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サーバーからクライアントマシンにデータを送信するために、C＃でソケットを使用しています。実際には私は3つの異なるマシンからkinectストリームをキャプテンキャプチャを作成しました。私は、記録プロセスを開始して停止するためにサーバーから残りのデバイスに信号を送信するために、サーバーとクライアントの通信を生成したいと考えています。録音を開始するには左クリックし、録音を停止するには右クリックしてください。私のコードは次の通りです：C＃マウスイベントを使用してサーバーからクライアントにフラグを送信する
public Form1()
{
InitializeComponent();
this.MouseClick += mouseClick1;
Thread thread = new Thread(() => StartServer(message));
thread.Start(); // server is begining
}
private void mouseClick1(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
message = "start";
try
{
obj = new Capturer(dirPath + name + "_" + surname, 20);
}
catch (Exception e1)
{
Console.WriteLine("The process failed: {0}", e1.ToString());
}
if (clientSockets.Count > 0)
{
Thread.Sleep(10);
foreach (Socket socket1 in clientSockets)
socket1.Send(Encoding.ASCII.GetBytes(message)); //send everything to all clients as bytes
}
else
{
serverSocket.BeginAccept(new AsyncCallback(acceptCallback), null); //to receive another client
}
}
else if (e.Button == MouseButtons.Right)
{
message = "stop";
obj.flag2 = true;
if (clientSockets.Count > 0)
{
Thread.Sleep(10);
foreach (Socket socket1 in clientSockets)
socket1.Send(Encoding.ASCII.GetBytes(message)); //send everything to all clients as bytes
}
else
{
serverSocket.BeginAccept(new AsyncCallback(acceptCallback), null); //to receive another client
}
}
}
public void StartServer(String message) {
serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
serverSocket.Bind(new IPEndPoint(IPAddress.Any, PORT_NO));
serverSocket.Listen(4); //the maximum pending client, define as you wish
serverSocket.BeginAccept(new AsyncCallback(acceptCallback), null);
string result = "";
do
{
result ="asdf";
} while (result.ToLower().Trim() != "exit");
}
private const int BUFFER_SIZE = 4096;
private static byte[] buffer = new byte[BUFFER_SIZE]; //buffer size is limited to BUFFER_SIZE per message
private static List<Socket> clientSockets = new List<Socket>(); //may be needed by you
private static void acceptCallback(IAsyncResult result)
{ //if the buffer is old, then there might already be something there...
Socket socket = null;
try
{
socket = serverSocket.EndAccept(result); // The objectDisposedException will come here... thus, it is to be expected!
//Do something as you see it needs on client acceptance
clientSockets.Add(socket);
socket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(receiveCallback), socket);
string msg = "start";
//socket.Send(Encoding.ASCII.GetBytes(msg));
if (clientSockets.Count > 0)
{
Thread.Sleep(10);
foreach (Socket socket1 in clientSockets)
socket1.Send(Encoding.ASCII.GetBytes(msg)); //send everything to all clients as bytes
}
else
{
serverSocket.BeginAccept(new AsyncCallback(acceptCallback), null); //to receive another client
}
}
catch (Exception e)
{ // this exception will happen when "this" is be disposed...
//Do something here
Console.WriteLine(e.ToString());
}
}
const int MAX_RECEIVE_ATTEMPT = 10;
static int receiveAttempt = 0; //this is not fool proof, obviously, since actually you must have multiple of this for multiple clients, but for the sake of simplicity I put this
private static void receiveCallback(IAsyncResult result)
{
Socket socket = null;
try
{
socket = (Socket)result.AsyncState; //this is to get the sender
if (socket.Connected)
{ //simple checking
int received = socket.EndReceive(result);
if (received > 0)
{
byte[] data = new byte[received]; //the data is in the byte[] format, not string!
Buffer.BlockCopy(buffer, 0, data, 0, data.Length); //There are several way to do this according to http://stackoverflow.com/questions/5099604/any-faster-way-of-copying-arrays-in-c in general, System.Buffer.memcpyimpl is the fastest
//DO SOMETHING ON THE DATA int byte[]!! Yihaa!!
Console.WriteLine(Encoding.UTF8.GetString(data)); //Here I just print it, but you need to do something else
//Message retrieval part
//Suppose you only want to declare that you receive data from a client to that client
string msg = "I receive your message on: " + DateTime.Now;
socket.Send(Encoding.ASCII.GetBytes(msg)); //Note that you actually send data in byte[]
Console.WriteLine("I sent this message to the client: " + msg);
receiveAttempt = 0; //reset receive attempt
//socket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(receiveCallback), socket); //repeat beginReceive
}
else if (receiveAttempt < MAX_RECEIVE_ATTEMPT)
{ //fail but not exceeding max attempt, repeats
++receiveAttempt; //increase receive attempt;
socket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(receiveCallback), socket); //repeat beginReceive
}
else
{ //completely fails!
Console.WriteLine("receiveCallback fails!"); //don't repeat beginReceive
receiveAttempt = 0; //reset this for the next connection
}
}
}
catch (Exception e)
{ // this exception will happen when "this" is be disposed...
Console.WriteLine("receiveCallback fails with exception! " + e.ToString());
}
}
クライアントでその値を送信するには、どのようにフラグをサーバーに解析できますか？静的型のサーバ関数をここで変更することは可能ですか？今のように、コードはサーバーを起動し、文字列 "start"をクライアントに送信します。 boolフラグの文字列メッセージを送信するにはどうすればよいですか？私の問題は、私のコールバック関数の静的型にあります。それは、引数としてAsyncCallBackの例のためのメッセージを追加することが可能である：
まずserverSocket.BeginAccept(new AsyncCallback(acceptCallback), null);
を使用して、オブジェクトを取ります。 ;） すばらしいです！ – Ian
：P私はそのような良い先生がいました！ @Ianは、AsyncCallbackの内部に引数を追加するのは可能でしょうか？ –
いいえ、私はあなたが速く追いついていると思います。 = D – Ian