How Does Nginx forward connections?

[sammy_raul]

Hello All,

I am thinking, how does Nginx forward TCP connections. Does it create a
single TCP connection to backend server (considering single backend) or as
many as clients connected to the Nginx proxy. What I mean to say is, as
Nginx Proxy receives a client connection, it must call Accept and create a
new Socket connection and call Connect on it every time, it receives a new
client connection.
Or does it create a single Socket to the backend at the start of Nginx and
basically sends the data over this single connection. If it is a single
connection, how does Nginx knows which client to reply when it receives
reply from the backend server.

How does it work?

Can anyone please provide some details?

Thanks,
Raul



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