Make tokio-rustls dependency optional

Cargo.toml

@@ -7,14 +7,16 @@ authors = ["Ritesh Chitlangi <ritesh@ayravat.com>"]
 description = "EPP (Extensible Provisioning Protocol) Client Library for Domain Registration and Management"
 repository = "https://github.com/masalachai/epp-client"
 
+[features]
+default = ["tokio-rustls"]
+
 [dependencies]
 celes = "2.1"
 chrono = "0.4"
 quick-xml = { version = "0.22", features = [ "serialize" ] }
-rustls = "0.20"
 serde = { version = "1.0", features = ["derive"] }
 tokio = { version = "1.0", features = [ "full" ] }
-tokio-rustls = "0.23"
+tokio-rustls = { version = "0.23", optional = true }
 tracing = "0.1.29"
 webpki-roots = "0.22.1"
 

src/client.rs

@@ -34,14 +34,17 @@
 //! ```
 
 use std::convert::TryInto;
+use std::io;
 use std::net::SocketAddr;
 use std::sync::Arc;
-use std::io;
 
 use tokio::io::{AsyncRead, AsyncWrite};
 use tokio::net::TcpStream;
+#[cfg(feature = "tokio-rustls")]
 use tokio_rustls::client::TlsStream;
+#[cfg(feature = "tokio-rustls")]
 use tokio_rustls::rustls::{ClientConfig, OwnedTrustAnchor, RootCertStore};
+#[cfg(feature = "tokio-rustls")]
 use tokio_rustls::TlsConnector;
 use tracing::info;
 
@@ -60,6 +63,7 @@ pub struct EppClient<IO> {
     connection: EppConnection<IO>,
 }
 
+#[cfg(feature = "tokio-rustls")]
 impl EppClient<TlsStream<TcpStream>> {
     /// Connect to the specified `addr` and `hostname` over TLS
     ///
@@ -94,10 +98,10 @@ impl EppClient<TlsStream<TcpStream>> {
             Some((certs, key)) => {
                 let certs = certs
                     .into_iter()
-                    .map(|cert| rustls::Certificate(cert.0))
+                    .map(|cert| tokio_rustls::rustls::Certificate(cert.0))
                     .collect();
                 builder
-                    .with_single_cert(certs, rustls::PrivateKey(key.0))
+                    .with_single_cert(certs, tokio_rustls::rustls::PrivateKey(key.0))
                     .map_err(|e| Error::Other(e.into()))?
             }
             None => builder.with_no_client_auth(),