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David Benjamin 3120950b1e Size TLS read buffers based on the size requested.
Like the write half, rather than allocating the maximum size needed and
relying on the malloc implementation to pool this sanely, allocate the
size the TLS record-layer code believes it needs.

As currently arranged, this will cause us to alternate from a small
allocation (for the record header) and then an allocation sized to the
record itself. Windows is reportedly bad at pooling large allocations,
so, *if the server sends us smaller records*, this will avoid hitting
the problem cases.

If the server sends us size 16k records, the maximum allowed by ther
protocol, we simply must buffer up to that amount and will continue to
allocate similar sizes as before (although slightly smaller; this CL
also fixes small double-counting we did on the allocation sizes).

Separately, we'll gather some metrics in Chromium to see what common
record sizes are to determine if this optimization is sufficient. This
is intended as an easy optimization we can do now, in advance of ongoing
work to fix the extra layer of buffering between Chromium and BoringSSL
with an in-place decrypt API.

Bug: chromium:524258
Change-Id: I233df29df1212154c49fee4285ccc37be12f81dc
Reviewed-on: https://boringssl-review.googlesource.com/17329
Reviewed-by: Adam Langley <agl@google.com>
2017-06-23 23:08:35 +00:00
.github
crypto Detect WatchGuard's TLS 1.3 interference failure mode. 2017-06-22 19:49:23 +00:00
decrepit Move des/ to crypto/fipsmodule/ 2017-05-02 19:21:02 +00:00
fipstools Have run_cavp.go create “resp” directories as needed. 2017-06-08 19:13:01 +00:00
fuzz Bound ssl_ctx_api more aggressively. 2017-06-06 20:50:55 +00:00
include/openssl Detect WatchGuard's TLS 1.3 interference failure mode. 2017-06-22 19:49:23 +00:00
infra/config Restore ios64_compile to the CQ. 2017-05-11 16:49:08 +00:00
ssl Size TLS read buffers based on the size requested. 2017-06-23 23:08:35 +00:00
third_party Fix build with VS 2017. 2017-06-07 18:56:06 +00:00
tool Support standard RFC cipher suite names alongside OpenSSL ones. 2017-06-22 02:45:37 +00:00
util Fix PPC redirectors. 2017-06-22 02:37:19 +00:00
.clang-format Import `newhope' (post-quantum key exchange). 2016-04-26 22:53:59 +00:00
.gitignore Add sde-linux64 to .gitignore. 2017-05-12 14:53:07 +00:00
API-CONVENTIONS.md Fix API-CONVENTIONS.md typos. 2017-01-04 01:46:32 +00:00
BUILDING.md Set static armcaps based on __ARM_FEATURE_CRYPTO. 2017-06-09 00:29:10 +00:00
CMakeLists.txt Use _STL_EXTRA_DISABLED_WARNINGS in VS2017. 2017-06-16 19:37:40 +00:00
codereview.settings No-op change to trigger the new Bazel bot. 2016-07-07 12:07:04 -07:00
CONTRIBUTING.md
FUZZING.md Fix FUZZING.md typo. 2017-03-30 16:54:18 +00:00
INCORPORATING.md Update links to Bazel's site. 2016-10-31 18:16:58 +00:00
LICENSE
PORTING.md Restore SSL_CTX_set_ecdh_auto compatibility hook. 2017-03-14 14:54:45 +00:00
README.md Add an API-CONVENTIONS.md document. 2016-08-04 23:27:49 +00:00
sources.cmake Implement scrypt from RFC 7914. 2017-06-12 20:32:21 +00:00
STYLE.md Work around language and compiler bug in memcpy, etc. 2016-12-21 20:34:47 +00:00

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: