While that little port isn't a big problem for most visual jobs, it's a hassle for parallel computing that works the CPU, GPU, and memory all in close association.
Once a completion port is created, the association of a socket with the completion port can be done by calling the function CreateIoCompletionPort in the following way.
Article 41 the port administrative department shall organize for formulation of the articles of association of the ports under its administration, which should be published.