common: resolve ping addresses with async DNS

The previous std::net::ToSocketAddrs call blocked the runtime during
DNS lookup. This change allows the server ping status to be resolved
asynchronously.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

client/src/lib.rs

@@ -9,3 +9,5 @@ pub use imp::*;
 pub use mainloop::*;
 pub use mime_guess;
 pub use reqwest;
+
+pub const VERSION: Option<&str> = option_env!("MUMBLE_WEB2_VERSION");

common/src/lib.rs

@@ -25,12 +25,11 @@ pub struct ServerStatus {
 #[cfg(feature = "networking")]
 pub async fn ping_server(address: &str, port: u16) -> color_eyre::Result<ServerStatus> {
     use color_eyre::eyre::{bail, eyre};
-    use std::net::ToSocketAddrs;
     use std::time::Duration;
-    use tokio::net::UdpSocket;
+    use tokio::net::{lookup_host, UdpSocket};
 
-    let dest = format!("{}:{}", address, port)
+    let dest = lookup_host(format!("{}:{}", address, port))
-        .to_socket_addrs()?
+        .await?
         .next()
         .ok_or_else(|| eyre!("could not resolve address"))?;
 

gui/src/main.rs

@@ -4,7 +4,7 @@ use dioxus::prelude::*;
 use mumble_web2_client::{
     network_entrypoint, reqwest, AudioSettings, ChannelId, Command, ConfigSystem,
     ConfigSystemInterface as _, ConnectionState, Platform, PlatformInterface as _, ServerState,
-    SharedState, State, UserId, UserState,
+    SharedState, State, UserId, UserState, VERSION,
 };
 use mumble_web2_common::{ProxyOverrides, ServerStatus};
 use std::collections::{HashMap, HashSet};
@@ -575,13 +575,12 @@ pub fn LoginView(overrides: Resource<ProxyOverrides>) -> Element {
         ),
         Connected => unreachable!(),
     };
-    let version = option_env!("MUMBLE_WEB2_VERSION");
     rsx!(
         div {
             class: "login",
             h1 {
                 "Mumble Web"
-                match version {
+                match VERSION {
                     Some(v) => rsx!(" " span { class: "login_version", "({v})" }),
                     None => rsx!(),
                 }