| /* | 
 |  *  Copyright 2011 The WebRTC Project Authors. All rights reserved. | 
 |  * | 
 |  *  Use of this source code is governed by a BSD-style license | 
 |  *  that can be found in the LICENSE file in the root of the source | 
 |  *  tree. An additional intellectual property rights grant can be found | 
 |  *  in the file PATENTS.  All contributing project authors may | 
 |  *  be found in the AUTHORS file in the root of the source tree. | 
 |  */ | 
 |  | 
 | #include "rtc_base/ssl_stream_adapter.h" | 
 |  | 
 | #include <algorithm> | 
 | #include <memory> | 
 | #include <set> | 
 | #include <string> | 
 |  | 
 | #include "absl/memory/memory.h" | 
 | #include "absl/strings/string_view.h" | 
 | #include "api/array_view.h" | 
 | #include "api/task_queue/pending_task_safety_flag.h" | 
 | #include "rtc_base/buffer_queue.h" | 
 | #include "rtc_base/checks.h" | 
 | #include "rtc_base/gunit.h" | 
 | #include "rtc_base/helpers.h" | 
 | #include "rtc_base/memory/fifo_buffer.h" | 
 | #include "rtc_base/memory_stream.h" | 
 | #include "rtc_base/message_digest.h" | 
 | #include "rtc_base/openssl_stream_adapter.h" | 
 | #include "rtc_base/ssl_adapter.h" | 
 | #include "rtc_base/ssl_identity.h" | 
 | #include "rtc_base/stream.h" | 
 | #include "test/field_trial.h" | 
 |  | 
 | using ::testing::Combine; | 
 | using ::testing::tuple; | 
 | using ::testing::Values; | 
 | using ::testing::WithParamInterface; | 
 | using ::webrtc::SafeTask; | 
 |  | 
 | static const int kBlockSize = 4096; | 
 | static const char kExporterLabel[] = "label"; | 
 | static const unsigned char kExporterContext[] = "context"; | 
 | static int kExporterContextLen = sizeof(kExporterContext); | 
 |  | 
 | // A private key used for testing, broken into pieces in order to avoid | 
 | // issues with Git's checks for private keys in repos. | 
 | #define RSA_PRIVATE_KEY_HEADER "-----BEGIN RSA PRIVATE KEY-----\n" | 
 |  | 
 | static const char kRSA_PRIVATE_KEY_PEM[] = RSA_PRIVATE_KEY_HEADER | 
 |     "MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBAMYRkbhmI7kVA/rM\n" | 
 |     "czsZ+6JDhDvnkF+vn6yCAGuRPV03zuRqZtDy4N4to7PZu9PjqrRl7nDMXrG3YG9y\n" | 
 |     "rlIAZ72KjcKKFAJxQyAKLCIdawKRyp8RdK3LEySWEZb0AV58IadqPZDTNHHRX8dz\n" | 
 |     "5aTSMsbbkZ+C/OzTnbiMqLL/vg6jAgMBAAECgYAvgOs4FJcgvp+TuREx7YtiYVsH\n" | 
 |     "mwQPTum2z/8VzWGwR8BBHBvIpVe1MbD/Y4seyI2aco/7UaisatSgJhsU46/9Y4fq\n" | 
 |     "2TwXH9QANf4at4d9n/R6rzwpAJOpgwZgKvdQjkfrKTtgLV+/dawvpxUYkRH4JZM1\n" | 
 |     "CVGukMfKNrSVH4Ap4QJBAOJmGV1ASPnB4r4nc99at7JuIJmd7fmuVUwUgYi4XgaR\n" | 
 |     "WhScBsgYwZ/JoywdyZJgnbcrTDuVcWG56B3vXbhdpMsCQQDf9zeJrjnPZ3Cqm79y\n" | 
 |     "kdqANep0uwZciiNiWxsQrCHztywOvbFhdp8iYVFG9EK8DMY41Y5TxUwsHD+67zao\n" | 
 |     "ZNqJAkEA1suLUP/GvL8IwuRneQd2tWDqqRQ/Td3qq03hP7e77XtF/buya3Ghclo5\n" | 
 |     "54czUR89QyVfJEC6278nzA7n2h1uVQJAcG6mztNL6ja/dKZjYZye2CY44QjSlLo0\n" | 
 |     "MTgTSjdfg/28fFn2Jjtqf9Pi/X+50LWI/RcYMC2no606wRk9kyOuIQJBAK6VSAim\n" | 
 |     "1pOEjsYQn0X5KEIrz1G3bfCbB848Ime3U2/FWlCHMr6ch8kCZ5d1WUeJD3LbwMNG\n" | 
 |     "UCXiYxSsu20QNVw=\n" | 
 |     "-----END RSA PRIVATE KEY-----\n"; | 
 |  | 
 | #undef RSA_PRIVATE_KEY_HEADER | 
 |  | 
 | static const char kCERT_PEM[] = | 
 |     "-----BEGIN CERTIFICATE-----\n" | 
 |     "MIIBmTCCAQKgAwIBAgIEbzBSAjANBgkqhkiG9w0BAQsFADARMQ8wDQYDVQQDEwZX\n" | 
 |     "ZWJSVEMwHhcNMTQwMTAyMTgyNDQ3WhcNMTQwMjAxMTgyNDQ3WjARMQ8wDQYDVQQD\n" | 
 |     "EwZXZWJSVEMwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAMYRkbhmI7kVA/rM\n" | 
 |     "czsZ+6JDhDvnkF+vn6yCAGuRPV03zuRqZtDy4N4to7PZu9PjqrRl7nDMXrG3YG9y\n" | 
 |     "rlIAZ72KjcKKFAJxQyAKLCIdawKRyp8RdK3LEySWEZb0AV58IadqPZDTNHHRX8dz\n" | 
 |     "5aTSMsbbkZ+C/OzTnbiMqLL/vg6jAgMBAAEwDQYJKoZIhvcNAQELBQADgYEAUflI\n" | 
 |     "VUe5Krqf5RVa5C3u/UTAOAUJBiDS3VANTCLBxjuMsvqOG0WvaYWP3HYPgrz0jXK2\n" | 
 |     "LJE/mGw3MyFHEqi81jh95J+ypl6xKW6Rm8jKLR87gUvCaVYn/Z4/P3AqcQTB7wOv\n" | 
 |     "UD0A8qfhfDM+LK6rPAnCsVN0NRDY3jvd6rzix9M=\n" | 
 |     "-----END CERTIFICATE-----\n"; | 
 |  | 
 | static const char kIntCert1[] = | 
 |     "-----BEGIN CERTIFICATE-----\n" | 
 |     "MIIEUjCCAjqgAwIBAgIBAjANBgkqhkiG9w0BAQsFADCBljELMAkGA1UEBhMCVVMx\n" | 
 |     "EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS\n" | 
 |     "BgNVBAoMC0dvb2dsZSwgSW5jMQwwCgYDVQQLDANHVFAxFzAVBgNVBAMMDnRlbGVw\n" | 
 |     "aG9ueS5nb29nMR0wGwYJKoZIhvcNAQkBFg5ndHBAZ29vZ2xlLmNvbTAeFw0xNzA5\n" | 
 |     "MjYwNDA5MDNaFw0yMDA2MjIwNDA5MDNaMGQxCzAJBgNVBAYTAlVTMQswCQYDVQQI\n" | 
 |     "DAJDQTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEXMBUGA1UECgwOdGVsZXBob255\n" | 
 |     "Lmdvb2cxFzAVBgNVBAMMDnRlbGVwaG9ueS5nb29nMIGfMA0GCSqGSIb3DQEBAQUA\n" | 
 |     "A4GNADCBiQKBgQDJXWeeU1v1+wlqkVobzI3aN7Uh2iVQA9YCdq5suuabtiD/qoOD\n" | 
 |     "NKpmQqsx7WZGGWSZTDFEBaUpvIK7Hb+nzRqk6iioPCFOFuarm6GxO1xVneImMuE6\n" | 
 |     "tuWb3YZPr+ikChJbl11y5UcSbg0QsbeUc+jHl5umNvrL85Y+z8SP0rxbBwIDAQAB\n" | 
 |     "o2AwXjAdBgNVHQ4EFgQU7tdZobqlN8R8V72FQnRxmqq8tKswHwYDVR0jBBgwFoAU\n" | 
 |     "5GgKMUtcxkQ2dJrtNR5YOlIAPDswDwYDVR0TAQH/BAUwAwEB/zALBgNVHQ8EBAMC\n" | 
 |     "AQYwDQYJKoZIhvcNAQELBQADggIBADObh9Z+z14FmP9zSenhFtq7hFnmNrSkklk8\n" | 
 |     "eyYWXKfOuIriEQQBZsz76ZcnzStih8Rj+yQ0AXydk4fJ5LOwC2cUqQBar17g6Pd2\n" | 
 |     "8g4SIL4azR9WvtiSvpuGlwp25b+yunaacDne6ebnf/MUiiKT5w61Xo3cEPVfl38e\n" | 
 |     "/Up2l0bioid5enUTmg6LY6RxDO6tnZQkz3XD+nNSwT4ehtkqFpHYWjErj0BbkDM2\n" | 
 |     "hiVc/JsYOZn3DmuOlHVHU6sKwqh3JEyvHO/d7DGzMGWHpHwv2mCTJq6l/sR95Tc2\n" | 
 |     "GaQZgGDVNs9pdEouJCDm9e/PbQWRYhnat82PTkXx/6mDAAwdZlIi/pACzq8K4p7e\n" | 
 |     "6hF0t8uKGnXJubHPXxlnJU6yxZ0yWmivAGjwWK4ur832gKlho4jeMDhiI/T3QPpl\n" | 
 |     "iMNsIvxRhdD+GxJkQP1ezayw8s+Uc9KwKglrkBSRRDLCJUfPOvMmXLUDSTMX7kp4\n" | 
 |     "/Ak1CA8dVLJIlfEjLBUuvAttlP7+7lsKNgxAjCxZkWLXIyGULzNPQwVWkGfCbrQs\n" | 
 |     "XyMvSbFsSIb7blV7eLlmf9a+2RprUUkc2ALXLLCI9YQXmxm2beBfMyNmmebwBJzT\n" | 
 |     "B0OR+5pFFNTJPoNlqpdrDsGrDu7JlUtk0ZLZzYyKXbgy2qXxfd4OWzXXjxpLMszZ\n" | 
 |     "LDIpOAkj\n" | 
 |     "-----END CERTIFICATE-----\n"; | 
 |  | 
 | static const char kCACert[] = | 
 |     "-----BEGIN CERTIFICATE-----\n" | 
 |     "MIIGETCCA/mgAwIBAgIJAKN9r/BdbGUJMA0GCSqGSIb3DQEBCwUAMIGWMQswCQYD\n" | 
 |     "VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4g\n" | 
 |     "VmlldzEUMBIGA1UECgwLR29vZ2xlLCBJbmMxDDAKBgNVBAsMA0dUUDEXMBUGA1UE\n" | 
 |     "AwwOdGVsZXBob255Lmdvb2cxHTAbBgkqhkiG9w0BCQEWDmd0cEBnb29nbGUuY29t\n" | 
 |     "MB4XDTE3MDcyNzIzMDE0NVoXDTE3MDgyNjIzMDE0NVowgZYxCzAJBgNVBAYTAlVT\n" | 
 |     "MRMwEQYDVQQIDApDYWxpZm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRQw\n" | 
 |     "EgYDVQQKDAtHb29nbGUsIEluYzEMMAoGA1UECwwDR1RQMRcwFQYDVQQDDA50ZWxl\n" | 
 |     "cGhvbnkuZ29vZzEdMBsGCSqGSIb3DQEJARYOZ3RwQGdvb2dsZS5jb20wggIiMA0G\n" | 
 |     "CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCfvpF7aBV5Hp1EHsWoIlL3GeHwh8dS\n" | 
 |     "lv9VQCegN9rD06Ny7MgcED5AiK2vqXmUmOVS+7NbATkdVYN/eozDhKtN3Q3n87kJ\n" | 
 |     "Nt/TD/TcZZHOZIGsRPbrf2URK26E/5KzTzbzXVBOA1e+gSj+EBbltGqb01ZO5ErF\n" | 
 |     "iPGViPM/HpYKdq6mfz2bS5PhU67XZMM2zvToyReQ/Fjm/6PJhwKSRXSgZF5djPhk\n" | 
 |     "2LfOKMLS0AeZtd2C4DFsCU41lfLUkybioDgFuzTQ3TFi1K8A07KYTMmLY/yQppnf\n" | 
 |     "SpNX58shlVhM+Ed37K1Z0rU0OfVCZ5P+KKaSSfMranjlU7zeUIhZYjqq/EYrEhbS\n" | 
 |     "dLnNHwgJrqxzId3kq8uuLM6+VB7JZKnZLfT90GdAbX4+tutNe21smmogF9f80vEy\n" | 
 |     "gM4tOp9rXrvz9vCwWHXVY9kdKemdLAsREoO6MS9k2ctK4jj80o2dROuFC6Q3e7mz\n" | 
 |     "RjvZr5Tvi464c2o9o/jNlJ0O6q7V2eQzohD+7VnV5QPpRGXxlIeqpR2zoAg+WtRS\n" | 
 |     "4OgHOVYiD3M6uAlggJA5pcDjMfkEZ+pkhtVcT4qMCEoruk6GbyPxS565oSHu16bH\n" | 
 |     "EjeCqbZOVND5T3oA7nz6aQSs8sJabt0jmxUkGVnE+4ZDIuuRtkRma+0P/96Mtqor\n" | 
 |     "OlpNWY1OBDY64QIDAQABo2AwXjAdBgNVHQ4EFgQU5GgKMUtcxkQ2dJrtNR5YOlIA\n" | 
 |     "PDswHwYDVR0jBBgwFoAU5GgKMUtcxkQ2dJrtNR5YOlIAPDswDwYDVR0TAQH/BAUw\n" | 
 |     "AwEB/zALBgNVHQ8EBAMCAQYwDQYJKoZIhvcNAQELBQADggIBAARQly5/bB6VUL2C\n" | 
 |     "ykDYgWt48go407pAra6tL2kjpdfxV5PdL7iMZRkeht00vj+BVahIqZKrNOa/f5Fx\n" | 
 |     "vlpahZFu0PDN436aQwRZ9qWut2qDOK0/z9Hhj6NWybquRFwMwqkPG/ivLMDU8Dmj\n" | 
 |     "CIplpngPYNwXCs0KzdjSXYxqxJbwMjQXELD+/RcurY0oTtJMM1/2vKQMzw24UJqe\n" | 
 |     "XLJAlsnd2AnWzWNUEviDZY89j9NdkHerBmV2gGzcU+X5lgOO5M8odBv0ZC9D+a6Z\n" | 
 |     "QPZAOfdGVw60hhGvTW5s/s0dHwCpegRidhs0MD0fTmwwjYFBSmUx3Gztr4JTzOOr\n" | 
 |     "7e5daJuak2ujQ5DqcGBvt1gePjSudb5brS7JQtN8tI/FyrnR4q/OuOwv1EvlC5RG\n" | 
 |     "hLX+TXaWqFxB1Hd8ebKRR40mboFG6KcUI3lLBthDvQE7jnq48QfZMjlMQK0ZF1l7\n" | 
 |     "SrlwRXWA74bU8CLJvnZKKo9p4TsTiDYGSYC6tNHKj5s3TGWL46oqGyZ0KdGNhrtC\n" | 
 |     "rIGenMhth1vPYjyy0XuGBndXT85yi+IM2l8g8oU845+plxIhgpSI8bbC0oLwnhQ5\n" | 
 |     "ARfsiYLkXDE7imSS0CSUmye76372mlzAIB1is4bBB/SzpPQtBuB9LDKtONgpSGHn\n" | 
 |     "dGaXBy+qbVXVyGXaeEbIRjtJ6m92\n" | 
 |     "-----END CERTIFICATE-----\n"; | 
 |  | 
 | class SSLStreamAdapterTestBase; | 
 |  | 
