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spin_tls/
lib.rs

1use std::sync::Once;
2
3static INSTALL_DEFAULT_CRYPTO_PROVIDER: Once = Once::new();
4
5/// Install Spin's process-wide rustls crypto provider.
6///
7/// This is idempotent for Spin's own duplicate calls from `main` and the trigger,
8/// but fails loudly if something else installed a rustls provider first.
9pub fn install_default_crypto_provider() {
10    INSTALL_DEFAULT_CRYPTO_PROVIDER.call_once(|| {
11        rustls::crypto::ring::default_provider()
12            .install_default()
13            .expect("failed to install rustls ring crypto provider");
14    });
15}