thread: remote subscriptions working

Signed-off-by: William Casarin <jb55@jb55.com>

enostr/src/relay/pool.rs

@@ -72,6 +72,12 @@ impl RelayPool {
         }
     }
 
+    pub fn unsubscribe(&mut self, subid: String) {
+        for relay in &mut self.relays {
+            relay.relay.send(&ClientMessage::close(subid.clone()));
+        }
+    }
+
     pub fn subscribe(&mut self, subid: String, filter: Vec<Filter>) {
         for relay in &mut self.relays {
             relay.relay.subscribe(subid.clone(), filter.clone());