 | class SSLDummyStreamBase : public rtc::StreamInterface, | 
 |                            public sigslot::has_slots<> { | 
 |  public: | 
 |   SSLDummyStreamBase(SSLStreamAdapterTestBase* test, | 
 |                      absl::string_view side, | 
 |                      rtc::StreamInterface* in, | 
 |                      rtc::StreamInterface* out) | 
 |       : test_base_(test), side_(side), in_(in), out_(out), first_packet_(true) { | 
 |     in_->SignalEvent.connect(this, &SSLDummyStreamBase::OnEventIn); | 
 |     out_->SignalEvent.connect(this, &SSLDummyStreamBase::OnEventOut); | 
 |   } | 
 |  | 
 |   rtc::StreamState GetState() const override { return rtc::SS_OPEN; } | 
 |  | 
 |   rtc::StreamResult Read(rtc::ArrayView<uint8_t> buffer, | 
 |                          size_t& read, | 
 |                          int& error) override { | 
 |     rtc::StreamResult r; | 
 |  | 
 |     r = in_->Read(buffer, read, error); | 
 |     if (r == rtc::SR_BLOCK) | 
 |       return rtc::SR_BLOCK; | 
 |     if (r == rtc::SR_EOS) | 
 |       return rtc::SR_EOS; | 
 |  | 
 |     if (r != rtc::SR_SUCCESS) { | 
 |       ADD_FAILURE(); | 
 |       return rtc::SR_ERROR; | 
 |     } | 
 |  | 
 |     return rtc::SR_SUCCESS; | 
 |   } | 
 |  | 
 |   // Catch readability events on in and pass them up. | 
 |   void OnEventIn(rtc::StreamInterface* stream, int sig, int err) { | 
 |     int mask = (rtc::SE_READ | rtc::SE_CLOSE); | 
 |  | 
 |     if (sig & mask) { | 
 |       RTC_LOG(LS_VERBOSE) << "SSLDummyStreamBase::OnEvent side=" << side_ | 
 |                           << " sig=" << sig << " forwarding upward"; | 
 |       PostEvent(sig & mask, 0); | 
 |     } | 
 |   } | 
 |  | 
 |   // Catch writeability events on out and pass them up. | 
 |   void OnEventOut(rtc::StreamInterface* stream, int sig, int err) { | 
 |     if (sig & rtc::SE_WRITE) { | 
 |       RTC_LOG(LS_VERBOSE) << "SSLDummyStreamBase::OnEvent side=" << side_ | 
 |                           << " sig=" << sig << " forwarding upward"; | 
 |  | 
 |       PostEvent(sig & rtc::SE_WRITE, 0); | 
 |     } | 
 |   } | 
 |  | 
 |   // Write to the outgoing FifoBuffer | 
 |   rtc::StreamResult WriteData(rtc::ArrayView<const uint8_t> data, | 
 |                               size_t& written, | 
 |                               int& error) { | 
 |     return out_->Write(data, written, error); | 
 |   } | 
 |  | 
 |   rtc::StreamResult Write(rtc::ArrayView<const uint8_t> data, | 
 |                           size_t& written, | 
 |                           int& error) override; | 
 |  | 
 |   void Close() override { | 
 |     RTC_LOG(LS_INFO) << "Closing outbound stream"; | 
 |     out_->Close(); | 
 |   } | 
 |  | 
 |  private: | 
 |   void PostEvent(int events, int err) { | 
 |     thread_->PostTask(SafeTask(task_safety_.flag(), [this, events, err]() { | 
 |       SignalEvent(this, events, err); | 
 |     })); | 
 |   } | 
 |  | 
 |   webrtc::ScopedTaskSafety task_safety_; | 
 |   rtc::Thread* const thread_ = rtc::Thread::Current(); | 
 |   SSLStreamAdapterTestBase* test_base_; | 
 |   const std::string side_; | 
 |   rtc::StreamInterface* in_; | 
 |   rtc::StreamInterface* out_; | 
 |   bool first_packet_; | 
 | }; | 
 |  | 
 | class SSLDummyStreamTLS : public SSLDummyStreamBase { | 
 |  public: | 
 |   SSLDummyStreamTLS(SSLStreamAdapterTestBase* test, | 
 |                     absl::string_view side, | 
 |                     rtc::FifoBuffer* in, | 
 |                     rtc::FifoBuffer* out) | 
 |       : SSLDummyStreamBase(test, side, in, out) {} | 
 | }; | 
 |  | 
 | class BufferQueueStream : public rtc::StreamInterface { | 
 |  public: | 
 |   BufferQueueStream(size_t capacity, size_t default_size) | 
 |       : buffer_(capacity, default_size) {} | 
 |  | 
 |   // Implementation of abstract StreamInterface methods. | 
 |  | 
 |   // A buffer queue stream is always "open". | 
 |   rtc::StreamState GetState() const override { return rtc::SS_OPEN; } | 
 |  | 
 |   // Reading a buffer queue stream will either succeed or block. | 
 |   rtc::StreamResult Read(rtc::ArrayView<uint8_t> buffer, | 
 |                          size_t& read, | 
 |                          int& error) override { | 
 |     const bool was_writable = buffer_.is_writable(); | 
 |     if (!buffer_.ReadFront(buffer.data(), buffer.size(), &read)) | 
 |       return rtc::SR_BLOCK; | 
 |  | 
 |     if (!was_writable) | 
 |       NotifyWritableForTest(); | 
 |  | 
 |     return rtc::SR_SUCCESS; | 
 |   } | 
 |  | 
 |   // Writing to a buffer queue stream will either succeed or block. | 
 |   rtc::StreamResult Write(rtc::ArrayView<const uint8_t> data, | 
 |                           size_t& written, | 
 |                           int& error) override { | 
 |     const bool was_readable = buffer_.is_readable(); | 
 |     if (!buffer_.WriteBack(data.data(), data.size(), &written)) | 
 |       return rtc::SR_BLOCK; | 
 |  | 
 |     if (!was_readable) | 
 |       NotifyReadableForTest(); | 
 |  | 
 |     return rtc::SR_SUCCESS; | 
 |   } | 
 |  | 
 |   // A buffer queue stream can not be closed. | 
 |   void Close() override {} | 
 |  | 
 |  protected: | 
 |   void NotifyReadableForTest() { PostEvent(rtc::SE_READ, 0); } | 
 |   void NotifyWritableForTest() { PostEvent(rtc::SE_WRITE, 0); } | 
 |  | 
 |  private: | 
 |   void PostEvent(int events, int err) { | 
 |     thread_->PostTask(SafeTask(task_safety_.flag(), [this, events, err]() { | 
 |       SignalEvent(this, events, err); | 
 |     })); | 
 |   } | 
 |  | 
 |   rtc::Thread* const thread_ = rtc::Thread::Current(); | 
 |   webrtc::ScopedTaskSafety task_safety_; | 
 |   rtc::BufferQueue buffer_; | 
 | }; | 
 |  | 
 | class SSLDummyStreamDTLS : public SSLDummyStreamBase { | 
 |  public: | 
 |   SSLDummyStreamDTLS(SSLStreamAdapterTestBase* test, | 
 |                      absl::string_view side, | 
 |                      BufferQueueStream* in, | 
 |                      BufferQueueStream* out) | 
 |       : SSLDummyStreamBase(test, side, in, out) {} | 
 | }; | 
 |  | 
 | static const int kFifoBufferSize = 4096; | 
 | static const int kBufferCapacity = 1; | 
 | static const size_t kDefaultBufferSize = 2048; | 
 |  | 
 | class SSLStreamAdapterTestBase : public ::testing::Test, | 
 |                                  public sigslot::has_slots<> { | 
 |  public: | 
 |   SSLStreamAdapterTestBase( | 
 |       absl::string_view client_cert_pem, | 
 |       absl::string_view client_private_key_pem, | 
 |       bool dtls, | 
 |       rtc::KeyParams client_key_type = rtc::KeyParams(rtc::KT_DEFAULT), | 
 |       rtc::KeyParams server_key_type = rtc::KeyParams(rtc::KT_DEFAULT)) | 
 |       : client_cert_pem_(client_cert_pem), | 
 |         client_private_key_pem_(client_private_key_pem), | 
 |         client_key_type_(client_key_type), | 
 |         server_key_type_(server_key_type), | 
 |         client_stream_(nullptr), | 
 |         server_stream_(nullptr), | 
 |         delay_(0), | 
 |         mtu_(1460), | 
 |         loss_(0), | 
 |         lose_first_packet_(false), | 
 |         damage_(false), | 
 |         dtls_(dtls), | 
 |         handshake_wait_(5000), | 
 |         identities_set_(false) { | 
 |     // Set use of the test RNG to get predictable loss patterns. | 
 |     rtc::SetRandomTestMode(true); | 
 |   } | 
 |  | 
 |   ~SSLStreamAdapterTestBase() override { | 
 |     // Put it back for the next test. | 
 |     rtc::SetRandomTestMode(false); | 
 |   } | 
 |  | 
 |   void SetUp() override { | 
 |     CreateStreams(); | 
 |  | 
 |     client_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(client_stream_)); | 
 |     server_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(server_stream_)); | 
 |  | 
 |     // Set up the slots | 
 |     client_ssl_->SignalEvent.connect(this, &SSLStreamAdapterTestBase::OnEvent); | 
 |     server_ssl_->SignalEvent.connect(this, &SSLStreamAdapterTestBase::OnEvent); | 
 |  | 
 |     std::unique_ptr<rtc::SSLIdentity> client_identity; | 
 |     if (!client_cert_pem_.empty() && !client_private_key_pem_.empty()) { | 
 |       client_identity = rtc::SSLIdentity::CreateFromPEMStrings( | 
 |           client_private_key_pem_, client_cert_pem_); | 
 |     } else { | 
 |       client_identity = rtc::SSLIdentity::Create("client", client_key_type_); | 
 |     } | 
 |     auto server_identity = rtc::SSLIdentity::Create("server", server_key_type_); | 
 |  | 
 |     client_ssl_->SetIdentity(std::move(client_identity)); | 
 |     server_ssl_->SetIdentity(std::move(server_identity)); | 
 |   } | 
 |  | 
 |   void TearDown() override { | 
 |     client_ssl_.reset(nullptr); | 
 |     server_ssl_.reset(nullptr); | 
 |   } | 
 |  | 
 |   virtual void CreateStreams() = 0; | 
 |  | 
 |   // Recreate the client/server identities with the specified validity period. | 
 |   // `not_before` and `not_after` are offsets from the current time in number | 
 |   // of seconds. | 
 |   void ResetIdentitiesWithValidity(int not_before, int not_after) { | 
 |     CreateStreams(); | 
 |  | 
 |     client_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(client_stream_)); | 
 |     server_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(server_stream_)); | 
 |  | 
 |     client_ssl_->SignalEvent.connect(this, &SSLStreamAdapterTestBase::OnEvent); | 
 |     server_ssl_->SignalEvent.connect(this, &SSLStreamAdapterTestBase::OnEvent); | 
 |  | 
 |     time_t now = time(nullptr); | 
 |  | 
 |     rtc::SSLIdentityParams client_params; | 
 |     client_params.key_params = rtc::KeyParams(rtc::KT_DEFAULT); | 
 |     client_params.common_name = "client"; | 
 |     client_params.not_before = now + not_before; | 
 |     client_params.not_after = now + not_after; | 
 |     auto client_identity = rtc::SSLIdentity::CreateForTest(client_params); | 
 |  | 
 |     rtc::SSLIdentityParams server_params; | 
 |     server_params.key_params = rtc::KeyParams(rtc::KT_DEFAULT); | 
 |     server_params.common_name = "server"; | 
 |     server_params.not_before = now + not_before; | 
 |     server_params.not_after = now + not_after; | 
 |     auto server_identity = rtc::SSLIdentity::CreateForTest(server_params); | 
 |  | 
 |     client_ssl_->SetIdentity(std::move(client_identity)); | 
 |     server_ssl_->SetIdentity(std::move(server_identity)); | 
 |   } | 
 |  | 
 |   virtual void OnEvent(rtc::StreamInterface* stream, int sig, int err) { | 
 |     RTC_LOG(LS_VERBOSE) << "SSLStreamAdapterTestBase::OnEvent sig=" << sig; | 
 |  | 
 |     if (sig & rtc::SE_READ) { | 
 |       ReadData(stream); | 
 |     } | 
 |  | 
 |     if ((stream == client_ssl_.get()) && (sig & rtc::SE_WRITE)) { | 
 |       WriteData(); | 
 |     } | 
 |   } | 
 |  | 
 |   void SetPeerIdentitiesByDigest(bool correct, bool expect_success) { | 
 |     unsigned char server_digest[20]; | 
 |     size_t server_digest_len; | 
 |     unsigned char client_digest[20]; | 
 |     size_t client_digest_len; | 
 |     bool rv; | 
 |     rtc::SSLPeerCertificateDigestError err; | 
 |     rtc::SSLPeerCertificateDigestError expected_err = | 
 |         expect_success | 
 |             ? rtc::SSLPeerCertificateDigestError::NONE | 
 |             : rtc::SSLPeerCertificateDigestError::VERIFICATION_FAILED; | 
 |  | 
 |     RTC_LOG(LS_INFO) << "Setting peer identities by digest"; | 
 |  | 
 |     rv = server_identity()->certificate().ComputeDigest( | 
 |         rtc::DIGEST_SHA_1, server_digest, 20, &server_digest_len); | 
 |     ASSERT_TRUE(rv); | 
 |     rv = client_identity()->certificate().ComputeDigest( | 
 |         rtc::DIGEST_SHA_1, client_digest, 20, &client_digest_len); | 
 |     ASSERT_TRUE(rv); | 
 |  | 
 |     if (!correct) { | 
 |       RTC_LOG(LS_INFO) << "Setting bogus digest for server cert"; | 
 |       server_digest[0]++; | 
 |     } | 
 |     rv = client_ssl_->SetPeerCertificateDigest(rtc::DIGEST_SHA_1, server_digest, | 
 |                                                server_digest_len, &err); | 
 |     EXPECT_EQ(expected_err, err); | 
 |     EXPECT_EQ(expect_success, rv); | 
 |  | 
 |     if (!correct) { | 
 |       RTC_LOG(LS_INFO) << "Setting bogus digest for client cert"; | 
 |       client_digest[0]++; | 
 |     } | 
 |     rv = server_ssl_->SetPeerCertificateDigest(rtc::DIGEST_SHA_1, client_digest, | 
 |                                                client_digest_len, &err); | 
 |     EXPECT_EQ(expected_err, err); | 
 |     EXPECT_EQ(expect_success, rv); | 
 |  | 
 |     identities_set_ = true; | 
 |   } | 
 |  | 
 |   void SetupProtocolVersions(rtc::SSLProtocolVersion server_version, | 
 |                              rtc::SSLProtocolVersion client_version) { | 
 |     server_ssl_->SetMaxProtocolVersion(server_version); | 
 |     client_ssl_->SetMaxProtocolVersion(client_version); | 
 |   } | 
 |  | 
 |   void TestHandshake(bool expect_success = true) { | 
 |     server_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |     client_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |  | 
 |     if (!dtls_) { | 
 |       // Make sure we simulate a reliable network for TLS. | 
 |       // This is just a check to make sure that people don't write wrong | 
 |       // tests. | 
 |       RTC_CHECK_EQ(1460, mtu_); | 
 |       RTC_CHECK(!loss_); | 
 |       RTC_CHECK(!lose_first_packet_); | 
 |     } | 
 |  | 
 |     if (!identities_set_) | 
 |       SetPeerIdentitiesByDigest(true, true); | 
 |  | 
 |     // Start the handshake | 
 |     int rv; | 
 |  | 
 |     server_ssl_->SetServerRole(); | 
 |     rv = server_ssl_->StartSSL(); | 
 |     ASSERT_EQ(0, rv); | 
 |  | 
 |     rv = client_ssl_->StartSSL(); | 
 |     ASSERT_EQ(0, rv); | 
 |  | 
 |     // Now run the handshake | 
 |     if (expect_success) { | 
 |       EXPECT_TRUE_WAIT((client_ssl_->GetState() == rtc::SS_OPEN) && | 
 |                            (server_ssl_->GetState() == rtc::SS_OPEN), | 
 |                        handshake_wait_); | 
 |     } else { | 
 |       EXPECT_TRUE_WAIT(client_ssl_->GetState() == rtc::SS_CLOSED, | 
 |                        handshake_wait_); | 
 |     } | 
 |   } | 
 |  | 
 |   // This tests that we give up after 12 DTLS resends. | 
 |   void TestHandshakeTimeout() { | 
 |     rtc::ScopedFakeClock clock; | 
 |     int64_t time_start = clock.TimeNanos(); | 
 |     webrtc::TimeDelta time_increment = webrtc::TimeDelta::Millis(1000); | 
 |     server_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |     client_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |  | 
 |     if (!dtls_) { | 
 |       // Make sure we simulate a reliable network for TLS. | 
 |       // This is just a check to make sure that people don't write wrong | 
 |       // tests. | 
 |       RTC_CHECK_EQ(1460, mtu_); | 
 |       RTC_CHECK(!loss_); | 
 |       RTC_CHECK(!lose_first_packet_); | 
 |     } | 
 |  | 
 |     if (!identities_set_) | 
 |       SetPeerIdentitiesByDigest(true, true); | 
 |  | 
 |     // Start the handshake | 
 |     int rv; | 
 |  | 
 |     server_ssl_->SetServerRole(); | 
 |     rv = server_ssl_->StartSSL(); | 
 |     ASSERT_EQ(0, rv); | 
 |  | 
 |     rv = client_ssl_->StartSSL(); | 
 |     ASSERT_EQ(0, rv); | 
 |  | 
 |     // Now wait for the handshake to timeout (or fail after an hour of simulated | 
 |     // time). | 
 |     while (client_ssl_->GetState() == rtc::SS_OPENING && | 
 |            (rtc::TimeDiff(clock.TimeNanos(), time_start) < | 
 |             3600 * rtc::kNumNanosecsPerSec)) { | 
 |       EXPECT_TRUE_WAIT(!((client_ssl_->GetState() == rtc::SS_OPEN) && | 
 |                          (server_ssl_->GetState() == rtc::SS_OPEN)), | 
 |                        1000); | 
 |       clock.AdvanceTime(time_increment); | 
 |     } | 
 |     RTC_CHECK_EQ(client_ssl_->GetState(), rtc::SS_CLOSED); | 
 |   } | 
 |  | 
 |   // This tests that the handshake can complete before the identity is verified, | 
 |   // and the identity will be verified after the fact. It also verifies that | 
 |   // packets can't be read or written before the identity has been verified. | 
 |   void TestHandshakeWithDelayedIdentity(bool valid_identity) { | 
 |     server_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |     client_ssl_->SetMode(dtls_ ? rtc::SSL_MODE_DTLS : rtc::SSL_MODE_TLS); | 
 |  | 
 |     if (!dtls_) { | 
 |       // Make sure we simulate a reliable network for TLS. | 
 |       // This is just a check to make sure that people don't write wrong | 
 |       // tests. | 
 |       RTC_CHECK_EQ(1460, mtu_); | 
 |       RTC_CHECK(!loss_); | 
 |       RTC_CHECK(!lose_first_packet_); | 
 |     } | 
 |  | 
 |     // Start the handshake | 
 |     server_ssl_->SetServerRole(); | 
 |     ASSERT_EQ(0, server_ssl_->StartSSL()); | 
 |     ASSERT_EQ(0, client_ssl_->StartSSL()); | 
 |  | 
 |     // Now run the handshake. | 
 |     EXPECT_TRUE_WAIT( | 
 |         client_ssl_->IsTlsConnected() && server_ssl_->IsTlsConnected(), | 
 |         handshake_wait_); | 
 |  | 
 |     // Until the identity has been verified, the state should still be | 
 |     // SS_OPENING and writes should return SR_BLOCK. | 
 |     EXPECT_EQ(rtc::SS_OPENING, client_ssl_->GetState()); | 
 |     EXPECT_EQ(rtc::SS_OPENING, server_ssl_->GetState()); | 
 |     uint8_t packet[1]; | 
 |     size_t sent; | 
 |     int error; | 
 |     EXPECT_EQ(rtc::SR_BLOCK, client_ssl_->Write(packet, sent, error)); | 
 |     EXPECT_EQ(rtc::SR_BLOCK, server_ssl_->Write(packet, sent, error)); | 
 |  | 
 |     // Collect both of the certificate digests; needs to be done before calling | 
