socket flag

SocketFlag/Server/Server.cs

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+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+
+namespace Server;
+
+internal class Server
+{
+	static void Main(string[] args)
+	{
+		Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+		serverSocket.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 20000));
+		serverSocket.Listen(10);
+
+		Socket clientSocket = serverSocket.Accept();
+		Console.WriteLine(clientSocket.RemoteEndPoint);
+
+		byte[] buffer1 = new byte[6];
+		int n1 = clientSocket.Receive(buffer1, SocketFlags.None);
+		Console.WriteLine(Encoding.UTF8.GetString(buffer1));
+
+		byte[] buffer2 = new byte[256];
+		int n2 = clientSocket.Receive(buffer2, 2, 100, SocketFlags.OutOfBand); // OOB 활성화 시 1바이트만 읽어옴
+		Console.WriteLine("OOB data length: " + n2);
+
+		int n3 = clientSocket.Receive(buffer2, 0, 2, SocketFlags.None);
+		Console.WriteLine(Encoding.UTF8.GetString(buffer2));
+
+		Console.ReadLine();
+	}
+}

SocketFlag/Server/Server.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>