Memcached and SSL results in "The handshake failed due to an unexpected packet format."

System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.
---> System.IO.IOException: The handshake failed due to an unexpected packet format.
at System.Net.Security.SslStream.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslStream.PartialFrameCallback(AsyncProtocolRequest asyncRequest)
— End of stack trace from previous location where exception was thrown —
at System.Net.Security.SslStream.ThrowIfExceptional()
at System.Net.Security.SslStream.InternalEndProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.Security.SslStream.EndProcessAuthentication(IAsyncResult result)
at System.Net.Security.SslStream.EndAuthenticateAsClient(IAsyncResult asyncResult)
at System.Net.Security.SslStream.<>c.<AuthenticateAsClientAsync>b__65_1(IAsyncResult iar)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
— End of stack trace from previous location where exception was thrown —
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)
— End of inner exception stack trace —
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean allowHttp2, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.GetHttpConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DiagnosticsHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
at Couchbase.Core.Configuration.Server.Streaming.HttpClusterMap.GetClusterMapAsync(String bucketName, HostEndpoint hostEndpoint, CancellationToken cancellationToken) in C:\code\couchbase-net-client\src\Couchbase\Core\Configuration\Server\Streaming\HttpClusterMap.cs:line 41
at Couchbase.MemcachedBucket.BootstrapAsync(IClusterNode node) in C:\code\couchbase-net-client\src\Couchbase\MemcachedBucket.cs:line 118
at Couchbase.Core.ClusterContext.CreateAndBootStrapBucketAsync(String name, HostEndpoint endpoint, BucketType type) in C:\code\couchbase-net-client\src\Couchbase\Core\ClusterContext.cs:line 342
at Couchbase.Core.ClusterContext.CreateAndBootStrapBucketAsync(String name, HostEndpoint endpoint, BucketType type) in C:\code\couchbase-net-client\src\Couchbase\Core\ClusterContext.cs:line 353
at Couchbase.Core.ClusterContext.GetOrCreateBucketAsync(String name) in C:\code\couchbase-net-client\src\Couchbase\Core\ClusterContext.cs:line 310