login

Chat/Client/Client.csproj

@@ -8,4 +8,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\Core\Core.csproj" />
+  </ItemGroup>
+
 </Project>

Chat/Client/LoginForm.Designer.cs

@@ -49,7 +49,7 @@
 			this.tbxId.Location = new System.Drawing.Point(79, 12);
 			this.tbxId.Name = "tbxId";
 			this.tbxId.Size = new System.Drawing.Size(181, 23);
-			this.tbxId.TabIndex = 1;
+			this.tbxId.TabIndex = 0;
 			// 
 			// label2
 			// 

Chat/Client/LoginForm.cs

@@ -1,3 +1,6 @@
+using Core;
+using System.Net.Sockets;
+
 namespace Client
 {
 	public partial class LoginForm : Form
@@ -5,21 +8,55 @@ namespace Client
 		public LoginForm()
 		{
 			InitializeComponent();
+			InitInstance();
 		}
 
-		private void btnLogin_Click(object sender, EventArgs e)
+		private void InitInstance()
 		{
-			if (string.IsNullOrEmpty(tbxId.Text) || string.IsNullOrEmpty(tbxNickname.Text))
+			Singleton.Instance.LoginResponsed += LoginResponsed;
+			FormClosing += LoginForm_FormClosing;
+		}
+
+		private void LoginForm_FormClosing(object? sender, FormClosingEventArgs e)
+		{
+			Singleton.Instance.LoginResponsed -= LoginResponsed;
+		}
+
+		private async void btnLogin_Click(object sender, EventArgs e)
+		{
+			string id = tbxId.Text;
+			string nickname = tbxNickname.Text;
+			if (string.IsNullOrEmpty(id) || string.IsNullOrEmpty(nickname))
 			{
 				MessageBox.Show("Please input ID and Nickname.");
 				return;
 			}
 
-			Singleton.Instance.Id = tbxId.Text;
+			await Singleton.Instance.ConnectAsync("127.0.0.1", 20000);
-			Singleton.Instance.Nickname = tbxNickname.Text;
 
+			Singleton.Instance.Id = id;
+			Singleton.Instance.Nickname = nickname;
+
+			LoginRequestPacket packet = new LoginRequestPacket(id, nickname);
+			await Singleton.Instance.SendAsync(packet.Serialize(), SocketFlags.None);
+		}
+
+		private void LoginResponsed(object? sender, EventArgs e)
+		{
+			if (sender == null)
+				return;
+
+			LoginResponsePacket packet = (LoginResponsePacket)sender;
+			MessageBox.Show(packet.Code.ToString());
+			if (packet.Code != StatusCode.Success)
+			{
 				RoomListForm roomListForm = new RoomListForm();
 				roomListForm.ShowDialog();
 			}
+			else
+			{
+				Singleton.Instance.Socket.Shutdown(SocketShutdown.Send);
+			}
+		}
 	}
 }

Chat/Client/Singleton.cs

@@ -1,6 +1,9 @@
-using System;
+using Core;
+using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
+using System.Net.Sockets;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -12,5 +15,62 @@ namespace Client
 
 		public string Id { get; set; } = "";
 		public string Nickname { get; set; } = "";
+		public Socket Socket { get; } = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+
+		public event EventHandler? LoginResponsed;
+
+		public async Task ConnectAsync(string ip, int port)
+		{
+			IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(ip), port);
+			await this.Socket.ConnectAsync(endPoint);
+			ThreadPool.QueueUserWorkItem(ReceiveAsync, this.Socket);
+		}
+
+		public async Task<int> SendAsync(byte[] buffer, SocketFlags socketFlags)
+		{
+			return await this.Socket.SendAsync(buffer, socketFlags);
+		}
+
+		private async void ReceiveAsync(object? sender)
+		{
+			if (sender == null)
+				return;
+
+			Socket socket = (Socket)sender;
+			byte[] headerBuffer = new byte[2];
+			while (true)
+			{
+				// header buffer
+				int n1 = await socket.ReceiveAsync(headerBuffer, SocketFlags.None);
+				if (n1 < 1)
+				{
+					Console.WriteLine($"[{DateTime.Now}] Disconnect server: {socket.RemoteEndPoint}");
+					socket.Dispose();
+					return;
+				}
+				else if (n1 == 1)
+				{
+					await socket.ReceiveAsync(new ArraySegment<byte>(headerBuffer, 1, 1), SocketFlags.None);
+				}
+
+				// data buffer
+				short dataSize = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(headerBuffer));
+				byte[] dataBuffer = new byte[dataSize];
+
+				int totalRecv = 0;
+				while (totalRecv < dataSize)
+				{
+					int n2 = await socket.ReceiveAsync(new ArraySegment<byte>(dataBuffer, totalRecv, dataSize - totalRecv), SocketFlags.None);
+					totalRecv += n2;
+				}
+
+				PacketType packetType = (PacketType)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(dataBuffer));
+				if (packetType == PacketType.LoginResponse)
+				{
+					LoginResponsePacket packet = new LoginResponsePacket(dataBuffer);
+					LoginResponsed?.Invoke(packet, EventArgs.Empty);
+				}
+			}
+		}
 	}
 }

