C#-TCP协议通讯（一）-TCPClientHelper_Net5
1.C#-Socket_TCP、Socket_UDP、WebSocket、WebService、WCF、WebAPI、MQTT的基础使用
2.C#-TCP协议通讯（一）-TCPClientHelper_Net5
3.C#-TCP协议通讯（二）-处理TCP粘包与拆包4.C#-UDP协议通讯（一）-UDPClientHelper_Net55.C#-UDP协议通讯（二）-优化丢包问题6.C#-Http协议通讯（一）-目录7.C#-Http协议通讯（三）-HttpWebRequest8.C#-Http协议通讯（五）-HttpClient9.C#-WebService协议通讯_Net510.C#-WCF协议通讯_Net511.C#-WebSocket协议通讯_Net512.MQTT学习笔记（C#）-MQTTnet13.C#-网络通讯框架（一）-HPSocket14.C#-网络通讯框架（二）-DotNetty_Net715.C#-网络通讯框架（三）-SignalR（SignalRCore版）_Net7
代码地址：https://gitee.com/qq28069933146_admin/csharp_networkprotocol_research
视频演示：C#-TCP与UDP通讯示例演示
一、TCPClinet知识点
1、创建TCPClient客户端发送消息示例：
/// <summary>
/// 发送消息-未做粘包和拆包处理
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <param name="msg">数据流</param>
/// <returns></returns>
public ResultData_TCP ConnectAndSendMsg_Nohandle(string hostname, int port, string msg)
{
ResultData_TCP resultData_TCP = new ResultData_TCP();
try
{
_tcpClient = new TcpClient(hostname, port);
byte[] data = System.Text.Encoding.ASCII.GetBytes(msg);
NetworkStream stream = _tcpClient.GetStream(); // 获取当前数据流
stream.Write(data, 0, data.Length); // 写入
stream.Flush();
stream.Close(); // 关闭流
resultData_TCP = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "发送成功！"
};
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("参数无效；错误内容: ", e.HResult, "，", e.Message)
};
} // 参数无效（当将 null 引用传递到不接受其作为有效参数的方法时引发的异常。）
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("网络异常，套接字错误；错误内容: ", e.HResult, "，", e.Message)
};
} // 套接字错误（发生套接字错误时引发的异常。）
catch (Exception ex)
{
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("发生错误；错误内容: ", ex.HResult, "，", ex.Message),
};
} // 其他错误信息
return resultData_TCP;
}2、创建TcpListener监听TCPClient（线程-Net Framework）：
/// <summary>
/// 开启/关闭监听-控制线程
/// </summary>
private void btnOpenCloseThread_Click(object sender, EventArgs e)
{
try
{
if (btnOpenCloseThread.Text == "开启监听-控制线程") // 开启监听
{
// 检查地址
if (!CheckServerUrl())
{
return;
}
IPHostEntry ipInfo = Dns.Resolve("127.0.0.1"); // 主机信息
IPAddress[] ipList = ipInfo.AddressList; // IP数组
IPAddress localAddr = ipList[0]; // IP
int port = int.Parse(txtPort.Text);
_listenter = _TCPHelper.TcpListener_Start(localAddr, port);
_listenter.Start(); // 开始监听
thListener = new Thread(new ThreadStart(Run)); //定义线程进行监听
thListener.IsBackground = true;
thListener.Start(); //线程启动
btnOpenCloseThread.Text = "关闭监听-控制线程";
btnOpenCloseThread.BackColor = Color.FromArgb(128, 255, 128);
}
else // 关闭监听
{
if (thListener != null)
{
//thListener.Interrupt();
_listenter.Stop();
}
btnOpenCloseThread.Text = "开启监听-控制线程";
btnOpenCloseThread.BackColor = Color.FromArgb(255, 128, 128);
}
}
catch (Exception ex)
{
btnOpenCloseThread.Text = "开启监听-控制线程";
btnOpenCloseThread.BackColor = Color.FromArgb(255, 128, 128);
ShowLog($"开启/关闭监听失败，错误信息: {ex.Message}");
}
}
/// <summary>
/// 监听-线程方法
/// </summary>
private void Run()
{
while (true)
{
try
{
using TcpClient client = _listenter.AcceptTcpClient(); // 接受一个Client
NetworkStream stream = client.GetStream(); // 获取网络流
// 接收信息
byte[] buffer = new byte[client.ReceiveBufferSize]; // 存储接收到的流
stream.Read(buffer, 0, buffer.Length); // 读取网络流中的数据
string dataStr = System.Text.Encoding.ASCII.GetString(buffer, 0, buffer.Length);
Console.WriteLine("Received: {0}", dataStr);
