| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef QUICHE_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
| #define QUICHE_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <string> |
| |
| #include "quiche/quic/core/quic_tag.h" |
| |
| // Version and Crypto tags are written to the wire with a big-endian |
| // representation of the name of the tag. For example |
| // the client hello tag (CHLO) will be written as the |
| // following 4 bytes: 'C' 'H' 'L' 'O'. Since it is |
| // stored in memory as a little endian uint32_t, we need |
| // to reverse the order of the bytes. |
| // |
| // This macro ensures that the name matches the definition. |
| #define DEFINE_STATIC_QUIC_TAG(name) \ |
| inline constexpr QuicTag k##name = internal::MakeStaticQuicTag(#name) |
| |
| namespace quic { |
| |
| namespace internal { |
| |
| // Construct a QuicTag from a 4 digit string. The input array is five bytes |
| // because of the trailing null byte. |
| constexpr QuicTag MakeStaticQuicTag(const char (&input)[5]) { |
| constexpr auto u8 = [](char c) { return static_cast<uint8_t>(c); }; |
| return static_cast<QuicTag>((u8(input[3]) << 24) | (u8(input[2]) << 16) | |
| (u8(input[1]) << 8) | u8(input[0])); |
| } |
| |
| // A variant for three-character QUIC tags. Pads the end with null bytes. |
| constexpr QuicTag MakeStaticQuicTag(const char (&input)[4]) { |
| const char extended_input[5] = {input[0], input[1], input[2], 0, 0}; |
| return MakeStaticQuicTag(extended_input); |
| } |
| |
| } // namespace internal |
| |
| using ServerConfigID = std::string; |
| |
| // The following tags have been deprecated and should not be reused: |
| // "1CON", "BBQ4", "NCON", "RCID", "SREJ", "TBKP", "TB10", "SCLS", "SMHL", |
| // "QNZR", "B2HI", "H2PR", "FIFO", "LIFO", "RRWS", "QNSP", "B2CL", "CHSP", |
| // "BPTE", "ACKD", "AKD2", "AKD4", "MAD1", "MAD4", "MAD5", "ACD0", "ACKQ", |
| // "TLPR", "CCS\0", "PDP4", "NCHP", "NBPE", "2RTO", "3RTO", "4RTO", "6RTO", |
| // "PDP1", "PDP2", "PDP3", "PDP5", "QLVE", "RVCM", "BBPD", "TPC\0", "AFFE" |
| |
| DEFINE_STATIC_QUIC_TAG(CHLO); // Client hello |
| DEFINE_STATIC_QUIC_TAG(SHLO); // Server hello |
| DEFINE_STATIC_QUIC_TAG(SCFG); // Server config |
| DEFINE_STATIC_QUIC_TAG(REJ); // Reject |
| DEFINE_STATIC_QUIC_TAG(CETV); // Client encrypted tag-value |
| // pairs |
| DEFINE_STATIC_QUIC_TAG(PRST); // Public reset |
| DEFINE_STATIC_QUIC_TAG(SCUP); // Server config update |
| DEFINE_STATIC_QUIC_TAG(ALPN); // Application-layer protocol |
| |
| // Key exchange methods |
| DEFINE_STATIC_QUIC_TAG(P256); // ECDH, Curve P-256 |
| DEFINE_STATIC_QUIC_TAG(C255); // ECDH, Curve25519 |
| |
| // AEAD algorithms |
| DEFINE_STATIC_QUIC_TAG(AESG); // AES128 + GCM-12 |
| DEFINE_STATIC_QUIC_TAG(CC20); // ChaCha20 + Poly1305 RFC7539 |
| |
| // Congestion control feedback types |
| DEFINE_STATIC_QUIC_TAG(QBIC); // TCP cubic |
| |
| // Connection options (COPT) values |
| DEFINE_STATIC_QUIC_TAG(AFCW); // Auto-tune flow control |
| // receive windows. |
| DEFINE_STATIC_QUIC_TAG(IFW5); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 32KB. (2^5 KB). |
