Network module should handle every function that iteract with socket and network.
In DHCP we need a socket listener.
Actually everything starts from our listener and our listener is our endpoint on network.
This section listen on port 67 (UDP) and prepare a platform for iteracting with network.
common validations like arping mac addresses and pinging ip addresses applied in this layer.
We get a callback from parameters and get information from this.
Listener implementation model :
listener (callback_t callback)
{
/* `TODO Recive Discovery */
/* `TODO Check requested ip address with ping */
suitableIpAddressForLease = callback(discovery);
/* `TODO send offer with `suitableIpAddressForLease` informations */
/* `TODO recive request and compare with discover */
/* `TODO if everything is OK, send ack */
/* `TODO checking arp for dhcp starvation preventation */
}We need arp checking after leasing for Dhcp Starvation preventation.
When we want to lease a ip address fist of all we should check its.
If this ip already sets statically we should create a lease from this ip and else we should skip this ip and choose next.
You should clone this repository with its dependencies
git clone https://github.com/alirezaarzehgar/dhcp-network.git --recurse-submodules
mkdir build
cd build
cmake ..
cmake --build .
sudo ./build/tests/dhcp-network-tests