A machine has 2 NICs. Which one will be utilized when connecting to a socket?

Question

Suppose I create a very simple socket connection, how can one programatically:

1. Find out what interface (ip address / NIC) is being used.
2. Force the ot

Answer 1

You will find these links usefull, since the question doesn't provide a language, here's for the most common ones.

Socket Programming in C

Socket Programming in C#

Socket Programming in Java

Socket Programming in Python

So, use any of these links and go to the languge you are using. Find the function for getting your host address or ip address and use the Bind method for the appropriet language. This will force the application to bind to that interface.