2 files changed, 29 insertions, 10 deletions
diff --git a/Emby.Common.Implementations/BaseApplicationHost.cs b/Emby.Common.Implementations/BaseApplicationHost.cs
index 87b97863b..147a43fa1 100644
--- a/Emby.Common.Implementations/BaseApplicationHost.cs
+++ b/Emby.Common.Implementations/BaseApplicationHost.cs
@@ -527,7 +527,7 @@ return null;
 
             RegisterSingleInstance(FileSystemManager);
 
-            HttpClient = new HttpClientManager.HttpClientManager(ApplicationPaths, LogManager.GetLogger("HttpClient"), FileSystemManager, MemoryStreamFactory);
+            HttpClient = new HttpClientManager.HttpClientManager(ApplicationPaths, LogManager.GetLogger("HttpClient"), FileSystemManager, MemoryStreamFactory, GetDefaultUserAgent);
             RegisterSingleInstance(HttpClient);
 
             RegisterSingleInstance(NetworkManager);
@@ -549,6 +549,30 @@ return null;
             return Task.FromResult(true);
         }
 
+        private string GetDefaultUserAgent()
+        {
+            var name = FormatAttribute(Name);
+
+            return name + "/" + ApplicationVersion.ToString();
+        }
+
+        private string FormatAttribute(string str)
+        {
+            var arr = str.ToCharArray();
+
+            arr = Array.FindAll<char>(arr, (c => (char.IsLetterOrDigit(c)
+                                              || char.IsWhiteSpace(c))));
+
+            var result = new string(arr);
+
+            if (string.IsNullOrWhiteSpace(result))
+            {
+                result = "Emby";
+            }
+
+            return result;
+        }
+
         /// <summary>
         /// Gets a list of types within an assembly
         /// This will handle situations that would normally throw an exception - such as a type within the assembly that depends on some other non-existant reference
diff --git a/Emby.Common.Implementations/HttpClientManager/HttpClientManager.cs b/Emby.Common.Implementations/HttpClientManager/HttpClientManager.cs
index 0abcaadb1..737cdcc7d 100644
--- a/Emby.Common.Implementations/HttpClientManager/HttpClientManager.cs
+++ b/Emby.Common.Implementations/HttpClientManager/HttpClientManager.cs
@@ -44,18 +44,12 @@ namespace Emby.Common.Implementations.HttpClientManager
 
         private readonly IFileSystem _fileSystem;
         private readonly IMemoryStreamFactory _memoryStreamProvider;
-        private readonly IApplicationHost _appHost;
+        private readonly Func<string> _defaultUserAgentFn;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="HttpClientManager" /> class.
         /// </summary>
-        /// <param name="appPaths">The app paths.</param>
-        /// <param name="logger">The logger.</param>
-        /// <param name="fileSystem">The file system.</param>
-        /// <exception cref="System.ArgumentNullException">appPaths
-        /// or
-        /// logger</exception>
-        public HttpClientManager(IApplicationPaths appPaths, ILogger logger, IFileSystem fileSystem, IMemoryStreamFactory memoryStreamProvider)
+        public HttpClientManager(IApplicationPaths appPaths, ILogger logger, IFileSystem fileSystem, IMemoryStreamFactory memoryStreamProvider, Func<string> defaultUserAgentFn)
         {
             if (appPaths == null)
             {
@@ -70,6 +64,7 @@ namespace Emby.Common.Implementations.HttpClientManager
             _fileSystem = fileSystem;
             _memoryStreamProvider = memoryStreamProvider;
             _appPaths = appPaths;
+            _defaultUserAgentFn = defaultUserAgentFn;
 
 #if NET46
             // http://stackoverflow.com/questions/566437/http-post-returns-the-error-417-expectation-failed-c
@@ -284,7 +279,7 @@ namespace Emby.Common.Implementations.HttpClientManager
 
             if (!hasUserAgent && options.EnableDefaultUserAgent)
             {
-                SetUserAgent(request, _appHost.Name + "/" + _appHost.ApplicationVersion.ToString());
+                SetUserAgent(request, _defaultUserAgentFn());
             }
         }