Support encrypted RTP extensions (RFC 6904)

webrtc/p2p/base/dtlstransportchannel.h

 /*
  *  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.
  */
 
@@ skipping 76 matching lines @@
 class DtlsTransport : public DtlsTransportInternal {
  public:
   // |ice_transport| is the ICE transport this DTLS transport is wrapping.
   //
   // |crypto_options| are the options used for the DTLS handshake. This affects
   // whether GCM crypto suites are negotiated.
   explicit DtlsTransport(IceTransportInternal* ice_transport,
                          const rtc::CryptoOptions& crypto_options);
   ~DtlsTransport() override;
 
+  const rtc::CryptoOptions& crypto_options() const override {
+    return crypto_options_;
+  }
+
   DtlsTransportState dtls_state() const override { return dtls_state_; }
 
   const std::string& transport_name() const override { return transport_name_; }
 
   int component() const override { return component_; }
 
   // Returns false if no local certificate was set, or if the peer doesn't
   // support DTLS.
   bool IsDtlsActive() const override { return dtls_active_; }
 
@@ skipping 104 matching lines @@
   // Underlying ice_transport, not owned by this class.
   IceTransportInternal* const ice_transport_;
   std::unique_ptr<rtc::SSLStreamAdapter> dtls_;  // The DTLS stream
   StreamInterfaceChannel*
       downward_;  // Wrapper for ice_transport_, owned by dtls_.
   std::vector<int> srtp_ciphers_;     // SRTP ciphers to use with DTLS.
   bool dtls_active_ = false;
   rtc::scoped_refptr<rtc::RTCCertificate> local_certificate_;
   rtc::SSLRole ssl_role_;
   rtc::SSLProtocolVersion ssl_max_version_;
+  rtc::CryptoOptions crypto_options_;
   rtc::Buffer remote_fingerprint_value_;
   std::string remote_fingerprint_algorithm_;
 
   // Cached DTLS ClientHello packet that was received before we started the
   // DTLS handshake. This could happen if the hello was received before the
   // ice transport became writable, or before a remote fingerprint was received.
   rtc::Buffer cached_client_hello_;
 
   bool receiving_ = false;
   bool writable_ = false;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(DtlsTransport);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_DTLSTRANSPORTCHANNEL_H_