// 发回回复
byte[] msg = System.Text.Encoding.ASCII.GetBytes(dataStr);
stream.Write(msg, 0, msg.Length);
string msgStr = System.Text.Encoding.ASCII.GetString(msg, 0, msg.Length);
Console.WriteLine("Sent: {0}", msgStr);
stream.Close(); // 关闭流
client.Close(); // 关闭Client
if (string.IsNullOrEmpty(dataStr)) // 展示
{
this.Invoke(new Action(() =>
{
txtInfo.Text += string.Concat("\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"), "->", "线程监听_接收到内容，内容为：", dataStr);
}));
}
}
catch (Exception ex)
{
this.Invoke(new Action(() =>
{
txtInfo.Text += string.Concat("\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"), "->", "线程监听出错，错误信息：", ex.Message);
}));
}
Thread.Sleep(500);
}
}3、创建TcpListener监听TCPClient（线程+委托方法-Net 5）：
/// <summary>
/// 创建并开启TCP侦听
/// </summary>
/// <param name="localAddr">地址</param>
/// <param name="port">端口</param>
/// <param name="callback">委托方法</param>
/// <returns></returns>
public void TcpListener_Start(IPAddress localAddr, int port, Action<ResultData_TCP>? callback)
{
try
{
if (localAddr != null)
{
_server = new TcpListener(localAddr, port);
}
else
{
_server = new TcpListener(port);
}
_server.Start();
cts = new CancellationTokenSource();
Task.Run(() => ThreadCode(cts.Token, callback));
}
catch (SocketException e)
{
Console.WriteLine("Socket异常，错误信息: {0}", e.HResult + "_" + e.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("SocketException：", e.HResult, "，", e.Message)
};
callback?.Invoke(state);
}
catch (Exception ex)
{
Console.WriteLine("接收出错，错误信息: {0}", ex.HResult + "_" + ex.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("出错，错误内容: ", ex.HResult, "，", ex.Message)
};
callback?.Invoke(state);
}
finally
{
}
}
/// <summary>
/// 监听
/// </summary>
/// <param name="token">线程取消的标识</param>
/// <param name="callback">委托</param>
private void ThreadCode(CancellationToken token, Action<ResultData_TCP>? callback)
{
while (!token.IsCancellationRequested)
{
try
{
TcpClient client = _server.AcceptTcpClient(); // 接受一个Client
NetworkStream stream = client.GetStream(); // 获取网络流
// 接收信息
byte[] buffer = new byte[client.ReceiveBufferSize]; // 存储接收到的流
stream.Read(buffer, 0, buffer.Length); // 读取网络流中的数据
string dataStr = System.Text.Encoding.ASCII.GetString(buffer, 0, buffer.Length);
Console.WriteLine("Received: {0}", dataStr);
// 发回回复
byte[] msg = System.Text.Encoding.ASCII.GetBytes(dataStr);
stream.Write(msg, 0, msg.Length);
string msgStr = System.Text.Encoding.ASCII.GetString(msg, 0, msg.Length);
Console.WriteLine("Sent: {0}", msgStr);
stream.Close(); // 关闭流
client.Close(); // 关闭Client
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "接收成功！",
ResultObject1 = dataStr, // 接收的信息
ResultObject2 = msgStr // 回复的信息
};
callback?.Invoke(state);
}
catch (SocketException e)
{
Console.WriteLine("Socket异常，错误信息: {0}", e.HResult + "_" + e.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("SocketException：", e.HResult, "，", e.Message)
};
callback?.Invoke(state);
}
catch (Exception ex)
{
Console.WriteLine("接收出错，错误信息: {0}", ex.HResult + "_" + ex.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("出错，错误内容: ", ex.HResult, "，", ex.Message)
};
callback?.Invoke(state);
}
}
_server.Stop(); // 关闭
}
/// <summary>
/// TCP监听停止
/// </summary>
public void TcpListener_Stop()
{
