我正在使用来自TcpClient
的TcpServer
和System.Net
进行简单的聊天应用程序。
我把所有东西都放在我的电脑上,服务器与客户端通信,反之亦然。但是,当我尝试使用另一台PC连接到同一台服务器应用程序时(即使在与我的PC相同的子网上),该东西也无法正常工作。
我尝试通过我的路由器,防火墙进行端口转发,但仍然没有。
Can you see me website说连接被拒绝了。虽然!!有时它表示连接完全超时。
我不确定我的代码或我的电脑有什么问题,我真的很感谢那些在这方面比我更有经验的人的帮助。
如果您需要客户端和服务器的代码,这里它们是:
附:我在底部的BeginConnect()
部分对客户端进行了更改,以便更改我正在连接的IP地址
客户:
using System;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
namespace TcpTest_Client_
{
public partial class Form1 : Form
{
TcpClient client;
IPAddress localIP = null;
bool connected = false;
public Form1()
{
InitializeComponent();
}
public void clientConnectCallback(IAsyncResult result)
{
try
{
client.EndConnect(result);
Log("Connected to " + client.Client.RemoteEndPoint);
connected = true;
NetworkStream clientStream = client.GetStream();
byte[] message = new byte[4096];
int bytesRead;
while (true)
{
bytesRead = 0;
try
{
//blocks until a client sends a message
bytesRead = clientStream.Read(message, 0, 4096);
}
catch (Exception ex)
{
//a socket error has occured
Log(ex.Message);
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
Log("Server on has disconnected");
break;
}
//message has successfully been received
UTF8Encoding encoder = new UTF8Encoding();
string bufferincmessage = encoder.GetString(message, 0, bytesRead);
Log("Server: " + bufferincmessage);
}
}
catch (Exception ex)
{
Log(ex.Message);
}
}
public void Log(string msg)
{
richTextBox1.BeginInvoke(new Action(
() =>
{
richTextBox1.Text += msg + "\n";
}));
}
private void Form1_Load(object sender, EventArgs e)
{
foreach (IPAddress addr in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
localIP = addr;
break;
}
}
client = new TcpClient(AddressFamily.InterNetwork);
}
private void button2_Click(object sender, EventArgs e)
{
try
{
client.BeginConnect(IPAddress.Parse("109.252.107.144"), 1234, clientConnectCallback, client);
}
catch (Exception ex)
{
Log(ex.Message);
}
}
private void button1_Click(object sender, EventArgs e)
{
if (connected)
{
UTF8Encoding encoder = new UTF8Encoding();
NetworkStream clientStream = client.GetStream();
byte[] stringToSend = new byte[richTextBox2.Text.Length];
stringToSend = encoder.GetBytes(richTextBox2.Text);
clientStream.Write(stringToSend, 0, stringToSend.Length);
}
}
}
}
服务器:
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace TcpTest
{
public partial class Form1 : Form
{
private TcpListener server;
private List<Thread> clientThreads = null;
public Thread MainThread;
public Form1()
{
InitializeComponent();
}
public void Log(string msg)
{
richTextBox1.BeginInvoke(new Action(
() =>
{
richTextBox1.Text += msg + "\n";
}));
}
public static string bufferincmessage;
public void AcceptSocketPackets(object client)
{
TcpClient tcpClient = (TcpClient)client;
NetworkStream clientStream = tcpClient.GetStream();
byte[] message = new byte[4096];
int bytesRead;
while (true)
{
bytesRead = 0;
try
{
//blocks until a client sends a message
bytesRead = clientStream.Read(message, 0, 4096);
}
catch (Exception ex)
{
//a socket error has occured
Log(ex.Message);
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
Log("Client on " + tcpClient.Client.RemoteEndPoint + " has disconnected from the server");
break;
}
//message has successfully been received
UTF8Encoding encoder = new UTF8Encoding();
bufferincmessage = encoder.GetString(message, 0, bytesRead);
Log("Client from " + tcpClient.Client.RemoteEndPoint + ": " + bufferincmessage);
string stringToSend = "You sent me: " + bufferincmessage;
byte[] messageToSend = new byte[stringToSend.Length];
messageToSend = encoder.GetBytes(stringToSend);
clientStream.Write(messageToSend, 0, messageToSend.Length);
}
}
public void SocketAcceptCallback(IAsyncResult result)
{
TcpClient newClient = server.EndAcceptTcpClient(result);
Log("Accepted client on " + newClient.Client.RemoteEndPoint);
clientThreads.Add(new Thread(new ParameterizedThreadStart(AcceptSocketPackets)));
clientThreads[clientThreads.Count - 1].Start(newClient);
server.BeginAcceptTcpClient(SocketAcceptCallback, server);
}
private void Form1_Load(object sender, EventArgs e)
{
MainThread = Thread.CurrentThread;
clientThreads = new List<Thread>();
try
{
IPAddress localIP = null;
foreach (IPAddress addr in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
localIP = addr;
break;
}
}
localIP = IPAddress.Any;
// could also use this:
// server = new TcpListener(new IPEndPoint(IPAddress.Any, 1234));
server = new TcpListener(new IPEndPoint(localIP, 1234));
Log("Starting server on " + localIP + ":1234");
server.Start(6);
server.BeginAcceptTcpClient(SocketAcceptCallback, server);
Log("Started server on " + localIP + ":1234");
}
catch (Exception ex)
{
Log(ex.Message);
}
}
}
}
C ++给我这样的问题。尝试创建另一个项目,粘贴服务器代码并将其构建为Release x86。如果您更改构建目标并且我们的问题是相同的,Windows防火墙即使在关闭时也不允许服务器或客户端运行而没有任何异常。如果它不起作用我可能不知道答案。