Initial import of IC.Rebuild
This commit is contained in:
@@ -0,0 +1,455 @@
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using System.Buffers.Binary;
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namespace ICRebuild.Core;
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public static class ActiveSendScope
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{
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[ThreadStatic] private static int depth;
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public static bool Active => depth > 0;
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public static IDisposable Enter()
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{
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depth++;
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return new Scope();
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}
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private sealed class Scope : IDisposable
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{
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private int disposed;
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public void Dispose()
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{
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if (Interlocked.Exchange(ref disposed, 1) == 0 && depth > 0) depth--;
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}
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}
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}
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public enum SendTransactionState
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{
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Queued,
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SentNative,
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RejectedNative,
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Confirmed,
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TimedOut,
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Canceled
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}
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public sealed record SendSession(bool Ready, uint Territory, nint LocalAddress, uint LocalEntityId)
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{
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public static readonly SendSession Empty = new(false, 0, 0, 0);
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public bool IsValid => Ready && Territory != 0 && LocalAddress != 0 && LocalEntityId is not (0 or 0xE0000000);
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public bool Matches(SendSession other) =>
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IsValid && other.IsValid && Territory == other.Territory &&
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LocalAddress == other.LocalAddress && LocalEntityId == other.LocalEntityId;
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}
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public sealed record EncodedGamePacket(
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string Name,
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int Opcode,
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byte[] Payload,
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byte[] NativeBuffer,
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int? ExpectedResponseOpcode = null,
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Func<ReadOnlySpan<byte>, bool>? ResponseMatcher = null);
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public sealed record SendTransactionSnapshot(
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long Id,
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string PacketName,
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int Opcode,
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SendTransactionState State,
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long CreatedMs,
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long? SentMs,
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long? CompletedMs,
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byte? NativeResult,
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long? ResponseObservationId,
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long? RoundTripMs,
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string Detail);
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public static class NativeSendPacket
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{
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public const string AuditedClientVersion = PacketParser.AuditedClientVersion;
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public const string BaselineClientVersion = PacketParser.BaselineClientVersion;
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public static bool IsAuditedVersion(string? version) => PacketParser.IsAuditedVersion(version);
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public const int NativePrefixSize = 0x20;
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public const int IpcHeaderSize = NativePacketCapture.IpcHeaderSize;
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// Native ZoneUp (0x1D718C0) reads: +0x00 uint Opcode, +0x08 ulong (payloadLength + 0x10), +0x20 byte[] Payload.
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public static byte[] BuildBuffer(int opcode, ReadOnlySpan<byte> payload)
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{
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if (opcode is <= 0 or > ushort.MaxValue) throw new ArgumentOutOfRangeException(nameof(opcode), "Opcode 超出有效范围");
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if (payload.Length > NativePacketCapture.MaxPayload) throw new ArgumentOutOfRangeException(nameof(payload), "载荷超出 64 KiB 上限");
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var buffer = new byte[NativePrefixSize + payload.Length];
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BinaryPrimitives.WriteUInt32LittleEndian(buffer.AsSpan(0, 4), (uint)opcode);
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BinaryPrimitives.WriteUInt64LittleEndian(buffer.AsSpan(8, 8), (ulong)(payload.Length + IpcHeaderSize));
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payload.CopyTo(buffer.AsSpan(NativePrefixSize));
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return buffer;
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}
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}
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public static class AuditedPacketEncoder
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{
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public static EncodedGamePacket EncodeEventStart(OpcodeMap map, string version, ulong targetObjectId, uint eventId, uint param = 0)
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{
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RequireAuditedVersion(version);
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if (targetObjectId == 0 || targetObjectId == 0xE0000000) throw new ArgumentException("目标对象 ID 无效", nameof(targetObjectId));
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if (eventId == 0) throw new ArgumentException("事件 ID 不能为 0", nameof(eventId));
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var opcode = RequireOpcode(map, version, PacketDirection.Up, "UP_EventStart");
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var responseOpcode = map.ResolveOpcode(version, PacketDirection.Down, "DOWN_EventStart");
