public bool SendCommandToServer(string serverIp, BaseCommand command, ClientCommandType clientCommandType)
{
var commandHeader = new ClientCommandHeader
{
Type = clientCommandType
};
var client = new TcpClient();
try
{
client.Connect(serverIp, Settings.ServerPort);
// + составить байты из ClientHeader и сериализации команды (+prepend with length)
byte[] messageBytes = CommandUtils.ConcatByteArrays(commandHeader.ToBytes(), command.ToBytes());
byte[] messageBytesWithLength = CommandUtils.PrependLengthBytes(messageBytes);
// + отправить байты в NetworkStream
NetworkStream networkStream = client.GetStream();
networkStream.Write(messageBytesWithLength, 0, messageBytesWithLength.Length);
// + Обработать ответ
HandleServerResponse(client);
}
catch (SocketException)
{
Error("Cannot sent command to server");
return(false);
}
return(true);
}
private static void ParseMessageBytesAndRespondToClient(byte[] bytes, System.Net.Sockets.TcpClient tcpClient)
{
if (bytes.Length >= ClientCommandHeader.GetLength())
{
ClientCommandHeader commandHeader = ClientCommandHeader.FromBytes(bytes);
IEnumerable <byte> commandBytes = bytes.Skip(ClientCommandHeader.GetLength());
var commandType = commandHeader.Type;
BaseCommand baseCommand = commandsFromBytes[commandType].Invoke(commandBytes.ToArray());
switch (commandType)
{
//case CommandType.SendChatMessage:
// if (OnStringCommand != null)
// OnStringCommand((StringCommand)baseCommand, tcpClient);
// break;
//case CommandType.Single:
// if (OnSingleCommand != null)
// OnSingleCommand((SingleCommand)baseCommand, tcpClient);
// break;
//case CommandType.File:
// if (OnSingleCommand != null)
// OnFileCommand((FileCommand)baseCommand, tcpClient);
// break;
//case CommandType.SaveUser:
// if (OnSingleCommand != null)
// OnSaveUserCommand((SaveUserCommand)baseCommand, tcpClient);
// break;
}
}
}
public void HandleServerResponse(object server)
{
/** Алгоритм:
* Определить тип сообщения
* в зависимости от этого,
* распарсить байты сообщения (подойдет Dictionary с методами FromStream.)
* предпринять действия
* отправить ответ.
*
*
*
*
*/
var tcpClient = (System.Net.Sockets.TcpClient)server;
tcpClient.ReceiveTimeout = 3;
NetworkStream clientStream = tcpClient.GetStream();
var ms = new MemoryStream();
var binaryWriter = new BinaryWriter(ms);
var messageLengthBytes = new byte[4];
var messageBytes = new byte[tcpClient.ReceiveBufferSize];
int readCount;
int totalReadMessageBytes = 0;
clientStream.Read(messageLengthBytes, 0, sizeof(int));
int messageLength = CommandUtils.BytesToInt(messageLengthBytes);
while ((readCount = clientStream.Read(messageBytes, 0, tcpClient.ReceiveBufferSize)) != 0)
{
binaryWriter.Write(messageBytes, 0, readCount);
totalReadMessageBytes += readCount;
if (totalReadMessageBytes >= messageLength)
{
break;
}
}
if (ms.Length > 0)
{
ParseResponseBytes(ms.ToArray());
}
void ParseResponseBytes(byte[] bytes)
{
if (bytes.Length >= ClientCommandHeader.GetLength())
{
}
}
}
