This crate provides a no_std implementation of the DNS protocol.
In order to make it trivial for others to build implementations of the DNS protocol, this crate provides a [sans-I/O] implementation of the protocol. This means that it doesn't provide any I/O functionality, but instead provides a way to parse and serialize DNS messages.
In addition, this crate is not only no_std, but also alloc-free. This means that it can be used in environments where alloc is not available, such as embedded systems. It also has no unsafe code.
However, there is a catch. Since this system does not allocate, the user is responsible for providing a buffer to parse DNS messages into. This means that the user must know the maximum size of a DNS message that they will be parsing. This is a reasonable assumption, since DNS messages are limited to 512 bytes in the common case.
Dual licensed under the MIT and Apache 2.0 licenses.