Multicast DNS
Multicast DNS, or mDNS for short, is like a phone book for computers and other devices on a network. When you want to talk to a computer or device on your network, you need to know its address. An address can be like a phone number, made up of numbers and dots, or it can be a name like a person's name.
With mDNS, every device on the network can give themselves a name, like a nickname, and this name makes it easy for other devices on the network to find them.
Imagine you are at a big party and you want to find your friend. Your friend may have told you where they are sitting, but that could be hard to remember. Instead, you could ask the other people at the party if they have seen your friend and describe them as "the one wearing a yellow shirt" or "the one with curly hair." This is kind of like how mDNS works.
Every time a device joins the network, it sends out a special message saying "Hey, I'm here and my name is [insert name here]." Then, other devices on the network can listen for these messages and remember the names of the devices.
So, now when you want to talk to a device on your network, you can just use its name instead of having to remember its long address. And just like at the party, if a device changes its name or leaves the network, it will send out another special message to let everyone know.
With mDNS, every device on the network can give themselves a name, like a nickname, and this name makes it easy for other devices on the network to find them.
Imagine you are at a big party and you want to find your friend. Your friend may have told you where they are sitting, but that could be hard to remember. Instead, you could ask the other people at the party if they have seen your friend and describe them as "the one wearing a yellow shirt" or "the one with curly hair." This is kind of like how mDNS works.
Every time a device joins the network, it sends out a special message saying "Hey, I'm here and my name is [insert name here]." Then, other devices on the network can listen for these messages and remember the names of the devices.
So, now when you want to talk to a device on your network, you can just use its name instead of having to remember its long address. And just like at the party, if a device changes its name or leaves the network, it will send out another special message to let everyone know.