| DEFINE_STATIC_QUIC_TAG(IFW6); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 64KB. (2^6 KB). |
| DEFINE_STATIC_QUIC_TAG(IFW7); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 128KB. (2^7 KB). |
| DEFINE_STATIC_QUIC_TAG(IFW8); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 256KB. (2^8 KB). |
| DEFINE_STATIC_QUIC_TAG(IFW9); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 512KB. (2^9 KB). |
| DEFINE_STATIC_QUIC_TAG(IFWa); // Set initial size |
| // of stream flow control |
| // receive window to |
| // 1MB. (2^0xa KB). |
| DEFINE_STATIC_QUIC_TAG(TBBR); // Reduced Buffer Bloat TCP |
| DEFINE_STATIC_QUIC_TAG(1RTT); // STARTUP in BBR for 1 RTT |
| DEFINE_STATIC_QUIC_TAG(2RTT); // STARTUP in BBR for 2 RTTs |
| DEFINE_STATIC_QUIC_TAG(LRTT); // Exit STARTUP in BBR on loss |
| DEFINE_STATIC_QUIC_TAG(BBS1); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBS2); // More aggressive packet |
| // conservation in BBR STARTUP |
| DEFINE_STATIC_QUIC_TAG(BBS3); // Slowstart packet |
| // conservation in BBR STARTUP |
| DEFINE_STATIC_QUIC_TAG(BBS4); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBS5); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBRR); // Rate-based recovery in BBR |
| DEFINE_STATIC_QUIC_TAG(BBR1); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBR2); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBR3); // Fully drain the queue once |
| // per cycle |
| DEFINE_STATIC_QUIC_TAG(BBR4); // 20 RTT ack aggregation |
| DEFINE_STATIC_QUIC_TAG(BBR5); // 40 RTT ack aggregation |
| DEFINE_STATIC_QUIC_TAG(BBR9); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBRA); // Starts a new ack aggregation |
| // epoch if a full round has |
| // passed |
| DEFINE_STATIC_QUIC_TAG(BBRB); // Use send rate in BBR's |
| // MaxAckHeightTracker |
| DEFINE_STATIC_QUIC_TAG(BBRS); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBQ1); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(BBQ2); // BBRv2 with 2.885 STARTUP and |
| // DRAIN CWND gain. |
| DEFINE_STATIC_QUIC_TAG(BBQ3); // BBR with ack aggregation |
| // compensation in STARTUP. |
| DEFINE_STATIC_QUIC_TAG(BBQ5); // Expire ack aggregation upon |
| // bandwidth increase in |
| // STARTUP. |
| DEFINE_STATIC_QUIC_TAG(BBQ6); // Reduce STARTUP gain to 25% |
| // more than BW increase. |
| DEFINE_STATIC_QUIC_TAG(BBQ7); // Reduce bw_lo by |
| // bytes_lost/min_rtt. |
| DEFINE_STATIC_QUIC_TAG(BBQ8); // Reduce bw_lo by |
| // bw_lo * bytes_lost/inflight |
| DEFINE_STATIC_QUIC_TAG(BBQ9); // Reduce bw_lo by |
| // bw_lo * bytes_lost/cwnd |
| DEFINE_STATIC_QUIC_TAG(BBQ0); // Increase bytes_acked in |
| // PROBE_UP when app limited. |
| DEFINE_STATIC_QUIC_TAG(BBHI); // Increase inflight_hi in |
| // PROBE_UP if ever inflight_hi |
| // limited in round |
| DEFINE_STATIC_QUIC_TAG(RENO); // Reno Congestion Control |
| DEFINE_STATIC_QUIC_TAG(BYTE); // TCP cubic or reno in bytes |
| DEFINE_STATIC_QUIC_TAG(IW03); // Force ICWND to 3 |
| DEFINE_STATIC_QUIC_TAG(IW10); // Force ICWND to 10 |
| DEFINE_STATIC_QUIC_TAG(IW20); // Force ICWND to 20 |
| DEFINE_STATIC_QUIC_TAG(IW50); // Force ICWND to 50 |
