/// <summary>
/// Parse
/// </summary>
/// <param name="connection"></param>
/// <param name="buffer"></param>
/// <param name="readlength"></param>
/// <returns></returns>
/// <exception cref="BadProtocolException"></exception>
public ZookResponse Parse(IConnection connection, ArraySegment <byte> buffer, out int readlength)
{
if (buffer.Count < 4)
{
readlength = 0;
return(null);
}
var payload = buffer.Array;
//获取message length
var messageLength = NetworkBitConverter.ToInt32(payload, buffer.Offset);
readlength = messageLength + 4;
if (buffer.Count < readlength)
{
readlength = 0;
return(null);
}
//首次connect to zk response
var connectRequest = connection.UserData as Request <ZookResponse>;
if (connectRequest != null)
{
connection.UserData = null;
var connectResponseBuffer = new byte[messageLength];
Buffer.BlockCopy(payload, buffer.Offset + 4, connectResponseBuffer, 0, messageLength);
return(new ZookResponse(connectRequest.SeqID, connectResponseBuffer));
}
var xid = NetworkBitConverter.ToInt32(payload, buffer.Offset + 4);
var zxid = NetworkBitConverter.ToInt64(payload, buffer.Offset + 8);
var err = NetworkBitConverter.ToInt32(payload, buffer.Offset + 16);
var bodylength = messageLength - 16;
if (bodylength < 0)
{
throw new BadProtocolException("illegality message length.");
}
byte[] bodyBytes = null;
if (bodylength > 0)
{
bodyBytes = new byte[bodylength];
Buffer.BlockCopy(payload, buffer.Offset + 20, bodyBytes, 0, bodyBytes.Length);
}
return(new ZookResponse(xid, zxid, (Data.ZoookError)err, bodyBytes));
}
/// <summary>
/// 解析头部
/// </summary>
/// <param name="packet"></param>
/// <param name="datas"></param>
/// <param name="count"></param>
/// <param name="giveupCount"></param>
/// <returns></returns>
protected unsafe override bool ParseHeader(Packet _packet, ArraySegment <byte> datas)
{
InnerTunnelPacket packet = _packet as InnerTunnelPacket;
if (packet == null)
{
return(false);
}
if (datas.Array[datas.Offset] != 0x0d || datas.Array[datas.Offset + 1] != 0x0a)
{
return(false);
}
packet.ContentLength = NetworkBitConverter.ToInt32(
datas.Array[datas.Offset + 2],
datas.Array[datas.Offset + 3],
datas.Array[datas.Offset + 4],
datas.Array[datas.Offset + 5]);
packet.Action = datas.Array[datas.Offset + 6];
packet.ClientIdentity = NetworkBitConverter.ToInt64(
datas.Array[datas.Offset + 7],
datas.Array[datas.Offset + 8],
datas.Array[datas.Offset + 9],
datas.Array[datas.Offset + 10],
datas.Array[datas.Offset + 11],
datas.Array[datas.Offset + 12],
datas.Array[datas.Offset + 13],
datas.Array[datas.Offset + 14]);
packet.ServicePort = NetworkBitConverter.ToInt32(
datas.Array[datas.Offset + 15],
datas.Array[datas.Offset + 16],
datas.Array[datas.Offset + 17],
datas.Array[datas.Offset + 18]);
return(true);
}
