Remove redundant code

tcp_relay_server/src/tls_cert_client_verifier.rs

@@ -1,11 +1,10 @@
-use std::fs::File;
-use std::io::BufReader;
 use std::sync::Arc;
 use std::time::SystemTime;
 
 use rustls::server::{AllowAnyAuthenticatedClient, ClientCertVerified, ClientCertVerifier};
 use rustls::{Certificate, DistinguishedNames, Error, RootCertStore};
-use rustls_pemfile::certs;
+
+use base::cert_utils::parse_pem_certificates;
 
 use crate::server_config::ServerConfig;
 
@@ -19,16 +18,11 @@ impl CustomCertClientVerifier {
             .tls_client_auth_root_cert
             .as_deref()
             .expect("No root certificates for client authentication provided!");
-        let cert_file = &mut BufReader::new(
-            File::open(cert_path)
-                .expect("Failed to read root certificates for client authentication!"),
-        );
+        let cert_file = std::fs::read(cert_path)
+            .expect("Failed to read root certificates for client authentication!");
 
-        let root_certs = certs(cert_file)
-            .unwrap()
-            .into_iter()
-            .map(Certificate)
-            .collect::<Vec<_>>();
+        let root_certs = parse_pem_certificates(&cert_file)
+            .expect("Failed to read root certificates for server authentication!");
 
         if root_certs.is_empty() {
             log::error!("No certificates found for client authentication!");