| DEFINE_STATIC_QUIC_TAG(IW2X); // Force ICWND to 2x its default value. |
| DEFINE_STATIC_QUIC_TAG(B2ON); // Enable BBRv2 |
| DEFINE_STATIC_QUIC_TAG(B2NA); // For BBRv2, do not add ack |
| // height to queueing threshold |
| DEFINE_STATIC_QUIC_TAG(B2NE); // For BBRv2, always exit |
| // STARTUP on loss, even if |
| // bandwidth growth exceeds |
| // threshold. |
| DEFINE_STATIC_QUIC_TAG(B2RP); // For BBRv2, run PROBE_RTT on |
| // the regular schedule |
| DEFINE_STATIC_QUIC_TAG(B2LO); // Ignore inflight_lo in BBR2 |
| DEFINE_STATIC_QUIC_TAG(B2HR); // 15% inflight_hi headroom. |
| DEFINE_STATIC_QUIC_TAG(B2SL); // When exiting STARTUP due to |
| // loss, set inflight_hi to the |
| // max of bdp and max bytes |
| // delivered in round. |
| DEFINE_STATIC_QUIC_TAG(B2H2); // When exiting PROBE_UP due to |
| // loss, set inflight_hi to the |
| // max of inflight@send and max |
| // bytes delivered in round. |
| DEFINE_STATIC_QUIC_TAG(B2RC); // Disable Reno-coexistence for |
| // BBR2. |
| DEFINE_STATIC_QUIC_TAG(BSAO); // Avoid Overestimation in |
| // Bandwidth Sampler with ack |
| // aggregation |
| DEFINE_STATIC_QUIC_TAG(B2DL); // Increase inflight_hi based |
| // on delievered, not inflight. |
| DEFINE_STATIC_QUIC_TAG(B201); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(B202); // Do not exit PROBE_UP if |
| // inflight dips below 1.25*BW. |
| DEFINE_STATIC_QUIC_TAG(B203); // Ignore inflight_hi until |
| // PROBE_UP is exited. |
| DEFINE_STATIC_QUIC_TAG(B204); // Reduce extra acked when |
| // MaxBW incrases. |
| DEFINE_STATIC_QUIC_TAG(B205); // Add extra acked to CWND in |
| // STARTUP. |
| DEFINE_STATIC_QUIC_TAG(B206); // Exit STARTUP after 2 losses. |
| DEFINE_STATIC_QUIC_TAG(B207); // Exit STARTUP on persistent |
| // queue |
| DEFINE_STATIC_QUIC_TAG(BB2U); // Exit PROBE_UP on |
| // min_bytes_in_flight for two |
| // rounds in a row. |
| DEFINE_STATIC_QUIC_TAG(BB2S); // Exit STARTUP on |
| // min_bytes_in_flight for two |
| // rounds in a row. |
| DEFINE_STATIC_QUIC_TAG(NTLP); // No tail loss probe |
| DEFINE_STATIC_QUIC_TAG(1TLP); // 1 tail loss probe |
| DEFINE_STATIC_QUIC_TAG(1RTO); // Send 1 packet upon RTO |
| DEFINE_STATIC_QUIC_TAG(NRTO); // CWND reduction on loss |
| DEFINE_STATIC_QUIC_TAG(TIME); // Time based loss detection |
| DEFINE_STATIC_QUIC_TAG(ATIM); // Adaptive time loss detection |
| DEFINE_STATIC_QUIC_TAG(MIN1); // Min CWND of 1 packet |
| DEFINE_STATIC_QUIC_TAG(MIN4); // Min CWND of 4 packets, |
| // with a min rate of 1 BDP. |
| DEFINE_STATIC_QUIC_TAG(MAD0); // Ignore ack delay |
| DEFINE_STATIC_QUIC_TAG(MAD2); // No min TLP |
| DEFINE_STATIC_QUIC_TAG(MAD3); // No min RTO |
| DEFINE_STATIC_QUIC_TAG(1ACK); // 1 fast ack for reordering |
| DEFINE_STATIC_QUIC_TAG(AKD3); // Ack decimation style acking |
| // with 1/8 RTT acks. |
| DEFINE_STATIC_QUIC_TAG(AKDU); // Unlimited number of packets |
| // received before acking |
| DEFINE_STATIC_QUIC_TAG(AFF1); // Use SRTT in building |
| // AckFrequencyFrame. |
| DEFINE_STATIC_QUIC_TAG(AFF2); // Send AckFrequencyFrame upon |
| // handshake completion. |