Chat/Core/IPacket.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	internal interface IPacket
+	{
+		byte[] Serialize();
+	}
+}

Chat/Core/LoginRequestPacket.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public class LoginRequestPacket : IPacket
+	{
+		public string Id { get; private set; }
+		public string NickName { get; private set; }
+
+		public LoginRequestPacket(string id, string nickname)
+		{
+			Id = id;
+			NickName = nickname;
+		}
+
+		public LoginRequestPacket(byte[] buffer)
+		{
+			int cursor = 2;
+
+			short idSize = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, cursor));
+			cursor += sizeof(short);
+
+			Id = Encoding.UTF8.GetString(buffer, cursor, idSize);
+			cursor += idSize;
+
+			short nicknameSize = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, cursor));
+			cursor += sizeof(short);
+
+			NickName = Encoding.UTF8.GetString(buffer, cursor, nicknameSize);
+		}
+
+		public byte[] Serialize()
+		{
+			// 2bytes header
+			// data: 2bytes packetType + 2bytes id size + id + 2bytes nickname size + nickname
+
+			byte[] packetType = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)PacketType.LoginRequest));
+			byte[] id = Encoding.UTF8.GetBytes(Id);
+			byte[] idSize = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)id.Length));
+			byte[] nickname = Encoding.UTF8.GetBytes(NickName);
+			byte[] nicknameSize = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)nickname.Length));
+
+			short dataSize = (short)(packetType.Length + id.Length + idSize.Length + nickname.Length + nicknameSize.Length);
+			byte[] header = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(dataSize));
+
+			byte[] buffer = new byte[2 + dataSize];
+
+			int cursor = 0;
+			Array.Copy(header, 0, buffer, cursor, header.Length);
+			cursor += header.Length;
+
+			Array.Copy(packetType, 0, buffer, cursor, packetType.Length);
+			cursor += packetType.Length;
+
+			Array.Copy(idSize, 0, buffer, cursor, idSize.Length);
+			cursor += idSize.Length;
+
+			Array.Copy(id, 0, buffer, cursor, id.Length);
+			cursor += id.Length;
+
+			Array.Copy(nicknameSize, 0, buffer, cursor, nicknameSize.Length);
+			cursor += nicknameSize.Length;
+
+			Array.Copy(nickname, 0, buffer, cursor, nickname.Length);
+
+			return buffer;
+		}
+	}
+}

Chat/Core/LoginResponsePacket.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public class LoginResponsePacket : IPacket
+	{
+		public StatusCode Code { get; set; }
+
+		public LoginResponsePacket(StatusCode code)
+		{
+			Code = code;
+		}
+
+		public LoginResponsePacket(byte[] buffer)
+		{
+			Code = (StatusCode)IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, 2));
+		}
+
+		public byte[] Serialize()
+		{
+			// 2bytes header
+			// data: 2bytes packetType + code
+
+			byte[] packetType = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)PacketType.LoginResponse));
+			byte[] code = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((int)Code));
+
+			short dataSize = (short)(packetType.Length + code.Length);
+			byte[] header = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(dataSize));
+
+			byte[] buffer = new byte[2 + dataSize];
+
+			int cursor = 0;
+			Array.Copy(header, 0, buffer, cursor, header.Length);
+			cursor += header.Length;
+
+			Array.Copy(packetType, 0, buffer, cursor, packetType.Length);
+			cursor += packetType.Length;
+
+			Array.Copy(code, 0, buffer, cursor, code.Length);
+
+			return buffer;
+		}
+	}
+}

Chat/Core/PServer.cs

@@ -62,7 +62,16 @@ namespace Core
 					int n2 = await clientSocket.ReceiveAsync(new ArraySegment<byte>(dataBuffer, totalRecv, dataSize - totalRecv), SocketFlags.None);
 					totalRecv += n2;
 				}
-				Console.WriteLine($"[{DateTime.Now}] {clientSocket.RemoteEndPoint} client: {Encoding.UTF8.GetString(dataBuffer)}");
+
+				PacketType packetType = (PacketType)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(dataBuffer));
+				if (packetType == PacketType.LoginRequest)
+				{
+					LoginRequestPacket requestPacket = new LoginRequestPacket(dataBuffer);
+					Console.WriteLine($"Id: {requestPacket.Id}, Nickname: {requestPacket.NickName}");
+
+					LoginResponsePacket responsePacket = new LoginResponsePacket(StatusCode.Success);
+					await clientSocket.SendAsync(responsePacket.Serialize(), SocketFlags.None);
+				}
 			}
 		}
 	}

Chat/Core/PacketType.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public enum PacketType
+	{
+		LoginRequest,
+		LoginResponse,
+	}
+}

Chat/Core/StatusCode.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public enum StatusCode
+	{
+		Success = 200,
+	}
+}