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RUSTLS.md

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Rustls

Rustls is a TLS backend written in Rust. curl can be built to use it as an alternative to OpenSSL or other TLS backends. We use the rustls-ffi C bindings. This version of curl is compatible with rustls-ffi v0.14.x.

Building with Rustls

First, install Rust.

Next, check out, build, and install the appropriate version of rustls-ffi:

% git clone https://github.com/rustls/rustls-ffi -b v0.14.1
% cd rustls-ffi
% make
% make DESTDIR=${HOME}/rustls-ffi-built/ install

Now configure and build curl with Rustls:

% git clone https://github.com/curl/curl
% cd curl
% autoreconf -fi
% ./configure --with-rustls=${HOME}/rustls-ffi-built
% make

See the rustls-ffi README for more information on cryptography providers and their build/platform requirements.