Change processing of User Platform header

Author: YomesInc

CloudinaryDotNet.Tests/Asset/UrlBuilderTest.cs

@@ -491,22 +491,36 @@ private HttpRequestMessage CreateRequest(string userPlatform)
         [Test]
         public void TestAgentPlatformHeaders()
         {
-            var httpRequestMessage = CreateRequest("UserPlatform");
+            var httpRequestMessage = CreateRequest("UserPlatform/2.3");
 
             //Can't test the result, so we just verify the UserAgent parameter is sent to the server
-            StringAssert.IsMatch(@"CloudinaryDotNet\/(\d+)\.(\d+)\.(\d+) \(" + ApiShared.USER_AGENT.Replace("(", "").Replace(")", "") + @"\) \(UserPlatform\)",
+            StringAssert.IsMatch(@"CloudinaryDotNet\/(\d+)\.(\d+)\.(\d+) \(" + ApiShared.USER_AGENT.Replace("(", "").Replace(")", "") + @"\) UserPlatform/2\.3",
                 httpRequestMessage.Headers.UserAgent.ToString());
         }
 
         [Test]
-        public void UnityUserAgentShouldNotThrow()
+        [TestCase(null)]
+        [TestCase("")]
+        [TestCase(" ")]
+        [TestCase("UserPlatform/")]
+        [TestCase("UserPlatform/ ")]
+        [TestCase("UserPlatform / 1.2")]
+        public void UnexpectedUserPlatformShouldNotThrow(string userPlatorm)
+        {
+            Assert.DoesNotThrow(() => CreateRequest(userPlatorm));
+        }
+
+        [Test]
+        [TestCase("Mono 5.11.0 ((HEAD/768f1b247c6)")]
+        [TestCase("(")]
+        [TestCase(")")]
+        public void MalformedUserAgentShouldNotThrow(string userAgent)
         {
-            var userAgent = "Mono 5.11.0 ((HEAD/768f1b247c6)";
             var prevAgent = ApiShared.USER_AGENT;
             ApiShared.USER_AGENT = userAgent;
             try
             {
-                var httpRequestMessage = CreateRequest("UserPlatform");
+                Assert.DoesNotThrow(() => CreateRequest("UserPlatform"));
             }
             finally
             {

CloudinaryDotNet/ApiShared.Internal.cs

@@ -257,12 +257,17 @@ private static void AddCommentToUserAgent(
                 return;
             }
 
-            var normalizedComment = comment
-                           .Replace(")", string.Empty)
-                           .Replace("(", string.Empty);
+            var normalizedComment = RemoveBracketsFrom(comment);
             userAgentHeader.Add(new ProductInfoHeaderValue($"({normalizedComment})"));
         }
 
+        private static string RemoveBracketsFrom(string comment)
+        {
+            return comment
+                       .Replace(")", string.Empty)
+                       .Replace("(", string.Empty);
+        }
+
         private static SortedDictionary<string, object> GetCallParams(HttpMethod method, BaseParams parameters)
         {
             parameters?.Check();
@@ -474,7 +479,7 @@ private void PrePrepareRequestBody(
             userAgentHeader.Add(new ProductInfoHeaderValue("CloudinaryDotNet", CloudinaryVersion.Full));
 
             AddCommentToUserAgent(userAgentHeader, USER_AGENT);
-            AddCommentToUserAgent(userAgentHeader, UserPlatform);
+            SetUserPlatform(userAgentHeader);
 
             byte[] authBytes = Encoding.ASCII.GetBytes(GetApiCredentials());
             request.Headers.Add("Authorization", string.Format(CultureInfo.InvariantCulture, "Basic {0}", Convert.ToBase64String(authBytes)));
@@ -494,6 +499,36 @@ private void PrePrepareRequestBody(
             }
         }
 
+        private void SetUserPlatform(HttpHeaderValueCollection<ProductInfoHeaderValue> userAgentHeader)
+        {
+            Console.WriteLine($"UserPlatform: [{UserPlatform}] ======");
+            var up = UserPlatform?.Trim();
+            if (string.IsNullOrEmpty(up))
+            {
+                return;
+            }
+
+            var upp = up.Split('/');
+            var productName = GetElement(0);
+            if (string.IsNullOrEmpty(productName))
+            {
+                return;
+            }
+
+            var productVersion = GetElement(1);
+            if (string.IsNullOrEmpty(productVersion))
+            {
+                productVersion = "0.1";
+            }
+
+            userAgentHeader.Add(new ProductInfoHeaderValue(productName, productVersion));
+
+            string GetElement(int index)
+            {
+                return upp.ElementAtOrDefault(index)?.Trim();
+            }
+        }
+
         private async Task PrepareRequestContentAsync(
             HttpRequestMessage request,
             SortedDictionary<string, object> parameters,