cts.Cancel();
}二、TCPHelper
/**
*┌──────────────────────────────────────────────────────────────┐
*│ 描 述：TCP通讯相关的工具类
*│ 作 者：执笔小白
*│ 版 本：1.1
*│ 创建时间：2023-3-18 10:40:56
*└──────────────────────────────────────────────────────────────┘
*┌──────────────────────────────────────────────────────────────┐
*│ 命名空间: ZhibiXiaobai
*│ 类 名：TCPHelper
*└──────────────────────────────────────────────────────────────┘
*/
using System;
using System.Data;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ZhibiXiaobai
{
/// <summary>
/// TCP通信帮助类
/// System.Net.Sockets类库
/// TcpListener与TcpClient
/// </summary>
public class TCPHelper
{
#region 接收端（侦听端）
/// <summary>
/// 侦听来自 TCP 网络客户端的连接
/// </summary>
TcpListener _server = null;
/// <summary>
/// 取消线程的标识
/// </summary>
private CancellationTokenSource cts;
#region 属性
/// <summary>
/// 获取或设置一个 Boolean 值，该值指定 TcpListener 是否只允许一个基础套接字来侦听特定端口。
/// </summary>
public bool TcpListener_ExclusiveAddressUse => _server.ExclusiveAddressUse;
/// <summary>
/// 获取当前 EndPoint 的基础 TcpListener
/// </summary>
public EndPoint TcpListener_LocalEndpoint => _server.LocalEndpoint;
/// <summary>
/// 获取基础网络 Socket
/// </summary>
public Socket TcpListener_Server => _server.Server;
#endregion 属性
/// <summary>
/// 创建侦听
/// </summary>
/// <param name="localAddr">地址</param>
/// <param name="port">端口</param>
/// <returns></returns>
public TcpListener TcpListener_Start(IPAddress localAddr, int port)
{
_server = new TcpListener(localAddr, port);
return _server;
}
/// <summary>
/// 创建并开启TCP侦听
/// </summary>
/// <param name="localAddr">地址</param>
/// <param name="port">端口</param>
/// <param name="callback">委托方法</param>
/// <returns></returns>
public void TcpListener_Start(IPAddress localAddr, int port, Action<ResultData_TCP>? callback)
{
try
{
if (localAddr != null)
{
_server = new TcpListener(localAddr, port);
}
else
{
_server = new TcpListener(port);
}
_server.Start();
cts = new CancellationTokenSource();
Task.Run(() => ThreadCode(cts.Token, callback));
}
catch (SocketException e)
{
Console.WriteLine("Socket异常，错误信息: {0}", e.HResult + "_" + e.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("SocketException：", e.HResult, "，", e.Message)
};
callback?.Invoke(state);
}
catch (Exception ex)
{
Console.WriteLine("接收出错，错误信息: {0}", ex.HResult + "_" + ex.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("出错，错误内容: ", ex.HResult, "，", ex.Message)
};
callback?.Invoke(state);
}
finally
{
}
}
/// <summary>
/// 监听
/// </summary>
/// <param name="token">线程取消的标识</param>
/// <param name="callback">委托</param>
private void ThreadCode(CancellationToken token, Action<ResultData_TCP>? callback)
{
while (!token.IsCancellationRequested)
{
try
{
TcpClient client = _server.AcceptTcpClient(); // 接受一个Client
NetworkStream stream = client.GetStream(); // 获取网络流
// 接收信息
byte[] buffer = new byte[client.ReceiveBufferSize]; // 存储接收到的流
stream.Read(buffer, 0, buffer.Length); // 读取网络流中的数据
string dataStr = System.Text.Encoding.ASCII.GetString(buffer, 0, buffer.Length);
Console.WriteLine("Received: {0}", dataStr);
// 发回回复
byte[] msg = System.Text.Encoding.ASCII.GetBytes(dataStr);
stream.Write(msg, 0, msg.Length);
string msgStr = System.Text.Encoding.ASCII.GetString(msg, 0, msg.Length);
Console.WriteLine("Sent: {0}", msgStr);
