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David Benjamin 7d79f831c7 Pull Go TLS server extension logic into its own function. 
As with the client, the logic around extensions in 1.3 will want to be
tweaked. readClientHello will probably shrink a bit. (We could probably
stuff 1.3 into the existing parameter negotiation logic, but I expect
it'll get a bit unwieldy once HelloRetryRequest, PSK resumption, and
0-RTT get in there, so I think it's best we leave them separate.)

Change-Id: Id8c323a06a1def6857a59accd9f87fb0b088385a
Reviewed-on: https://boringssl-review.googlesource.com/8596
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-07 23:50:25 +00:00
..
runner Pull Go TLS server extension logic into its own function. 2016-07-07 23:50:25 +00:00
async_bio.cc Fix DTLS asynchronous write handling. 2015-11-02 23:16:22 +00:00
async_bio.h Fix DTLS asynchronous write handling. 2015-11-02 23:16:22 +00:00
bssl_shim.cc Change SignatureAndHashAlgorithm to SignatureScheme in Go. 2016-07-06 20:19:07 +00:00
CMakeLists.txt Add malloc test support to unit tests. 2015-05-21 17:59:48 +00:00
packeted_bio.cc Fix typo. 2016-06-08 18:16:14 +00:00
packeted_bio.h Wrap MSVC-only warning pragmas in a macro. 2016-06-09 21:29:36 +00:00
README.md Add a README.md for ssl/test. 2016-05-06 17:40:28 +00:00
scoped_types.h Remove std::unique_ptr dependency on bssl_shim's scoped types. 2015-03-31 23:03:06 +00:00
test_config.cc Change SignatureAndHashAlgorithm to SignatureScheme in Go. 2016-07-06 20:19:07 +00:00
test_config.h Change SignatureAndHashAlgorithm to SignatureScheme in Go. 2016-07-06 20:19:07 +00:00

README.md

BoringSSL SSL Tests

This directory contains BoringSSL's protocol-level test suite.

Testing a TLS implementation can be difficult. We need to produce invalid but sufficiently correct handshakes to get our implementation close to its edge cases. TLS's cryptographic steps mean we cannot use a transcript and effectively need a TLS implementation on the other end. But we do not wish to litter BoringSSL with options for bugs to test against.

Instead, we use a fork of the Go crypto/tls package, heavily patched with configurable bugs. This code, along with a test suite and harness written in Go, lives in the runner directory. The harness runs BoringSSL via a C/C++ shim binary which lives in this directory. All communication with the shim binary occurs with command-line flags, sockets, and standard I/O.

This strategy also ensures we always test against a second implementation. All features should be implemented twice, once in C for BoringSSL and once in Go for testing. If possible, the Go code should be suitable for potentially upstreaming. However, sometimes test code has different needs. For example, our test DTLS code enforces strict ordering on sequence numbers and has controlled packet drop simulation.

To run the tests manually, run go test from the runner directory. It takes command-line flags found at the top of runner/runner.go. The -help option also works after using go test -c to make a runner.test binary first.

If adding a new test, these files may be a good starting point:

  • runner/runner.go: the test harness and all the individual tests.
  • runner/common.go: contains the Config and ProtocolBugs struct which control the Go TLS implementation's behavior.
  • test_config.h, test_config.cc: the command-line flags which control the shim's behavior.
  • bssl_shim.cc: the shim binary itself.