| DEFINE_STATIC_QUIC_TAG(SSLR); // Slow Start Large Reduction. |
| DEFINE_STATIC_QUIC_TAG(NPRR); // Pace at unity instead of PRR |
| DEFINE_STATIC_QUIC_TAG(5RTO); // Close connection on 5 RTOs |
| DEFINE_STATIC_QUIC_TAG(CBHD); // Client only blackhole |
| // detection. |
| DEFINE_STATIC_QUIC_TAG(NBHD); // No blackhole detection. |
| DEFINE_STATIC_QUIC_TAG(CONH); // Conservative Handshake |
| // Retransmissions. |
| DEFINE_STATIC_QUIC_TAG(LFAK); // Don't invoke FACK on the |
| // first ack. |
| DEFINE_STATIC_QUIC_TAG(STMP); // DEPRECATED |
| DEFINE_STATIC_QUIC_TAG(EACK); // Bundle ack-eliciting frame |
| // with an ACK after PTO/RTO |
| |
| DEFINE_STATIC_QUIC_TAG(ILD0); // IETF style loss detection |
| // (default with 1/8 RTT time |
| // threshold) |
| DEFINE_STATIC_QUIC_TAG(ILD1); // IETF style loss detection |
| // with 1/4 RTT time threshold |
| DEFINE_STATIC_QUIC_TAG(ILD2); // IETF style loss detection |
| // with adaptive packet |
| // threshold |
| DEFINE_STATIC_QUIC_TAG(ILD3); // IETF style loss detection |
| // with 1/4 RTT time threshold |
| // and adaptive packet |
| // threshold |
| DEFINE_STATIC_QUIC_TAG(ILD4); // IETF style loss detection |
| // with both adaptive time |
| // threshold (default 1/4 RTT) |
| // and adaptive packet |
| // threshold |
| DEFINE_STATIC_QUIC_TAG(RUNT); // No packet threshold loss |
| // detection for "runt" packet. |
| DEFINE_STATIC_QUIC_TAG(NSTP); // No stop waiting frames. |
| DEFINE_STATIC_QUIC_TAG(NRTT); // Ignore initial RTT |
| |
| DEFINE_STATIC_QUIC_TAG(1PTO); // Send 1 packet upon PTO. |
| DEFINE_STATIC_QUIC_TAG(2PTO); // Send 2 packets upon PTO. |
| |
| DEFINE_STATIC_QUIC_TAG(6PTO); // Closes connection on 6 |
| // consecutive PTOs. |
| DEFINE_STATIC_QUIC_TAG(7PTO); // Closes connection on 7 |
| // consecutive PTOs. |
| DEFINE_STATIC_QUIC_TAG(8PTO); // Closes connection on 8 |
| // consecutive PTOs. |
| DEFINE_STATIC_QUIC_TAG(PTOS); // Skip packet number before |
| // sending the last PTO. |
| DEFINE_STATIC_QUIC_TAG(PTOA); // Do not add max ack delay |
| // when computing PTO timeout |
| // if an immediate ACK is |
| // expected. |
| DEFINE_STATIC_QUIC_TAG(PEB1); // Start exponential backoff |
| // since 1st PTO. |
| DEFINE_STATIC_QUIC_TAG(PEB2); // Start exponential backoff |
| // since 2nd PTO. |
| DEFINE_STATIC_QUIC_TAG(PVS1); // Use 2 * rttvar when |
| // calculating PTO timeout. |
| DEFINE_STATIC_QUIC_TAG(PAG1); // Make 1st PTO more aggressive |
| DEFINE_STATIC_QUIC_TAG(PAG2); // Make first 2 PTOs more |
| // aggressive |
| DEFINE_STATIC_QUIC_TAG(PSDA); // Use standard deviation when |
| // calculating PTO timeout. |
| DEFINE_STATIC_QUIC_TAG(PLE1); // Arm the 1st PTO with |
| // earliest in flight sent time |
| // and at least 0.5*srtt from |
| // last sent packet. |
| DEFINE_STATIC_QUIC_TAG(PLE2); // Arm the 1st PTO with |
| // earliest in flight sent time |
| // and at least 1.5*srtt from |
| // last sent packet. |
| DEFINE_STATIC_QUIC_TAG(APTO); // Use 1.5 * initial RTT before |
| // any RTT sample is available. |
| |
| DEFINE_STATIC_QUIC_TAG(ELDT); // Enable Loss Detection Tuning |
| |
| DEFINE_STATIC_QUIC_TAG(SPAD); // Use server preferred address |
