如何在 UWP 项目中使用套接字发送文件的 byte[]？

Question

我在这里 https://msdn.microsoft.com/en-us/windows/uwp/networking/sockets 使用了 Microsoft 的这个样本来将数据从一个发送到另一个并且它有效。但是，如何使用套接字发送字节 [] 或流（例如图像或视频）？

服务器：

private async void btnConnect_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                StreamSocketListener socketListener = new StreamSocketListener();

                socketListener.ConnectionReceived += SocketListener_ConnectionReceived;

                Windows.Networking.HostName host = new Windows.Networking.HostName("192.168.1.4");
                await socketListener.BindEndpointAsync(host, 8887.ToString());
            }
            catch (Exception ex)
            {
                //Handle exception.
            }

        }

private async void SocketListener_ConnectionReceived(StreamSocketListener sender,
     StreamSocketListenerConnectionReceivedEventArgs args)
        {

            Stream inStream = args.Socket.InputStream.AsStreamForRead();
            StreamReader reader = new StreamReader(inStream);
            string request = await reader.ReadLineAsync();

            Stream outStream = args.Socket.OutputStream.AsStreamForWrite();
            StreamWriter writer = new StreamWriter(outStream);
            await writer.WriteLineAsync(request);
            await writer.FlushAsync();
        }

客户：

private async void btnSend_Click(object sender, RoutedEventArgs e)
{
try
{

    Windows.Networking.Sockets.StreamSocket socket = new Windows.Networking.Sockets.StreamSocket();

    Windows.Networking.HostName serverHost = new Windows.Networking.HostName("192.168.1.4");

    string serverPort = "8887";
    await socket.ConnectAsync(serverHost, serverPort);

    Stream streamOut = socket.OutputStream.AsStreamForWrite();
    StreamWriter writer = new StreamWriter(streamOut);
    string request = "test";
    await writer.WriteLineAsync(request);
    await writer.FlushAsync();

    //Read data from the echo server.
    Stream streamIn = socket.InputStream.AsStreamForRead();
    StreamReader reader = new StreamReader(streamIn);
    string response = await reader.ReadLineAsync();
}
catch (Exception ex)
{
    //Handle exception here.            
}
}

Answer 1

使用 Stream 的 Write 方法允许您传入字节数组。

streamOut.Write(myByteArray, 0, myByteArray.Length);

StreamWriter更像是一个帮手。您不需要 StreamReader 或 StreamWriter 即可 read/write 到 Stream。他们很有帮助，但实际上并没有做你想做的事。

请记住，您可能不想一次发送大量款项。在那种情况下，您将循环直到完成所有发送。参考这个问题：sending a large amount of data throught TCP socket

如何在 UWP 项目中使用套接字发送文件的 byte[]？

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