SSL Fix by default, Added support of TLS 1.1 & 1.2 (#337)

* SSL Fix by default, Now use TLS (1.2, 1.1, 1) by default
* Workaround to use TLS 1.2 & 1.1 on Mono < 4.3

src/CurlSharp/SSLFix.cs

@@ -1,13 +1,28 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Collections.ObjectModel;
 
 namespace CurlSharp
 {
+    /// <summary>
+    /// Our SSL FIX for CURL contain authorized Ciphers for SSL Communications
+    /// </summary>
     public class SSLFix
     {
-        public const string CipherList = "rsa_aes_128_sha,ecdhe_rsa_aes_256_sha,ecdhe_ecdsa_aes_128_sha";
+        // Our CiphersList
+        private static readonly ReadOnlyCollection<string> Ciphers = new ReadOnlyCollection<string>( new[] {
+            // Default supported ciphers by Jackett
+            "rsa_aes_128_sha",
+            "ecdhe_rsa_aes_256_sha",
+            "ecdhe_ecdsa_aes_128_sha"
+        });
+
+        /// <summary>
+        /// List of ciphers supported by Jackett
+        /// </summary>
+        /// <returns>Formatted string of ciphers</returns>
+        public static string CiphersList()
+        {
+            // Comma-Separated list of ciphers
+            return string.Join(",", Ciphers);
+        }
     }
 }