| DEFINE_STATIC_QUIC_TAG(SPA2); // Start validating server |
| // preferred address once it is |
| // received. Send all coalesced |
| // packets to both addresses. |
| DEFINE_STATIC_QUIC_TAG(EVMB); |
| |
| DEFINE_STATIC_QUIC_TAG(CRNT); |
| |
| DEFINE_STATIC_QUIC_TAG(PRGC); // Prague Cubic congestion |
| // control (client-only) |
| DEFINE_STATIC_QUIC_TAG(CQBC); // Client-only Cubic congestion control. Used |
| // for a control in the PRGC experiment. |
| |
| // Optional support of truncated Connection IDs. If sent by a peer, the value |
| // is the minimum number of bytes allowed for the connection ID sent to the |
| // peer. |
| DEFINE_STATIC_QUIC_TAG(TCID); // Connection ID truncation. |
| |
| // Multipath option. |
| DEFINE_STATIC_QUIC_TAG(MPTH); // Enable multipath. |
| |
| DEFINE_STATIC_QUIC_TAG(NCMR); // Do not attempt connection |
| // migration. |
| |
| // Allows disabling defer_send_in_response_to_packets in QuicConnection. |
| DEFINE_STATIC_QUIC_TAG(DFER); // Do not defer sending. |
| DEFINE_STATIC_QUIC_TAG(CDFR); // Defer sending on client. |
| |
| // Pacing options. |
| DEFINE_STATIC_QUIC_TAG(NPCO); // No pacing offload. |
| DEFINE_STATIC_QUIC_TAG(RNIB); // Remove non-initial burst. |
| |
| // Enable bandwidth resumption experiment. |
| DEFINE_STATIC_QUIC_TAG(BWRE); // Bandwidth resumption. |
| DEFINE_STATIC_QUIC_TAG(BWMX); // Max bandwidth resumption. |
| DEFINE_STATIC_QUIC_TAG(BWID); // Send bandwidth when idle. |
| DEFINE_STATIC_QUIC_TAG(BWI1); // Resume bandwidth experiment 1 |
| DEFINE_STATIC_QUIC_TAG(BWRS); // Server bandwidth resumption. |
| DEFINE_STATIC_QUIC_TAG(BWS2); // Server bw resumption v2. |
| DEFINE_STATIC_QUIC_TAG(BWS3); // QUIC Initial CWND - Control. |
| DEFINE_STATIC_QUIC_TAG(BWS4); // QUIC Initial CWND - Enabled. |
| DEFINE_STATIC_QUIC_TAG(BWS5); // QUIC Initial CWND up and down |
| DEFINE_STATIC_QUIC_TAG(BWS6); // QUIC Initial CWND - Enabled |
| // with 0.5 * default |
| // multiplier. |
| DEFINE_STATIC_QUIC_TAG(BWP0); // QUIC Initial CWND - SPDY |
| // priority 0. |
| DEFINE_STATIC_QUIC_TAG(BWP1); // QUIC Initial CWND - SPDY |
| // priorities 0 and 1. |
| DEFINE_STATIC_QUIC_TAG(BWP2); // QUIC Initial CWND - SPDY |
| // priorities 0, 1 and 2. |
| DEFINE_STATIC_QUIC_TAG(BWP3); // QUIC Initial CWND - SPDY |
| // priorities 0, 1, 2 and 3. |
| DEFINE_STATIC_QUIC_TAG(BWP4); // QUIC Initial CWND - SPDY |
| // priorities >= 0, 1, 2, 3 and |
| // 4. |
| DEFINE_STATIC_QUIC_TAG(BWG4); // QUIC Initial CWND - |
| // Bandwidth model 1. |
| DEFINE_STATIC_QUIC_TAG(BWG7); // QUIC Initial CWND - |
| // Bandwidth model 2. |
| DEFINE_STATIC_QUIC_TAG(BWG8); // QUIC Initial CWND - |
| // Bandwidth model 3. |
| DEFINE_STATIC_QUIC_TAG(BWS7); // QUIC Initial CWND - Enabled |
| // with 0.75 * default |
| // multiplier. |
| DEFINE_STATIC_QUIC_TAG(BWM3); // Consider overshooting if |
| // bytes lost after bandwidth |
| // resumption * 3 > IW. |
| DEFINE_STATIC_QUIC_TAG(BWM4); // Consider overshooting if |
| // bytes lost after bandwidth |
| // resumption * 4 > IW. |
| DEFINE_STATIC_QUIC_TAG(ICW1); // Max initial congestion window |
