C# C语言中的聊天程序错误
为什么这个代码不起作用?我是C语言新手,这是从一个教程中获得的。代码中没有错误,但在调试模式下崩溃。谢谢C# C语言中的聊天程序错误,c#,chat,debug-mode,C#,Chat,Debug Mode,为什么这个代码不起作用?我是C语言新手,这是从一个教程中获得的。代码中没有错误,但在调试模式下崩溃。谢谢 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using Syste
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
namespace Chat1
{
public partial class Form1 : Form
{
Socket sck;
EndPoint epLocal, epRemote;
byte[] buffer;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//Set up socket
sck = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
sck.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
//Get User IP
textLocalIp.Text = GetLocalIp();
textRemoteIp.Text = GetLocalIp();
}
private string GetLocalIp()
{
IPHostEntry host;
host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
return ip.ToString();
}
return "127.0.0.1";
}
private void buttonConnect_Click(object sender, EventArgs e)
{
// Binding Socket
epLocal = new IPEndPoint(IPAddress.Parse(textLocalIp.Text), Convert.ToInt32(textLocalPort.Text));
sck.Bind(epLocal);
// Connect to Remote IP
epRemote = new IPEndPoint(IPAddress.Parse(textRemoteIp.Text), Convert.ToInt32(textRemotePort.Text));
sck.Bind(epRemote); // This is were it directs me when crashing
//Specific Port
buffer = new byte[1500];
sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);
}
private void MessageCallBack(IAsyncResult aResult)
{
try
{
byte[] recieveData = new byte[1500];
recieveData = (byte[])aResult.AsyncState;
//Convert Byte To String
ASCIIEncoding aEncoding = new ASCIIEncoding();
string receivedMessage = aEncoding.GetString(recieveData);
//Adding this item into Textbox
listMessage.Items.Add("Partner: " + receivedMessage);
buffer = new byte[1500];
sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void buttonSend_Click(object sender, EventArgs e)
{
// Convert String to Byte
ASCIIEncoding aEncoding = new ASCIIEncoding();
byte[] sendingMessage = new byte[1500];
sendingMessage = aEncoding.GetBytes(textMessage.Text);
// Sending the Enconded message
sck.Send(sendingMessage);
//Add to the Listbox
listMessage.Items.Add("Me: " + textMessage.Text);
textMessage.Text = "";
}
}
}您将同一套接字绑定到多个端点,首先是epLocal,然后是epRemote。您需要为eRemote制作一个新的套接字
例如:
在类的顶部声明两个套接字:
Socket remoteSocket;
Socket localSocket;
在Form1\u Load中初始化它们:
然后在“按钮连接”中单击,将它们绑定到单独的IPEndPoints:
由于看起来您正在尝试从远程IPEndPoint读取,因此需要如下操作:
buffer = new byte[1500];
remoteSocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);
您遇到了什么错误?一个消息框显示您的应用程序中发生了未处理的异常。等并且提供了无效参数消息框指向哪一行?发布完整的错误消息。System.dll中发生了类型为“System.Net.Sockets.SocketException”的未经处理的异常。其他信息:提供了无效参数。我认为这不符合回答条件。@Serv为什么它不是回答?我至少会发布修改代码,并用一两句话说明为什么这些修改是必要的。就目前而言,这只是一个注释。正如Serv所说,我需要更改代码,我尝试使用我所掌握的一点知识来更改代码,但没有成功。很多代码。我现在得走了,如果有人觉得需要更多,请随意编辑。
epLocal = new IPEndPoint(IPAddress.Parse(textLocalIp.Text), Convert.ToInt32(textLocalPort.Text));
localSocket.Bind(epLocal);
epRemote = new IPEndPoint(IPAddress.Parse(textRemoteIp.Text), Convert.ToInt32(textRemotePort.Text));
remoteSocket.Bind(epRemote);
buffer = new byte[1500];
remoteSocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);