My original program using Delphi the default port 211, later changed to define your own port, the new change of the program can be used, but the old port of the program is unusable, is this why? Because the old program also need maintenance, so can't give up,

CodePudding user response:

Port 211 is the default Delphi, you modify after using the new port, may be the old program, or use the default goods, the client and server, port, connection, of course not,