feat(client): enable gzip decompression

Author: stainless-app[bot]

src/Orb/Core/ClientOptions.cs

@@ -22,7 +22,8 @@ public record struct ClientOptions()
     /// <summary>
     /// The HTTP client to use for making requests in the SDK.
     /// </summary>
-    public HttpClient HttpClient { get; set; } = new();
+    public HttpClient HttpClient { get; set; } =
+        new(new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.Available });
 
     Lazy<string> _baseUrl = new(() =>
         Environment.GetEnvironmentVariable("ORB_BASE_URL") ?? EnvironmentUrl.Production

src/Orb/Core/DecompressionMethods.cs

@@ -0,0 +1,49 @@
+using System.IO;
+using System.IO.Compression;
+using Net = System.Net;
+
+namespace Orb.Core;
+
+static class DecompressionMethods
+{
+    internal static readonly Net::DecompressionMethods Available;
+
+    static DecompressionMethods()
+    {
+        try
+        {
+            // Minimal valid GZip payload (empty body).
+            var gzipPayload = new byte[]
+            {
+                0x1f,
+                0x8b,
+                0x08,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x03,
+                0x03,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+                0x00,
+            };
+            using var memoryStream = new MemoryStream(gzipPayload);
+            using var gzipStream = new GZipStream(memoryStream, CompressionMode.Decompress);
+            gzipStream.CopyTo(Stream.Null);
+            Available = Net::DecompressionMethods.GZip;
+        }
+        catch
+        {
+            Available = Net::DecompressionMethods.None;
+        }
+    }
+}