网络 .dll 发送字符串

Question

我将此数据包 class (.dll) 用于我的多线程客户端-服务器应用程序。但是我不知道如何用我的代码发送字符串 - 请帮助：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Net;
using System.Runtime.Serialization.Formatters.Binary;
using System.Net.NetworkInformation;

namespace ServerData
{
  [Serializable]
  public class Packet
  {
    public List<string> Gdata;
    public int packetInt;
    public bool packetBool;
    public string senderID;
    public PacketType packetType;

    public Packet(PacketType type, string senderID)
    {
        Gdata = new List<string>();
        this.senderID = senderID;
        this.packetType = type;
    }

    public Packet(byte[] packetbytes)
    {
        BinaryFormatter bf = new BinaryFormatter();
        MemoryStream ms = new MemoryStream(packetbytes);
        Packet p = (Packet)bf.Deserialize(ms);
        ms.Close();
        this.Gdata = p.Gdata;
        this.packetInt = p.packetInt;
        this.packetType = p.packetType;
        this.senderID = p.senderID;
        this.packetBool = p.packetBool;

    }

    public byte[] ToBytes()
    {
        BinaryFormatter bf = new BinaryFormatter();
        MemoryStream ms = new MemoryStream();

        bf.Serialize(ms, this);
        byte[] bytes = ms.ToArray();
        ms.Close();
        return bytes;

    }

    public static string GetIP4Address()
    {
        IPAddress[] ips = Dns.GetHostAddresses(Dns.GetHostName());

        foreach (IPAddress i in ips) 
        {
            if (i.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
            {
                return i.ToString();
            }
        }
        return "127.0.0.1";
    }
    public static string GetIP6Address()
    {
        string macAddresses = string.Empty;

        foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
        {
            if (nic.OperationalStatus == OperationalStatus.Up)
            {
                macAddresses += nic.GetPhysicalAddress().ToString();
                break;
            }
        }

        return macAddresses;
    }
}
public enum PacketType
{
    Registration,
    Command,
    Download,
    Inquiry,
    Reponse,
    Confirmation
}
}

server/client中的发送函数：

        public void SendRegistrationPacket() // for example this send an packet from the type registration but in this moment i can "know" whats in the packet by "asking" what type it is...
    {
        Packet p = new Packet(PacketType.Registration, id);
        clientSocket.Send(p.ToBytes()); //clientSocket is the socket where the client is connected^^

    }

传入数据的管理器（不读取只处理读取的数据）：

    void DataManager(Packet p)
    {
        switch (p.packetType)
        {
            case PacketType.Registration:
                listBox1.Items.Add("Got Registration Packet");
                listBox1.Items.Add("Sending Registration...");
                break;
        }
    }

如何使用这些数据包发送字符串和 "encoding" 它们？

Answer 1

这个class提供了一个public List<string> Gdata;。您可以向该对象添加任意数量的字符串，序列化程序会处理它。所以例如你可以写

Packet p = new Packet(PacketType.Command, 123);
p.Gdata.Add("SomeString which I want to execute");

clientSocket.Send(p.ToBytes());

在接收端，您将反序列化 Packet 对象并像往常一样使用 Gdata 字段。

byte[] received = new byte[1024]; 
int num_received = someSocket.Receive(received);
Packet decoded = new Packet(received.Take(num_received).ToArray());
Console.WriteLine("The first string in the list: " + decoded.Gdata[0]);

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