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8df31c915a
Two new socket options are introduced OPT_SEND_ECN used for setting ECN bits. OPT_RECV_ECN used for reading the ECN bits. If ECN bits are set on received IP packets, ECT(1) and CE is propagated via rtc::ReceivedPacket. Bug: webrtc:15368 Change-Id: I3ac335007e2f7d30564569bbc80ce47fa541bef1 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/332380 Reviewed-by: Jonas Oreland <jonaso@google.com> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41885}
86 lines
3 KiB
C++
86 lines
3 KiB
C++
/*
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* Copyright 2023 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_NETWORK_RECEIVED_PACKET_H_
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#define RTC_BASE_NETWORK_RECEIVED_PACKET_H_
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#include <cstdint>
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#include "absl/types/optional.h"
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#include "api/array_view.h"
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#include "api/units/timestamp.h"
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#include "rtc_base/network/ecn_marking.h"
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#include "rtc_base/socket_address.h"
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#include "rtc_base/system/rtc_export.h"
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namespace rtc {
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// ReceivedPacket repressent a received IP packet.
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// It contains a payload and metadata.
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// ReceivedPacket itself does not put constraints on what payload contains. For
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// example it may contains STUN, SCTP, SRTP, RTP, RTCP.... etc.
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class RTC_EXPORT ReceivedPacket {
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public:
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enum DecryptionInfo {
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kNotDecrypted, // Payload has not yet been decrypted or encryption is not
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// used.
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kDtlsDecrypted, // Payload has been Dtls decrypted
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kSrtpEncrypted // Payload is SRTP encrypted.
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};
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// Caller must keep memory pointed to by payload and address valid for the
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// lifetime of this ReceivedPacket.
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ReceivedPacket(rtc::ArrayView<const uint8_t> payload,
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const SocketAddress& source_address,
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absl::optional<webrtc::Timestamp> arrival_time = absl::nullopt,
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EcnMarking ecn = EcnMarking::kNotEct,
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DecryptionInfo decryption = kNotDecrypted);
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ReceivedPacket CopyAndSet(DecryptionInfo decryption_info) const;
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// Address/port of the packet sender.
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const SocketAddress& source_address() const { return source_address_; }
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rtc::ArrayView<const uint8_t> payload() const { return payload_; }
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// Timestamp when this packet was received. Not available on all socket
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// implementations.
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absl::optional<webrtc::Timestamp> arrival_time() const {
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return arrival_time_;
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}
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// L4S Explicit Congestion Notification.
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EcnMarking ecn() const { return ecn_; }
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const DecryptionInfo& decryption_info() const { return decryption_info_; }
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static ReceivedPacket CreateFromLegacy(
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const char* data,
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size_t size,
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int64_t packet_time_us,
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const rtc::SocketAddress& addr = rtc::SocketAddress()) {
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return CreateFromLegacy(reinterpret_cast<const uint8_t*>(data), size,
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packet_time_us, addr);
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}
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static ReceivedPacket CreateFromLegacy(
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const uint8_t* data,
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size_t size,
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int64_t packet_time_us,
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const rtc::SocketAddress& = rtc::SocketAddress());
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private:
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rtc::ArrayView<const uint8_t> payload_;
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absl::optional<webrtc::Timestamp> arrival_time_;
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const SocketAddress& source_address_;
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EcnMarking ecn_;
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DecryptionInfo decryption_info_;
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};
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} // namespace rtc
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#endif // RTC_BASE_NETWORK_RECEIVED_PACKET_H_
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