public static MessageHeader ParseHeader(byte[] bytes)
{
if (bytes.Length != MsgHeaderLength)
{
throw new Exception("参数错误");
}
MessageHeader recieveHeader = new MessageHeader();
var cursor = 0;
var shortLength = BuildTcpProto.GetTypeLength <short>();
var intLength = BuildTcpProto.GetTypeLength <int>();
var uintLength = BuildTcpProto.GetTypeLength <uint>();
var signBytes = bytes.Take(shortLength).ToArray();
recieveHeader.StartSign = Util.BytesToShort(signBytes);
cursor += signBytes.Length;
var lengthBytes = bytes.Skip(cursor).Take(intLength).ToArray();
recieveHeader.Length = Util.BytesToInt(lengthBytes);
cursor += lengthBytes.Length;
var crc32Bytes = bytes.Skip(cursor).Take(intLength).ToArray();
recieveHeader.Crc32 = Util.BytesToUInt(crc32Bytes);
cursor += crc32Bytes.Length;
return(recieveHeader);
}
private void DealtMessage(byte[] buffer, ref byte[] tempBytes, ref int cursor)
{
if (buffer == null || buffer.Length == 0)
{
return;
}
if (tempBytes == null)
{
tempBytes = new byte[ConfigsHelper.BufferSize];
}
//总字节长度
var cacheLength = buffer.Length + cursor;
//需要扩展的空间倍数
var ext = (int)Math.Ceiling((cacheLength - tempBytes.Length) / (double)ConfigsHelper.BufferSize);
if (ext > 0)
{
var extBytes = new byte[ext * ConfigsHelper.BufferSize];
tempBytes = tempBytes.Concat(extBytes).ToArray();
}
buffer.CopyTo(tempBytes, cursor);
cursor += buffer.Length;
while (cursor >= BuildTcpProto.MsgHeaderLength)
{
var headerBytes = tempBytes.Take(BuildTcpProto.MsgHeaderLength).ToArray();
var header = BuildTcpProto.ParseHeader(headerBytes);
if (cursor >= header.Length)
{
var msgBytes = tempBytes.Take(header.Length).ToArray();
int surplusCount = cursor - header.Length;
var surplusBytes = tempBytes.Skip(header.Length).Take(surplusCount).ToArray();
tempBytes = surplusBytes;
cursor -= header.Length;
var msgstr = BuildTcpProto.ParseMessage(header, msgBytes);
Console.WriteLine(msgstr);
}
else
{
break;
}
}
}
public static MessageHeader SeperatePecketBuffer(byte[] pBytes, out string message)
{
var msgResult = string.Empty;
var headerLength = GetStructLength <MessageHeader>();
var headerBytes = pBytes.Take(headerLength).ToArray();
var messageBytes = pBytes.Skip(headerLength).Take(pBytes.Length - headerLength).ToArray();
MessageHeader recieveHeader = new MessageHeader();
var cursor = 0;
var shortLength = BuildTcpProto.GetTypeLength <short>();
var intLength = BuildTcpProto.GetTypeLength <int>();
var uintLength = BuildTcpProto.GetTypeLength <uint>();
var signBytes = headerBytes.Take(shortLength).ToArray();
recieveHeader.StartSign = Util.BytesToShort(signBytes);
cursor += signBytes.Length;
var lengthBytes = headerBytes.Skip(cursor).Take(intLength).ToArray();
recieveHeader.Length = Util.BytesToInt(lengthBytes);
cursor += lengthBytes.Length;
var crc32Bytes = headerBytes.Skip(cursor).Take(intLength).ToArray();
recieveHeader.Crc32 = Util.BytesToUInt(crc32Bytes);
cursor += crc32Bytes.Length;
var rmsg = Encoding.UTF8.GetString(messageBytes);
var rCrc32 = Crc32Algorithm.Compute(messageBytes, 0, messageBytes.Length);
if (rCrc32 == recieveHeader.Crc32)
{
message = rmsg;
}
else
{
throw new Exception("wdnmd");
}
return(recieveHeader);
}
