Add an idle timeout to runner.go.

If a Read or Write blocks for too long, time out the operation. Otherwise, some
kinds of test failures result in hangs, which prevent the test harness from
progressing. (Notably, OpenSSL currently has a lot of those failure modes and
upstream expressed interest in being able to run the tests to completion.)

Go's APIs want you to send an absolute timeout, to avoid problems when a Read
is split into lots of little Reads. But we actively want the timer to reset in
that case, so this needs a trivial adapter.

The default timeout is set at 15 seconds for now. If this becomes a problem, we
can extend it or build a more robust deadlock detector given an out-of-band
channel (shim tells runner when it's waiting on data, abort if we're also
waiting on data at the same time). But I don't think we'll need that
complexity. 15 seconds appears fine for both valgrind and running tests on a
Nexus 4.


Change-Id: I6463fd36058427d883b526044da1bbefba851785
Reviewed-by: Steven Valdez <>
Reviewed-by: David Benjamin <>
1 file changed
tree: 803e1c7455b8a983dcf01c2c2f80a3ad2e3f4095
  1. .clang-format
  2. .github/
  3. .gitignore
  5. CMakeLists.txt
  12. codereview.settings
  13. crypto/
  14. decrepit/
  15. fuzz/
  16. include/
  17. ssl/
  18. tool/
  19. util/


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: