/// <summary>
/// 是否是断开连接请求
/// </summary>
/// <param name="message">消息对象</param>
/// <returns>是否是断开连接请求</returns>
public override bool IsDisconnectRequest(INetworkMessage message)
{
TcpNetworkInfo networkInfo = message as TcpNetworkInfo;
if (networkInfo != null)
{
if (networkInfo.Command == -1 && networkInfo.Subcommand == -1)
{
return(true);
}
}
return(false);
}
/// <summary>
/// 封装消息
/// </summary>
/// <param name="message">消息对象</param>
/// <returns>封装后的字节数组</returns>
public override byte[] EncapsulatedMessage(INetworkMessage message)
{
TcpNetworkInfo networkInfo = message as TcpNetworkInfo;
byte[] checkCodeByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.CheckCode));
byte[] bodyLengthByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.BodyLength));
byte[] sessionidByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.Sessionid));
byte[] commandByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.Command));
byte[] subcommandByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.Subcommand));
byte[] encryptByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.Encrypt));
byte[] returnCodeByte = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(networkInfo.ReturnCode));
byte[] messageBodyByte = new byte[networkInfo.BodyLength];
if (networkInfo.Messages != null)
{
int copyIndex = 0;
for (int i = 0; i < networkInfo.Messages.Count; i++)
{
byte[] bytes = Encoding.UTF8.GetBytes(networkInfo.Messages[i]);
BitConverter.GetBytes(IPAddress.HostToNetworkOrder(bytes.Length)).CopyTo(messageBodyByte, copyIndex);
copyIndex += 4;
bytes.CopyTo(messageBodyByte, copyIndex);
copyIndex += bytes.Length;
}
}
byte[] totalByte = new byte[32 + networkInfo.BodyLength];
checkCodeByte.CopyTo(totalByte, 0);
bodyLengthByte.CopyTo(totalByte, 4);
sessionidByte.CopyTo(totalByte, 8);
commandByte.CopyTo(totalByte, 16);
subcommandByte.CopyTo(totalByte, 20);
encryptByte.CopyTo(totalByte, 24);
returnCodeByte.CopyTo(totalByte, 28);
messageBodyByte.CopyTo(totalByte, 32);
return(totalByte);
}
/// <summary>
/// 接收消息
/// </summary>
/// <param name="client">客户端</param>
/// <returns>接收到的消息对象</returns>
protected override INetworkMessage ReceiveMessage(Socket client)
{
try
{
//接收消息头（消息校验码4字节 + 消息体长度4字节 + 身份ID8字节 + 主命令4字节 + 子命令4字节 + 加密方式4字节 + 返回码4字节 = 32字节）
int recvHeadLength = 32;
byte[] recvBytesHead = new byte[recvHeadLength];
while (recvHeadLength > 0)
{
byte[] recvBytes1 = new byte[32];
int alreadyRecvHead = 0;
if (recvHeadLength >= recvBytes1.Length)
{
alreadyRecvHead = client.Receive(recvBytes1, recvBytes1.Length, 0);
}
else
{
alreadyRecvHead = client.Receive(recvBytes1, recvHeadLength, 0);
}
recvBytes1.CopyTo(recvBytesHead, recvBytesHead.Length - recvHeadLength);
recvHeadLength -= alreadyRecvHead;
}
//接收消息体（消息体的长度存储在消息头的4至8索引位置的字节里）
byte[] bodyLengthBytes = new byte[4];
Array.Copy(recvBytesHead, 4, bodyLengthBytes, 0, 4);
int recvBodyLength = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(bodyLengthBytes, 0));
byte[] recvBytesBody = new byte[recvBodyLength];
while (recvBodyLength > 0)
{
byte[] recvBytes2 = new byte[recvBodyLength < 1024 ? recvBodyLength : 1024];
int alreadyRecvBody = 0;
if (recvBodyLength >= recvBytes2.Length)
{
alreadyRecvBody = client.Receive(recvBytes2, recvBytes2.Length, 0);
}
else
{
alreadyRecvBody = client.Receive(recvBytes2, recvBodyLength, 0);
}
recvBytes2.CopyTo(recvBytesBody, recvBytesBody.Length - recvBodyLength);
recvBodyLength -= alreadyRecvBody;
}
//解析消息
TcpNetworkInfo info = new TcpNetworkInfo();
info.CheckCode = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 0));
info.BodyLength = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 4));
info.Sessionid = IPAddress.NetworkToHostOrder(BitConverter.ToInt64(recvBytesHead, 8));
info.Command = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 16));
info.Subcommand = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 20));
info.Encrypt = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 24));
info.ReturnCode = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(recvBytesHead, 28));
info.Messages = new List <string>();
for (int i = 0; i < recvBytesBody.Length;)
{
byte[] bytes = new byte[4];
Array.Copy(recvBytesBody, i, bytes, 0, 4);
i += 4;
int number = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(bytes, 0));
bytes = new byte[number];
Array.Copy(recvBytesBody, i, bytes, 0, number);
i += number;
info.Messages.Add(Encoding.UTF8.GetString(bytes, 0, bytes.Length));
}
return(info);
}
catch (Exception)
{
return(null);
}
}