From 02028bf8bef50eded6864067d001a1ae282f45be Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Mon, 13 Feb 2017 13:08:28 +0100
Subject: [PATCH] fix panic when there is no available handler

---
 app/proxyman/inbound/always.go  | 3 +++
 app/proxyman/inbound/dynamic.go | 3 +++
 proxy/vmess/inbound/inbound.go  | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/proxyman/inbound/always.go b/app/proxyman/inbound/always.go
index f2826c85e..92b8c7626 100644
--- a/app/proxyman/inbound/always.go
+++ b/app/proxyman/inbound/always.go
@@ -80,6 +80,9 @@ func (h *AlwaysOnInboundHandler) Close() {
 }
 
 func (h *AlwaysOnInboundHandler) GetRandomInboundProxy() (proxy.Inbound, net.Port, int) {
+	if len(h.workers) == 0 {
+		return nil, 0, 0
+	}
 	w := h.workers[dice.Roll(len(h.workers))]
 	return w.Proxy(), w.Port(), 9999
 }
diff --git a/app/proxyman/inbound/dynamic.go b/app/proxyman/inbound/dynamic.go
index 2c9469ce0..34b47f1b9 100644
--- a/app/proxyman/inbound/dynamic.go
+++ b/app/proxyman/inbound/dynamic.go
@@ -163,6 +163,9 @@ func (h *DynamicInboundHandler) GetRandomInboundProxy() (proxy.Inbound, v2net.Po
 	h.workerMutex.RLock()
 	defer h.workerMutex.RUnlock()
 
+	if len(h.worker) == 0 {
+		return nil, 0, 0
+	}
 	w := h.worker[dice.Roll(len(h.worker))]
 	expire := h.receiverConfig.AllocationStrategy.GetRefreshValue() - uint32(time.Since(h.lastRefresh)/time.Minute)
 	return w.Proxy(), w.Port(), int(expire)
diff --git a/proxy/vmess/inbound/inbound.go b/proxy/vmess/inbound/inbound.go
index ac8337eb2..7ba17685d 100644
--- a/proxy/vmess/inbound/inbound.go
+++ b/proxy/vmess/inbound/inbound.go
@@ -252,7 +252,7 @@ func (v *VMessInboundHandler) generateCommand(ctx context.Context, request *prot
 			}
 			proxyHandler, port, availableMin := handler.GetRandomInboundProxy()
 			inboundHandler, ok := proxyHandler.(*VMessInboundHandler)
-			if ok {
+			if ok && inboundHandler != nil {
 				if availableMin > 255 {
 					availableMin = 255
 				}