stream.Close(); // 关闭流
client.Close(); // 关闭Client
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "接收成功！",
ResultObject1 = dataStr, // 接收的信息
ResultObject2 = msgStr // 回复的信息
};
callback?.Invoke(state);
}
catch (SocketException e)
{
Console.WriteLine("Socket异常，错误信息: {0}", e.HResult + "_" + e.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("SocketException：", e.HResult, "，", e.Message)
};
callback?.Invoke(state);
}
catch (Exception ex)
{
Console.WriteLine("接收出错，错误信息: {0}", ex.HResult + "_" + ex.Message);
ResultData_TCP state = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("出错，错误内容: ", ex.HResult, "，", ex.Message)
};
callback?.Invoke(state);
}
}
_server.Stop(); // 关闭
}
/// <summary>
/// TCP监听停止
/// </summary>
public void TcpListener_Stop()
{
cts.Cancel();
}
/// <summary>
/// 确定是否有挂起的连接请求
/// </summary>
/// <returns></returns>
public bool TcpListener_Pending() => _server.Pending();
/// <summary>
/// 启用或禁用针对 TcpListener 实例的网络地址转换(NAT) 遍历。
/// </summary>
/// <param name="allowed">启用或禁用</param>
public void TcpListener_AllowNatTraversal(bool allowed) => _server.AllowNatTraversal(allowed);
/// <summary>
/// 接受挂起的连接请求
/// </summary>
/// <returns></returns>
public Socket TcpListener_AcceptSocket() => _server.AcceptSocket();
/// <summary>
/// 接受挂起的连接请求以作为异步操作。
/// </summary>
/// <returns></returns>
public Task<Socket> TcpListener_AcceptSocketAsync() => _server.AcceptSocketAsync();
/// <summary>
/// 接受挂起的连接请求。
/// </summary>
/// <returns></returns>
public TcpClient TcpListener_AcceptTcpClient() => _server.AcceptTcpClient();
/// <summary>
/// 接受挂起的连接请求以作为异步操作。
/// </summary>
/// <returns></returns>
public Task<TcpClient> TcpListener_AcceptTcpClientAsync() => _server.AcceptTcpClientAsync();
/// <summary>
/// 开始一个异步操作来接受一个传入的连接尝试。
/// </summary>
/// <returns></returns>
public IAsyncResult TcpListener_BeginAcceptSocket(AsyncCallback? callback, object? state) => _server.BeginAcceptSocket(callback, state);
/// <summary>
/// 异步接受传入的连接尝试，并创建新的 Socket 来处理远程主机通信。
/// </summary>
/// <param name="asyncResult"></param>
/// <returns></returns>
public Socket TcpListener_EndAcceptSocket(IAsyncResult asyncResult) => _server.EndAcceptSocket(asyncResult);
/// <summary>
/// 开始一个异步操作来接受一个传入的连接尝试。
/// </summary>
/// <param name="callback"></param>
/// <param name="state"></param>
/// <returns></returns>
public IAsyncResult TcpListener_BeginAcceptTcpClient(AsyncCallback? callback, object? state) => _server.BeginAcceptTcpClient(callback, state);
/// <summary>
/// 异步接受传入的连接尝试，并创建新的 TcpClient 来处理远程主机通信。
/// </summary>
/// <param name="asyncResult"></param>
/// <returns></returns>
public TcpClient TcpListener_EndAcceptTcpClient(IAsyncResult asyncResult) => _server.EndAcceptTcpClient(asyncResult);
#endregion 接收端（侦听端）
#region 发送端（客户端）
/// <summary>
/// 为 TCP 网络服务提供客户端连接
/// </summary>
TcpClient _tcpClient = new TcpClient();
#region 属性
/// <summary>
/// 是否已建立连接
/// </summary>
public bool TcpClient_Connected => _tcpClient.Connected;
/// <summary>
/// 获取已经从网络接收且可供读取的数据量
/// </summary>
public int TcpClient_Available => _tcpClient.Available;
/// <summary>
/// 获取当前连接用对象
/// </summary>
/// <returns></returns>
public Socket TcpClient_Client() => _tcpClient.Client;
/// <summary>