| // 100. |
| DEFINE_STATIC_QUIC_TAG(DTOS); // Enable overshooting |
| // detection. |
| |
| DEFINE_STATIC_QUIC_TAG(FIDT); // Extend idle timer by PTO |
| // instead of the whole idle |
| // timeout. |
| |
| DEFINE_STATIC_QUIC_TAG(3AFF); // 3 anti amplification factor. |
| DEFINE_STATIC_QUIC_TAG(10AF); // 10 anti amplification factor. |
| |
| // Enable path MTU discovery experiment. |
| DEFINE_STATIC_QUIC_TAG(MTUH); // High-target MTU discovery. |
| DEFINE_STATIC_QUIC_TAG(MTUL); // Low-target MTU discovery. |
| |
| DEFINE_STATIC_QUIC_TAG(NSLC); // Always send connection close |
| // for idle timeout. |
| |
| // Enable application-driven pacing experiment. |
| DEFINE_STATIC_QUIC_TAG(ADP0); // Enable App-Driven Pacing. |
| |
| // Proof types (i.e. certificate types) |
| // NOTE: although it would be silly to do so, specifying both kX509 and kX59R |
| // is allowed and is equivalent to specifying only kX509. |
| DEFINE_STATIC_QUIC_TAG(X509); // X.509 certificate, all key |
| // types |
| DEFINE_STATIC_QUIC_TAG(X59R); // X.509 certificate, RSA keys |
| // only |
| DEFINE_STATIC_QUIC_TAG(CHID); // Channel ID. |
| |
| // Client hello tags |
| DEFINE_STATIC_QUIC_TAG(VER); // Version |
| DEFINE_STATIC_QUIC_TAG(NONC); // The client's nonce |
| DEFINE_STATIC_QUIC_TAG(NONP); // The client's proof nonce |
| DEFINE_STATIC_QUIC_TAG(KEXS); // Key exchange methods |
| DEFINE_STATIC_QUIC_TAG(AEAD); // Authenticated |
| // encryption algorithms |
| DEFINE_STATIC_QUIC_TAG(COPT); // Connection options |
| DEFINE_STATIC_QUIC_TAG(CLOP); // Client connection options |
| DEFINE_STATIC_QUIC_TAG(ICSL); // Idle network timeout |
| DEFINE_STATIC_QUIC_TAG(MIDS); // Max incoming bidi streams |
| DEFINE_STATIC_QUIC_TAG(MIUS); // Max incoming unidi streams |
| DEFINE_STATIC_QUIC_TAG(ADE); // Ack Delay Exponent (IETF |
| // QUIC ACK Frame Only). |
| DEFINE_STATIC_QUIC_TAG(IRTT); // Estimated initial RTT in us. |
| DEFINE_STATIC_QUIC_TAG(TRTT); // If server receives an rtt |
| // from an address token, set |
| // it as the initial rtt. |
| DEFINE_STATIC_QUIC_TAG(SNI); // Server name |
| // indication |
| DEFINE_STATIC_QUIC_TAG(PUBS); // Public key values |
| DEFINE_STATIC_QUIC_TAG(SCID); // Server config id |
| DEFINE_STATIC_QUIC_TAG(OBIT); // Server orbit. |
| DEFINE_STATIC_QUIC_TAG(PDMD); // Proof demand. |
| DEFINE_STATIC_QUIC_TAG(PROF); // Proof (signature). |
| DEFINE_STATIC_QUIC_TAG(CCRT); // Cached certificate |
| DEFINE_STATIC_QUIC_TAG(EXPY); // Expiry |
| DEFINE_STATIC_QUIC_TAG(STTL); // Server Config TTL |
| DEFINE_STATIC_QUIC_TAG(SFCW); // Initial stream flow control |
| // receive window. |
| DEFINE_STATIC_QUIC_TAG(CFCW); // Initial session/connection |
| // flow control receive window. |
| DEFINE_STATIC_QUIC_TAG(UAID); // Client's User Agent ID. |
| DEFINE_STATIC_QUIC_TAG(XLCT); // Expected leaf certificate. |
| |
| DEFINE_STATIC_QUIC_TAG(QNZ2); // Turn off QUIC crypto 0-RTT. |
| |
| DEFINE_STATIC_QUIC_TAG(MAD); // Max Ack Delay (IETF QUIC) |
| |
| DEFINE_STATIC_QUIC_TAG(IGNP); // Do not use PING only packet |
| // for RTT measure or |
| // congestion control. |