 |     // SetPeerCertificateDigest as that may reset the identity. | 
 |     unsigned char server_digest[20]; | 
 |     size_t server_digest_len; | 
 |     unsigned char client_digest[20]; | 
 |     size_t client_digest_len; | 
 |     bool rv; | 
 |  | 
 |     rv = server_identity()->certificate().ComputeDigest( | 
 |         rtc::DIGEST_SHA_1, server_digest, 20, &server_digest_len); | 
 |     ASSERT_TRUE(rv); | 
 |     rv = client_identity()->certificate().ComputeDigest( | 
 |         rtc::DIGEST_SHA_1, client_digest, 20, &client_digest_len); | 
 |     ASSERT_TRUE(rv); | 
 |  | 
 |     if (!valid_identity) { | 
 |       RTC_LOG(LS_INFO) << "Setting bogus digest for client/server certs"; | 
 |       client_digest[0]++; | 
 |       server_digest[0]++; | 
 |     } | 
 |  | 
 |     // Set the peer certificate digest for the client. | 
 |     rtc::SSLPeerCertificateDigestError err; | 
 |     rtc::SSLPeerCertificateDigestError expected_err = | 
 |         valid_identity | 
 |             ? rtc::SSLPeerCertificateDigestError::NONE | 
 |             : rtc::SSLPeerCertificateDigestError::VERIFICATION_FAILED; | 
 |     rv = client_ssl_->SetPeerCertificateDigest(rtc::DIGEST_SHA_1, server_digest, | 
 |                                                server_digest_len, &err); | 
 |     EXPECT_EQ(expected_err, err); | 
 |     EXPECT_EQ(valid_identity, rv); | 
 |     // State should then transition to SS_OPEN or SS_CLOSED based on validation | 
 |     // of the identity. | 
 |     if (valid_identity) { | 
 |       EXPECT_EQ(rtc::SS_OPEN, client_ssl_->GetState()); | 
 |       // If the client sends a packet while the server still hasn't verified the | 
 |       // client identity, the server should continue to return SR_BLOCK. | 
 |       int error; | 
 |       EXPECT_EQ(rtc::SR_SUCCESS, client_ssl_->Write(packet, sent, error)); | 
 |       size_t read; | 
 |       EXPECT_EQ(rtc::SR_BLOCK, server_ssl_->Read(packet, read, error)); | 
 |     } else { | 
 |       EXPECT_EQ(rtc::SS_CLOSED, client_ssl_->GetState()); | 
 |     } | 
 |  | 
 |     // Set the peer certificate digest for the server. | 
 |     rv = server_ssl_->SetPeerCertificateDigest(rtc::DIGEST_SHA_1, client_digest, | 
 |                                                client_digest_len, &err); | 
 |     EXPECT_EQ(expected_err, err); | 
 |     EXPECT_EQ(valid_identity, rv); | 
 |     if (valid_identity) { | 
 |       EXPECT_EQ(rtc::SS_OPEN, server_ssl_->GetState()); | 
 |     } else { | 
 |       EXPECT_EQ(rtc::SS_CLOSED, server_ssl_->GetState()); | 
 |     } | 
 |   } | 
 |  | 
 |   rtc::StreamResult DataWritten(SSLDummyStreamBase* from, | 
 |                                 const void* data, | 
 |                                 size_t data_len, | 
 |                                 size_t& written, | 
 |                                 int& error) { | 
 |     // Randomly drop loss_ percent of packets | 
 |     if (rtc::CreateRandomId() % 100 < static_cast<uint32_t>(loss_)) { | 
 |       RTC_LOG(LS_VERBOSE) << "Randomly dropping packet, size=" << data_len; | 
 |       written = data_len; | 
 |       return rtc::SR_SUCCESS; | 
 |     } | 
 |     if (dtls_ && (data_len > mtu_)) { | 
 |       RTC_LOG(LS_VERBOSE) << "Dropping packet > mtu, size=" << data_len; | 
 |       written = data_len; | 
 |       return rtc::SR_SUCCESS; | 
 |     } | 
 |  | 
 |     // Optionally damage application data (type 23). Note that we don't damage | 
 |     // handshake packets and we damage the last byte to keep the header | 
 |     // intact but break the MAC. | 
 |     if (damage_ && (*static_cast<const unsigned char*>(data) == 23)) { | 
 |       std::vector<uint8_t> buf(data_len); | 
 |  | 
 |       RTC_LOG(LS_VERBOSE) << "Damaging packet"; | 
 |  | 
 |       memcpy(&buf[0], data, data_len); | 
 |       buf[data_len - 1]++; | 
 |       return from->WriteData(rtc::MakeArrayView(&buf[0], data_len), written, | 
 |                              error); | 
 |     } | 
 |  | 
 |     return from->WriteData( | 
 |         rtc::MakeArrayView(reinterpret_cast<const uint8_t*>(data), data_len), | 
 |         written, error); | 
 |   } | 
 |  | 
 |   void SetDelay(int delay) { delay_ = delay; } | 
 |   int GetDelay() { return delay_; } | 
 |  | 
 |   void SetLoseFirstPacket(bool lose) { lose_first_packet_ = lose; } | 
 |   bool GetLoseFirstPacket() { return lose_first_packet_; } | 
 |  | 
 |   void SetLoss(int percent) { loss_ = percent; } | 
 |  | 
 |   void SetDamage() { damage_ = true; } | 
 |  | 
 |   void SetMtu(size_t mtu) { mtu_ = mtu; } | 
 |  | 
 |   void SetHandshakeWait(int wait) { handshake_wait_ = wait; } | 
 |  | 
 |   void SetDtlsSrtpCryptoSuites(const std::vector<int>& ciphers, bool client) { | 
 |     if (client) | 
 |       client_ssl_->SetDtlsSrtpCryptoSuites(ciphers); | 
 |     else | 
 |       server_ssl_->SetDtlsSrtpCryptoSuites(ciphers); | 
 |   } | 
 |  | 
 |   bool GetDtlsSrtpCryptoSuite(bool client, int* retval) { | 
 |     if (client) | 
 |       return client_ssl_->GetDtlsSrtpCryptoSuite(retval); | 
 |     else | 
 |       return server_ssl_->GetDtlsSrtpCryptoSuite(retval); | 
 |   } | 
 |  | 
 |   std::unique_ptr<rtc::SSLCertificate> GetPeerCertificate(bool client) { | 
 |     std::unique_ptr<rtc::SSLCertChain> chain; | 
 |     if (client) | 
 |       chain = client_ssl_->GetPeerSSLCertChain(); | 
 |     else | 
 |       chain = server_ssl_->GetPeerSSLCertChain(); | 
 |     return (chain && chain->GetSize()) ? chain->Get(0).Clone() : nullptr; | 
 |   } | 
 |  | 
 |   bool GetSslCipherSuite(bool client, int* retval) { | 
 |     if (client) | 
 |       return client_ssl_->GetSslCipherSuite(retval); | 
 |     else | 
 |       return server_ssl_->GetSslCipherSuite(retval); | 
 |   } | 
 |  | 
 |   int GetSslVersion(bool client) { | 
 |     if (client) | 
 |       return client_ssl_->GetSslVersion(); | 
 |     else | 
 |       return server_ssl_->GetSslVersion(); | 
 |   } | 
 |  | 
 |   bool ExportKeyingMaterial(absl::string_view label, | 
 |                             const unsigned char* context, | 
 |                             size_t context_len, | 
 |                             bool use_context, | 
 |                             bool client, | 
 |                             unsigned char* result, | 
 |                             size_t result_len) { | 
 |     if (client) | 
 |       return client_ssl_->ExportKeyingMaterial(label, context, context_len, | 
 |                                                use_context, result, result_len); | 
 |     else | 
 |       return server_ssl_->ExportKeyingMaterial(label, context, context_len, | 
 |                                                use_context, result, result_len); | 
 |   } | 
 |  | 
 |   // To be implemented by subclasses. | 
 |   virtual void WriteData() = 0; | 
 |   virtual void ReadData(rtc::StreamInterface* stream) = 0; | 
 |   virtual void TestTransfer(int size) = 0; | 
 |  | 
 |  protected: | 
 |   rtc::SSLIdentity* client_identity() const { | 
 |     if (!client_ssl_) { | 
 |       return nullptr; | 
 |     } | 
 |     return client_ssl_->GetIdentityForTesting(); | 
 |   } | 
 |   rtc::SSLIdentity* server_identity() const { | 
 |     if (!server_ssl_) { | 
 |       return nullptr; | 
 |     } | 
 |     return server_ssl_->GetIdentityForTesting(); | 
 |   } | 
 |  | 
 |   rtc::AutoThread main_thread_; | 
 |   std::string client_cert_pem_; | 
 |   std::string client_private_key_pem_; | 
 |   rtc::KeyParams client_key_type_; | 
 |   rtc::KeyParams server_key_type_; | 
 |   SSLDummyStreamBase* client_stream_;  // freed by client_ssl_ destructor | 
 |   SSLDummyStreamBase* server_stream_;  // freed by server_ssl_ destructor | 
 |   std::unique_ptr<rtc::SSLStreamAdapter> client_ssl_; | 
 |   std::unique_ptr<rtc::SSLStreamAdapter> server_ssl_; | 
 |   int delay_; | 
 |   size_t mtu_; | 
 |   int loss_; | 
 |   bool lose_first_packet_; | 
 |   bool damage_; | 
 |   bool dtls_; | 
 |   int handshake_wait_; | 
 |   bool identities_set_; | 
 | }; | 
 |  | 
 | class SSLStreamAdapterTestTLS | 
 |     : public SSLStreamAdapterTestBase, | 
 |       public WithParamInterface<tuple<rtc::KeyParams, rtc::KeyParams>> { | 
 |  public: | 
 |   SSLStreamAdapterTestTLS() | 
 |       : SSLStreamAdapterTestBase("", | 
 |                                  "", | 
 |                                  false, | 
 |                                  ::testing::get<0>(GetParam()), | 
 |                                  ::testing::get<1>(GetParam())), | 
 |         client_buffer_(kFifoBufferSize), | 
 |         server_buffer_(kFifoBufferSize) {} | 
 |  | 
 |   void CreateStreams() override { | 
 |     client_stream_ = | 
 |         new SSLDummyStreamTLS(this, "c2s", &client_buffer_, &server_buffer_); | 
