mdns_lite v0.4.3 MdnsLite View Source

A simple implementation of an mDNS (multicast DNS (Domain Name Server)) server. mDNS uses multicast UDP rather than TCP. Its primary use is to provide DNS support for the local domain. MdnsLite listens on a well-known ip address/port. If a request arrives that it recognizes, it constructs the appropriate DNS response.

MdnsLite responds to a limited number of DNS requests; they are all handled in the MdnsLite.Query module. Of particular note is the SRV request. The response will be a list of known services and how to contact them (domain and port) as described in the configuration file.

MdnsLite uses a "network monitor", a module that listens for changes in a network. Its purpose is to ensure that the network interfaces are up to date. The current version of MdnsLite has an MdnsLite.InetMonitor which periodically checks, via inet:getifaddrs(), for changes in the network. For example, a change could be the re-assignment of IP addresses.

This module is initialized, at runtime, with host information and service descriptions found in the config.exs file. The descriptions will be used by MdnsLite to construct a response to a query.

Please refer to the README.md for further information.