Merge branch 'joinfix' into 'next'

improvement: randomize server order for alias joins

See merge request famedly/conduit!491

src/api/client_server/alias.rs

 use crate::{services, Error, Result, Ruma};
+use rand::seq::SliceRandom;
 use regex::Regex;
 use ruma::{
     api::{
@@ -90,10 +91,10 @@ pub(crate) async fn get_alias_helper(
             )
             .await?;
 
-        return Ok(get_alias::v3::Response::new(
-            response.room_id,
-            response.servers,
-        ));
+        let mut servers = response.servers;
+        servers.shuffle(&mut rand::thread_rng());
+
+        return Ok(get_alias::v3::Response::new(response.room_id, servers));
     }
 
     let mut room_id = None;

src/api/client_server/membership.rs

@@ -112,7 +112,7 @@ pub async fn join_room_by_id_or_alias_route(
         Err(room_alias) => {
             let response = get_alias_helper(room_alias).await?;
 
-            (response.servers.into_iter().collect(), response.room_id)
+            (response.servers, response.room_id)
         }
     };