The usefulness of bind() system call

Insights on binding IP addresses and port numbers

First of all, CSocket does not use Bind!SOCKET only uses Bind.

bind() is to assign a specified port to the socket to be bound.This port can then be used to "listen" for network requests.bind() is used on the server side, and the general port is well known to facilitate the provision of services.After the port is allocated, other sockets can no longer use this port.It is equivalent to telling the client side "to request service, send to this port".The client side does not need to bind. Each time a socket system is built, a temporary port will be allocated, which will be released after use.