An effort was made to shore up the Open Door in 1921-22 at the Washington Naval Conference, but a challenge was again mounted by the Japanese in the 1930s as they expanded their control in Manchuria. China would not be recognized as a sovereign state until after World War II.
The maximum number of connections across SQL Server versions and editions is 32,767. You can determine how many connections SQL Server currently has by looking at:
Beginning with SQL Server 2008, support for service principal names (SPNs) has been extended to enable mutual authentication across all protocols. In previous versions of SQL Server, SPNs were only supported for Kerberos over TCP when the default SPN for the SQL Server instance was registered with Active Directory.