C# 三种方式实现Socket数据接收(经典)
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之前一般采用如下方式进行数据接收:
int recv;//定义接收数据长度变量
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text));//接收端所监听的接口,ip也可以用IPAddress.Any
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//初始化一个Socket对象
socket.Bind(ipEnd);//绑定套接字到一个IP地址和一个端口上(bind());
socket.Listen(10);
while (true)
{
byte[] data = new byte[1024];//对data清零
Socket clientSocket = socket.Accept(); //一旦接受连接,创建一个客户端
recv = clientSocket.Receive(data);
if (recv == 0) //如果收到的数据长度小于0,则退出
break;
string stringData = "0x" + BitConverter.ToString(data).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
richTextBox1.Text += DateTime.Now.ToString("yy-MM-dd hh:mm:ss") + stringData + "\n";
});
}
之前用的时候没发现什么问题,但是今天在测试金属门数据接收的时候发现会丢数据,金属门每隔十秒给我一次数据,用上面这个差不多60秒才能收到一组数据,针对以上问题,做了如下修改:
将数据接收放到 while (true),数据接收正常。
以下分别采用三种方式实现了数据的正常接收,代码如下:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace MetalGate
{
public partial class MainForm : Form
{
public MainForm()
{
InitializeComponent();
}
private BackgroundWorker demoBGWorker = new BackgroundWorker();
static TcpClient tcpClient;
static NetworkStream stream;
private void MainForm_Load(object sender, EventArgs e)
{
textBox1.Text = "192.168.1.99";
textBox2.Text = "8234";
}
//private void BGWorker_DoWork(object sender, DoWorkEventArgs e)
private void BGWorker_DoWork()
{
var serverIPEndPoint = new IPEndPoint(IPAddress.Parse("192.168.1.99"), 8234); // 当前服务器使用的ip和端口
TcpListener tcpListener = new TcpListener(serverIPEndPoint);
tcpListener.Start();
Console.WriteLine("服务端已启用......"); // 阻塞线程的执行,直到一个客户端连接
tcpClient = tcpListener.AcceptTcpClient();
Console.WriteLine("已连接.");
stream = tcpClient.GetStream(); // 创建用于发送和接受数据的NetworkStream
var t1 = new Thread(ReceiveMsg);
t1.IsBackground = true;
t1.Start();
}
private void BGWorker_DoWork1()
{
//在这里执行耗时的运算。
int recv;//定义接收数据长度变量
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text));//接收端所监听的接口,ip也可以用IPAddress.Any
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//初始化一个Socket对象
socket.Bind(ipEnd);//绑定套接字到一个IP地址和一个端口上(bind());
socket.Listen(10);
//创建监听线程
Thread thread = new Thread(Listen);
thread.IsBackground = true;
thread.Start(socket);
}
/// <summary>
/// 等待客户端的连接 并且创建与之通信的Socket
/// </summary>
Socket socketSend;
void Listen(object o)
{
try
{
Socket socketWatch = o as Socket;
while (true)
{
socketSend = socketWatch.Accept();//等待接收客户端连接
//开启一个新线程,执行接收消息方法
Thread r_thread = new Thread(Received);
r_thread.IsBackground = true;
r_thread.Start(socketSend);
}
}
catch { }
}
/// <summary>
/// 服务器端不停的接收客户端发来的消息
/// </summary>
/// <param name="o"></param>
void Received(object o)
{
try
{
Socket socketSend = o as Socket;
while (true)
{
//客户端连接服务器成功后,服务器接收客户端发送的消息
byte[] buffer = new byte[1024 * 1024 * 3];
//实际接收到的有效字节数
int len = socketSend.Receive(buffer);
if (len == 0)
{
break;
}
// string str = Encoding.UTF8.GetString(buffer, 0, len);
string stringData = "0x" + BitConverter.ToString(buffer, 0, len).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
richTextBox1.Text += DateTime.Now.ToString("yy-MM-dd hh:mm:ss -*- ") + stringData + "\n";
});
}
}
catch { }
}
private void BGWorker_DoWork2()
{
int recv;//定义接收数据长度变量
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text));//接收端所监听的接口,ip也可以用IPAddress.Any
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//初始化一个Socket对象
socket.Bind(ipEnd);//绑定套接字到一个IP地址和一个端口上(bind());
socket.Listen(10);
new Thread(delegate ()
{
Socket clientSocket = null;
while (true)
{
Stopwatch sw = new Stopwatch();
// 开始计时
sw.Start();
clientSocket = socket.Accept(); //一旦接受连接,创建一个客户端
Task.Run(() =>
{
while (true)
{
byte[] data = new byte[50];//对data清零
recv = clientSocket.Receive(data, 0, data.Length, SocketFlags.None);
//if (recv == 0) //如果收到的数据长度小于0,则退出
// break;
string stringData = "0x" + BitConverter.ToString(data, 0, recv).Replace("-", " 0x").ToLower();
this.Invoke((EventHandler)delegate
{
richTextBox1.Text += DateTime.Now.ToString("yy-MM-dd hh:mm:ss -*- ") + stringData + "\n";
});
//结束计时
sw.Stop();
long times = sw.ElapsedMilliseconds;
this.Invoke((EventHandler)delegate
{
richTextBox1.Text += "执行查询总共使用了" + times + "毫秒" + "\n";
});
}
});
}
})
{ IsBackground = true }.Start();
}
void ReceiveMsg()
{
byte[] buffer = new byte[1024]; // 预设最大接受1024个字节长度,可修改
int count = 0;
try
{
while ((count = stream.Read(buffer, 0, buffer.Length)) != 0)
{
string stringData = "0x" + BitConverter.ToString(buffer, 0, count).Replace("-", " 0x").ToLower();
Console.WriteLine($"{tcpClient.Client.LocalEndPoint.ToString()}:{DateTime.Now.ToString("yy-MM-dd hh:mm:ss -*- ") + stringData + "\n"}");
this.Invoke((EventHandler)delegate
{
richTextBox1.Text += DateTime.Now.ToString("yy-MM-dd hh:mm:ss -*- ") + stringData + "\n";
});
}
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
}
}
private void SendData(IPAddress remoteIP, int Port, byte[] bits)
{
//实例化socket
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipep = new IPEndPoint(remoteIP, Port);
socket.Connect(ipep);
//socket.Send(bits, 8, SocketFlags.None);
socket.Send(bits);
socket.Close();
}
private void btnListen_Click(object sender, EventArgs e)
{
//demoBGWorker.DoWork += BGWorker_DoWork;
//demoBGWorker.RunWorkerAsync();
//Task.Run(() =>
// {
BGWorker_DoWork2();
//});
}
private void btnSend_Click(object sender, EventArgs e)
{
byte[] order = new byte[8];
order = new byte[] { 0x80, 0x04, 0x00, 0x7F };
SendData(IPAddress.Parse("192.168.1.100"), int.Parse("49558"), order);
MessageBox.Show("指令发送成功");
}
}
}
测试:
Task.Run(() => {}); 这个可以去掉;
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