这个例子只是一个简单的连续发送数据,接收数据的DEMO。因为最近做一个项目,要求robot连续的通过Socket传回自己的当前的位置坐标,然后客户端接收到坐标信息,在本地绘制地图,实时显示robot的位置。
里面还有好多的问题,在实际的项目中一定要解决,不然肯定跑步起来。比如:消息边界问题(帧的边界)、消息命令的解析等
下面直接代码:
服务器的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace ConsoleApplication6
{
class Program
{
//定义接收缓冲数组,端口号,监听socket
private static byte[] buffer = new byte[1024];
private static int port = 8887;
private static Socket serverSocket;
static void Main(string[] args)
{
//服务器IP地址
IPAddress ip = IPAddress.Parse("127.0.0.1");
serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
serverSocket.Bind(new IPEndPoint(ip, port));//绑定IP地址:端口
serverSocket.Listen(10);//设定最多10个连接请求排队
Console.WriteLine("监听:" + serverSocket.LocalEndPoint.ToString());
//建立线程监听client连接请求
Thread myThread = new Thread(ListenClientConnection);
//myThread.IsBackground = true;
myThread.Start();
}//Main()
/// <summary>
/// 新线程:监听客户端连接
/// </summary>
private static void ListenClientConnection()
{
while (true)
{
Socket clientSocket = serverSocket.Accept();
clientSocket.Send(Encoding.UTF8.GetBytes("Server Say Hello"));
//没接收到一个连接,启动新线程接收数据
Thread receiveThread = new Thread(ReceiveMessage);
receiveThread.Start(clientSocket);
}//while
}//ListenClientConnection()
/// <summary>
/// 接收数据消息
/// </summary>
/// <param name="clientSocket">监听socket生成的普通通信socket</param>
private static void ReceiveMessage(object clientSocket)
{
Socket myClientSocket = (Socket)clientSocket;
while (true)
{
try
{
//通过myClientSocket接收数据
int receiveNumber = myClientSocket.Receive(buffer);
Console.WriteLine("接收客户端{0}消息{1}", myClientSocket.RemoteEndPoint.ToString(), Encoding.ASCII.GetString(buffer, 0, receiveNumber));
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
//关闭所有的Socket连接功能Receive、Send、Both
myClientSocket.Shutdown(SocketShutdown.Both);
myClientSocket.Close();
break;
}
}//while
}//ReceiveMessage()
}//class
}
客户端的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace ConsoleApplication7
{
class Program
{
private static byte[] buffer = new byte[1024];
static void Main(string[] args)
{
//设定服务器ip地址
IPAddress ip = IPAddress.Parse("127.0.0.1");
Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
clientSocket.Connect(new IPEndPoint(ip, 8887));
Console.WriteLine("连接服务器成功");
}
catch(Exception ex)
{
Console.WriteLine("服务器连接失败,请按回车退出");
return;
}
//通过clientSocket接收数据
int receiveNumber = clientSocket.Receive(buffer);
Console.WriteLine("接收服务器消息:{0}", Encoding.ASCII.GetString(buffer, 0, receiveNumber));
//启动新的线程,给Server连续发送数据
Thread sendThread = new Thread(SendMessage);
//把线程设置为前台线程,不然Main退出了线程就会死亡
sendThread.IsBackground = false;
sendThread.Start(clientSocket);
}//Main
/// <summary>
/// 启动新的线程,发送数据
/// </summary>
/// <param name="clientSocket"></param>
private static void SendMessage(object clientSocket)
{
Socket sendSocket = (Socket)clientSocket;
//利用新线程,通过sendSocket发送数据
for (int i = 0; i < 100; i++)
{
try
{
Thread.Sleep(1000);
string sendMessage = "client send Message Hellp" + DateTime.Now;
sendSocket.Send(Encoding.ASCII.GetBytes(sendMessage));
Console.WriteLine("向服务器发送消息:{0}", sendMessage);
}
catch (Exception ex)
{
sendSocket.Shutdown(SocketShutdown.Both);
sendSocket.Close();
//一旦出错,就结束循环
break;
}
}//for
}//SendMessage()
}//class
}
代码总结:
上面的代码没什么难点,就简单的说一下注意的地方:
(1)字符串和字符数组之间的转换方法:Ecoding.UTF8.Get或者Ecoding.ASCII.Get这两个方法,很简单。但是当要把结构体和字符数组转换就没那么简单了。
(2)客户端和服务器中启动了一些新的线程发送或者接收数据,在控制台,必须把线程设置为前台线程。不然Main函数一结束,就意味着主线程结束了,那么所有的后台线程就会随之死亡。
(3)客户端发送数据的线程,不要在主线程中,因为它没隔10s发送一次数据,有Thread.sleep()函数的调用,在Main线程中会阻塞主线程,要单独的开一个线程发送数据。
(4)在出现异常或者最后退出时,要关闭Socket的功能和关闭Socket的流。释放占用的计算机资源。
时间: 2024-11-05 19:25:20