 |     server_stream_ = | 
 |         new SSLDummyStreamTLS(this, "s2c", &server_buffer_, &client_buffer_); | 
 |   } | 
 |  | 
 |   // Test data transfer for TLS | 
 |   void TestTransfer(int size) override { | 
 |     RTC_LOG(LS_INFO) << "Starting transfer test with " << size << " bytes"; | 
 |     // Create some dummy data to send. | 
 |     size_t received; | 
 |  | 
 |     send_stream_.ReserveSize(size); | 
 |     for (int i = 0; i < size; ++i) { | 
 |       uint8_t ch = static_cast<uint8_t>(i); | 
 |       size_t written; | 
 |       int error; | 
 |       send_stream_.Write(rtc::MakeArrayView(&ch, 1), written, error); | 
 |     } | 
 |     send_stream_.Rewind(); | 
 |  | 
 |     // Prepare the receive stream. | 
 |     recv_stream_.ReserveSize(size); | 
 |  | 
 |     // Start sending | 
 |     WriteData(); | 
 |  | 
 |     // Wait for the client to close | 
 |     EXPECT_TRUE_WAIT(server_ssl_->GetState() == rtc::SS_CLOSED, 10000); | 
 |  | 
 |     // Now check the data | 
 |     recv_stream_.GetSize(&received); | 
 |  | 
 |     EXPECT_EQ(static_cast<size_t>(size), received); | 
 |     EXPECT_EQ(0, | 
 |               memcmp(send_stream_.GetBuffer(), recv_stream_.GetBuffer(), size)); | 
 |   } | 
 |  | 
 |   void WriteData() override { | 
 |     size_t position, tosend, size; | 
 |     rtc::StreamResult rv; | 
 |     size_t sent; | 
 |     uint8_t block[kBlockSize]; | 
 |  | 
 |     send_stream_.GetSize(&size); | 
 |     if (!size) | 
 |       return; | 
 |  | 
 |     for (;;) { | 
 |       send_stream_.GetPosition(&position); | 
 |       int dummy_error; | 
 |       if (send_stream_.Read(block, tosend, dummy_error) != rtc::SR_EOS) { | 
 |         int error; | 
 |         rv = client_ssl_->Write(rtc::MakeArrayView(block, tosend), sent, error); | 
 |  | 
 |         if (rv == rtc::SR_SUCCESS) { | 
 |           send_stream_.SetPosition(position + sent); | 
 |           RTC_LOG(LS_VERBOSE) << "Sent: " << position + sent; | 
 |         } else if (rv == rtc::SR_BLOCK) { | 
 |           RTC_LOG(LS_VERBOSE) << "Blocked..."; | 
 |           send_stream_.SetPosition(position); | 
 |           break; | 
 |         } else { | 
 |           ADD_FAILURE(); | 
 |           break; | 
 |         } | 
 |       } else { | 
 |         // Now close | 
 |         RTC_LOG(LS_INFO) << "Wrote " << position << " bytes. Closing"; | 
 |         client_ssl_->Close(); | 
 |         break; | 
 |       } | 
 |     } | 
 |   } | 
 |  | 
 |   void ReadData(rtc::StreamInterface* stream) override { | 
 |     uint8_t buffer[1600]; | 
 |     size_t bread; | 
 |     int err2; | 
 |     rtc::StreamResult r; | 
 |  | 
 |     for (;;) { | 
 |       r = stream->Read(buffer, bread, err2); | 
 |  | 
 |       if (r == rtc::SR_ERROR || r == rtc::SR_EOS) { | 
 |         // Unfortunately, errors are the way that the stream adapter | 
 |         // signals close in OpenSSL. | 
 |         stream->Close(); | 
 |         return; | 
 |       } | 
 |  | 
 |       if (r == rtc::SR_BLOCK) | 
 |         break; | 
 |  | 
 |       ASSERT_EQ(rtc::SR_SUCCESS, r); | 
 |       RTC_LOG(LS_VERBOSE) << "Read " << bread; | 
 |       size_t written; | 
 |       int error; | 
 |       recv_stream_.Write(rtc::MakeArrayView(buffer, bread), written, error); | 
 |     } | 
 |   } | 
 |  | 
 |  private: | 
 |   rtc::FifoBuffer client_buffer_; | 
 |   rtc::FifoBuffer server_buffer_; | 
 |   rtc::MemoryStream send_stream_; | 
 |   rtc::MemoryStream recv_stream_; | 
 | }; | 
 |  | 
 | class SSLStreamAdapterTestDTLSBase : public SSLStreamAdapterTestBase { | 
 |  public: | 
 |   SSLStreamAdapterTestDTLSBase(rtc::KeyParams param1, rtc::KeyParams param2) | 
 |       : SSLStreamAdapterTestBase("", "", true, param1, param2), | 
 |         client_buffer_(kBufferCapacity, kDefaultBufferSize), | 
 |         server_buffer_(kBufferCapacity, kDefaultBufferSize), | 
 |         packet_size_(1000), | 
 |         count_(0), | 
 |         sent_(0) {} | 
 |  | 
 |   SSLStreamAdapterTestDTLSBase(absl::string_view cert_pem, | 
 |                                absl::string_view private_key_pem) | 
 |       : SSLStreamAdapterTestBase(cert_pem, private_key_pem, true), | 
 |         client_buffer_(kBufferCapacity, kDefaultBufferSize), | 
 |         server_buffer_(kBufferCapacity, kDefaultBufferSize), | 
 |         packet_size_(1000), | 
 |         count_(0), | 
 |         sent_(0) {} | 
 |  | 
 |   void CreateStreams() override { | 
 |     client_stream_ = | 
 |         new SSLDummyStreamDTLS(this, "c2s", &client_buffer_, &server_buffer_); | 
 |     server_stream_ = | 
 |         new SSLDummyStreamDTLS(this, "s2c", &server_buffer_, &client_buffer_); | 
 |   } | 
 |  | 
 |   void WriteData() override { | 
 |     uint8_t* packet = new uint8_t[1600]; | 
 |  | 
 |     while (sent_ < count_) { | 
 |       unsigned int rand_state = sent_; | 
 |       packet[0] = sent_; | 
 |       for (size_t i = 1; i < packet_size_; i++) { | 
 |         // This is a simple LC PRNG.  Keep in synch with identical code below. | 
 |         rand_state = (rand_state * 251 + 19937) >> 7; | 
 |         packet[i] = rand_state & 0xff; | 
 |       } | 
 |  | 
 |       size_t sent; | 
 |       int error; | 
 |       rtc::StreamResult rv = client_ssl_->Write( | 
 |           rtc::MakeArrayView(packet, packet_size_), sent, error); | 
 |       if (rv == rtc::SR_SUCCESS) { | 
 |         RTC_LOG(LS_VERBOSE) << "Sent: " << sent_; | 
 |         sent_++; | 
 |       } else if (rv == rtc::SR_BLOCK) { | 
 |         RTC_LOG(LS_VERBOSE) << "Blocked..."; | 
 |         break; | 
 |       } else { | 
 |         ADD_FAILURE(); | 
 |         break; | 
 |       } | 
 |     } | 
 |  | 
 |     delete[] packet; | 
 |   } | 
 |  | 
 |   void ReadData(rtc::StreamInterface* stream) override { | 
 |     uint8_t buffer[2000]; | 
 |     size_t bread; | 
 |     int err2; | 
 |     rtc::StreamResult r; | 
 |  | 
 |     for (;;) { | 
 |       r = stream->Read(buffer, bread, err2); | 
 |  | 
 |       if (r == rtc::SR_ERROR) { | 
 |         // Unfortunately, errors are the way that the stream adapter | 
 |         // signals close right now | 
 |         stream->Close(); | 
 |         return; | 
 |       } | 
 |  | 
 |       if (r == rtc::SR_BLOCK) | 
 |         break; | 
 |  | 
 |       ASSERT_EQ(rtc::SR_SUCCESS, r); | 
 |       RTC_LOG(LS_VERBOSE) << "Read " << bread; | 
 |  | 
 |       // Now parse the datagram | 
 |       ASSERT_EQ(packet_size_, bread); | 
 |       unsigned char packet_num = buffer[0]; | 
 |  | 
 |       unsigned int rand_state = packet_num; | 
 |       for (size_t i = 1; i < packet_size_; i++) { | 
 |         // This is a simple LC PRNG.  Keep in synch with identical code above. | 
 |         rand_state = (rand_state * 251 + 19937) >> 7; | 
 |         ASSERT_EQ(rand_state & 0xff, buffer[i]); | 
 |       } | 
 |       received_.insert(packet_num); | 
 |     } | 
 |   } | 
 |  | 
 |   void TestTransfer(int count) override { | 
 |     count_ = count; | 
 |  | 
 |     WriteData(); | 
 |  | 
 |     EXPECT_TRUE_WAIT(sent_ == count_, 10000); | 
 |     RTC_LOG(LS_INFO) << "sent_ == " << sent_; | 
 |  | 
 |     if (damage_) { | 
 |       WAIT(false, 2000); | 
 |       EXPECT_EQ(0U, received_.size()); | 
 |     } else if (loss_ == 0) { | 
 |       EXPECT_EQ_WAIT(static_cast<size_t>(sent_), received_.size(), 1000); | 
 |     } else { | 
 |       RTC_LOG(LS_INFO) << "Sent " << sent_ << " packets; received " | 
 |                        << received_.size(); | 
 |     } | 
 |   } | 
 |  | 
 |  protected: | 
 |   BufferQueueStream client_buffer_; | 
 |   BufferQueueStream server_buffer_; | 
 |  | 
 |  private: | 
 |   size_t packet_size_; | 
 |   int count_; | 
 |   int sent_; | 
 |   std::set<int> received_; | 
 | }; | 
 |  | 
 | class SSLStreamAdapterTestDTLS | 
 |     : public SSLStreamAdapterTestDTLSBase, | 
 |       public WithParamInterface<tuple<rtc::KeyParams, rtc::KeyParams>> { | 
 |  public: | 
 |   SSLStreamAdapterTestDTLS() | 
 |       : SSLStreamAdapterTestDTLSBase(::testing::get<0>(GetParam()), | 
 |                                      ::testing::get<1>(GetParam())) {} | 
 |  | 
 |   SSLStreamAdapterTestDTLS(absl::string_view cert_pem, | 
 |                            absl::string_view private_key_pem) | 
 |       : SSLStreamAdapterTestDTLSBase(cert_pem, private_key_pem) {} | 
 | }; | 
 |  | 
 | rtc::StreamResult SSLDummyStreamBase::Write(rtc::ArrayView<const uint8_t> data, | 
 |                                             size_t& written, | 
 |                                             int& error) { | 
 |   RTC_LOG(LS_VERBOSE) << "Writing to loopback " << data.size(); | 
 |  | 
 |   if (first_packet_) { | 
 |     first_packet_ = false; | 
 |     if (test_base_->GetLoseFirstPacket()) { | 
