From 15adc792b46d6d39f242d71dbc5986401c8cf3ac Mon Sep 17 00:00:00 2001
From: edvardchen <pigeon73101@gmail.com>
Date: Wed, 18 Sep 2019 18:22:51 +0800
Subject: [PATCH] fix(ges): onFinished once

---
 packages/grpc-experimental-server/src/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/grpc-experimental-server/src/index.ts b/packages/grpc-experimental-server/src/index.ts
index cad47b3..95fc570 100644
--- a/packages/grpc-experimental-server/src/index.ts
+++ b/packages/grpc-experimental-server/src/index.ts
@@ -28,7 +28,7 @@ export class Context {
   constructor(public call: ServerCall, public definition: MethodDefinition<unknown, unknown>) {}
   onFinished(listener: (err: Error | null) => void): void {
     const emitter = this.call as EventEmitter;
-    emitter.on('finish', listener).on('error', listener);
+    emitter.once('finish', listener).once('error', listener);
   }
 }