Changes with nginx 1.5.9                                         22 Jan 2014

    *) Change: now nginx expects escaped URIs in "X-Accel-Redirect" headers.

    *) Feature: the "ssl_buffer_size" directive.

    *) Feature: the "limit_rate" directive can now be used to rate limit
       responses sent in SPDY connections.

    *) Feature: the "spdy_chunk_size" directive.

    *) Feature: the "ssl_session_tickets" directive.
       Thanks to Dirkjan Bussink.

    *) Bugfix: the $ssl_session_id variable contained full session
       serialized instead of just a session id.
       Thanks to Ivan Ristić.

    *) Bugfix: nginx incorrectly handled escaped "?" character in the
       "include" SSI command.

    *) Bugfix: the ngx_http_dav_module did not unescape destination URI of
       the COPY and MOVE methods.

    *) Bugfix: resolver did not understand domain names with a trailing dot.
       Thanks to Yichun Zhang.

    *) Bugfix: alerts "zero size buf in output" might appear in logs while
       proxying; the bug had appeared in 1.3.9.

    *) Bugfix: a segmentation fault might occur in a worker process if the
       ngx_http_spdy_module was used.

    *) Bugfix: proxied WebSocket connections might hang right after
       handshake if the select, poll, or /dev/poll methods were used.

    *) Bugfix: the "xclient" directive of the mail proxy module incorrectly
       handled IPv6 client addresses.
Changes with nginx 1.5.10                                        04 Feb 2014

*) Feature: the ngx_http_spdy_module now uses SPDY 3.1 protocol.
Thanks to Automattic and MaxCDN for sponsoring this work.

*) Feature: the ngx_http_mp4_module now skips tracks too short for a
seek requested.

*) Bugfix: a segmentation fault might occur in a worker process if the
$ssl_session_id variable was used in logs; the bug had appeared in
1.5.9.

*) Bugfix: the $date_local and $date_gmt variables used wrong format
outside of the ngx_http_ssi_filter_module.

*) Bugfix: client connections might be immediately closed if deferred
accept was used; the bug had appeared in 1.3.15.

*) Bugfix: alerts "getsockopt(TCP_FASTOPEN) ... failed" appeared in logs
during binary upgrade on Linux; the bug had appeared in 1.5.8.
Thanks to Piotr Sikora.
add some comment.
Merge remote-tracking branch 'dev-nginx/master' into feature

* dev-nginx/master:
  Changes with nginx 1.5.10                                        04 Feb 2014
  Changes with nginx 1.5.9                                         22 Jan 2014
Merge branch 'feature'

* feature:
  Changes with nginx 1.5.10                                        04 Feb 2014
  Changes with nginx 1.5.9                                         22 Jan 2014