nghttp2 @1.8.0_1: update to 1.9.1

[Schamschula (Marius Schamschula)]

nghttp2 has been updated to version 1.9.1. New this version:

• nghttpx: Fix bug that backend tls keyword did not work with -s option
• nghttpx: Fix handing stream after connection check was failed

New in version 1.9.0:

• lib: Add nghttp2_error_callback to tell application human readable error message
• lib: Reference counted HPACK name/value pair, adding nghttp2_on_header_callback2
• lib: Add nghttp2_option_set_no_auto_ping_ack() option
• lib: Add nghttp2_http2_strerror() to return HTTP/2 error code string
• build: Makefile.msvc enhancements
• build: Lower libev version requirement
• build: cmake build support
• asio: Fix bug that server event loop breaks with exception
• integration: Disable tests that sometimes break randomly on travis integration: do not use recursive target
• h2load: Fix bug that it did not try to connect to server again
• h2load: Fix bug that initial max concurrent streams was too large
• nghttpx: Memcached connection encryption with tls keyword
• nghttpx: Enable/disable TLS per frontend address
• nghttpx: Configure TLS per backend routing pattern
• nghttpx: Add --error-page option to set custom error pages
• nghttpx: Add wildcard host routing
• nghttpx: Change read timeout reset timing
• nghttpx: Don't push if Link header field includes no push
• nghttpx: Deprecate backend-http1-connections-per-host in favor of backend-connections-per-host
• nghttpx: Restructure mode settings, removing --http2-bridge, --client, and --client-proxy options
• nghttpx: Deprecate backend-http1-connections-per-frontend in favor of backend-connections-per-frontend
• nghttpx: Don't share session which is already in draining state
• nghttpx: Effectively disable backend HTTP/2 connection flow control
• nghttpx: Add --frontend-http2-max-concurrent-streams and --backend-http2-max-concurrent-streams, and deprecate --http2-max-concurrent-streams option
• nghttpx: Deprecate --backend-http2-connections-per-worker option
• nghttpx: Share TLS session cache between HTTP/2 and HTTP/1 backend
• nghttpx: Rewrite backend HTTP/2 connection coalesce strategy

[kurthindenburg (Kurt Hindenburg)]

Cc Me!

[kurthindenburg (Kurt Hindenburg)]

done r147204