Don't change properties name casing when parsing a section

Resolves #112

Author: Jericho

Source/HttpMultipartParser.UnitTests/ParserScenarios/TestData.cs

@@ -113,7 +113,9 @@ private bool ValidateFiles(MultipartFormDataParser parser)
 				if (expectedFile.ContentDisposition != actualFile.ContentDisposition) return false;
 
 				if (expectedFile.AdditionalProperties.Count != actualFile.AdditionalProperties.Count) return false;
-				if (expectedFile.AdditionalProperties.Except(actualFile.AdditionalProperties).Any()) return false;
+				if (expectedFile.AdditionalProperties.Any(pair => !actualFile.AdditionalProperties.Keys.Contains(pair.Key, StringComparer.OrdinalIgnoreCase))) return false;
+				if (actualFile.AdditionalProperties.Any(pair => !expectedFile.AdditionalProperties.Keys.Contains(pair.Key, StringComparer.OrdinalIgnoreCase))) return false;
+				if (expectedFile.AdditionalProperties.Any(pair => actualFile.AdditionalProperties[pair.Key] != pair.Value)) return false; // Case-sensitive
 
 				// Read the data from the files and see if it's the same
 				if (expectedFile.Data.CanSeek && expectedFile.Data.Position != 0) expectedFile.Data.Position = 0;

Source/HttpMultipartParser/FilePart.cs

@@ -24,6 +24,7 @@
 // </summary>
 // --------------------------------------------------------------------------------------------------------------------
 
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.IO;
@@ -97,7 +98,7 @@ public FilePart(string name, string fileName, Stream data, IDictionary<string, s
 			Data = data;
 			ContentType = contentType;
 			ContentDisposition = contentDisposition;
-			AdditionalProperties = new ReadOnlyDictionary<string, string>(additionalProperties ?? new Dictionary<string, string>());
+			AdditionalProperties = new ReadOnlyDictionary<string, string>(additionalProperties ?? new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase));
 		}
 
 		#endregion

Source/HttpMultipartParser/StreamingMultipartFormDataParser.cs

@@ -1056,7 +1056,7 @@ private void ParseSection(RebufferableBinaryReader reader)
 			// in the case of single file uploads. Multi-file uploads have Content-Disposition: file according
 			// to the spec however in practise it seems that multiple files will be represented by
 			// multiple Content-Disposition: form-data files.
-			var parameters = new Dictionary<string, string>();
+			var parameters = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
 
 			string line = reader.ReadLine();
 			while (line != string.Empty)
@@ -1091,8 +1091,9 @@ private void ParseSection(RebufferableBinaryReader reader)
 
 					// Limit split to 2 splits so we don't accidently split characters in file paths.
 					.ToDictionary(
-						x => x[0].Trim().Replace("\"", string.Empty).ToLower(),
-						x => x[1].Trim().Replace("\"", string.Empty));
+						x => x[0].Trim().Replace("\"", string.Empty),
+						x => x[1].Trim().Replace("\"", string.Empty),
+						StringComparer.OrdinalIgnoreCase);
 
 				// Here we just want to push all the values that we just retrieved into the
 				// parameters dictionary.
@@ -1155,7 +1156,7 @@ private async Task ParseSectionAsync(RebufferableBinaryReader reader, Cancellati
 			// in the case of single file uploads. Multi-file uploads have Content-Disposition: file according
 			// to the spec however in practise it seems that multiple files will be represented by
 			// multiple Content-Disposition: form-data files.
-			var parameters = new Dictionary<string, string>();
+			var parameters = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
 
 			string line = await reader.ReadLineAsync(cancellationToken).ConfigureAwait(false);
 			while (line != string.Empty)
@@ -1190,8 +1191,9 @@ private async Task ParseSectionAsync(RebufferableBinaryReader reader, Cancellati
 
 					// Limit split to 2 splits so we don't accidently split characters in file paths.
 					.ToDictionary(
-						x => x[0].Trim().Replace("\"", string.Empty).ToLower(),
-						x => x[1].Trim().Replace("\"", string.Empty));
+						x => x[0].Trim().Replace("\"", string.Empty),
+						x => x[1].Trim().Replace("\"", string.Empty),
+						StringComparer.OrdinalIgnoreCase);
 
 				// Here we just want to push all the values that we just retrieved into the
 				// parameters dictionary.
@@ -1273,8 +1275,11 @@ private IDictionary<string, string> GetAdditionalParameters(IDictionary<string,
 		{
 			var wellKnownParameters = new[] { "name", "filename", "content-type", "content-disposition" };
 			var additionalParameters = parameters
-				.Where(param => !wellKnownParameters.Contains(param.Key))
-				.ToDictionary(x => x.Key, x => x.Value);
+				.Where(param => !wellKnownParameters.Contains(param.Key, StringComparer.OrdinalIgnoreCase))
+				.ToDictionary(
+					x => x.Key,
+					x => x.Value,
+					StringComparer.OrdinalIgnoreCase);
 			return additionalParameters;
 		}