CODEWITHSUNDEEP
cnetwork-programmingvirtualization
T. Webster
T. Webster

Reputation: 10099

emulating a network interface

Can someone possibly explain (within the size of a stackoverflow answer) the code required in order to emulate a network interface? I just know that there is virtualization software out there like Qemu that does this specific type of hardware emulation, but have no idea how this would work. Lots of books will show you how to create a program that listens on a TCP socket, but not create a host that gets its own IP address.

Upvotes: 0

Views: 483

Answers (2)

vvlevchenko
vvlevchenko

Reputation: 932

It's really depends what do you mean and what do you want to achieve. If you want emulate some real hardware you need via hypervisor's primitive emulate the most aspects mentioned in datasheet of corresponding adapter, if you want introduce some service, e.g. DNS or HTTP service visible in internal network: you need port teach some user land stack (e.g. LWIP or Slirp, or part if you need UDP only or lower) to communicate with hypervisor's internal network.

Upvotes: 0

Randy Howard
Randy Howard

Reputation: 2156

VirtualBox is open source. As a VM, with networking support, it should be sufficient to demonstrate to you what to do, along with a working implementation. https://www.virtualbox.org/wiki/Downloads

Upvotes: 2

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