• Resolve FilterConstraints once and key the isConstrained cache by Class by @gavinbunney in https://github.com/Netflix/zuul/pull/2158
• Add single-pass setAll to Headers that preserves multi-valued headers by @gavinbunney in https://github.com/Netflix/zuul/pull/2157

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.17...v3.6.18

• Add zero-allocation iteration helpers to Headers by @gavinbunney in https://github.com/Netflix/zuul/pull/2154
• Build origin requests and client responses with the allocation-free Headers iterators by @gavinbunney in https://github.com/Netflix/zuul/pull/2155

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.16...v3.6.17

• Matthoffman/unpin brotli4j by @matthoffman in https://github.com/Netflix/zuul/pull/2151

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.15...v3.6.16

• Re-fix 1xx handling by @matthoffman in https://github.com/Netflix/zuul/pull/2149

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.14...v3.6.15

• Fix potential CoalescingBufferQueue desync by tracking each body reader index separately by @gavinbunney in https://github.com/Netflix/zuul/pull/2146

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.13...v3.6.14

• Ensure SslExceptionsHandler swallows all client SSL exceptions, not just handshake failures by @gavinbunney in https://github.com/Netflix/zuul/pull/2145
• Revert "Fix for connection leak issue with HTTP 1xx responses (#2137)" by @matthoffman in https://github.com/Netflix/zuul/pull/2147
• Allow subclasses to override writeBufferedBodyContent by @gavinbunney in https://github.com/Netflix/zuul/pull/2148

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.12...v3.6.13

• Fix for vulnerability where callers could see content meant for other callers if the origin returns an HTTP 1xx response #2137

• Add getServers to Resolver and ClientChannelManager to expose the origin pool by @gavinbunney in https://github.com/Netflix/zuul/pull/2143

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.10...v3.6.11

• update netty to v4.2.15 by @matthoffman in https://github.com/Netflix/zuul/pull/2142
• Fix reentrant double responses on origin errors by @gavinbunney in https://github.com/Netflix/zuul/pull/2139

• @matthoffman made their first contribution in https://github.com/Netflix/zuul/pull/2142

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.9...v3.6.10

• Enabling header validation via fast property by @ilanachalom in https://github.com/Netflix/zuul/pull/2138

Full Changelog: https://github.com/Netflix/zuul/compare/v3.6.8...v3.6.9