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David Benjamin 1269ddd377 Never use the internal session cache for a client. 
The internal session cache is keyed on session ID, so this is completely
useless for clients (indeed we never look it up internally). Along the way,
tidy up ssl_update_cache to be more readable. The slight behavior change is
that SSL_CTX_add_session's return code no longer controls the external
callback. It's not clear to me what that could have accomplished. (It can only
fail on allocation error. We only call it for new sessions, so the duplicate
case is impossible.)

The one thing of value the internal cache might have provided is managing the
timeout. The SSL_CTX_flush_sessions logic would flip the not_resumable bit and
cause us not to offer expired sessions (modulo SSL_CTX_flush_sessions's delay
and any discrepancies between the two caches). Instead, just check expiration
when deciding whether or not to offer a session.

This way clients that set SSL_SESS_CACHE_CLIENT blindly don't accidentally
consume gobs of memory.

BUG=531194

Change-Id: If97485beab21874f37737edc44df24e61ce23705
Reviewed-on: https://boringssl-review.googlesource.com/6321
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-26 19:27:28 +00:00
crypto Fix comment style in crypto/rand/rand.c. 2015-10-26 17:58:08 +00:00
decrepit Move arm_arch.h and fix up lots of include paths. 2015-08-26 01:57:59 +00:00
include/openssl Never use the internal session cache for a client. 2015-10-26 19:27:28 +00:00
ssl Never use the internal session cache for a client. 2015-10-26 19:27:28 +00:00
tool Deprecate SSL_library_init. 2015-10-26 18:36:23 +00:00
util Linkify pipe words. 2015-10-26 18:46:53 +00:00
.clang-format Inital import. 2014-06-20 13:17:32 -07:00
.gitignore Fix documentation generation on Windows. 2015-08-19 00:45:42 +00:00
BUILDING.md Allow ARM capabilities to be set at compile time. 2015-10-20 22:40:15 +00:00
CMakeLists.txt Silence MSVC warning C4210. 2015-10-13 18:20:29 +00:00
codereview.settings Add a codereview.settings file. 2014-11-18 22:21:33 +00:00
LICENSE Note that some files carry in Intel license. 2015-07-28 00:55:32 +00:00
PORTING.md Deprecate SSL_library_init. 2015-10-26 18:36:23 +00:00
README.md Links in README.md, take two. 2015-10-13 18:04:43 +00:00
STYLE.md Markdown-ify STYLE. 2015-09-03 18:37:39 +00:00

README.md

BoringSSL

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.

Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.

BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.

There are other files in this directory which might be helpful:

  • PORTING.md: how to port OpenSSL-using code to BoringSSL.
  • BUILDING.md: how to build BoringSSL
  • STYLE.md: rules and guidelines for coding style.
  • include/openssl: public headers with API documentation in comments. Also available online.