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:
If you have know that a trivial echo server can handle around 85,000 connections on your OS with roughly comparable hardware that tells you something completely different than if a trivial echo server can handle 1,000,000.