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1 /* | |
2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #ifndef WEBRTC_PC_DTLSSRTPTRANSPORT_H_ | |
12 #define WEBRTC_PC_DTLSSRTPTRANSPORT_H_ | |
13 | |
14 #include <memory> | |
15 #include <string> | |
16 #include <vector> | |
17 | |
18 #include "webrtc/p2p/base/dtlstransportinternal.h" | |
19 #include "webrtc/pc/srtptransport.h" | |
20 | |
21 namespace webrtc { | |
22 | |
23 // This class exports the keying materials from underneath DtlsTransport and | |
pthatcher
2017/09/12 00:24:44
"from underneath DtlsTransport" => "from the DtlsT
Zhi Huang
2017/09/27 00:46:32
Done.
| |
24 // sets the crypto keys for the wrapped SrtpTransport. | |
25 class DtlsSrtpTransport : public RtpTransportInternal { | |
26 public: | |
27 DtlsSrtpTransport(std::unique_ptr<webrtc::SrtpTransport> srtp_transport, | |
28 const std::string& content_name); | |
pthatcher
2017/09/12 00:24:44
Why is the content name needed?
Zhi Huang
2017/09/27 00:46:32
Removed.
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29 | |
30 bool SetupDtlsSrtp(bool rtcp); | |
pthatcher
2017/09/12 00:24:44
Note: this is the kind of place removing support f
Zhi Huang
2017/09/27 00:46:33
Acknowledged.
| |
31 | |
32 // Set a P2P layer DtlsTransport for DtlsSrtpTransport. | |
33 void SetDtlsTransport(bool rtcp, | |
34 cricket::DtlsTransportInternal* dtls_transport); | |
pthatcher
2017/09/12 00:24:44
The getters have two methods. I think the setters
Zhi Huang
2017/09/27 00:46:32
Done.
| |
35 | |
36 // Set the header extension ids that should be encrypted for the given source. | |
37 // This method doesn't immediately update the SRTP session with the new IDs, | |
38 // and you need to call SetupDtlsSrtp for that to happen. | |
39 void SetEncryptedHeaderExtensionIds(cricket::ContentSource source, | |
40 const std::vector<int>& extension_ids); | |
pthatcher
2017/09/12 00:24:44
Instead of passing in a source, I think it would b
Zhi Huang
2017/09/27 00:46:32
Agreed. The BaseChannel should take care of the Co
| |
41 | |
42 cricket::DtlsTransportInternal* rtp_dtls_transport() { | |
43 return rtp_dtls_transport_; | |
44 } | |
45 | |
46 cricket::DtlsTransportInternal* rtcp_dtls_transport() { | |
47 return rtcp_dtls_transport_; | |
48 } | |
49 | |
50 // RtpTransportInternal overrides. | |
51 void SetRtcpMuxEnabled(bool enable) override; | |
52 | |
53 rtc::PacketTransportInternal* rtp_packet_transport() const override; | |
54 | |
55 void SetRtpPacketTransport(rtc::PacketTransportInternal* rtp) override; | |
56 | |
57 PacketTransportInterface* GetRtpPacketTransport() const override; | |
58 | |
59 rtc::PacketTransportInternal* rtcp_packet_transport() const override; | |
60 | |
61 void SetRtcpPacketTransport(rtc::PacketTransportInternal* rtcp) override; | |
62 | |
63 PacketTransportInterface* GetRtcpPacketTransport() const override; | |
64 | |
65 bool IsWritable(bool rtcp) const override; | |
66 | |
67 bool SendRtpPacket(rtc::CopyOnWriteBuffer* packet, | |
68 const rtc::PacketOptions& options, | |
69 int flags) override; | |
70 | |
71 bool SendRtcpPacket(rtc::CopyOnWriteBuffer* packet, | |
72 const rtc::PacketOptions& options, | |
73 int flags) override; | |
74 | |
75 bool HandlesPayloadType(int payload_type) const override; | |
76 | |
77 void AddHandledPayloadType(int payload_type) override; | |
78 | |
79 bool IsActive() { return active_; } | |
80 | |
81 void ResetParams(); | |
82 | |
83 RTCError SetParameters(const RtpTransportParameters& parameters) override; | |
84 | |
85 RtpTransportParameters GetParameters() const override; | |
86 | |
87 // TODO(zhihuang): Remove this when we remove RtpTransportAdapter. | |
88 RtpTransportAdapter* GetInternal() override { return nullptr; } | |
89 | |
90 private: | |
91 void ConnectToSrtpTransport(); | |
92 | |
93 void OnPacketReceived(bool rtcp, | |
94 rtc::CopyOnWriteBuffer* packet, | |
95 const rtc::PacketTime& packet_time); | |
96 | |
97 void OnReadyToSend(bool ready); | |
98 | |
99 bool active_ = false; | |
pthatcher
2017/09/12 00:24:44
Can you leave a comment explaining when it becomes
Zhi Huang
2017/09/27 00:46:32
Done.
| |
100 std::unique_ptr<SrtpTransport> srtp_transport_; | |
101 std::string content_name_; | |
102 // Not owned by this class. | |
pthatcher
2017/09/12 00:24:44
Who has the responsibility of tracking the lifetim
Zhi Huang
2017/09/27 00:46:32
The transport controller should own these.
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103 cricket::DtlsTransportInternal* rtp_dtls_transport_ = nullptr; | |
104 cricket::DtlsTransportInternal* rtcp_dtls_transport_ = nullptr; | |
105 }; | |
106 | |
107 } // namespace webrtc | |
108 | |
109 #endif // WEBRTC_PC_DTLSSRTPTRANSPORT_H_ | |
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