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:
For incoming connection there is no limit from network perspective and therefore limit is on side of application or HW of server itself - apparently server with 512GB of RAM and 96-cores can handle different load than server with 3GB RAM and 1-core...