C#Socket通讯聊天完整代码
C#Socket通讯聊天完整代码
话不多说,直接上代码,可以用来做聊天通讯
打开Visual Studio,新建.NetFramework控制台应用程序,复制以下代码新建客户端服务端项目即可食用.
TCP通讯
TCP客户端
class Program
{
static Socket client;
static void Main(string[] args)
{
CreateClient();
new Thread(() =>
{
Thread.Sleep(500);
SendMessage();
}).Start();
new Thread(() =>
{
Thread.Sleep(500);
ReceiveMessage();
}).Start();
}
static void CreateClient()
{
try
{
IPAddress iPAdress = new IPAddress(new byte[] { 192, 168,6, 41 });
int port = 8000;
IPEndPoint iPEndPoint = new IPEndPoint(iPAdress, port);
client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
client.Connect(iPEndPoint);
Console.WriteLine("已经连接上服务器");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadKey();
Process.GetCurrentProcess().Close();
}
}
///发送消息
static void SendMessage()
{
try
{
while (true)
{
Console.WriteLine("等待发送信息，回车->发送，close->断开连接");
string s = Console.ReadLine();
client.Send(Encoding.Default.GetBytes(s));
Console.WriteLine("发送成功！\n");
if (s == "close")
{
client.Close();
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
///接收消息
static void ReceiveMessage()
{
try
{
while (true)
{
byte[] buffer = new byte[1024 * 1024 * 8];
int length = client.Receive(buffer);
string msg = Encoding.Default.GetString(buffer, 0, length);
if (buffer.Length > 0)
{
Console.WriteLine("服务器:" + msg);
}
else
{
Console.WriteLine("断开连接");
break;
}
Thread.Sleep(100);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
}
TCP服务端
class Program
{
static Socket server;
static Socket client;
static readonly Dictionary<string, Socket> clients = new Dictionary<string, Socket>();
static void Main()
{
CreateServer();
new Thread(() =>
{
try
{
Accept(server);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}).Start();
new Thread(() =>
{
Thread.Sleep(500);
SendMessage();
}).Start();
}
static void SendMessage()
{
try
{
while (true)
{
Console.WriteLine("等待发送信息，回车->发送，close->断开连接");
string s = Console.ReadLine();
foreach (Socket client in clients.Values)
{
client.Send(Encoding.Default.GetBytes(s));
}
Console.WriteLine("发送成功！\n");
if (s == "close")
{
client.Close();
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
static void CreateServer()
{
server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress iPAddress = new IPAddress(new byte[] { 192, 168, 6, 41 });
int port = 8000;
EndPoint endPoint = new IPEndPoint(iPAddress, port);
server.Bind(endPoint);
server.Listen(8);
Console.WriteLine("tcp端口已经打开,192.168.6.41:8000");
DisplayAllClients();
}
static void Accept(Object obj)
{
Socket socket = (Socket)obj;
while (true)
{
client = socket.Accept();
string ip = client.RemoteEndPoint.ToString();
if (!clients.ContainsKey(ip))
{
clients.Add(ip, client);
Console.WriteLine(ip + "已连接");
DisplayAllClients();
}
new Thread(() =>
{
try
{
Recieve(client);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
clients.Remove(ip);
}
})
{ IsBackground = true }.Start();
}
}
static void Recieve(Object obj)
{
Socket client = (Socket)obj;
while (true)
{
try
{
byte[] buffer = new byte[1024 * 1024 * 8];
int length = client.Receive(buffer);
string message = Encoding.Default.GetString(buffer, 0, length);
Console.WriteLine(client.RemoteEndPoint.ToString() + ":" + message);
if (message == null || message.Length == 0 || message == "close")
{
string ip = client.RemoteEndPoint.ToString();
Console.WriteLine(ip + "连接断开！");
clients.Remove(ip);
DisplayAllClients();
break;
}
else
{
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
clients.Remove(client.RemoteEndPoint.ToString());
DisplayAllClients();
break;
}
}
}
///显示所有连接客户端
static void DisplayAllClients()
{
if (clients.Values.Count == 0)
{
Console.WriteLine("目前无连接");
Console.WriteLine("等待新的连接");
}
else
{
Console.WriteLine("目前所有连接");
Console.WriteLine("+==========+");
foreach (Socket client in clients.Values)
{
Console.WriteLine(client.RemoteEndPoint.ToString());
}
Console.WriteLine("+==========+");
Console.WriteLine();
}
}
}
注意测试IP地址端口号改成自己的IP,对应监听连接的端口号.
