Реализована запись полученных кадров в файл

Client/Program.cs

@@ -1,4 +1,6 @@
 using System;
+using System.IO;
+using System.Linq;
 using System.Net.Http;
 using System.Text;
 using System.Text.Json;
@@ -9,14 +11,32 @@ using Domain;
 using Domain.Dto;
 using MessagePack;
 
-if (args.Length < 2)
+if (args.Length == 0 || args.Contains("--help") || args.Contains("-h"))
 {
-    System.Console.WriteLine("Pass two args: http/tcp and json/bin");
+    PrintHelp();
+    return 0;
+}
+
+if (args.Length < 2 || (args.Length > 2 && !args[2].StartsWith("--save-dir=")))
+{
+    Console.WriteLine("Error: Insufficient arguments provided.");
+    Console.WriteLine();
+    PrintHelp();
     return -1;
 }
 
 var protocol = args[0];
 var serialization = args[1];
+string? saveDir = null;
+if (args.Length >= 3)
+{
+    saveDir = args[2].Substring("--save-dir=".Length);
+    if (Directory.Exists(saveDir) == false)
+    {
+        System.Console.WriteLine("Save dir does not exist. Ignore.");
+    }
+}
+
 IClient? client = protocol switch
 {
     "http" => new HttpClientWrapper(serialization == "json" ? ConvertJsonResponse : ConvertMessagePackResponse),
@@ -24,6 +44,17 @@ IClient? client = protocol switch
     _ => null
 };
 
+if (saveDir != null)
+{
+    // Create FrameAssembler
+    var frameAssembler = new FrameAssembler(frame =>
+    {
+        SaveFrame(frame, saveDir);
+    });
+
+    client?.RegisterCallback(frameAssembler.AddData);
+}
+
 client?.Start();
 System.Console.WriteLine("Client started:");
 System.Console.WriteLine(client);
@@ -44,6 +75,44 @@ while (true)
     Thread.Sleep(1000);
 }
 
+static void PrintHelp()
+{
+    Console.WriteLine("NetworkTest Client - A network testing client application");
+    Console.WriteLine();
+    Console.WriteLine("USAGE:");
+    Console.WriteLine("  Client <protocol> <serialization> [--save-dir=<path>]");
+    Console.WriteLine();
+    Console.WriteLine("ARGUMENTS:");
+    Console.WriteLine("  <protocol>      The protocol to use:");
+    Console.WriteLine("                    - http: Connect using HTTP");
+    Console.WriteLine("                    - tcp:  Connect using TCP");
+    Console.WriteLine();
+    Console.WriteLine("  <serialization> The serialization format:");
+    Console.WriteLine("                    - json: Use JSON serialization");
+    Console.WriteLine("                    - bin:  Use MessagePack binary serialization");
+    Console.WriteLine();
+    Console.WriteLine("OPTIONS:");
+    Console.WriteLine("  --save-dir=<path>  Directory to save received frames (optional)");
+    Console.WriteLine("  --help, -h         Show this help message");
+    Console.WriteLine();
+    Console.WriteLine("EXAMPLES:");
+    Console.WriteLine("  Client http json");
+    Console.WriteLine("  Client tcp bin --save-dir=./frames");
+    Console.WriteLine("  Client --help");
+    Console.WriteLine();
+    Console.WriteLine("The client will connect to the server and start receiving data. Press Ctrl+C to stop.");
+}
+
+static void SaveFrame(List<Data> frame, string saveDir)
+{
+    var fileName = $"frame_{frame[0].FrameIndex}";
+    fileName += ".json";
+    var jsonDatas = frame.Select(d => new JsonData(d)).ToList();
+    var options = new JsonSerializerOptions { WriteIndented = true };
+    var json = JsonSerializer.Serialize(jsonDatas, options);
+    File.WriteAllText(Path.Combine(saveDir, fileName), json);
+}
+
 static async Task<Data?> ConvertJsonResponse(HttpResponseMessage response)
 {
     var json = await response.Content.ReadAsStringAsync();