 |       RTC_LOG(LS_INFO) << "Losing initial packet of length " << data.size(); | 
 |       written = data.size();  // Fake successful writing also to writer. | 
 |       return rtc::SR_SUCCESS; | 
 |     } | 
 |   } | 
 |  | 
 |   return test_base_->DataWritten(this, data.data(), data.size(), written, | 
 |                                  error); | 
 | } | 
 |  | 
 | class SSLStreamAdapterTestDTLSFromPEMStrings : public SSLStreamAdapterTestDTLS { | 
 |  public: | 
 |   SSLStreamAdapterTestDTLSFromPEMStrings() | 
 |       : SSLStreamAdapterTestDTLS(kCERT_PEM, kRSA_PRIVATE_KEY_PEM) {} | 
 | }; | 
 |  | 
 | // Test fixture for certificate chaining. Server will push more than one | 
 | // certificate. | 
 | class SSLStreamAdapterTestDTLSCertChain : public SSLStreamAdapterTestDTLS { | 
 |  public: | 
 |   SSLStreamAdapterTestDTLSCertChain() : SSLStreamAdapterTestDTLS("", "") {} | 
 |   void SetUp() override { | 
 |     CreateStreams(); | 
 |  | 
 |     client_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(client_stream_)); | 
 |     server_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(server_stream_)); | 
 |  | 
 |     // Set up the slots | 
 |     client_ssl_->SignalEvent.connect( | 
 |         reinterpret_cast<SSLStreamAdapterTestBase*>(this), | 
 |         &SSLStreamAdapterTestBase::OnEvent); | 
 |     server_ssl_->SignalEvent.connect( | 
 |         reinterpret_cast<SSLStreamAdapterTestBase*>(this), | 
 |         &SSLStreamAdapterTestBase::OnEvent); | 
 |  | 
 |     std::unique_ptr<rtc::SSLIdentity> client_identity; | 
 |     if (!client_cert_pem_.empty() && !client_private_key_pem_.empty()) { | 
 |       client_identity = rtc::SSLIdentity::CreateFromPEMStrings( | 
 |           client_private_key_pem_, client_cert_pem_); | 
 |     } else { | 
 |       client_identity = rtc::SSLIdentity::Create("client", client_key_type_); | 
 |     } | 
 |  | 
 |     client_ssl_->SetIdentity(std::move(client_identity)); | 
 |   } | 
 | }; | 
 |  | 
 | // Basic tests: TLS | 
 |  | 
 | // Test that we can make a handshake work | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSConnect) { | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestTLS, GetPeerCertChainWithOneCertificate) { | 
 |   TestHandshake(); | 
 |   std::unique_ptr<rtc::SSLCertChain> cert_chain = | 
 |       client_ssl_->GetPeerSSLCertChain(); | 
 |   ASSERT_NE(nullptr, cert_chain); | 
 |   EXPECT_EQ(1u, cert_chain->GetSize()); | 
 |   EXPECT_EQ(cert_chain->Get(0).ToPEMString(), | 
 |             server_identity()->certificate().ToPEMString()); | 
 | } | 
 |  | 
 | TEST_F(SSLStreamAdapterTestDTLSCertChain, TwoCertHandshake) { | 
 |   auto server_identity = rtc::SSLIdentity::CreateFromPEMChainStrings( | 
 |       kRSA_PRIVATE_KEY_PEM, std::string(kCERT_PEM) + kCACert); | 
 |   server_ssl_->SetIdentity(std::move(server_identity)); | 
 |   TestHandshake(); | 
 |   std::unique_ptr<rtc::SSLCertChain> peer_cert_chain = | 
 |       client_ssl_->GetPeerSSLCertChain(); | 
 |   ASSERT_NE(nullptr, peer_cert_chain); | 
 |   ASSERT_EQ(2u, peer_cert_chain->GetSize()); | 
 |   EXPECT_EQ(kCERT_PEM, peer_cert_chain->Get(0).ToPEMString()); | 
 |   EXPECT_EQ(kCACert, peer_cert_chain->Get(1).ToPEMString()); | 
 | } | 
 |  | 
 | TEST_F(SSLStreamAdapterTestDTLSCertChain, TwoCertHandshakeWithCopy) { | 
 |   server_ssl_->SetIdentity(rtc::SSLIdentity::CreateFromPEMChainStrings( | 
 |       kRSA_PRIVATE_KEY_PEM, std::string(kCERT_PEM) + kCACert)); | 
 |   TestHandshake(); | 
 |   std::unique_ptr<rtc::SSLCertChain> peer_cert_chain = | 
 |       client_ssl_->GetPeerSSLCertChain(); | 
 |   ASSERT_NE(nullptr, peer_cert_chain); | 
 |   ASSERT_EQ(2u, peer_cert_chain->GetSize()); | 
 |   EXPECT_EQ(kCERT_PEM, peer_cert_chain->Get(0).ToPEMString()); | 
 |   EXPECT_EQ(kCACert, peer_cert_chain->Get(1).ToPEMString()); | 
 | } | 
 |  | 
 | TEST_F(SSLStreamAdapterTestDTLSCertChain, ThreeCertHandshake) { | 
 |   server_ssl_->SetIdentity(rtc::SSLIdentity::CreateFromPEMChainStrings( | 
 |       kRSA_PRIVATE_KEY_PEM, std::string(kCERT_PEM) + kIntCert1 + kCACert)); | 
 |   TestHandshake(); | 
 |   std::unique_ptr<rtc::SSLCertChain> peer_cert_chain = | 
 |       client_ssl_->GetPeerSSLCertChain(); | 
 |   ASSERT_NE(nullptr, peer_cert_chain); | 
 |   ASSERT_EQ(3u, peer_cert_chain->GetSize()); | 
 |   EXPECT_EQ(kCERT_PEM, peer_cert_chain->Get(0).ToPEMString()); | 
 |   EXPECT_EQ(kIntCert1, peer_cert_chain->Get(1).ToPEMString()); | 
 |   EXPECT_EQ(kCACert, peer_cert_chain->Get(2).ToPEMString()); | 
 | } | 
 |  | 
 | // Test that closing the connection on one side updates the other side. | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSClose) { | 
 |   TestHandshake(); | 
 |   client_ssl_->Close(); | 
 |   EXPECT_EQ_WAIT(rtc::SS_CLOSED, server_ssl_->GetState(), handshake_wait_); | 
 | } | 
 |  | 
 | // Test transfer -- trivial | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSTransfer) { | 
 |   TestHandshake(); | 
 |   TestTransfer(100000); | 
 | } | 
 |  | 
 | // Test read-write after close. | 
 | TEST_P(SSLStreamAdapterTestTLS, ReadWriteAfterClose) { | 
 |   TestHandshake(); | 
 |   TestTransfer(100000); | 
 |   client_ssl_->Close(); | 
 |  | 
 |   rtc::StreamResult rv; | 
 |   uint8_t block[kBlockSize]; | 
 |   size_t dummy; | 
 |   int error; | 
 |  | 
 |   // It's an error to write after closed. | 
 |   rv = client_ssl_->Write(block, dummy, error); | 
 |   ASSERT_EQ(rtc::SR_ERROR, rv); | 
 |  | 
 |   // But after closed read gives you EOS. | 
 |   rv = client_ssl_->Read(block, dummy, error); | 
 |   ASSERT_EQ(rtc::SR_EOS, rv); | 
 | } | 
 |  | 
 | // Test a handshake with a bogus peer digest | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSBogusDigest) { | 
 |   SetPeerIdentitiesByDigest(false, true); | 
 |   TestHandshake(false); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSDelayedIdentity) { | 
 |   TestHandshakeWithDelayedIdentity(true); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestTLS, TestTLSDelayedIdentityWithBogusDigest) { | 
 |   TestHandshakeWithDelayedIdentity(false); | 
 | } | 
 |  | 
 | // Test that the correct error is returned when SetPeerCertificateDigest is | 
 | // called with an unknown algorithm. | 
 | TEST_P(SSLStreamAdapterTestTLS, | 
 |        TestSetPeerCertificateDigestWithUnknownAlgorithm) { | 
 |   unsigned char server_digest[20]; | 
 |   size_t server_digest_len; | 
 |   bool rv; | 
 |   rtc::SSLPeerCertificateDigestError err; | 
 |  | 
 |   rv = server_identity()->certificate().ComputeDigest( | 
 |       rtc::DIGEST_SHA_1, server_digest, 20, &server_digest_len); | 
 |   ASSERT_TRUE(rv); | 
 |  | 
 |   rv = client_ssl_->SetPeerCertificateDigest("unknown algorithm", server_digest, | 
 |                                              server_digest_len, &err); | 
 |   EXPECT_EQ(rtc::SSLPeerCertificateDigestError::UNKNOWN_ALGORITHM, err); | 
 |   EXPECT_FALSE(rv); | 
 | } | 
 |  | 
 | // Test that the correct error is returned when SetPeerCertificateDigest is | 
 | // called with an invalid digest length. | 
 | TEST_P(SSLStreamAdapterTestTLS, TestSetPeerCertificateDigestWithInvalidLength) { | 
 |   unsigned char server_digest[20]; | 
 |   size_t server_digest_len; | 
 |   bool rv; | 
 |   rtc::SSLPeerCertificateDigestError err; | 
 |  | 
 |   rv = server_identity()->certificate().ComputeDigest( | 
 |       rtc::DIGEST_SHA_1, server_digest, 20, &server_digest_len); | 
 |   ASSERT_TRUE(rv); | 
 |  | 
 |   rv = client_ssl_->SetPeerCertificateDigest(rtc::DIGEST_SHA_1, server_digest, | 
 |                                              server_digest_len - 1, &err); | 
 |   EXPECT_EQ(rtc::SSLPeerCertificateDigestError::INVALID_LENGTH, err); | 
 |   EXPECT_FALSE(rv); | 
 | } | 
 |  | 
 | // Test moving a bunch of data | 
 |  | 
 | // Basic tests: DTLS | 
 | // Test that we can make a handshake work | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSConnect) { | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test that we can make a handshake work if the first packet in | 
 | // each direction is lost. This gives us predictable loss | 
 | // rather than having to tune random | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSConnectWithLostFirstPacket) { | 
 |   SetLoseFirstPacket(true); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test a handshake with loss and delay | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSConnectWithLostFirstPacketDelay2s) { | 
 |   SetLoseFirstPacket(true); | 
 |   SetDelay(2000); | 
 |   SetHandshakeWait(20000); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test a handshake with small MTU | 
 | // Disabled due to https://code.google.com/p/webrtc/issues/detail?id=3910 | 
 | TEST_P(SSLStreamAdapterTestDTLS, DISABLED_TestDTLSConnectWithSmallMtu) { | 
