Connections leak when setting TLS 1.2 through the connection string

[jesuissur]

When we set SSL to TLS 1.2 through the connection string (as stated in this issue) and we upgraded from 5.5.0 to 6.3.4, our Redis clients connections went through the roof.

With the 5.5.0 version, our connections count floats around 600 for our app.
With the 6.3.4 version and the TLS configuration through the connection string, we've seen thousands of connections (as many as our server allowed, 10K).

To Reproduce
Our initial configuration (with the 5.5.0 version and same StackExchange.Redis package) was something like this:

            return new RedisConfiguration
                   {
                       KeyPrefix = _cachingOptions.Value.InstanceName,
                       AbortOnConnectFail = false,
                       Ssl = _cachingOptions.Value.Ssl,
                       Password = _cachingOptions.Value.Password,
                       SyncTimeout = 5000,
                       PoolSize = 20,
                       Hosts = new[] {new RedisHost {Host = _cachingOptions.Value.Host, Port = _cachingOptions.Value.Port}}
                   };
  

And after the upgrade to 6.3.4 and supports for TLS 1.2, the config looked like that

            var underlyingRedisClientConfig = new ConfigurationOptions
                                              {
                                                  AbortOnConnectFail = false,
                                                  Password = _cachingOptions.Value.Password,
                                                  Ssl = _cachingOptions.Value.Ssl,
                                                  SslProtocols = SslProtocols.Tls12,
                                                  SyncTimeout = 5000
                                              };
            var endPoint = new DnsEndPoint(_cachingOptions.Value.Host, _cachingOptions.Value.Port);
            underlyingRedisClientConfig.EndPoints.Add(endPoint);

            return new RedisConfiguration
                   {
                       ConnectionString = underlyingRedisClientConfig.ToString(true),
                       KeyPrefix = _cachingOptions.Value.InstanceName,
                       PoolSize = 20
                   };
 

Expected behavior
No more connections than expected (before upgrading).

Env: Azure Windows App Services:

• .Net framework 4.7 and .Net Core 2.2
• StackExchange.Redis.Extensions 6.3.4
• StackExchange.Redis 2.1.58

[imperugo]

please take a look to 6.3.5 that is on nuget now.

Basically I've removed the invalidate part / reconnect because the multiplex does it automatically. The connection management is like the 5.x version.
Let me know

[imperugo]

Old issue, going to close it