Question

以下是用c＃编写的示例服务器程序，它从客户端接收id。我的示例代码如下。我想将一个字符串数组发送到客户端，并在客户端控制台上显示。示例数组字符串可以是：

string[] arr1 = new string[] { "one", "two", "three" };

我需要使用以下服务器和客户端代码添加哪些其他代码？

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace server
{
  class Program
  {
    static void Main(string[] args)
    {
      TcpListener tcpListener = new TcpListener(IPAddress.Any, 1234);
      tcpListener.Start();
      while (true)
      {
        TcpClient tcpClient = tcpListener.AcceptTcpClient();
        byte[] data = new byte[1024];
        NetworkStream ns = tcpClient.GetStream();

        int recv = ns.Read(data, 0, data.Length);
        string id = Encoding.ASCII.GetString(data, 0, recv);

        Console.WriteLine(id);
      }
    }
  }
}

Answer 1

由于Tcp是基于流的协议，我建议你使用更高级别的普通byte[]。如果您只需要从客户端向服务器发送字符串，反之亦然，我认为两端的StreamReader和StreamWriter都可以正常工作。在StreamWriter方面，您已获得WriteLine(string)方法发送给客户，StreamReader方法类似ReadLine()。

以下是您可以应用于模型的简化：

服务器端：

TcpClient client; //Let's say it's already initialized and connected properly
StreamReader reader = new StreamReader(client.GetStream());

while(client.Connected)
{
    string message = reader.ReadLine(); //If the string is null, the connection has been lost.
}

客户方：

TcpClient client; //Same, it's initialized and connected
StreamWriter writer = new StreamWriter(client.GetStream());
writer.AutoFlush = true; //Either this, or you Flush manually every time you send something.

writer.WriteLine("My Message"); //Every message you want to send

StreamWriter将以新行结束每条消息，以便StreamReader知道何时收到完整字符串。

请注意，TCP连接是全双工连接。这意味着您可以同时发送和接收数据。如果要实现类似的功能，请查看WriteLineAsync(string)和ReadLineAsync()方法。

如果要发送数组，请建立一个简单的协议，如下所示：

发送字符串[]的长度。示例：writer.WriteLine(myArray.Length.ToString);
接收并解析此长度
在服务器端一个接一个地发送所有字符串
在客户端的for循环中接收所有字符串。

收到所有字符串后，请重复此过程。

Answer 2

将字符串数组发送到客户端

TcpListener tcpListener = new TcpListener(IPAddress.Any, 1234);
        tcpListener.Start();  
        while (true)
        {                     
            TcpClient tcpClient = tcpListener.AcceptTcpClient();
            byte[] data = new byte[1024];
            NetworkStream ns = tcpClient.GetStream();
            string[] arr1 = new string[] { "one", "two", "three" };
            var serializer = new XmlSerializer(typeof(string[]));
            serializer.Serialize(tcpClient.GetStream(), arr1);
            tcpClient.GetStream().Close()
            tcpClient.Close();

              int recv = ns.Read(data, 0, data.Length);
               in this line

            string id = Encoding.ASCII.GetString(data, 0, recv);

            Console.WriteLine(id);

            }               
        }

客户端

         try
         {
            byte[] data = new byte[1024];
            string stringData;

            TcpClient tcpClient = new TcpClient("127.0.0.1", 1234);
            NetworkStream ns = tcpClient.GetStream();             

            var serializer = new XmlSerializer(typeof(string[]));
            var stringArr = (string[])serializer.Deserialize(tcpClient.GetStream());

            foreach (string s in stringArr)
            {
                Console.WriteLine(s);
            }

            string input = Console.ReadLine();
            ns.Write(Encoding.ASCII.GetBytes(input), 0, input.Length);
            ns.Flush();


        }
        catch (Exception e)
        {
            Console.Write(e.Message);
        }

        Console.Read();

从服务器发送消息并从客户端接收

2 个答案: