm-libp2p returns error Open

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

libp2p/jvm-libp2p#234 · 3 comments · 1 reaction · Opened Mar 4, 2022
Gossip interoperability between go-libp2p and jvm-libp2p Open

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

libp2p/jvm-libp2p#224 · 3 comments · Opened Feb 28, 2022
Address book Implementation gaps Open

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

libp2p/jvm-libp2p#199 · Opened Oct 12, 2021
Possible interoperability problem with js-libp2p (WS transport) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

libp2p/jvm-libp2p#195 · Opened Jul 19, 2021
GossipSub Peer Discovery without Kad-DHT? Open

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

libp2p/jvm-libp2p#178 · Opened Feb 8, 2021
addProtocolHandler() doesn't work as expected Open

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

libp2p/jvm-libp2p#176 · 2 comments · Opened Feb 4, 2021
Gossip Message for indirect peers Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

libp2p/jvm-libp2p#174 · 4 comments · Opened Feb 1, 2021
Gossip should not respond to GRAFT with GRAFT Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

libp2p/jvm-libp2p#167 · Opened Dec 3, 2020
Gossip outbound stream is not yet opened on heartbeat Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

libp2p/jvm-libp2p#163 · Opened Nov 18, 2020
bug for each kind of this program Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

libp2p/jvm-libp2p#153 · 3 reactions · Opened Nov 3, 2020
Unclear project status Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

libp2p/jvm-libp2p#125 · 6 comments · Opened Jul 17, 2020
Large packets fail to transmit with WS transport Open

good first issue

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

libp2p/jvm-libp2p#109 · Opened May 21, 2020

libp2p/jvm-libp2p

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