Issues

• HTTP/1 queued request close throws NPE and skips connection closeHandler

  bug
  Bug

  eclipse-vertx/vert.x#6385 · Filter by author marktrinh opened on Oct 2, 2026 · 4.5.35
  1

• Support strict thread mode for HTTP/2 server streams

  enhancement
  Feature

  eclipse-vertx/vert.x#6369 · Filter by author doxlik opened on Sep 18, 2026

• Investigate and fix io_uring HTTP/3 tests

  bug
  Bug

  eclipse-vertx/vert.x#6342 · Filter by author vietj opened on Sep 3, 2026 · 5.3.0

• Custom connection pool strategy in HttpClient

  enhancement
  Feature

  eclipse-vertx/vert.x#6312 · Filter by author edu-gimenez opened on Aug 14, 2026
  2

• Resolve files when absolute path is used, returns exception

  bug
  Bug

  eclipse-vertx/vert.x#6280 · Filter by author timastered opened on Aug 4, 2026

• NoStackTraceTimeoutException during connection to Kubernetes API server after upgrade to Spring Boot 4.0.3

  bughelp wanted
  Bug

  eclipse-vertx/vert.x#6252 · Filter by author bhu-talendbj opened on Jul 21, 2026
  4

• Add per-connection attachment storage to HttpConnectionInternal

  enhancement
  Feature

  eclipse-vertx/vert.x#6234 · Filter by author Harshal96 opened on Jul 8, 2026

• Summary of latest 60(to 28/6/2026) CI failures.

  bug
  Bug

  eclipse-vertx/vert.x#6218 · Filter by author gaganis opened on Jun 28, 2026
  1

• AddressResolverOptions does not accept bare IPv6 DNS server addresses

  eclipse-vertx/vert.x#6194 · Filter by author shblue21 opened on Jun 15, 2026
  3

• 5.1.x Jackson 3 make ObjectMapper configurable

  enhancement
  Feature

  eclipse-vertx/vert.x#6168 · Filter by author bitkid opened on Jun 8, 2026
  3

• Make sendFile fallback chunk size configurable

  enhancement
  Feature

  eclipse-vertx/vert.x#6160 · Filter by author doxlik opened on Jun 4, 2026

• Performance regression in HTTP/2 codec server path in 5.1.0

  bug
  Bug

  eclipse-vertx/vert.x#6143 · Filter by author doxlik opened on May 30, 2026 · 5.2.1
  2

• Issue with testcontext documentation (all versions)

  bug
  Bug

  eclipse-vertx/vert.x#6139 · Filter by author samuel-hawker opened on May 29, 2026
  3

• Intermittent failures after tests migration

  bug
  Bug

  eclipse-vertx/vert.x#6115 · Filter by author tsegismont opened on May 13, 2026 · 5.3.0
  1

• Expose Netty ioHandler configuration

  enhancementhelp wanted
  Feature

  eclipse-vertx/vert.x#6105 · Filter by author tsegismont opened on May 5, 2026 · 5.3.0
  4

• Probably dispatch method should be reused inside emit

  enhancement
  Feature

  eclipse-vertx/vert.x#6086 · Filter by author doxlik opened on Apr 23, 2026

• NullPointerException in Http2ClientConnection.metricsEnd() when HTTP/2 stream ends before response headers are received

  bug
  Bug

  eclipse-vertx/vert.x#6022 · Filter by author wbabyte opened on Mar 17, 2026

• Multipart decoder retention on abort/reset/exception paths

  bug
  Bug

  eclipse-vertx/vert.x#6014 · Filter by author shblue21 opened on Mar 6, 2026
  2

• Handling of an error through a long chain of completions leads to StackOverflowError

  question
  Bug

  eclipse-vertx/vert.x#5949 · Filter by author guss77 opened on Feb 8, 2026
  3

• [Vert.x 5] Regression: setInstances(N) shares a single EventLoop for all instances when using ThreadingModel.VIRTUAL_THREAD

  bug
  Bug

  eclipse-vertx/vert.x#5924 · Filter by author gusah009 opened on Feb 3, 2026
  2

• Breaking Change: NetClient.connect() connection timeout behavior changed in Vert.x 5

  bug
  Bug

  eclipse-vertx/vert.x#5916 · Filter by author yinjun622 opened on Jan 29, 2026
  4

• My api latency went sky high after upgrading from 4.5.22 to 4.5.24

  bug
  Bug

  eclipse-vertx/vert.x#5915 · Filter by author alicetrix opened on Jan 28, 2026
  2

• Unstable test Http2Test.testKeepAliveTimeout

  bug
  Bug

  eclipse-vertx/vert.x#5865 · Filter by author ahus1 opened on Dec 27, 2025

• Generated Java files are generated on Windows with LF, showing up in IDEs as modified

  enhancement
  Feature

  eclipse-vertx/vert.x#5849 · Filter by author ahus1 opened on Dec 22, 2025

• VirtualThread(s) context lookup relies on ThreadLocal(s)

  bug
  Bug

  eclipse-vertx/vert.x#5817 · Filter by author franz1981 opened on Nov 25, 2025 · 5.3.0
  1