nginx.git/src, branch release-1.13.0

HTTP/2: reduced difference to HTTP/1.x in reading request body.

2017-04-24T11:17:13+00:00

Particularly, this eliminates difference in behavior for requests without body
and deduplicates code.

Prodded by Piotr Sikora.

HTTP/2: rejecting zero WINDOW_UPDATE with PROTOCOL_ERROR.

2017-04-24T11:16:57+00:00

It's required by RFC 7540.  While there is no real harm from such frames,
that should help to detect broken clients.

Based on a patch by Piotr Sikora.

Gzip static: use an appropriate error on memory allocation failure.

2017-04-20T15:26:38+00:00

Cleaned up r->headers_out.headers allocation error handling.

2017-04-20T15:26:37+00:00

If initialization of a header failed for some reason after ngx_list_push(),
leaving the header as is can result in uninitialized memory access by
the header filter or the log module.  The fix is to clear partially
initialized headers in case of errors.

For the Cache-Control header, the fix is to postpone pushing
r->headers_out.cache_control until its value is completed.

Core: signal sender pid logging.

2017-04-20T10:58:16+00:00

Sub filter: restored ngx_http_set_ctx() at the proper place.

2017-04-18T16:55:23+00:00

Previously, ngx_http_sub_header_filter() could fail with a partially
initialized context, later accessed in ngx_http_sub_body_filter()
if called from the perl content handler.

The issue had appeared in 2c045e5b8291 (1.9.4).

A better fix would be to handle ngx_http_send_header() errors in
the perl module, though this doesn't seem to be easy enough.

SSL: compatibility with OpenSSL master branch.

2017-04-18T13:08:46+00:00

The SSL_CTRL_SET_CURVES_LIST macro is removed in the OpenSSL master branch.
SSL_CTX_set1_curves_list is preserved as compatibility with previous versions.

SSL: disabled renegotiation detection in client mode.

2017-04-18T13:08:44+00:00

CVE-2009-3555 is no longer relevant and mitigated by the renegotiation
info extension (secure renegotiation).  On the other hand, unexpected
renegotiation still introduces potential security risks, and hence we do
not allow renegotiation on the server side, as we never request renegotiation.

On the client side the situation is different though.  There are backends
which explicitly request renegotiation, and disabled renegotiation
introduces interoperability problems.  This change allows renegotiation
on the client side, and fixes interoperability problems as observed with
such backends (ticket #872).

Additionally, with TLSv1.3 the SSL_CB_HANDSHAKE_START flag is currently set
by OpenSSL when receiving a NewSessionTicket message, and was detected by
nginx as a renegotiation attempt.  This looks like a bug in OpenSSL, though
this change also allows better interoperability till the problem is fixed.

SSL: added support for TLSv1.3 in ssl_protocols directive.

2017-04-18T12:12:38+00:00

Support for the TLSv1.3 protocol will be introduced in OpenSSL 1.1.1.

Set UDP datagram source address (ticket #1239).

2017-04-11T13:41:53+00:00

Previously, the source IP address of a response UDP datagram could differ from
the original datagram destination address.  This could happen if the server UDP
socket is bound to a wildcard address and the network interface chosen to output
the response packet has a different default address than the destination address
of the original packet.  For example, if two addresses from the same network are
configured on an interface.

Now source address is set explicitly if a response is sent for a server UDP
socket bound to a wildcard address.