使用 C# 连接到 gps deamon 服务器

Connect to a gps deamon server using C#

我正在使用连接到 raspberry pi 运行 gpsd 服务的 gps。我正在尝试使用 tcp 连接到该服务,但无法正常工作。我也没有找到任何关于它的文档。

这是我现在拥有的代码:

  private static void Main(string[] args)
  {
        Console.WriteLine($"Trying to connect to {ServerAddress}...");
        var client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

        client.Connect(ServerAddress, 80);
        var result = new byte[256];
        client.Receive(result);
        Test();
  }

有人可以告诉我它是如何完成的,或者给我一个 link 文档或 c# 示例。

从这个 source 查看有关 C 示例的部分。

核心C客户端是套接字receiver

如果您需要功能齐全的客户端,我在最初的评论中建议了解决方法

you could use the standard client on the Raspberry Pi and build a new network service on the Raspberry, to which you could connect in a more standard way from c#"

C# 侦听器

否则您可以尝试创建一个基本的 C# 侦听器:按照 msdn How-To.

public void createListener()
{
    // Create an instance of the TcpListener class.
    TcpListener tcpListener = null;
    IPAddress ipAddress = Dns.GetHostEntry("localhost").AddressList[0];
    try
    {
        // Set the listener on the local IP address 
        // and specify the port.
        tcpListener = new TcpListener(ipAddress, 13);
        tcpListener.Start();
        output = "Waiting for a connection...";
    }
    catch (Exception e)
    {
        output = "Error: " + e.ToString();
        MessageBox.Show(output);
    }
    while (true)
    {
        // Always use a Sleep call in a while(true) loop 
        // to avoid locking up your CPU.
        Thread.Sleep(10);
        // Create a TCP socket. 
        // If you ran this server on the desktop, you could use 
        // Socket socket = tcpListener.AcceptSocket() 
        // for greater flexibility.
        TcpClient tcpClient = tcpListener.AcceptTcpClient();
        // Read the data stream from the client. 
        byte[] bytes = new byte[256];
        NetworkStream stream = tcpClient.GetStream();
        stream.Read(bytes, 0, bytes.Length);
        SocketHelper helper = new SocketHelper();
        helper.processMsg(tcpClient, stream, bytes);
    }
}

完整、详细的实施将超出此处的范围。

边注

请记住,您需要在循环时睡觉。

可能更简单的解决方案

但是,乍一看,利用本机客户端绑定似乎是更简单的方法。

例如gps_read()被描述为

Blocking read for data from the daemon.

这里的想法是调用一个C++ wrapper from C# and to write the client's unit operations as described in this other