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var payload = new byte[0x10];
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BinaryPrimitives.WriteUInt64LittleEndian(payload.AsSpan(0, 8), targetObjectId);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(8, 4), eventId);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(12, 4), param);
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return new("UP_EventStart", opcode, payload, NativeSendPacket.BuildBuffer(opcode, payload), responseOpcode,
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responseOpcode.HasValue ? p => p.Length >= 12 && BinaryPrimitives.ReadUInt32LittleEndian(p.Slice(8, 4)) == eventId : null);
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}
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public static EncodedGamePacket EncodeEventFinish(OpcodeMap map, string version, uint eventId, ushort sceneId, byte state, ReadOnlySpan<uint> args)
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{
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RequireAuditedVersion(version);
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if (eventId == 0) throw new ArgumentException("事件 ID 不能为 0", nameof(eventId));
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var (name, capacity, length) = SelectEventTier("UP_EventFinish", args.Length);
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var opcode = RequireOpcode(map, version, PacketDirection.Up, name);
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var responseOpcode = map.ResolveOpcode(version, PacketDirection.Down, "DOWN_EventFinish");
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var payload = WriteEventPayload(eventId, sceneId, state, args, capacity, length);
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return new(name, opcode, payload, NativeSendPacket.BuildBuffer(opcode, payload), responseOpcode,
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responseOpcode.HasValue ? p => p.Length >= 4 && BinaryPrimitives.ReadUInt32LittleEndian(p[..4]) == eventId : null);
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}
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public static EncodedGamePacket EncodeEventAction(OpcodeMap map, string version, uint eventId, ushort sceneId, byte state, ReadOnlySpan<uint> args)
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{
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RequireAuditedVersion(version);
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if (eventId == 0) throw new ArgumentException("事件 ID 不能为 0", nameof(eventId));
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var (name, capacity, length) = SelectEventTier("UP_EventAction", args.Length);
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var opcode = RequireOpcode(map, version, PacketDirection.Up, name);
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var payload = WriteEventPayload(eventId, sceneId, state, args, capacity, length);
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return new(name, opcode, payload, NativeSendPacket.BuildBuffer(opcode, payload));
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}
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public static EncodedGamePacket EncodeClientTrigger(OpcodeMap map, string version, uint commandId,
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uint arg0 = 0, uint arg1 = 0, uint arg2 = 0, uint arg3 = 0, ulong targetId = 0)
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{
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RequireAuditedVersion(version);
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if (commandId == 0) throw new ArgumentException("触发指令 ID 不能为 0", nameof(commandId));
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var opcode = RequireOpcode(map, version, PacketDirection.Up, "UP_ClientTrigger");
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var payload = new byte[0x20];
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(0, 4), commandId);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(4, 4), arg0);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(8, 4), arg1);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(12, 4), arg2);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(16, 4), arg3);
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BinaryPrimitives.WriteUInt64LittleEndian(payload.AsSpan(24, 8), targetId);
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return new("UP_ClientTrigger", opcode, payload, NativeSendPacket.BuildBuffer(opcode, payload));
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}
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public static EncodedGamePacket EncodeActionSend(OpcodeMap map, string version, uint actionId, byte actionKind,
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ushort requestId, ulong targetId, ushort facing = 0, ushort targetFacing = 0, uint arg = 0)
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{
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RequireAuditedVersion(version);
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if (actionId == 0) throw new ArgumentException("技能 ID 不能为 0", nameof(actionId));
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if (requestId == 0) throw new ArgumentException("请求序号 RequestId 必须大于 0", nameof(requestId));
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if (targetId == 0 || targetId == 0xE0000000) throw new ArgumentException("目标对象 ID 无效", nameof(targetId));
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var opcode = RequireOpcode(map, version, PacketDirection.Up, "UP_ActionSend");
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var responseOpcode = map.ResolveOpcode(version, PacketDirection.Down, "DOWN_Effect");
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var payload = new byte[0x20];
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(0, 4), actionId);
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payload[5] = actionKind;
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BinaryPrimitives.WriteUInt16LittleEndian(payload.AsSpan(6, 2), requestId);
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BinaryPrimitives.WriteUInt16LittleEndian(payload.AsSpan(8, 2), facing);
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BinaryPrimitives.WriteUInt16LittleEndian(payload.AsSpan(10, 2), targetFacing);
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BinaryPrimitives.WriteUInt64LittleEndian(payload.AsSpan(16, 8), targetId);
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(24, 4), arg);
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return new("UP_ActionSend", opcode, payload, NativeSendPacket.BuildBuffer(opcode, payload), responseOpcode,
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responseOpcode.HasValue
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? p => p.Length == 0x7C && p[0x21] <= 1 && BinaryPrimitives.ReadUInt16LittleEndian(p.Slice(0x18, 2)) == requestId
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: null);
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}
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private static (string Name, int Capacity, int Length) SelectEventTier(string prefix, int argCount) => argCount switch
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{
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< 0 or > 255 => throw new ArgumentOutOfRangeException(nameof(argCount), "事件参数数量超出 0..255 范围"),
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<= 2 => (prefix, 2, 0x10),
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<= 4 => ($"{prefix}4", 4, 0x18),
