Zhen Li

I found TcpSocketClient cannot establish TLS 1.1 and TLS 1.2 secured connections. I trace down the code and found [this](https://github.com/rdavisau/sockets-for-pcl/blob/v1.2.2/Sockets/Sockets.Implementation.NET/TcpSocketClient.cs#L62) piece of code which might limit how I could establish...

### Use-cases Between 2 workspaces, it is only allowed to have one recipient, but multiple shares. When creating a share, users normally also attempt to create a recipient assuming there...