From 04102867ddde5c28a5602732244e815acc1e6b0f Mon Sep 17 00:00:00 2001
From: fakeshadow <24548779@qq.com>
Date: Mon, 12 Apr 2021 17:17:53 +0800
Subject: [PATCH] add tokio runtime check when enabling signal handling

---
 actix-server/src/server.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/actix-server/src/server.rs b/actix-server/src/server.rs
index ba569430..d7987d56 100644
--- a/actix-server/src/server.rs
+++ b/actix-server/src/server.rs
@@ -58,6 +58,10 @@ impl Server {
 
         // construct signals future.
         let signals = if !builder.no_signals {
+            // Check tokio runtime.
+            tokio::runtime::Handle::try_current()
+                .map(|_|())
+                .expect("there is no reactor running. Please enable ServerBuilder::disable_signals when start server in non tokio 1.x runtime.");
             Some(Signals::new())
         } else {
             None