Reference article: charles port forwarding
Port Forwarding
Forwarding port (Port forwarding), sometimes called the tunnel, is a Secure Shell (SSH) is a method used in a secure communication network. Port forwarding is forwarding a network port from a network node to another network node behavior, which enables a user outside to be activated through a NAT router reach a port on a private internal IP address (internal LAN) from the outside.
Port forwarding allows you to transparently forward the local TCP or UDP port to a remote host and port. All requests and responses may be recorded in the port of Charleston.
Port forwarding traffic records as Charles in socket//hostport/URL
If you want to use Charles monitor non-HTTP applications, the port forwarding is useful.
The original target server to create the port, then connect the client application to the local port;
Port forwarding is transparent to the client application, and allows you to view the traffic previously Charles may not be used
example
You can use TCP port 2525 on the local host forwarded to port 25 on a remote host.
Then when you connect to localhost: 2525 Charles transparently forward traffic to the remote host, as if you were directly connected to the same.
You will see Charles recorded in the flow socket // localhost2525 /.
Of course, I usually use these functions much;
herein by reference: https://www.axihe.com/