public AmpMessage Decode(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
AmpMessage msg = new AmpMessage();
if (reader.ReadableBytes < 10)
{
throw new Rpc.Exceptions.RpcCodecException("消息不正确,小于头长度");
}
msg.Version = reader.ReadByte();
int length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
byte type = reader.ReadByte();
msg.InvokeMessageType = InvokeMessageTypeParser.Parse(type);
msg.ServiceId = reader.ReadUShort();
msg.MessageId = reader.ReadUShort();
int left = length - 14;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new Rpc.Exceptions.RpcCodecException("消息长度不正确");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
public AmpMessage Decode(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
AmpMessage msg = new AmpMessage();
if (reader.ReadableBytes < AmpMessage.HEAD_LENGTH)
{
throw new Rpc.Exceptions.RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes},HEAD_LENGTH={AmpMessage.HEAD_LENGTH}");
}
msg.Version = reader.ReadByte();
int length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
byte type = reader.ReadByte();
msg.InvokeMessageType = Rpc.Utils.ParseUtils.ParseMessageType(type);
msg.ServiceId = reader.ReadUShort();
msg.MessageId = reader.ReadUShort();
msg.Code = reader.ReadInt();
int left = length - AmpMessage.HEAD_LENGTH;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new Rpc.Exceptions.RpcCodecException("消息长度不正确");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
private void ReadHeader(IBufferReader readerBuffer)
{
switch (_headerSize)
{
case 1:
_packageLength = readerBuffer.ReadByte();
break;
case 2:
_packageLength = readerBuffer.ReadInt16();
break;
case 4:
_packageLength = readerBuffer.ReadInt32();
break;
default:
ThrowHelper.ThrowLengthFieldConfigErrorException();
break;
}
}
public AvenueMessage Decode(IBufferReader input)
{
var message = new AvenueMessage();
//开始读取头
message.Flag = input.ReadByte();
if (message.Flag != AvenueConstans.TYPE_REQUEST && message.Flag != AvenueConstans.TYPE_RESPONSE)
{
throw new RpcCodecException("package_type_error");
}
var headlen = input.ReadByte();
message.Version = input.ReadByte();
if (message.Version != AvenueConstans.VERSION_1)
{
throw new RpcCodecException("package_version_error");
}
input.ReadByte();
//包长
int packetLen = input.ReadInt();
int serviceId = input.ReadInt();
if (serviceId < 0)
{
throw new RpcCodecException("package_serviceid_error");
}
int msgId = input.ReadInt();
if (msgId != 0)
{
if (serviceId == 0)
{
throw new RpcCodecException("package_msgid_error");
}
}
message.ServiceId = serviceId;
message.MsgId = msgId;
message.Sequence = input.ReadInt();
//下4位为 optional
//context
input.ReadByte();
byte mustReach = input.ReadByte();
byte format = input.ReadByte();
byte encoding = input.ReadByte();
if (mustReach != AvenueConstans.MUSTREACH_NO && mustReach != AvenueConstans.MUSTREACH_YES)
{
throw new RpcCodecException("package_mustreach_error");
}
if (format != AvenueConstans.FORMAT_TLV)
{
throw new RpcCodecException("package_format_error");
}
if (encoding != AvenueConstans.ENCODING_GBK && encoding != AvenueConstans.ENCODING_UTF8)
{
throw new RpcCodecException("package_encoding_error");
}
message.MustReach = mustReach;
message.Format = format;
message.Encoding = encoding;
// 优先级实际没有用
input.ReadInt();
//signature
input.ReadBytes(new byte[16]);
if (headlen > AvenueConstans.STANDARD_HEADLEN)
{
message.XHead = new byte[headlen - AvenueConstans.STANDARD_HEADLEN];
input.ReadBytes(message.XHead);
}
//开始读取Body
message.Body = new byte[packetLen - headlen];
input.ReadBytes(message.Body);
return(message);
}
public AmpMessage Parse(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
var msg = new AmpMessage {
Version = reader.ReadByte()
};
int headLength;
if (msg.Version == 0)
{
headLength = AmpMessage.VERSION_0_HEAD_LENGTH;
if (reader.ReadableBytes < AmpMessage.VERSION_0_HEAD_LENGTH - 1)
{
throw new RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes+1},HEAD_LENGTH={AmpMessage.VERSION_0_HEAD_LENGTH}");
}
}
else if (msg.Version == 1)
{
headLength = AmpMessage.VERSION_1_HEAD_LENGTH;
if (reader.ReadableBytes < AmpMessage.VERSION_1_HEAD_LENGTH - 1)
{
throw new RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes+1},HEAD_LENGTH={AmpMessage.VERSION_1_HEAD_LENGTH}");
}
}
else
{
throw new RpcCodecException($"decode error ,{msg.Version} is not support");
}
var length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
var type = reader.ReadByte();
msg.InvokeMessageType = (InvokeMessageType)Enum.ToObject(typeof(InvokeMessageType), type);
msg.ServiceId = msg.Version == 0 ? reader.ReadUShort() : reader.ReadInt();
msg.MessageId = reader.ReadUShort();
msg.Code = reader.ReadInt();
if (msg.Version == 1)
{
byte codeType = reader.ReadByte();
if (codeType != this._serializer.CodecType)
{
throw new RpcCodecException($"CodecType:{codeType} is not Match {this._serializer.CodecType}");
}
msg.CodecType = (CodecType)Enum.ToObject(typeof(CodecType), codeType);
}
else
{
msg.CodecType = CodecType.Protobuf;
}
int left = length - headLength;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new RpcCodecException("message not long enough!");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
public static ViofoGpsPoint Parse(IBufferReader reader, uint expectedSize)
{
long start = reader.Position;
uint size = reader.ReadUintBE();
string type = reader.ReadString(4);
string magic = reader.ReadString(4);
if (expectedSize != size || type != "free" || magic != "GPS ")
{
return(null);
}
ViofoGpsPoint gps = new ViofoGpsPoint();
//# checking for weird Azdome 0xAA XOR "encrypted" GPS data.
//This portion is a quick fix.
int payload_size = 254;
byte c = reader.ReadByte();
if (c == 0x05)
{
if (size < 254)
{
payload_size = (int)+size;
}
reader.Position += 5; //???
byte[] payload = reader.ReadBuffer(payload_size);
}
else if ((char)c == 'L')
{
const uint OFFSET_V2 = 48, OFFSET_V1 = 16;
reader.Position = start + OFFSET_V2;
//# Datetime data
int hour = (int)reader.ReadUintLE();
int minute = (int)reader.ReadUintLE();
int second = (int)reader.ReadUintLE();
int year = (int)reader.ReadUintLE();
int month = (int)reader.ReadUintLE();
int day = (int)reader.ReadUintLE();
try { gps.Date = new DateTime(2000 + year, month, day, hour, minute, second); }
catch (Exception err) { Debug.WriteLine(err.ToString()); return(null); }
//# Coordinate data
char active = (char)reader.ReadByte();
gps.IsActive = (active == 'A');
gps.Latitude_hemisphere = (char)reader.ReadByte();
gps.Longtitude_hemisphere = (char)reader.ReadByte();
gps.Unknown = reader.ReadByte();
float lat = reader.ReadFloatLE();
gps.Latitude = FixCoordinate(lat, gps.Latitude_hemisphere);
float lon = reader.ReadFloatLE();
gps.Longtitude = FixCoordinate(lon, gps.Longtitude_hemisphere);
gps.Speed = reader.ReadFloatLE();
gps.Bearing = reader.ReadFloatLE();
return(gps);
}
return(null);
}