/// 指定 TcpClient 是否只允许一个客户端使用端口
/// </summary>
public bool TcpClient_ExclusiveAddressUse => _tcpClient.ExclusiveAddressUse;
/// <summary>
/// 获取或设置有关关联的套接字的延迟状态的信息。
/// </summary>
public LingerOption? TcpClient_LingerState => _tcpClient.LingerState;
/// <summary>
/// 获取或设置一个值，该值在发送或接收缓冲区未满时禁用延迟。
/// </summary>
public bool TcpClient_NoDelay => _tcpClient.NoDelay;
/// <summary>
/// 获取或设置接收缓冲区的大小。
/// </summary>
public int TcpClient_ReceiveBufferSize => _tcpClient.ReceiveBufferSize;
/// <summary>
/// 获取或设置在初始化一个读取操作以后 TcpClient 等待接收数据的时间量。
/// </summary>
public int TcpClient_ReceiveTimeout => _tcpClient.ReceiveTimeout;
/// <summary>
/// 获取或设置发送缓冲区的大小。
/// </summary>
public int TcpClient_SendBufferSize => _tcpClient.SendBufferSize;
/// <summary>
/// 获取或设置 TcpClient 等待发送操作成功完成的时间量。
/// </summary>
public int TcpClient_SendTimeout => _tcpClient.SendTimeout;
#endregion 属性
/// <summary>
/// 连接
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <returns></returns>
public bool TcpClient_Connect(string hostname, int port)
{
_tcpClient = new TcpClient(hostname, port);
return _tcpClient.Connected;
}
/// <summary>
/// 连接
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <returns></returns>
public TcpClient TcpClient_Connect2(string hostname, int port)
{
return new TcpClient(hostname, port);
}
/// <summary>
/// 连接_异步
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <returns></returns>
public Task TcpClient_ConnectAsync(string hostname, int port) => _tcpClient.ConnectAsync(hostname, port);
/// <summary>
/// 连接_异步 令牌
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <param name="cancellationToken">令牌</param>
/// <returns></returns>
public ValueTask TcpClient_ConnectAsync(string hostname, int port, CancellationToken cancellationToken) => _tcpClient.ConnectAsync(hostname, port, cancellationToken);
/// <summary>
/// 关闭连接
/// </summary>
public void TcpClient_Close() => _tcpClient.Close();
/// <summary>
/// 开始一个对远程主机连接_异步
/// </summary>
/// <param name="host">IP</param>
/// <param name="port">端口</param>
/// <param name="requestCallback">回调方法</param>
/// <param name="state">当操作完成时，传递给 requestCallback 委托的对象</param>
/// <returns></returns>
public IAsyncResult TcpClient_BeginConnect(string host, int port, AsyncCallback? requestCallback, object? state) => _tcpClient.BeginConnect(host, port, requestCallback, state);
/// <summary>
/// 结束异步连接
/// </summary>
/// <param name="asyncResult"></param>
public void TcpClient_EndConnect(IAsyncResult asyncResult) => _tcpClient.EndConnect(asyncResult);
/// <summary>
/// 返回用于向远程主机读写数据的流。
/// </summary>
/// <returns></returns>
public NetworkStream TcpClient_GetStream() => _tcpClient.GetStream();
#region 接收与发送消息-未做粘包和拆包处理
/// <summary>
/// 发送消息-未做粘包和拆包处理（一般不用）
/// </summary>
/// <param name="msg">数据流</param>
/// <returns></returns>
public ResultData_TCP SendMsg_Nohandle(string msg)
{
ResultData_TCP resultData_TCP = new ResultData_TCP();
try
{
byte[] data = System.Text.Encoding.ASCII.GetBytes(msg);
NetworkStream stream = _tcpClient.GetStream(); // 获取当前数据流
stream.Write(data, 0, data.Length); // 写入
stream.Flush();
stream.Close(); // 关闭流
resultData_TCP = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "发送成功！"
};
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("参数无效；错误内容: ", e.HResult, "，", e.Message)