 |   SetMtu(700); | 
 |   SetHandshakeWait(20000); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test a handshake with total loss and timing out. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSConnectTimeout) { | 
 |   SetLoss(100); | 
 |   TestHandshakeTimeout(); | 
 | } | 
 |  | 
 | // Test transfer -- trivial | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSTransfer) { | 
 |   TestHandshake(); | 
 |   TestTransfer(100); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSTransferWithLoss) { | 
 |   TestHandshake(); | 
 |   SetLoss(10); | 
 |   TestTransfer(100); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSTransferWithDamage) { | 
 |   SetDamage();  // Must be called first because first packet | 
 |                 // write happens at end of handshake. | 
 |   TestHandshake(); | 
 |   TestTransfer(100); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSDelayedIdentity) { | 
 |   TestHandshakeWithDelayedIdentity(true); | 
 | } | 
 |  | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSDelayedIdentityWithBogusDigest) { | 
 |   TestHandshakeWithDelayedIdentity(false); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with all high ciphers | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpHigh) { | 
 |   std::vector<int> high; | 
 |   high.push_back(rtc::kSrtpAes128CmSha1_80); | 
 |   SetDtlsSrtpCryptoSuites(high, true); | 
 |   SetDtlsSrtpCryptoSuites(high, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAes128CmSha1_80); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with all low ciphers | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpLow) { | 
 |   std::vector<int> low; | 
 |   low.push_back(rtc::kSrtpAes128CmSha1_32); | 
 |   SetDtlsSrtpCryptoSuites(low, true); | 
 |   SetDtlsSrtpCryptoSuites(low, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAes128CmSha1_32); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with a mismatch -- should not converge | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpHighLow) { | 
 |   std::vector<int> high; | 
 |   high.push_back(rtc::kSrtpAes128CmSha1_80); | 
 |   std::vector<int> low; | 
 |   low.push_back(rtc::kSrtpAes128CmSha1_32); | 
 |   SetDtlsSrtpCryptoSuites(high, true); | 
 |   SetDtlsSrtpCryptoSuites(low, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_FALSE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_FALSE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with each side being mixed -- should select high | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpMixed) { | 
 |   std::vector<int> mixed; | 
 |   mixed.push_back(rtc::kSrtpAes128CmSha1_80); | 
 |   mixed.push_back(rtc::kSrtpAes128CmSha1_32); | 
 |   SetDtlsSrtpCryptoSuites(mixed, true); | 
 |   SetDtlsSrtpCryptoSuites(mixed, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAes128CmSha1_80); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with all GCM-128 ciphers. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpGCM128) { | 
 |   std::vector<int> gcm128; | 
 |   gcm128.push_back(rtc::kSrtpAeadAes128Gcm); | 
 |   SetDtlsSrtpCryptoSuites(gcm128, true); | 
 |   SetDtlsSrtpCryptoSuites(gcm128, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAeadAes128Gcm); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with all GCM-256 ciphers. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpGCM256) { | 
 |   std::vector<int> gcm256; | 
 |   gcm256.push_back(rtc::kSrtpAeadAes256Gcm); | 
 |   SetDtlsSrtpCryptoSuites(gcm256, true); | 
 |   SetDtlsSrtpCryptoSuites(gcm256, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAeadAes256Gcm); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with mixed GCM-128/-256 ciphers -- should not converge. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpGCMMismatch) { | 
 |   std::vector<int> gcm128; | 
 |   gcm128.push_back(rtc::kSrtpAeadAes128Gcm); | 
 |   std::vector<int> gcm256; | 
 |   gcm256.push_back(rtc::kSrtpAeadAes256Gcm); | 
 |   SetDtlsSrtpCryptoSuites(gcm128, true); | 
 |   SetDtlsSrtpCryptoSuites(gcm256, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_FALSE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_FALSE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 | } | 
 |  | 
 | // Test DTLS-SRTP with both GCM-128/-256 ciphers -- should select GCM-256. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpGCMMixed) { | 
 |   std::vector<int> gcmBoth; | 
 |   gcmBoth.push_back(rtc::kSrtpAeadAes256Gcm); | 
 |   gcmBoth.push_back(rtc::kSrtpAeadAes128Gcm); | 
 |   SetDtlsSrtpCryptoSuites(gcmBoth, true); | 
 |   SetDtlsSrtpCryptoSuites(gcmBoth, false); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetDtlsSrtpCryptoSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_EQ(client_cipher, rtc::kSrtpAeadAes256Gcm); | 
 | } | 
 |  | 
 | // Test SRTP cipher suite lengths. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSSrtpKeyAndSaltLengths) { | 
 |   int key_len; | 
 |   int salt_len; | 
 |  | 
 |   ASSERT_FALSE(rtc::GetSrtpKeyAndSaltLengths(rtc::kSrtpInvalidCryptoSuite, | 
 |                                              &key_len, &salt_len)); | 
 |  | 
 |   ASSERT_TRUE(rtc::GetSrtpKeyAndSaltLengths(rtc::kSrtpAes128CmSha1_32, &key_len, | 
 |                                             &salt_len)); | 
 |   ASSERT_EQ(128 / 8, key_len); | 
 |   ASSERT_EQ(112 / 8, salt_len); | 
 |  | 
 |   ASSERT_TRUE(rtc::GetSrtpKeyAndSaltLengths(rtc::kSrtpAes128CmSha1_80, &key_len, | 
 |                                             &salt_len)); | 
 |   ASSERT_EQ(128 / 8, key_len); | 
 |   ASSERT_EQ(112 / 8, salt_len); | 
 |  | 
 |   ASSERT_TRUE(rtc::GetSrtpKeyAndSaltLengths(rtc::kSrtpAeadAes128Gcm, &key_len, | 
 |                                             &salt_len)); | 
 |   ASSERT_EQ(128 / 8, key_len); | 
 |   ASSERT_EQ(96 / 8, salt_len); | 
 |  | 
 |   ASSERT_TRUE(rtc::GetSrtpKeyAndSaltLengths(rtc::kSrtpAeadAes256Gcm, &key_len, | 
 |                                             &salt_len)); | 
 |   ASSERT_EQ(256 / 8, key_len); | 
 |   ASSERT_EQ(96 / 8, salt_len); | 
 | } | 
 |  | 
 | // Test an exporter | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestDTLSExporter) { | 
 |   TestHandshake(); | 
 |   unsigned char client_out[20]; | 
 |   unsigned char server_out[20]; | 
 |  | 
 |   bool result; | 
 |   result = ExportKeyingMaterial(kExporterLabel, kExporterContext, | 
 |                                 kExporterContextLen, true, true, client_out, | 
 |                                 sizeof(client_out)); | 
 |   ASSERT_TRUE(result); | 
 |  | 
 |   result = ExportKeyingMaterial(kExporterLabel, kExporterContext, | 
 |                                 kExporterContextLen, true, false, server_out, | 
 |                                 sizeof(server_out)); | 
 |   ASSERT_TRUE(result); | 
 |  | 
 |   ASSERT_TRUE(!memcmp(client_out, server_out, sizeof(client_out))); | 
 | } | 
 |  | 
 | // Test not yet valid certificates are not rejected. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestCertNotYetValid) { | 
 |   long one_day = 60 * 60 * 24; | 
 |   // Make the certificates not valid until one day later. | 
 |   ResetIdentitiesWithValidity(one_day, one_day); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test expired certificates are not rejected. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestCertExpired) { | 
 |   long one_day = 60 * 60 * 24; | 
 |   // Make the certificates already expired. | 
 |   ResetIdentitiesWithValidity(-one_day, -one_day); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Test data transfer using certs created from strings. | 
 | TEST_F(SSLStreamAdapterTestDTLSFromPEMStrings, TestTransfer) { | 
 |   TestHandshake(); | 
 |   TestTransfer(100); | 
 | } | 
 |  | 
 | // Test getting the remote certificate. | 
 | TEST_F(SSLStreamAdapterTestDTLSFromPEMStrings, TestDTLSGetPeerCertificate) { | 
 |   // Peer certificates haven't been received yet. | 
 |   ASSERT_FALSE(GetPeerCertificate(true)); | 
 |   ASSERT_FALSE(GetPeerCertificate(false)); | 
 |  | 
 |   TestHandshake(); | 
 |  | 
 |   // The client should have a peer certificate after the handshake. | 
 |   std::unique_ptr<rtc::SSLCertificate> client_peer_cert = | 
 |       GetPeerCertificate(true); | 
 |   ASSERT_TRUE(client_peer_cert); | 
 |  | 
 |   // It's not kCERT_PEM. | 
 |   std::string client_peer_string = client_peer_cert->ToPEMString(); | 
 |   ASSERT_NE(kCERT_PEM, client_peer_string); | 
 |  | 
 |   // The server should have a peer certificate after the handshake. | 
 |   std::unique_ptr<rtc::SSLCertificate> server_peer_cert = | 
 |       GetPeerCertificate(false); | 
 |   ASSERT_TRUE(server_peer_cert); | 
 |  | 
 |   // It's kCERT_PEM | 
 |   ASSERT_EQ(kCERT_PEM, server_peer_cert->ToPEMString()); | 
 | } | 
 |  | 
