这是我修改过的示例代码,您可以看到您可以从此示例接收和发送。方法测试充当客户端,这可以是一个不同的过程,现在我已在不同的线程中进行模拟。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Threading;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
// Data to return
byte[] ret = { 0xfe, 0xfd, 0x09, 0x00, 0x00, 0x00, 0x00 };
// tell the user that we are waiting
Console.WriteLine("Waiting for UDP Connection...");
// Create a new socket to listen from
Socket Skt = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
Skt.EnableBroadcast = true;
Skt.Bind(new IPEndPoint(IPAddress.Loopback, 27900));
try
{
// Blocks until a message returns on this socket from a remote host.
Byte[] receiveBytes = new byte[48];
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint senderRemote = (EndPoint)sender;
Thread thr = new Thread(new ThreadStart(Test));
thr.Start();
Skt.ReceiveFrom(receiveBytes, ref senderRemote);
string returnData = Encoding.UTF8.GetString(receiveBytes).Trim();
Console.WriteLine("This is the message you received " + returnData.ToString());
// Sent return data
int sent = Skt.SendTo(ret, senderRemote);
Console.WriteLine("Sent {0} bytes back", sent);
Skt.Close();
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
Console.ReadLine();
}
public static void Test()
{
byte[] ret = { 0xfe, 0xfd, 0x09, 0x00, 0x00, 0x00, 0x00 };
Socket Skt = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
Skt.EnableBroadcast = true;
IPEndPoint test=new IPEndPoint(IPAddress.Loopback, 27900);
int sent = Skt.SendTo(ret, test);
try
{
// Blocks until a message returns on this socket from a remote host.
Byte[] receiveBytes = new byte[48];
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint senderRemote = (EndPoint)sender;
Skt.ReceiveFrom(receiveBytes, ref senderRemote);
string returnData = Encoding.UTF8.GetString(receiveBytes).Trim();
Console.WriteLine("This is the message you received " + returnData.ToString());
// Sent return data
//int sent = Skt.SendTo(ret, senderRemote);
Console.WriteLine("Sent {0} bytes back", sent);
Skt.Close();
}
catch (Exception ex)
{
}
}
}
}