From 52f686b9db28db3028c0c3277b8a9be58a134967 Mon Sep 17 00:00:00 2001
From: Alessandro Vergani <alessandro.vergani@gmail.com>
Date: Tue, 17 Oct 2017 18:16:06 +0200
Subject: [PATCH] Add lookup to dgram SocketOptions (#20636)

---
 types/node/index.d.ts    | 2 ++
 types/node/node-tests.ts | 1 +
 2 files changed, 3 insertions(+)

diff --git a/types/node/index.d.ts b/types/node/index.d.ts
index 2f9834e411..421803080d 100644
--- a/types/node/index.d.ts
+++ b/types/node/index.d.ts
@@ -2657,6 +2657,7 @@ declare module "net" {
 
 declare module "dgram" {
     import * as events from "events";
+    import * as dns from "dns";
 
     interface RemoteInfo {
         address: string;
@@ -2683,6 +2684,7 @@ declare module "dgram" {
         reuseAddr?: boolean;
         recvBufferSize?: number;
         sendBufferSize?: number;
+        lookup?: (hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException, address: string, family: number) => void) => void;
     }
 
     export function createSocket(type: SocketType, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
diff --git a/types/node/node-tests.ts b/types/node/node-tests.ts
index 5929a0c08a..9c6ca8d4d4 100644
--- a/types/node/node-tests.ts
+++ b/types/node/node-tests.ts
@@ -1375,6 +1375,7 @@ namespace dgram_tests {
         });
         ds.send(new Buffer("hello"), 5000, "127.0.0.1");
         ds.setMulticastInterface("127.0.0.1");
+        ds = dgram.createSocket({ type: "udp4", reuseAddr: true, recvBufferSize: 1000, sendBufferSize: 1000, lookup: dns.lookup });
     }
 
     {