fix: Update request size thresholds to match other SDKs (#4177)

Changed the threshold for small request bodies from 1k to 4k to align with other SDKs (per [the docs](https://docs.sentry.io/platforms/dotnet/guides/aspnetcore/configuration/options/#max-request-body-size)).

Author: jamescrosswell

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - Redact Authorization headers before sending events to Sentry ([#4164](https://github.com/getsentry/sentry-dotnet/pull/4164))
 - Remove Strong Naming from Sentry.Hangfire ([#4099](https://github.com/getsentry/sentry-dotnet/pull/4099))
+- Increase `RequestSize.Small` threshold from 1 kB to 4 kB to match other SDKs ([#4177](https://github.com/getsentry/sentry-dotnet/pull/4177))
 
 ### Features
 

src/Sentry.AspNetCore.Grpc/ProtobufRequestExtractionDispatcher.cs

@@ -46,7 +46,7 @@ public ProtobufRequestExtractionDispatcher(IEnumerable<IProtobufRequestPayloadEx
 
         switch (size)
         {
-            case RequestSize.Small when request.ContentLength < 1_000:
+            case RequestSize.Small when request.ContentLength < 4_000:
             case RequestSize.Medium when request.ContentLength < 10_000:
             case RequestSize.Always:
                 _options.Log(SentryLevel.Debug,

src/Sentry/Extensibility/RequestBodyExtractionDispatcher.cs

@@ -42,7 +42,7 @@ public RequestBodyExtractionDispatcher(IEnumerable<IRequestPayloadExtractor> ext
 
         switch (size)
         {
-            case RequestSize.Small when request.ContentLength < 1_000:
+            case RequestSize.Small when request.ContentLength < 4_000:
             case RequestSize.Medium when request.ContentLength < 10_000:
             case RequestSize.Always:
                 _options.LogDebug("Attempting to read request body of size: {0}, configured max: {1}.",

test/Sentry.Tests/Extensibility/RequestBodyExtractionDispatcherTests.cs

@@ -51,10 +51,10 @@ public void ExtractPayload_ExtractorNull_ReturnsNull()
 
     [Theory]
     [InlineData(RequestSize.None, 1, false)]
-    [InlineData(RequestSize.Small, 999, true)]
-    [InlineData(RequestSize.Small, 10_000, false)]
+    [InlineData(RequestSize.Small, 3_999, true)]
+    [InlineData(RequestSize.Small, 4_000, false)]
     [InlineData(RequestSize.Medium, 9999, true)]
-    [InlineData(RequestSize.Medium, 100_000, false)]
+    [InlineData(RequestSize.Medium, 10_000, false)]
     [InlineData(RequestSize.Always, int.MaxValue, true)] // 2 GB event? No problem...
     public void ExtractPayload_RequestSizeSmall_ContentLength(RequestSize requestSize, int contentLength, bool readBody)
     {