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<= 8 => ($"{prefix}8", 8, 0x28),
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<= 16 => ($"{prefix}16", 16, 0x48),
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<= 32 => ($"{prefix}32", 32, 0x88),
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<= 64 => ($"{prefix}64", 64, 0x108),
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<= 128 => ($"{prefix}128", 128, 0x208),
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_ => ($"{prefix}255", 255, 0x408)
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};
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private static byte[] WriteEventPayload(uint eventId, ushort sceneId, byte state, ReadOnlySpan<uint> args, int capacity, int length)
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{
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if (args.Length > capacity) throw new ArgumentOutOfRangeException(nameof(args));
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var payload = new byte[length];
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(0, 4), eventId);
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BinaryPrimitives.WriteUInt16LittleEndian(payload.AsSpan(4, 2), sceneId);
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payload[6] = state;
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payload[7] = (byte)args.Length;
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for (var i = 0; i < args.Length; i++)
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BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(8 + i * 4, 4), args[i]);
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return payload;
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}
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private static void RequireAuditedVersion(string version)
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{
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if (!NativeSendPacket.IsAuditedVersion(version))
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throw new InvalidOperationException($"主动发包编码器仅适配已核对版本 {NativeSendPacket.AuditedClientVersion}，当前为 {version}");
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}
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private static int RequireOpcode(OpcodeMap map, string version, PacketDirection direction, string name) =>
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map.ResolveOpcode(version, direction, name)
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?? throw new InvalidOperationException($"未找到 {version} 的 {name} Opcode 映射，禁止发送未映射消息");
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}
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public sealed class ActivePacketDispatcher(
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string clientVersion,
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Func<long>? clockMs = null,
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int maxQueue = 32,
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long minIntervalMs = 100,
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long queueTimeoutMs = 2000,
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long responseTimeoutMs = 5000)
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{
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private sealed class Transaction(long id, EncodedGamePacket packet, SendSession session, long createdMs)
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{
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public readonly long Id = id;
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public readonly EncodedGamePacket Packet = packet;
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public readonly SendSession Session = session;
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public readonly long CreatedMs = createdMs;
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public SendTransactionState State = SendTransactionState.Queued;
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public long? SentMs;
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public long? CompletedMs;
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public byte? NativeResult;
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public long? ResponseObservationId;
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public long? RoundTripMs;
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public string Detail = "排队等待主线程调度";
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public SendTransactionSnapshot Snapshot() => new(
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Id, Packet.Name, Packet.Opcode, State, CreatedMs, SentMs, CompletedMs,
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NativeResult, ResponseObservationId, RoundTripMs, Detail);
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}
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[ThreadStatic] private static bool inReceiveCallback;
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private readonly object sync = new();
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private readonly Func<long> nowMs = clockMs ?? (() => Environment.TickCount64);
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private readonly List<Transaction> history = [];
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private SendSession lastSession = SendSession.Empty;
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private long nextId;
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private long lastSendMs = long.MinValue / 2;
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public int PendingQueueCount { get { lock (sync) return history.Count(t => t.State == SendTransactionState.Queued); } }
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public int InFlightCount { get { lock (sync) return history.Count(t => t.State == SendTransactionState.SentNative && !t.CompletedMs.HasValue); } }
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public IDisposable Attach(NetworkPipeline pipeline) =>
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pipeline.Subscribe(NetworkPhase.Received, OnReceived);
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public SendTransactionSnapshot Enqueue(EncodedGamePacket packet, SendSession session)
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{
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ArgumentNullException.ThrowIfNull(packet);
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if (!NativeSendPacket.IsAuditedVersion(clientVersion))
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throw new InvalidOperationException($"主动发送仅适配已核对版本 {NativeSendPacket.AuditedClientVersion}");
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if (!session.IsValid)
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throw new InvalidOperationException("当前角色或区域会话未就绪，禁止入队发送");
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if (packet.Payload == null || packet.NativeBuffer == null ||
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packet.NativeBuffer.Length != NativeSendPacket.NativePrefixSize + packet.Payload.Length)
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throw new InvalidDataException("发送包原生缓冲区长度与载荷不匹配");
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if (!PacketParser.Parse(packet.Name, packet.Payload, clientVersion).Parsed)
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throw new InvalidDataException($"{packet.Name} 载荷未通过本机协议边界校验");
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lock (sync)
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{
