Add compression-level option (#147)

src/dotnet-serve/CommandLineOptions.cs

@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.ComponentModel.DataAnnotations;
+using System.IO.Compression;
 using System.Net;
 using System.Reflection;
 using McMaster.Extensions.CommandLineUtils;
@@ -124,6 +125,9 @@ public virtual bool UseTls
     [Option("-b|--brotli", Description = "Enable brotli compression")]
     public bool? UseBrotli { get; internal set; }
 
+    [Option("--compression-level", Description = "The level of compression to use, when compression is enabled")]
+    public CompressionLevel? CompressionLevel { get; internal set; }
+
     [Option("-c|--cors", Description = "Enable CORS (It will enable CORS for all origin and all methods)")]
     public bool? EnableCors { get; internal set; }
 

src/dotnet-serve/Program.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Nate McMaster.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System.IO.Compression;
 using DotNetConfig;
 using McMaster.Extensions.CommandLineUtils;
 
@@ -93,6 +94,9 @@ private static void ReadConfig(ConfigSection config, CommandLineOptions model)
         model.CertificatePassword ??= config.GetString("pfx-pwd");
         model.UseGzip ??= config.GetBoolean("gzip");
         model.UseBrotli ??= config.GetBoolean("brotli");
+        model.CompressionLevel ??= config.GetString("compression-level") is string compressionLevel
+            ? Enum.Parse<CompressionLevel>(compressionLevel, ignoreCase: true)
+            : default;
         model.EnableCors ??= config.GetBoolean("cors");
         model.PathBase ??= config.GetString("path-base");
         model.FallbackFile ??= config.GetString("fallback-file");

src/dotnet-serve/Startup.cs

@@ -54,13 +54,23 @@ public void ConfigureServices(IServiceCollection services)
 
             if (_options.UseGzip == true)
             {
-                options.Providers.Add<GzipCompressionProvider>();
+                var gzipCompressionProvider = new GzipCompressionProvider(new GzipCompressionProviderOptions
+                {
+                    Level = _options.CompressionLevel ?? System.IO.Compression.CompressionLevel.Fastest
+                });
+
+                options.Providers.Add(gzipCompressionProvider);
             }
 
 
             if (_options.UseBrotli == true)
             {
-                options.Providers.Add<BrotliCompressionProvider>();
+                var brotliCompressionProvider = new BrotliCompressionProvider(new BrotliCompressionProviderOptions
+                {
+                    Level = _options.CompressionLevel ?? System.IO.Compression.CompressionLevel.Fastest
+                });
+
+                options.Providers.Add(brotliCompressionProvider);
             }
         });