core: increate httpclient timeout for update download. resolves #12711 (#12836)

* Update download timeout => 100s => 300 s

src/Jackett.Common/Services/UpdateService.cs

@@ -44,6 +44,10 @@ namespace Jackett.Common.Services
             filePermissionService = fps;
 
             variant = new Variants().GetVariant();
+
+            // Increase the HTTP client timeout just for update download (not other requests)
+            // The update is heavy and can take longer time for slow connections. Fix #12711
+            client.SetTimeout(300); // 5 minutes
         }
 
         public void StartUpdateChecker() => Task.Factory.StartNew(UpdateWorkerThread);

src/Jackett.Common/Utils/Clients/HttpWebClient.cs

@@ -49,6 +49,8 @@ namespace Jackett.Common.Utils.Clients
             return sslPolicyErrors == SslPolicyErrors.None;
         }
 
+        public override void SetTimeout(int seconds) => ClientTimeout = seconds;
+
         public override void Init()
         {
             base.Init();
@@ -92,6 +94,7 @@ namespace Jackett.Common.Utils.Clients
                     clearanceHandlr.InnerHandler = clientHandlr;
                     using (var client = new HttpClient(clearanceHandlr))
                     {
+                        client.Timeout = TimeSpan.FromSeconds(ClientTimeout);
                         using (var request = new HttpRequestMessage())
                         {
                             request.Headers.ExpectContinue = false;

src/Jackett.Common/Utils/Clients/HttpWebClient2.cs

@@ -77,6 +77,8 @@ namespace Jackett.Common.Utils.Clients
 
             clearanceHandlr.InnerHandler = clientHandlr;
             client = new HttpClient(clearanceHandlr);
+
+            SetTimeout(ClientTimeout);
         }
 
         // Called everytime the ServerConfig changes
@@ -90,6 +92,12 @@ namespace Jackett.Common.Utils.Clients
             }
         }
 
+        public override void SetTimeout(int seconds)
+        {
+            ClientTimeout = seconds;
+            client.Timeout = TimeSpan.FromSeconds(ClientTimeout);
+        }
+
         public override void Init()
         {
             base.Init();

src/Jackett.Common/Utils/Clients/WebClient.cs

@@ -25,6 +25,7 @@ namespace Jackett.Common.Utils.Clients
         protected DateTime lastRequest = DateTime.MinValue;
         protected TimeSpan requestDelayTimeSpan;
         protected string ClientType;
+        protected int ClientTimeout = 100; // default timeout is 100 s
         public bool EmulateBrowser = true;
 
         protected static Dictionary<string, ICollection<string>> trustedCertificates = new Dictionary<string, ICollection<string>>();
@@ -224,6 +225,8 @@ namespace Jackett.Common.Utils.Clients
                 InitProxy(serverConfig);
         }
 
+        public virtual void SetTimeout(int seconds) => throw new NotImplementedException();
+
         /**
          * This method does the same as FormUrlEncodedContent but with custom encoding instead of utf-8
          * https://stackoverflow.com/a/13832544