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var queuedCount = history.Count(t => t.State == SendTransactionState.Queued);
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if (queuedCount >= maxQueue)
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throw new InvalidOperationException($"发送队列已满（上限 {maxQueue} 条）");
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if (lastSession.IsValid && !lastSession.Matches(session))
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CancelSessionLocked("切区或角色会话变更，已取消旧会话请求");
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lastSession = session;
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var tx = new Transaction(++nextId, packet, session, nowMs());
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history.Add(tx);
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TrimHistoryLocked();
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return tx.Snapshot();
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}
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}
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// Canceling a queued item prevents native dispatch; it never claims to undo an already-sent packet.
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public bool Cancel(long transactionId, string reason = "已取消排队请求")
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{
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lock (sync)
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{
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var tx = history.FirstOrDefault(t => t.Id == transactionId);
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if (tx == null || tx.State != SendTransactionState.Queued) return false;
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tx.State = SendTransactionState.Canceled;
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tx.CompletedMs = nowMs();
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tx.Detail = reason;
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return true;
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}
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}
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public int CancelAllQueued(string reason = "已清空待发送队列")
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{
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lock (sync)
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{
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var count = 0;
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var now = nowMs();
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foreach (var tx in history.Where(t => t.State == SendTransactionState.Queued))
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{
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tx.State = SendTransactionState.Canceled;
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tx.CompletedMs = now;
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tx.Detail = reason;
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count++;
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}
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return count;
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}
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}
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// Must be called from Framework.Update on the main thread, never from a network receive callback.
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public SendTransactionSnapshot? Pump(SendSession currentSession, Func<ReadOnlySpan<byte>, byte> nativeSender)
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{
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ArgumentNullException.ThrowIfNull(nativeSender);
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if (inReceiveCallback || NetworkPipeline.InCallback)
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throw new InvalidOperationException("禁止在网络接收回调中直接触发主动发送");
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Transaction? toSend = null;
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var now = nowMs();
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lock (sync)
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{
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if (!currentSession.IsValid || (lastSession.IsValid && !lastSession.Matches(currentSession)))
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{
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CancelSessionLocked("切区或会话不可用，已取消未完成请求");
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lastSession = currentSession.IsValid ? currentSession : SendSession.Empty;
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if (!currentSession.IsValid) return null;
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}
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else
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{
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lastSession = currentSession;
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}
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foreach (var tx in history)
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{
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if (tx.State == SendTransactionState.Queued && !tx.Session.Matches(currentSession))
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{
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tx.State = SendTransactionState.Canceled;
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tx.CompletedMs = now;
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tx.Detail = "会话已变更，过期请求未发送";
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}
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else if (tx.State == SendTransactionState.Queued && now - tx.CreatedMs > queueTimeoutMs)
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{
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tx.State = SendTransactionState.TimedOut;
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tx.CompletedMs = now;
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tx.Detail = $"排队超过 {queueTimeoutMs} ms 未发送，已过期丢弃";
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}
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else if (tx.State == SendTransactionState.SentNative && tx.Packet.ExpectedResponseOpcode.HasValue &&
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tx.SentMs.HasValue && now - tx.SentMs.Value > responseTimeoutMs)
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{
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tx.State = SendTransactionState.TimedOut;
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tx.CompletedMs = now;
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tx.Detail = $"已发送（原生返回 {tx.NativeResult}），但等待响应 0x{tx.Packet.ExpectedResponseOpcode.Value:X4} 超过 {responseTimeoutMs} ms";
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}
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}
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if (now - lastSendMs < minIntervalMs) return null;
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toSend = history.FirstOrDefault(t => t.State == SendTransactionState.Queued);
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if (toSend == null) return null;
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lastSendMs = now;
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}
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// Invoke native sender outside lock and outside observer catch blocks: never retry a native send.
