tokio-xmpp: simplify examples by requiring specific TLS features

tokio-xmpp/Cargo.toml

@@ -44,15 +44,15 @@ tokio-xmpp = { path = ".", default-features = false, features = ["rustls-native-
 
 [[example]]
 name = "contact_addr"
-required-features = ["starttls"]
+required-features = ["starttls", "aws_lc_rs"]
 
 [[example]]
 name = "download_avatars"
-required-features = ["starttls"]
+required-features = ["starttls", "aws_lc_rs"]
 
 [[example]]
 name = "echo_bot"
-required-features = ["starttls"]
+required-features = ["starttls", "aws_lc_rs"]
 
 [[example]]
 name = "echo_component"
@@ -60,7 +60,7 @@ required-features = ["starttls", "insecure-tcp"]
 
 [[example]]
 name = "echo_server"
-required-features = ["starttls"]
+required-features = ["starttls", "aws_lc_rs"]
 
 [[example]]
 name = "keep_connection"

tokio-xmpp/examples/contact_addr.rs

@@ -2,7 +2,6 @@ use futures::stream::StreamExt;
 use std::env::args;
 use std::process::exit;
 use std::str::FromStr;
-#[cfg(feature = "rustls-any-backend")]
 use tokio_xmpp::rustls;
 use tokio_xmpp::{Client, IqRequest, IqResponse};
 use xmpp_parsers::{
@@ -12,26 +11,14 @@ use xmpp_parsers::{
     server_info::ServerInfo,
 };
 
-#[cfg(all(
-    feature = "rustls-any-backend",
-    not(any(feature = "aws_lc_rs", feature = "ring"))
-))]
-compile_error!("using rustls (e.g. via the ktls feature) needs an enabled rustls backend feature (either aws_lc_rs or ring).");
-
 #[tokio::main]
 async fn main() {
     env_logger::init();
 
-    #[cfg(all(feature = "aws_lc_rs", not(feature = "ring")))]
     rustls::crypto::aws_lc_rs::default_provider()
         .install_default()
         .expect("failed to install rustls crypto provider");
 
-    #[cfg(all(feature = "ring"))]
-    rustls::crypto::ring::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
     let args: Vec<String> = args().collect();
     if args.len() != 4 {
         println!("Usage: {} <jid> <password> <target>", args[0]);

tokio-xmpp/examples/download_avatars.rs

@@ -4,7 +4,6 @@ use std::fs::{create_dir_all, File};
 use std::io::{self, Write};
 use std::process::exit;
 use std::str::FromStr;
-#[cfg(feature = "rustls-any-backend")]
 use tokio_xmpp::rustls;
 use tokio_xmpp::{Client, Stanza};
 use xmpp_parsers::{
@@ -24,26 +23,14 @@ use xmpp_parsers::{
     stanza_error::{DefinedCondition, ErrorType, StanzaError},
 };
 
-#[cfg(all(
-    feature = "rustls-any-backend",
-    not(any(feature = "aws_lc_rs", feature = "ring"))
-))]
-compile_error!("using rustls (e.g. via the ktls feature) needs an enabled rustls backend feature (either aws_lc_rs or ring).");
-
 #[tokio::main]
 async fn main() {
     env_logger::init();
 
-    #[cfg(all(feature = "aws_lc_rs", not(feature = "ring")))]
     rustls::crypto::aws_lc_rs::default_provider()
         .install_default()
         .expect("failed to install rustls crypto provider");
 
-    #[cfg(all(feature = "ring"))]
-    rustls::crypto::ring::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
     let args: Vec<String> = args().collect();
     if args.len() != 3 {
         println!("Usage: {} <jid> <password>", args[0]);

tokio-xmpp/examples/echo_bot.rs

@@ -2,33 +2,20 @@ use futures::stream::StreamExt;
 use std::env::args;
 use std::process::exit;
 use std::str::FromStr;
-#[cfg(feature = "rustls-any-backend")]
 use tokio_xmpp::rustls;
 use tokio_xmpp::Client;
 use xmpp_parsers::jid::{BareJid, Jid};
 use xmpp_parsers::message::{Lang, Message, MessageType};
 use xmpp_parsers::presence::{Presence, Show as PresenceShow, Type as PresenceType};
 
-#[cfg(all(
-    feature = "rustls-any-backend",
-    not(any(feature = "aws_lc_rs", feature = "ring"))
-))]
-compile_error!("using rustls (e.g. via the ktls feature) needs an enabled rustls backend feature (either aws_lc_rs or ring).");
-
 #[tokio::main]
 async fn main() {
     env_logger::init();
 
-    #[cfg(all(feature = "aws_lc_rs", not(feature = "ring")))]
     rustls::crypto::aws_lc_rs::default_provider()
         .install_default()
         .expect("failed to install rustls crypto provider");
 
-    #[cfg(all(feature = "ring"))]
-    rustls::crypto::ring::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
     let args: Vec<String> = args().collect();
     if args.len() != 3 {
         println!("Usage: {} <jid> <password>", args[0]);

tokio-xmpp/examples/echo_component.rs

@@ -6,30 +6,12 @@ use xmpp_parsers::jid::Jid;
 use xmpp_parsers::message::{Lang, Message, MessageType};
 use xmpp_parsers::presence::{Presence, Show as PresenceShow, Type as PresenceType};
 
-#[cfg(feature = "rustls-any-backend")]
-use tokio_xmpp::rustls;
 use tokio_xmpp::{connect::DnsConfig, Component};
 
-#[cfg(all(
-    feature = "rustls-any-backend",
-    not(any(feature = "aws_lc_rs", feature = "ring"))
-))]
-compile_error!("using rustls (e.g. via the ktls feature) needs an enabled rustls backend feature (either aws_lc_rs or ring).");
-
 #[tokio::main]
 async fn main() {
     env_logger::init();
 
-    #[cfg(all(feature = "aws_lc_rs", not(feature = "ring")))]
-    rustls::crypto::aws_lc_rs::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
-    #[cfg(all(feature = "ring"))]
-    rustls::crypto::ring::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
     let args: Vec<String> = args().collect();
     if args.len() < 3 || args.len() > 4 {
         println!("Usage: {} <jid> <password> [server:port]", args[0]);

tokio-xmpp/examples/echo_server.rs

@@ -1,7 +1,6 @@
 use futures::{SinkExt, StreamExt};
 use tokio::{self, io, net::TcpSocket};
 
-#[cfg(feature = "rustls-any-backend")]
 use tokio_xmpp::rustls;
 use tokio_xmpp::{
     minidom::Element,
@@ -9,24 +8,12 @@ use tokio_xmpp::{
     xmlstream::{accept_stream, StreamHeader, Timeouts},
 };
 
-#[cfg(all(
-    feature = "rustls-any-backend",
-    not(any(feature = "aws_lc_rs", feature = "ring"))
-))]
-compile_error!("using rustls (e.g. via the ktls feature) needs an enabled rustls backend feature (either aws_lc_rs or ring).");
-
 #[tokio::main]
 async fn main() -> Result<(), io::Error> {
-    #[cfg(all(feature = "aws_lc_rs", not(feature = "ring")))]
     rustls::crypto::aws_lc_rs::default_provider()
         .install_default()
         .expect("failed to install rustls crypto provider");
 
-    #[cfg(all(feature = "ring"))]
-    rustls::crypto::ring::default_provider()
-        .install_default()
-        .expect("failed to install rustls crypto provider");
-
     // TCP socket
     let address = "127.0.0.1:5222".parse().unwrap();
     let socket = TcpSocket::new_v4()?;