From 3f5cbf2bcd5b9645b0d3a0eac4d82449a004859d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=AD=A6=E6=96=B0=E9=A3=9E?= <xinfei.wu@qq.com>
Date: Wed, 19 Dec 2018 17:56:52 +0800
Subject: [PATCH] fix: Deregister subscribers

---
 http.go | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/http.go b/http.go
index 3469c4d..de40ed3 100644
--- a/http.go
+++ b/http.go
@@ -189,7 +189,20 @@ func (h *httpServer) Deregister() error {
 	log.Logf("Deregistering node: %s", opts.Name+"-"+opts.Id)
 
 	service := serviceDef(opts)
-	return opts.Registry.Deregister(service)
+	if err := opts.Registry.Deregister(service); err != nil {
+		return err
+	}
+
+	h.Lock()
+	for sb, subs := range h.subscribers {
+		for _, sub := range subs {
+			log.Logf("Unsubscribing from topic: %s", sub.Topic())
+			sub.Unsubscribe()
+		}
+		h.subscribers[sb] = nil
+	}
+	h.Unlock()
+	return nil
 }
 
 func (h *httpServer) Start() error {