CODEWITHSUNDEEP
c++tcpip
The bottle
The bottle

Reputation: 11

How to get the IP that others can use to connect to my socket build in c++

My computer is using Wi-Fi provided by a tplink router.

I am using a website to get my IP, https://www.whatismyip.com.

My code is fine, because I can connect to the socket in my own computer by using 127.0.0.1.

Here is my code from https://www.geeksforgeeks.org/socket-programming-cc/amp/

But I don't know why my friend can't connect to my socket using the IP I get from the website.

I wonder, do I need to set up something in my router, or am I using the wrong code?

Upvotes: 0

Views: 49

Answers (1)

Soulimane Mammar
Soulimane Mammar

Reputation: 1868

What you get from whatismyip.com is your public IP address. Your computer is probably behind a NAT/PAT (Network Address Translation / Port Address Translation), meaning your machine has a private IP address that gets translated by your router/firewall into the public one displayed by whatismyip.com

You have two solutions:

  1. Get a public IP address from your Internet provider, and disable NAT on your router (probably you'll need help for this).

  2. Configure port forwarding on your router so that it forwards traffic on your public IP address to a given port on your machine.

Upvotes: 1

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