chromium/net/third_party/quiche/src/quiche/quic/tools/quic_packet_printer_bin.cc

// 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.

// clang-format off

// Dumps out the decryptable contents of a QUIC packet in a human-readable way.
// If the packet is null encrypted, this will dump full packet contents.
// Otherwise it will dump the header, and fail with an error that the
// packet is undecryptable.
//
// Usage: quic_packet_printer server|client <hex dump of packet>
//
// Example input:
// quic_packet_printer server 0c6b810308320f24c004a939a38a2e3fd6ca589917f200400201b80b0100501c0700060003023d0000001c00556e656e637279707465642073747265616d2064617461207365656e
//
// Example output:
// OnPacket
// OnUnauthenticatedPublicHeader
// OnUnauthenticatedHeader: { connection_id: 13845207862000976235, connection_id_length:8, packet_number_length:1, multipath_flag: 0, reset_flag: 0, version_flag: 0, path_id: , packet_number: 4 }
// OnDecryptedPacket
// OnPacketHeader
// OnAckFrame:  largest_observed: 1 ack_delay_time: 3000 missing_packets: [  ] is_truncated: 0 received_packets: [ 1 at 466016  ]
// OnStopWaitingFrame
// OnConnectionCloseFrame: error_code { 61 } error_details { Unencrypted stream data seen }

// clang-format on

#include <iostream>
#include <memory>
#include <optional>
#include <string>
#include <vector>

#include "absl/strings/escaping.h"
#include "absl/strings/string_view.h"
#include "quiche/quic/core/quic_framer.h"
#include "quiche/quic/core/quic_types.h"
#include "quiche/quic/core/quic_utils.h"
#include "quiche/quic/platform/api/quic_flags.h"
#include "quiche/common/platform/api/quiche_command_line_flags.h"
#include "quiche/common/quiche_text_utils.h"

DEFINE_QUICHE_COMMAND_LINE_FLAG(…);

namespace quic {

class QuicPacketPrinter : public QuicFramerVisitorInterface { … };

}  // namespace quic

int main(int argc, char* argv[]) { … }