added a static property to AmqpTcpEndpoint to specify the default SSL protocol versions and use it on ConnectionFactory.SetUri

Author: paulomorgado

projects/client/RabbitMQ.Client/src/client/api/AmqpTcpEndpoint.cs

@@ -40,6 +40,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Security.Authentication;
 using System.Text.RegularExpressions;
 
 namespace RabbitMQ.Client
@@ -62,6 +63,7 @@ public class AmqpTcpEndpoint// : ICloneable
         /// </summary>
         public const int DefaultAmqpSslPort = 5671;
 
+
         /// <summary>
         /// Indicates that the default port for the protocol should be used.
         /// </summary>
@@ -138,6 +140,11 @@ public AmqpTcpEndpoint CloneWithHostname(string hostname)
             return new AmqpTcpEndpoint(hostname, _port, Ssl);
         }
 
+        /// <summary>
+        /// The default Amqp SSL protocols.
+        /// </summary>
+        public static SslProtocols DefaultAmqpSslProtocols { get; set; } = SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12;
+
         /// <summary>
         /// Retrieve or set the hostname of this <see cref="AmqpTcpEndpoint"/>.
         /// </summary>
@@ -174,7 +181,7 @@ public IProtocol Protocol
         /// <summary>
         /// Used to force the address family of the endpoint
         /// </summary>
-        public System.Net.Sockets.AddressFamily AddressFamily {get; set;}
+        public System.Net.Sockets.AddressFamily AddressFamily { get; set; }
 
         /// <summary>
         /// Retrieve the SSL options for this AmqpTcpEndpoint. If not set, null is returned.
@@ -228,7 +235,7 @@ public static AmqpTcpEndpoint Parse(string address)
         /// </remarks>
         public static AmqpTcpEndpoint[] ParseMultiple(string addresses)
         {
-            string[] partsArr = addresses.Split(new[] {','});
+            string[] partsArr = addresses.Split(new[] { ',' });
             var results = new List<AmqpTcpEndpoint>();
             foreach (string partRaw in partsArr)
             {

projects/client/RabbitMQ.Client/src/client/api/ConnectionFactory.cs

@@ -517,6 +517,7 @@ private void SetUri(Uri uri)
             else if (string.Equals("amqps", uri.Scheme, StringComparison.OrdinalIgnoreCase))
             {
                 Ssl.Enabled = true;
+                Ssl.Version = AmqpTcpEndpoint.DefaultAmqpSslProtocols;
 #if !(NETFX_CORE)
                 Ssl.AcceptablePolicyErrors = SslPolicyErrors.RemoteCertificateNameMismatch;
 #endif