Why each server.services need to bind an port while client didn't need this port

[lucasjinreal]

Hi

I found this is hard to understanding compare with frp.

[server]
bind_addr = "0.0.0.0:7000" # `2333` specifies the port that rathole listens for clients

[server.services.my_nas_ssh]
token = "xx" # Token that is used to authenticate the client for the service. Change to an arbitrary value.
bind_addr = "0.0.0.0:8080" # `5202` specifies the port that exposes `my_nas_ssh` to the Internet

[server.services.fhh]
token = "xx" # Token that is used to authenticate the client for the service. Change to an arbitrary value.
bind_addr = "0.0.0.0:8081" # `5202` specifies the port that exposes `my_nas_ssh` to the Internet

the server bind port is understandable, but why each services need to bind differnt port?
When I using frp, there only 2 ports for all clients, and it can specific customized domain.

How could I do this simmilar to rathole

[Snowbelldog]

Rathole is limited to this because it is only intended for the transmission of raw streams. However, you can simply install the Nginx Proxy Manager at the server end and assign the domains to each port locally.