Issues

• HTTP/2 server compresses 204/205/304 and HEAD responses (empty gzip stream sent as body)

  eclipse-vertx/vert.x#6472 · Filter by author gustavoy-leovegas opened on Oct 29, 2026 · 5.3.0

• Web client request with illegal characters in the URL breaks connection in the pool

  bug
  Bug

  eclipse-vertx/vert.x#6471 · Filter by author kotcrab opened on Oct 29, 2026 · 5.2.3

• h2c upgrade lower-cases HTTP/1.1 header names with the JVM default locale → PROTOCOL_ERROR under Turkish locale

  eclipse-vertx/vert.x#6459 · Filter by author sharanggupta opened on Oct 22, 2026

• TCPServerBase: connections accepted while updateSSLOptions is in progress fail with NullPointerException

  bug
  eclipse-vertx/vert.x#6457 · Filter by author Traxus0 opened on Oct 21, 2026 · 4.5.36

• Bounding the request-body drain after an early 413 when decompression is enabled

  eclipse-vertx/vert.x#6435 · Filter by author jianchaoxudd opened on Oct 14, 2026 · 5.2.3

• Each connection preallocates a 1024-slot MPSC queue (~4.7 KB) that the uncontended write path doesn't use

  eclipse-vertx/vert.x#6429 · Filter by author franz1981 opened on Oct 13, 2026
  2

• 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
  5

• 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 · 5.2.3
  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