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byte nativeResult;
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using (ActiveSendScope.Enter())
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{
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nativeResult = nativeSender(toSend.Packet.NativeBuffer);
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}
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var sentAt = nowMs();
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lock (sync)
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{
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toSend.SentMs = sentAt;
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toSend.NativeResult = nativeResult;
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if (nativeResult == 0)
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{
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toSend.State = SendTransactionState.RejectedNative;
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toSend.CompletedMs = sentAt;
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toSend.Detail = "原生发送返回 0（连接未就绪或被底层拒绝）";
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}
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else if (toSend.Packet.ExpectedResponseOpcode.HasValue)
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{
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toSend.State = SendTransactionState.SentNative;
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toSend.Detail = $"已调原生发送（返回 {nativeResult}），等待响应 0x{toSend.Packet.ExpectedResponseOpcode.Value:X4}";
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}
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else
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{
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toSend.State = SendTransactionState.SentNative;
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toSend.CompletedMs = sentAt;
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toSend.Detail = $"已调原生发送（返回 {nativeResult}，无回包契约，不代表服务端已执行）";
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}
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return toSend.Snapshot();
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}
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}
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public SendTransactionSnapshot[] Snapshot()
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{
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lock (sync) return history.Select(t => t.Snapshot()).ToArray();
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}
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private void OnReceived(NetworkObservation observation)
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{
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var msg = observation.Message;
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if (!msg.Complete || msg.Direction != PacketDirection.Down) return;
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var prev = inReceiveCallback;
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inReceiveCallback = true;
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try
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{
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var now = nowMs();
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lock (sync)
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{
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foreach (var tx in history)
|
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{
|
||||
if (tx.State != SendTransactionState.SentNative || !tx.Packet.ExpectedResponseOpcode.HasValue) continue;
|
||||
if (tx.Packet.ExpectedResponseOpcode.Value != msg.Opcode) continue;
|
||||
if (tx.SentMs.HasValue && now - tx.SentMs.Value > responseTimeoutMs)
|
||||
{
|
||||
tx.State = SendTransactionState.TimedOut;
|
||||
tx.CompletedMs = now;
|
||||
tx.Detail = $"等待响应超时（>{responseTimeoutMs} ms）";
|
||||
continue;
|
||||
}
|
||||
if (tx.Packet.ResponseMatcher != null && !tx.Packet.ResponseMatcher(msg.Payload)) continue;
|
||||
tx.State = SendTransactionState.Confirmed;
|
||||
tx.CompletedMs = now;
|
||||
tx.ResponseObservationId = msg.Id;
|
||||
tx.RoundTripMs = tx.SentMs.HasValue ? Math.Max(0, now - tx.SentMs.Value) : 0;
|
||||
tx.Detail = $"收到响应确认（观察 #{msg.Id}，耗时 {tx.RoundTripMs} ms）";
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
finally
|
||||
{
|
||||
inReceiveCallback = prev;
|
||||
}
|
||||
}
|
||||
|
||||
private void CancelSessionLocked(string reason)
|
||||
{
|
||||
var now = nowMs();
|
||||
foreach (var tx in history)
|
||||
{
|
||||
if (tx.State == SendTransactionState.Queued)
|
||||
{
|
||||
tx.State = SendTransactionState.Canceled;
|
||||
tx.CompletedMs = now;
|
||||
tx.Detail = reason;
|
||||
}
|
||||
else if (tx.State == SendTransactionState.SentNative && !tx.CompletedMs.HasValue)
|
||||
{
|
||||
tx.State = SendTransactionState.Canceled;
|
||||
tx.CompletedMs = now;
|
||||
tx.Detail = "切区或会话变更，停止等待旧会话响应";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void TrimHistoryLocked()
|
||||
{
|
||||
while (history.Count > 128)
|
||||
{
|
||||
var index = history.FindIndex(t => t.State != SendTransactionState.Queued);
|
||||
if (index < 0) break;
|
||||
history.RemoveAt(index);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user