[fix] handle partial reads in StaticFile.GetDataAsync and add NET7_0_OR_GREATER branch using ReadExactlyAsync

Author: i4004

src/Simplify.Web/CHANGELOG.md

@@ -10,6 +10,10 @@
 
 - Removed .NET 6 Support
 
+### Changed
+
+- Handle partial reads in StaticFile.GetDataAsync and add NET7_0_OR_GREATER branch using ReadExactlyAsync
+
 ### Dependencies
 
 - Microsoft.Extensions.Configuration.Binder bump to 10.0.9

src/Simplify.Web/StaticFiles/IO/StaticFile.cs

@@ -58,12 +58,21 @@ public async Task<byte[]> GetDataAsync(string relativeFilePath)
 		var result = new byte[stream.Length];
 
 		await stream.ReadAsync(result, 0, (int)stream.Length);
+
+#elif NET7_0_OR_GREATER
+		await using var stream = File.Open(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read);
+
+		var result = new byte[stream.Length];
+
+		await stream.ReadExactlyAsync(result);
 #else
 		await using var stream = File.Open(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read);
 
 		var result = new byte[stream.Length];
+		var totalBytesRead = 0;
 
-		await stream.ReadAsync(result.AsMemory(0, (int)stream.Length));
+		while (totalBytesRead < result.Length)
+			totalBytesRead += await stream.ReadAsync(result.AsMemory(totalBytesRead, result.Length - totalBytesRead));
 #endif
 
 		return result;