利用udp协议进行类实体的传送，首先需要把传送的类 制作成DLL链接库，然后服务器端和客户端都要进行该DLL库的引用。在服务器端需要对自定义的类实体进行序列化，传送给客户端后，客户端需要对接收的类实体进行发序列化，恢复出原来的信息。以下是步骤：
1，建立被传送类的DLL文件
在VS2010上创建新项目，类库，然后把自定义类的代码写进该文档，这里定义了个人GPS跟踪的位置信息类，定义如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace GPSPointInfo {
[Serializable] //因为该类要被序列化传输，所以要在类前添加该标记
public class TimeDataObjector
{
public string stuffid; //个人的名字或者工号
public long x; //所在位置的经度
public long y; //所在位置的纬度
public long Time; //现在的时间
public string Place; //所在地方的名字
}
}
然后点击“生成”-》”生成解决方案“，然后去工程的debug文件夹下就可以找到该类的DLL库，
2，
编写客户端，这是需要引用书面的DLL库，点击“项目”-》“添加引用”，然后找到刚才的DLL库添加进来，再在客户端using 名字;名字是刚才类的空间域名，这里PointObjector。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters;
using System.Runtime.Serialization;
using System.Threading;
using System.IO;
using PointObjector;
namespace UDPClient {
class Program {
public static void StartListener() {
Console.WriteLine("开始接收数据：");
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 3222);
EndPoint ep = (EndPoint)iep; s.Bind(iep);
s.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(IPAddress.Parse("224.0.0.1"))); byte[] b = new byte[1024];
while (true)
{
int length = s.ReceiveFrom(b, ref ep);
MemoryStream MStream = new MemoryStream();
MStream.Position = 0;
MStream.Write(b, 0, length);
MStream.Flush();
MStream.Position = 0;
BinaryFormatter BFormatter = new BinaryFormatter();
defineclass TDO = new defineclass();
TDO = BFormatter.Deserialize(MStream) as defineclass;
Console.WriteLine("name:{0}" + "\r\n" + "age:{1}" + "\r\n" + "gender:{2}" + "\r\n" + "x:{3}" + "\r\n" + "y:{4}" + "\r\n", TDO.name, TDO.age, TDO.gender, TDO.x, TDO.y);
}
}
static void Main(string[] args)
{
Thread thread = new Thread(new ThreadStart(StartListener));
thread.Start();
}
}
}
3，编写服务器端，和客户端一样也要调用刚才DLL库
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters;
using System.Runtime.Serialization;
using PointObjector;
namespace UDPServer {
class Program {
public static Stream serializeStream(object param)
{
DataContractSerializer serializer = new DataContractSerializer(param.GetType());
MemoryStream stream = new MemoryStream();
serializer.WriteObject(stream, param);
return stream;
}
public static void send()
{
while (true)
{
Console.WriteLine("请输入内容：" + "\r\n");
defineclass TempObjector = new defineclass();
TempObjector.name = Console.ReadLine();
TempObjector.age = Int32.Parse(Console.ReadLine());
TempObjector.gender = Console.ReadLine();
TempObjector.x = Int32.Parse(Console.ReadLine());
TempObjector.y = Int32.Parse(Console.ReadLine());
Socket groupsocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("224.0.0.1"), 3222);
EndPoint ep = (EndPoint)iep;
MemoryStream mStream = new MemoryStream();
BinaryFormatter bformatter = new BinaryFormatter();
bformatter.Serialize(mStream, TempObjector); //序列化
mStream.Flush();
byte[] buffer = new byte[500];
mStream.Position = 0;
//mStream.Read(buffer, 0, buffer.Length);
int i = mStream.Read(buffer, 0, buffer.Length);
Console.WriteLine("i:{0}",i);
groupsocket.SendTo(buffer, ep);
groupsocket.Close();
}
}
static void Main(string[] args)
{
send();
return;
}
}
}
C#