};
} // 参数无效（当将 null 引用传递到不接受其作为有效参数的方法时引发的异常。）
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("网络异常，套接字错误；错误内容: ", e.HResult, "，", e.Message)
};
} // 套接字错误（发生套接字错误时引发的异常。）
catch (Exception ex)
{
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("发生错误；错误内容: ", ex.HResult, "，", ex.Message),
};
} // 其他错误信息
return resultData_TCP;
}
/// <summary>
/// 接收一次消息-未做粘包和拆包处理
/// 注：该方法不会使用；一般TCP消息使用TcpListener做接收。
/// </summary>
/// <returns></returns>
public ResultData_TCP ReceiveMsg1_Nohandle()
{
ResultData_TCP resultData_TCP = new ResultData_TCP();
try
{
byte[] data = new byte[1024]; // 接收的缓存
string responseData = string.Empty; // 接收用对象
NetworkStream stream = _tcpClient.GetStream(); // 获取流
int bytes = stream.Read(data, 0, data.Length); // 读取
responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
stream.Flush();
stream.Close(); // 关闭流
resultData_TCP = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "接收成功！",
ResultObject1 = responseData
};
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("参数无效；错误内容: ", e.HResult, "，", e.Message)
};
} // 参数无效（当将 null 引用传递到不接受其作为有效参数的方法时引发的异常。）
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("网络异常，套接字错误；错误内容: ", e.HResult, "，", e.Message)
};
} // 套接字错误（发生套接字错误时引发的异常。）
catch (Exception ex)
{
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("发生错误；错误内容: ", ex.HResult, "，", ex.Message),
};
} // 其他错误信息
return resultData_TCP;
}
/// <summary>
/// 发送消息-未做粘包和拆包处理
/// </summary>
/// <param name="hostname">Ip</param>
/// <param name="port">端口</param>
/// <param name="msg">数据流</param>
/// <returns></returns>
public ResultData_TCP ConnectAndSendMsg_Nohandle(string hostname, int port, string msg)
{
ResultData_TCP resultData_TCP = new ResultData_TCP();
try
{
_tcpClient = new TcpClient(hostname, port);
byte[] data = System.Text.Encoding.ASCII.GetBytes(msg);
NetworkStream stream = _tcpClient.GetStream(); // 获取当前数据流
stream.Write(data, 0, data.Length); // 写入
stream.Flush();
stream.Close(); // 关闭流
resultData_TCP = new ResultData_TCP()
{
ResultCode = 1,
ResultMsg = "发送成功！"
};
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("参数无效；错误内容: ", e.HResult, "，", e.Message)
};
} // 参数无效（当将 null 引用传递到不接受其作为有效参数的方法时引发的异常。）
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("网络异常，套接字错误；错误内容: ", e.HResult, "，", e.Message)
};
} // 套接字错误（发生套接字错误时引发的异常。）
catch (Exception ex)
{
resultData_TCP = new ResultData_TCP()
{
ResultCode = -1,
ResultMsg = string.Concat("发生错误；错误内容: ", ex.HResult, "，", ex.Message),
};
} // 其他错误信息
return resultData_TCP;
}
#endregion 接收与发送消息-未做粘包和拆包处理
#endregion 发送端（客户端）
}
/// <summary>
/// 信息载体
/// </summary>
public class ResultData_TCP
{
/// <summary>
/// 结果Code
/// 正常1，其他为异常；0不作为回复结果
/// </summary>
public int ResultCode { get; set; } = 0;
/// <summary>
/// 结果信息
/// </summary>
public string ResultMsg { get; set; } = string.Empty;
/// <summary>
/// 扩展1
/// </summary>
public object? ResultObject1 { get; set; } = string.Empty;
/// <summary>
/// 扩展2
/// </summary>
public object? ResultObject2 { get; set; } = string.Empty;
}
}本文来自博客园，作者：꧁执笔小白꧂，转载请注明原文链接：https://www.cnblogs.com/qq2806933146xiaobai/p/17224366.html
合集:
C#-网络通信
分类:
C#+通讯_网络通信
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