From ff945fabb4d9b74822e0af7a63d042b59428003a Mon Sep 17 00:00:00 2001
From: "Adam T. Carpenter" <atc@53hor.net>
Date: Fri, 3 Oct 2025 15:44:50 -0400
Subject: init

---
 Program.cs             | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++
 fortune-pit-net.csproj | 11 ++++++++
 fortune-pit-net.sln    | 24 ++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 Program.cs
 create mode 100644 fortune-pit-net.csproj
 create mode 100644 fortune-pit-net.sln

diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..5f8de30
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,69 @@
+using System;
+using System.Net;
+using System.Net.Sockets;
+
+const char DELIM = ' ';
+const int DELAY_DURATION_S = 990;
+
+short ReadPort() => args.Length != 0 && short.TryParse(args[0], out var port) ? port : (short)22;
+
+IList<string> ReadBanner() => Console.In.ReadToEnd().Split(DELIM, StringSplitOptions.RemoveEmptyEntries);
+
+async Task SshClientHandler(TcpClient client, IEnumerable<string> banner)
+{
+    var remote = client.Client.RemoteEndPoint;
+    Console.WriteLine($"{remote}: Client connected.");
+
+    try
+    {
+        using (client)
+        {
+            var stream = client.GetStream();
+            var writer = new StreamWriter(stream) { AutoFlush = true };
+
+            while (true)
+            {
+                foreach (var word in banner)
+                {
+                    await writer.WriteAsync($"{word}{DELIM}");
+                    await Task.Delay(DELAY_DURATION_S);
+                }
+
+                Console.WriteLine($"{remote}: Client read it all!");
+            }
+        }
+    }
+    catch (Exception ex)
+    {
+        Console.WriteLine($"{remote}: Client handler error: {ex.Message}");
+    }
+    finally
+    {
+        Console.WriteLine($"{remote}: Client hung up");
+    }
+}
+
+// main 
+var banner = ReadBanner();
+var port = ReadPort();
+var listener = new TcpListener(IPAddress.Any, port);
+
+using (listener)
+{
+    listener.Start();
+    Console.WriteLine($"Listening on port {port}...");
+
+    while (true)
+    {
+        try
+        {
+            var client = await listener.AcceptTcpClientAsync();
+
+            _ = Task.Run(() => SshClientHandler(client, banner));
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Accept error: {ex.Message}");
+        }
+    }
+}
\ No newline at end of file
diff --git a/fortune-pit-net.csproj b/fortune-pit-net.csproj
new file mode 100644
index 0000000..8c4111f
--- /dev/null
+++ b/fortune-pit-net.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <RootNamespace>fortune_pit_net</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/fortune-pit-net.sln b/fortune-pit-net.sln
new file mode 100644
index 0000000..053ecd3
--- /dev/null
+++ b/fortune-pit-net.sln
@@ -0,0 +1,24 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.2.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "fortune-pit-net", "fortune-pit-net.csproj", "{411EEB40-238B-141E-1601-4515284FC02F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{411EEB40-238B-141E-1601-4515284FC02F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{411EEB40-238B-141E-1601-4515284FC02F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{411EEB40-238B-141E-1601-4515284FC02F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{411EEB40-238B-141E-1601-4515284FC02F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {CFB56DBE-DD5E-437D-B5AD-A79D112EE7BB}
+	EndGlobalSection
+EndGlobal
-- 
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