diff -r 0e64acbc3f8b -r 6dea1ca64992 rust/hedgewars-server/src/server/actions.rs
--- a/rust/hedgewars-server/src/server/actions.rs	Thu Apr 11 01:42:14 2019 +0300
+++ b/rust/hedgewars-server/src/server/actions.rs	Thu Apr 11 19:30:22 2019 +0300
@@ -16,18 +16,19 @@
 #[cfg(feature = "official-server")]
 use super::database;
 
-pub enum DestinationRoom {
+pub enum DestinationGroup {
     All,
     Lobby,
     Room(RoomId),
+    Protocol(u16),
 }
 
 pub enum Destination {
     ToId(ClientId),
+    ToIds(Vec<ClientId>),
     ToSelf,
     ToAll {
-        room_id: DestinationRoom,
-        protocol: Option<u16>,
+        group: DestinationGroup,
         skip_self: bool,
     },
 }
@@ -45,6 +46,13 @@
         }
     }
 
+    pub fn send_many(message: HWServerMessage, client_ids: Vec<ClientId>) -> PendingMessage {
+        PendingMessage {
+            destination: Destination::ToIds(client_ids),
+            message,
+        }
+    }
+
     pub fn send_self(message: HWServerMessage) -> PendingMessage {
         PendingMessage {
             destination: Destination::ToSelf,
@@ -54,8 +62,7 @@
 
     pub fn send_all(message: HWServerMessage) -> PendingMessage {
         let destination = Destination::ToAll {
-            room_id: DestinationRoom::All,
-            protocol: None,
+            group: DestinationGroup::All,
             skip_self: false,
         };
         PendingMessage {
@@ -65,31 +72,22 @@
     }
 
     pub fn in_room(mut self, clients_room_id: RoomId) -> PendingMessage {
-        if let Destination::ToAll {
-            ref mut room_id, ..
-        } = self.destination
-        {
-            *room_id = DestinationRoom::Room(clients_room_id)
+        if let Destination::ToAll { ref mut group, .. } = self.destination {
+            *group = DestinationGroup::Room(clients_room_id)
         }
         self
     }
 
     pub fn in_lobby(mut self) -> PendingMessage {
-        if let Destination::ToAll {
-            ref mut room_id, ..
-        } = self.destination
-        {
-            *room_id = DestinationRoom::Lobby
+        if let Destination::ToAll { ref mut group, .. } = self.destination {
+            *group = DestinationGroup::Lobby
         }
         self
     }
 
     pub fn with_protocol(mut self, protocol_number: u16) -> PendingMessage {
-        if let Destination::ToAll {
-            ref mut protocol, ..
-        } = self.destination
-        {
-            *protocol = Some(protocol_number)
+        if let Destination::ToAll { ref mut group, .. } = self.destination {
+            *group = DestinationGroup::Protocol(protocol_number)
         }
         self
     }
@@ -109,6 +107,9 @@
     pub fn send(self, client_id: ClientId) -> PendingMessage {
         PendingMessage::send(self, client_id)
     }
+    pub fn send_many(self, client_ids: Vec<ClientId>) -> PendingMessage {
+        PendingMessage::send_many(self, client_ids)
+    }
     pub fn send_self(self) -> PendingMessage {
         PendingMessage::send_self(self)
     }