| |
| DEFINE_STATIC_QUIC_TAG(SRWP); // Enable retransmittable on |
| // wire PING (ROWP) on the |
| // server side. |
| DEFINE_STATIC_QUIC_TAG(ROWF); // Send first 1-RTT packet on |
| // ROWP timeout. |
| DEFINE_STATIC_QUIC_TAG(ROWR); // Send random bytes on ROWP |
| // timeout. |
| |
| // Retransmittable on wire timeout experiment. |
| // TODO: b/427246911 - Remove these tags once the experiment is complete. |
| DEFINE_STATIC_QUIC_TAG(ROW1); // Set retransmittable on wire timeout to 1*PTO. |
| DEFINE_STATIC_QUIC_TAG(ROW2); // Set retransmittable on wire timeout to 2*PTO. |
| DEFINE_STATIC_QUIC_TAG(ROW3); // Set retransmittable on wire timeout to 3*PTO. |
| |
| // Selective Resumption variants. |
| DEFINE_STATIC_QUIC_TAG(GSR0); |
| DEFINE_STATIC_QUIC_TAG(GSR1); |
| DEFINE_STATIC_QUIC_TAG(GSR2); |
| DEFINE_STATIC_QUIC_TAG(GSR3); |
| |
| DEFINE_STATIC_QUIC_TAG(NRES); // No resumption |
| |
| DEFINE_STATIC_QUIC_TAG(INVC); // Send connection close for |
| // INVALID_VERSION |
| |
| DEFINE_STATIC_QUIC_TAG(MPQC); // Multi-port QUIC connection |
| DEFINE_STATIC_QUIC_TAG(MPQM); // Enable multi-port QUIC |
| // migration |
| |
| // Client Hints triggers. |
| DEFINE_STATIC_QUIC_TAG(GWCH); |
| DEFINE_STATIC_QUIC_TAG(YTCH); |
| DEFINE_STATIC_QUIC_TAG(ACH0); |
| |
| // Client sends these connection options to express the intention of skipping IP |
| // matching when trying to send a request on active sessions. |
| DEFINE_STATIC_QUIC_TAG(NOIP); |
| DEFINE_STATIC_QUIC_TAG(NIPA); // Aggressively skip IP matching |
| |
| // Rejection tags |
| DEFINE_STATIC_QUIC_TAG(RREJ); // Reasons for server sending |
| |
| // Server hello tags |
| DEFINE_STATIC_QUIC_TAG(CADR); // Client IP address and port |
| DEFINE_STATIC_QUIC_TAG(ASAD); // Alternate Server IP address |
| // and port. |
| DEFINE_STATIC_QUIC_TAG(SRST); // Stateless reset token used |
| // in IETF public reset packet |
| |
| // CETV tags |
| DEFINE_STATIC_QUIC_TAG(CIDK); // ChannelID key |
| DEFINE_STATIC_QUIC_TAG(CIDS); // ChannelID signature |
| |
| // Public reset tags |
| DEFINE_STATIC_QUIC_TAG(RNON); // Public reset nonce proof |
| DEFINE_STATIC_QUIC_TAG(RSEQ); // Rejected packet number |
| |
| // Universal tags |
| DEFINE_STATIC_QUIC_TAG(PAD); // Padding |
| |
| // Client Hello Padding tags, for experiments. |
| DEFINE_STATIC_QUIC_TAG(CHP1); // 1-packet padding to CHLO. |
| DEFINE_STATIC_QUIC_TAG(CHP2); // 2-packet padding to CHLO. |
| |
| // Stats collection tags |
| DEFINE_STATIC_QUIC_TAG(EPID); // Endpoint identifier. |
| |
| DEFINE_STATIC_QUIC_TAG(MCS1); |
| DEFINE_STATIC_QUIC_TAG(MCS2); |
| DEFINE_STATIC_QUIC_TAG(MCS3); |
| DEFINE_STATIC_QUIC_TAG(MCS4); |
| DEFINE_STATIC_QUIC_TAG(MCS5); |
| |
| // Per-loop stream limit experiments |
| DEFINE_STATIC_QUIC_TAG(SLP1); // 1 new request per event loop |
| DEFINE_STATIC_QUIC_TAG(SLP2); // 2 new requests per event loop |
| DEFINE_STATIC_QUIC_TAG(SLPF); // number of new requests per |
| // event loop according to |
| // internal flag. |
| |
| DEFINE_STATIC_QUIC_TAG(BSUS); // Blocks server connection |
| // until the SETTINGS frame |
| // is received. |
