Issues

• Make the sent response status available to the handler, e.g. in terminate/3

  ninenines/cowboy#1727 · Filter by author jbevemyr opened on Sep 29, 2026

• WebTransport: command to set stream priority

  ninenines/cowboy#1724 · Filter by author jfreeze opened on Sep 23, 2026

• Adoption of RFC 10008?

  ninenines/cowboy#1717 · Filter by author MarkoMin opened on Jun 17, 2026
  1

• Using only HTTP/1.1 or HTTP/2 (not both)

  ninenines/cowboy#1716 · Filter by author niamtokik opened on May 19, 2026
  5

• dynamic_buffer with higher number than initial buffer won't be dynamic

  ninenines/cowboy#1714 · Filter by author edgurgel opened on May 6, 2026
  1

• SWAR string scanning optimisation opportunities

  ninenines/cowboy#1711 · Filter by author essen opened on Mar 30, 2026

• Error building DOCS

  ninenines/cowboy#1710 · Filter by author london-coder opened on Mar 13, 2026
  2

• request and idle timeout behavior clarification

  ninenines/cowboy#1709 · Filter by author csrl opened on Feb 24, 2026
  3

• [MacOS] Cowboy Listener Unreachable After Max Open Ports Reached

  ninenines/cowboy#1702 · Filter by author Kozaky opened on Dec 14, 2025
  9

• Response headers not sent when returning empty body tuple

  ninenines/cowboy#1701 · Filter by author lightuponcloud opened on Dec 1, 2025
  7

• Passing undefined as ProxyHeader argument to cowboy_http:init/6 causes dialyzer error

  ninenines/cowboy#1691 · Filter by author eseres opened on Sep 24, 2025
  2

• Provide an interface to attach child processes to a stream

  ninenines/cowboy#1690 · Filter by author essen opened on Sep 11, 2025

• Improve linger loop

  ninenines/cowboy#1672 · Filter by author essen opened on Mar 14, 2025
  2

• Enable FreeBSD in CI again

  ninenines/cowboy#1671 · Filter by author essen opened on Feb 27, 2025
  3

• Apply routing constraint to […] bind?

  ninenines/cowboy#1636 · Filter by author richard-giraud opened on Feb 12, 2024
  3

• Rewrite ws_autobahn to no longer use autobahn-testsuite

  ninenines/cowboy#1631 · Filter by author essen opened on Jan 26, 2024
  3

• Cowboy/ranch protocol that can serve plain text and secure requests from the same port to different handlers

  Unsupported edge case
  ninenines/cowboy#1616 · Filter by author rtATvw opened on Oct 18, 2023

• HTTP/1.1 connection upgraded to HTTP/2 has old cowboy_req:version/1

  ninenines/cowboy#1613 · Filter by author okeuday opened on Jul 20, 2023
  4

• Enabled TCP_CORK when sending a file

  ninenines/cowboy#1586 · Filter by author tanguilp opened on Nov 6, 2022

• Test exclusive TLS 1.3

  ninenines/cowboy#1551 · Filter by author lhoguin opened on Nov 18, 2021
  3

• Better error message when double sending responses without using cowboy_req

  ninenines/cowboy#1531 · Filter by author essen opened on Jul 29, 2021

• connection_type == worker causes connection failure

  ninenines/cowboy#1513 · Filter by author okeuday opened on Apr 22, 2021
  2

• cowboy_req:match_qs with nonempty constraint fails ungracefully on redefined parameters

  ninenines/cowboy#1435 · Filter by author achan1989 opened on Feb 8, 2020
  3

• cowboy_stream_h problems in grpc streaming

  ninenines/cowboy#1430 · Filter by author tony612 opened on Dec 25, 2019
  4

• Adjust socket options (buffer sizes) from the websocket handler

  ninenines/cowboy#1378 · Filter by author larshesel opened on May 28, 2019
  8