fix tests: wait for socket to send final responses

Author: feross

lib/server/swarm.js

@@ -14,15 +14,18 @@ function Swarm (infoHash, server) {
     maxAge: server.peersCacheTtl || 20 * 60 * 1000 // 20 minutes
   })
 
-  // When a peer is evicted from the LRU cache, if it's a websocket peer,
-  // close the websocket.
+  // When a websocket peer is evicted from the LRU cache, close the websocket
+  // after a short timeout period. We wait 1s so the server has a chance to send
+  // a response to 'stopped' events, which remove the peer and cause an eviction.
   this.peers.on('evict', function (data) {
     var peer = data.value
     if (peer.socket) {
-      try {
-        peer.socket.close()
-        peer.socket = null
-      } catch (err) {}
+      setTimeout(function () {
+        try {
+          peer.socket.close()
+          peer.socket = null
+        } catch (err) {}
+      }, 1000)
     }
   })
 }