| |
| // Enable Failed Path Probe experiment |
| DEFINE_STATIC_QUIC_TAG(FPPE); |
| |
| // Fix timeouts experiment. |
| DEFINE_STATIC_QUIC_TAG(FTOE); |
| |
| // Path degradation experiments. |
| DEFINE_STATIC_QUIC_TAG(PDE2); // 2 PTOs for path degradation. |
| DEFINE_STATIC_QUIC_TAG(PDE3); // 3 PTOs for path degradation. |
| DEFINE_STATIC_QUIC_TAG(PDE5); // 5 PTOs for path degradation. |
| DEFINE_STATIC_QUIC_TAG(MPR1); // Probe for multi-port path on RTO. |
| |
| // Experiment for explicit connection close packet for silent idle timeout from |
| // server. |
| DEFINE_STATIC_QUIC_TAG(ECCP); |
| |
| #undef DEFINE_STATIC_QUIC_TAG |
| |
| // These tags have a special form so that they appear either at the beginning |
| // or the end of a handshake message. Since handshake messages are sorted by |
| // tag value, the tags with 0 at the end will sort first and those with 255 at |
| // the end will sort last. |
| // |
| // The certificate chain should have a tag that will cause it to be sorted at |
| // the end of any handshake messages because it's likely to be large and the |
| // client might be able to get everything that it needs from the small values at |
| // the beginning. |
| // |
| // Likewise tags with random values should be towards the beginning of the |
| // message because the server mightn't hold state for a rejected client hello |
| // and therefore the client may have issues reassembling the rejection message |
| // in the event that it sent two client hellos. |
| inline constexpr QuicTag kServerNonceTag = |
| internal::MakeStaticQuicTag("SNO\0"); // The server's nonce |
| inline constexpr QuicTag kSourceAddressTokenTag = |
| internal::MakeStaticQuicTag("STK\0"); // Source-address token |
| inline constexpr QuicTag kCertificateTag = |
| internal::MakeStaticQuicTag("CRT\xFF"); // Certificate chain |
| inline constexpr QuicTag kCertificateSCTTag = internal::MakeStaticQuicTag( |
| "CSCT"); // Signed cert timestamp (RFC6962) of leaf cert. |
| |
| // Max number of entries in a message. |
| inline constexpr size_t kMaxEntries = 128; |
| |
| // Size in bytes of the connection nonce. |
| inline constexpr size_t kNonceSize = 32; |
| |
| // Number of bytes in an orbit value. |
| inline constexpr size_t kOrbitSize = 8; |
| |
| // kProofSignatureLabel is prepended to the CHLO hash and server configs before |
| // signing to avoid any cross-protocol attacks on the signature. |
| inline constexpr char kProofSignatureLabel[] = |
| "QUIC CHLO and server config signature"; |
| |
| // kClientHelloMinimumSize is the minimum size of a client hello. Client hellos |
| // will have PAD tags added in order to ensure this minimum is met and client |
| // hellos smaller than this will be an error. This minimum size reduces the |
| // amplification factor of any mirror DoS attack. |
| // |
| // A client may pad an inchoate client hello to a size larger than |
| // kClientHelloMinimumSize to make it more likely to receive a complete |
| // rejection message. |
| inline constexpr size_t kClientHelloMinimumSize = 1024; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
