c# - 如何序列化媒体对象(音频和图片)以进行套接字传输？

Question

我希望我的应用程序能够通过套接字与PC客户端通信。
我已经知道如何对字符串执行此操作。

我的问题是，我希望能够发送音频文件和图片，如何将iamge/音频文件转换为字符串/位流并发送呢？

这是我的套接字类(class):

public class SocketClient
{
    Socket socket = null;
    static ManualResetEvent clientDone = new ManualResetEvent(false);
    const int TIMEOUT_MILLISECONDS = 5000;
    const int MAX_BUFFER_SIZE = 2048;

    public SocketClient()
    {
        socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    }

    public string Send(string serverName, int portNumber, string data)
    {
        string response = "Timeout";

        if (socket != null)
        {
            SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
            socketEventArg.RemoteEndPoint = new DnsEndPoint(serverName, portNumber);

            socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)
            {
                response = e.SocketError.ToString();
                clientDone.Set();
            });

            byte[] payload = Encoding.UTF8.GetBytes(data);
            socketEventArg.SetBuffer(payload, 0, payload.Length);
            clientDone.Reset();
            socket.SendToAsync(socketEventArg);

            clientDone.WaitOne(TIMEOUT_MILLISECONDS);
        }
        else
        {
            response = "not initialized";
        }
        return response;
    }

    public string Recieve(int portNumber)
    {
        string response = "Timeout";

        if (socket != null)
        {
            SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
            socketEventArg.SetBuffer(new Byte[MAX_BUFFER_SIZE], 0, MAX_BUFFER_SIZE);

            socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)
            {
                if (e.SocketError == SocketError.Success)
                {
                    response = Encoding.UTF8.GetString(e.Buffer, e.Offset, e.BytesTransferred);
                    response.Trim('\0');
                }
                else
                {
                    response = e.SocketError.ToString();
                }

                clientDone.Set();
            });

            socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Any, portNumber);

            clientDone.Reset();
            socket.ReceiveFromAsync(socketEventArg);
            clientDone.WaitOne(TIMEOUT_MILLISECONDS);
        }

        return response;
    }

    public void Close()
    {
        socket.Close();
    }
}

我想对其进行修改，以便能够发送图片和音频文件。

Answer 1

您当前的Send方法使用字符串属性存储数据。您可以使用字节数组或包含数据的流来重建它。

您可以使用此示例查看如何从图像进行流传输和返回，尽管这不使用套接字而是使用本地存储。这样做的原理保持不变:
http://blogs.microsoft.co.il/blogs/tomershamam/archive/2010/10/12/saving-and-loading-captured-image-to-and-from-wp7-isolated-storage.aspx