 | // Test getting the used DTLS 1.2 ciphers. | 
 | // DTLS 1.2 enabled for client and server -> DTLS 1.2 will be used. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestGetSslCipherSuiteDtls12Both) { | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_12, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_TRUE(rtc::SSLStreamAdapter::IsAcceptableCipher( | 
 |       server_cipher, ::testing::get<1>(GetParam()).type())); | 
 | } | 
 |  | 
 | // Test getting the used DTLS ciphers. | 
 | // DTLS 1.2 is max version for client and server. | 
 | TEST_P(SSLStreamAdapterTestDTLS, TestGetSslCipherSuite) { | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_12, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 |   ASSERT_TRUE(rtc::SSLStreamAdapter::IsAcceptableCipher( | 
 |       server_cipher, ::testing::get<1>(GetParam()).type())); | 
 | } | 
 |  | 
 | // The RSA keysizes here might look strange, why not include the RFC's size | 
 | // 2048?. The reason is test case slowness; testing two sizes to exercise | 
 | // parametrization is sufficient. | 
 | INSTANTIATE_TEST_SUITE_P( | 
 |     SSLStreamAdapterTestsTLS, | 
 |     SSLStreamAdapterTestTLS, | 
 |     Combine(Values(rtc::KeyParams::RSA(1024, 65537), | 
 |                    rtc::KeyParams::RSA(1152, 65537), | 
 |                    rtc::KeyParams::ECDSA(rtc::EC_NIST_P256)), | 
 |             Values(rtc::KeyParams::RSA(1024, 65537), | 
 |                    rtc::KeyParams::RSA(1152, 65537), | 
 |                    rtc::KeyParams::ECDSA(rtc::EC_NIST_P256)))); | 
 | INSTANTIATE_TEST_SUITE_P( | 
 |     SSLStreamAdapterTestsDTLS, | 
 |     SSLStreamAdapterTestDTLS, | 
 |     Combine(Values(rtc::KeyParams::RSA(1024, 65537), | 
 |                    rtc::KeyParams::RSA(1152, 65537), | 
 |                    rtc::KeyParams::ECDSA(rtc::EC_NIST_P256)), | 
 |             Values(rtc::KeyParams::RSA(1024, 65537), | 
 |                    rtc::KeyParams::RSA(1152, 65537), | 
 |                    rtc::KeyParams::ECDSA(rtc::EC_NIST_P256)))); | 
 |  | 
 | // Tests for enabling / disabling legacy TLS protocols in DTLS. | 
 | class SSLStreamAdapterTestDTLSLegacyProtocols | 
 |     : public SSLStreamAdapterTestDTLSBase { | 
 |  public: | 
 |   SSLStreamAdapterTestDTLSLegacyProtocols() | 
 |       : SSLStreamAdapterTestDTLSBase(rtc::KeyParams::ECDSA(rtc::EC_NIST_P256), | 
 |                                      rtc::KeyParams::ECDSA(rtc::EC_NIST_P256)) { | 
 |   } | 
 |  | 
 |   // Do not use the SetUp version from the parent class. | 
 |   void SetUp() override {} | 
 |  | 
 |   // The legacy TLS protocols flag is read when the OpenSSLStreamAdapter is | 
 |   // initialized, so we set the experiment while creationg client_ssl_ | 
 |   // and server_ssl_. | 
 |  | 
 |   void ConfigureClient(absl::string_view experiment) { | 
 |     webrtc::test::ScopedFieldTrials trial{std::string(experiment)}; | 
 |     client_stream_ = | 
 |         new SSLDummyStreamDTLS(this, "c2s", &client_buffer_, &server_buffer_); | 
 |     client_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(client_stream_)); | 
 |     client_ssl_->SignalEvent.connect( | 
 |         static_cast<SSLStreamAdapterTestBase*>(this), | 
 |         &SSLStreamAdapterTestBase::OnEvent); | 
 |     auto client_identity = rtc::SSLIdentity::Create("client", client_key_type_); | 
 |     client_ssl_->SetIdentity(std::move(client_identity)); | 
 |   } | 
 |  | 
 |   void ConfigureServer(absl::string_view experiment) { | 
 |     webrtc::test::ScopedFieldTrials trial{std::string(experiment)}; | 
 |     server_stream_ = | 
 |         new SSLDummyStreamDTLS(this, "s2c", &server_buffer_, &client_buffer_); | 
 |     server_ssl_ = | 
 |         rtc::SSLStreamAdapter::Create(absl::WrapUnique(server_stream_)); | 
 |     server_ssl_->SignalEvent.connect( | 
 |         static_cast<SSLStreamAdapterTestBase*>(this), | 
 |         &SSLStreamAdapterTestBase::OnEvent); | 
 |     server_ssl_->SetIdentity( | 
 |         rtc::SSLIdentity::Create("server", server_key_type_)); | 
 |   } | 
 | }; | 
 |  | 
 | // Test getting the used DTLS ciphers. | 
 | // DTLS 1.2 enabled for neither client nor server -> DTLS 1.0 will be used. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, TestGetSslCipherSuite) { | 
 |   ConfigureClient("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 | } | 
 |  | 
 | // Test getting the used DTLS 1.2 ciphers. | 
 | // DTLS 1.2 enabled for client and server -> DTLS 1.2 will be used. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslCipherSuiteDtls12Both) { | 
 |   ConfigureClient(""); | 
 |   ConfigureServer(""); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_12, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_12, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 | } | 
 |  | 
 | // DTLS 1.2 enabled for client only -> DTLS 1.0 will be used. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslCipherSuiteDtls12Client) { | 
 |   ConfigureClient("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 | } | 
 |  | 
 | // DTLS 1.2 enabled for server only -> DTLS 1.0 will be used. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslCipherSuiteDtls12Server) { | 
 |   ConfigureClient("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_12, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(); | 
 |  | 
 |   int client_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(true, &client_cipher)); | 
 |   int server_cipher; | 
 |   ASSERT_TRUE(GetSslCipherSuite(false, &server_cipher)); | 
 |  | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(true)); | 
 |   ASSERT_EQ(rtc::SSL_PROTOCOL_DTLS_10, GetSslVersion(false)); | 
 |  | 
 |   ASSERT_EQ(client_cipher, server_cipher); | 
 | } | 
 |  | 
 | // Client has legacy TLS versions disabled, server has DTLS 1.0 only. | 
 | // This is meant to cause a failure. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyDisabledServer10) { | 
 |   ConfigureClient(""); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   // Handshake should fail. | 
 |   TestHandshake(false); | 
 | } | 
 |  | 
 | // Both client and server have legacy TLS versions disabled and support | 
 | // DTLS 1.2. This should work. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyDisabledServer12) { | 
 |   ConfigureClient(""); | 
 |   ConfigureServer(""); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_12, rtc::SSL_PROTOCOL_DTLS_12); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Both client and server have legacy TLS versions enabled and support DTLS 1.0. | 
 | // This should work. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyEnabledClient10Server10) { | 
 |   ConfigureClient("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Legacy protocols are disabled in the client, max TLS version is 1.0 | 
 | // This should be a configuration error, and handshake should fail. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyDisabledClient10Server10) { | 
 |   ConfigureClient(""); | 
 |   ConfigureServer("WebRTC-LegacyTlsProtocols/Enabled/"); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(false); | 
 | } | 
 |  | 
 | // Both client and server have legacy TLS versions enabled and support DTLS 1.0. | 
 | // This should work. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyOverrideEnabledClient10Server10) { | 
 |   rtc::SetAllowLegacyTLSProtocols(true); | 
 |   ConfigureClient(""); | 
 |   ConfigureServer(""); | 
 |   // Remove override. | 
 |   rtc::SetAllowLegacyTLSProtocols(absl::nullopt); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(); | 
 | } | 
 |  | 
 | // Client has legacy TLS disabled and server has legacy TLS enabled via | 
 | // override. Handshake for DTLS 1.0 should fail. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyOverrideDisabledClient10EnabledServer10) { | 
 |   rtc::SetAllowLegacyTLSProtocols(false); | 
 |   ConfigureClient(""); | 
 |   rtc::SetAllowLegacyTLSProtocols(true); | 
 |   ConfigureServer(""); | 
 |   // Remove override. | 
 |   rtc::SetAllowLegacyTLSProtocols(absl::nullopt); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(false); | 
 | } | 
 |  | 
 | // Client has legacy TLS enabled and server has legacy TLS disabled via | 
 | // override. Handshake for DTLS 1.0 should fail. | 
 | TEST_F(SSLStreamAdapterTestDTLSLegacyProtocols, | 
 |        TestGetSslVersionLegacyOverrideEnabledClient10DisabledServer10) { | 
 |   rtc::SetAllowLegacyTLSProtocols(true); | 
 |   ConfigureClient(""); | 
 |   rtc::SetAllowLegacyTLSProtocols(false); | 
 |   ConfigureServer(""); | 
 |   // Remove override. | 
 |   rtc::SetAllowLegacyTLSProtocols(absl::nullopt); | 
 |   SetupProtocolVersions(rtc::SSL_PROTOCOL_DTLS_10, rtc::SSL_PROTOCOL_DTLS_10); | 
 |   TestHandshake(false); | 
 | } |