UDP通讯
1. UDP不属于面向连接的通信，在选择协议时，选择UDP必须要谨慎。在网络质量较差情况下，UDP协议数据包丢失会比较严重。但是由于UDP的特性：它不属于连接型协议，具有资源消耗小，处理速度快等优点，所以通常音视频和普通数据在传送时使用UDP较多，因为它们即使偶尔丢失一两个数据包，也不会对接收结果产生太大影响。
2.通过UDP进行信息收发，并没有严格的客户端和服务端之分，它不同于 TCP，TCP必须建立可靠连接之后才可以通信，而UDP随时都可以给指定的ip和端口所对应进程发送消息。
3.UDP发送消息时需要绑定自己IP 和 端口号，接收消息的时候没有特殊限制，只要有人给自己发送，自己在线，就可以接收。
4.总之，使用UDP协议进行信息的传输之前不需要建立连接。换句话说就是客户端向服务器发送信息，客户端只需要给出服务器的ip地址和端口号，然后将信息封装到一个待发送的报文中并且发送出去。至于服务器端是否存在，或者能否收到该报文，客户端根本不用管。
UDP客户端
internal class Program
{
static Socket client;
static void Main(string[] args)
{
client = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
client.Bind(new IPEndPoint(IPAddress.Parse("192.168.6.41"), 8000));//绑定端口号和IP
Thread threadReceiveMsg = new Thread(ReceiveMsg); //开启接收消息线程
threadReceiveMsg.Start();
Thread threadSendMsg = new Thread(sendMsg);//开启发送消息线程
threadSendMsg.Start();
Console.WriteLine("客户端已开启");
}
/// <summary>
/// 向指定IP的主机端口发送数据报
/// </summary>
static void sendMsg()
{
EndPoint point = new IPEndPoint(IPAddress.Parse("192.168.6.41"), 8001);
while (true)
{
string msg = Console.ReadLine();
client.SendTo(Encoding.UTF8.GetBytes(msg), point);
}
}
/// <summary>
/// 接收发送给本机IP对应端口号的数据报
/// </summary>
static void ReceiveMsg()
{
while (true)
{
EndPoint point = new IPEndPoint(IPAddress.Any, 0);//用来保存发送方的IP和端口号
byte[] buffer = new byte[1024];
int length = client.ReceiveFrom(buffer, ref point);//接收数据报
string message = Encoding.UTF8.GetString(buffer, 0, length);
Console.WriteLine(DateTime.Now.ToString() + "Msg From:" + point.ToString() + ":" + message);
}
}
}
UDP服务端
internal class Program
{
static Socket server;
static void Main(string[] args)
{
server = new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);
server.Bind(new IPEndPoint(IPAddress.Parse("192.168.6.41"),8001));//绑定端口号和IP
Thread threadReceiveMsg=new Thread(ReceiveMsg); //开启接收消息线程
threadReceiveMsg.Start();
Thread threadSendMsg = new Thread(sendMsg);//开启发送消息线程
threadSendMsg.Start();
Console.WriteLine("服务端已开启");
}
/// <summary>
/// 向指定IP的主机端口发送数据报
/// </summary>
static void sendMsg() {
EndPoint point = new IPEndPoint(IPAddress.Parse("192.168.6.41"),8000);
while (true)
{
string msg = Console.ReadLine();
server.SendTo(Encoding.UTF8.GetBytes(msg),point);
}
}
/// <summary>
/// 接收发送给本机IP对应端口号的数据报
/// </summary>
static void ReceiveMsg() {
while (true)
{
EndPoint point = new IPEndPoint(IPAddress.Any,0);//用来保存发送方的IP和端口号
byte[] buffer=new byte[1024];
int length = server.ReceiveFrom(buffer,ref point);//接收数据报
string message=Encoding.UTF8.GetString(buffer,0,length);
Console.WriteLine(DateTime.Now.ToString()+"Msg From:"+point.ToString()+":"+message);
}
}
}