From e75fa9c305dc51da8262478f0b6e3e62011ccc50 Mon Sep 17 00:00:00 2001
From: SeongChan Lee <sclee@kodebox.io>
Date: Mon, 17 Sep 2018 10:38:08 +0900
Subject: [PATCH 1/2] Add rpc net_getPort

---
 src/rpc/network.ts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/rpc/network.ts b/src/rpc/network.ts
index 67cca516..62fad66a 100644
--- a/src/rpc/network.ts
+++ b/src/rpc/network.ts
@@ -160,6 +160,27 @@ export class NetworkRpc {
         });
     }
 
+    /**
+     * Get the port
+     */
+    public getPort(): Promise<number> {
+        return new Promise((resolve, reject) => {
+            this.rpc
+                .sendRpcRequest("net_getPort", [])
+                .then(result => {
+                    if (typeof result === "number") {
+                        return resolve(result);
+                    }
+                    reject(
+                        Error(
+                            `Expected net_getPort to return a number but it returned ${result}`
+                        )
+                    );
+                })
+                .catch(reject);
+        });
+    }
+
     /**
      * Get the number of established peers
      */

From 1b9f809c3a1218be41552719f6adb1196aba7f4a Mon Sep 17 00:00:00 2001
From: SeongChan Lee <sclee@kodebox.io>
Date: Mon, 17 Sep 2018 19:29:59 +0900
Subject: [PATCH 2/2] Check port number

---
 src/rpc/network.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/rpc/network.ts b/src/rpc/network.ts
index 62fad66a..8e8f5ac6 100644
--- a/src/rpc/network.ts
+++ b/src/rpc/network.ts
@@ -168,12 +168,12 @@ export class NetworkRpc {
             this.rpc
                 .sendRpcRequest("net_getPort", [])
                 .then(result => {
-                    if (typeof result === "number") {
+                    if (isPortNumber(result)) {
                         return resolve(result);
                     }
                     reject(
                         Error(
-                            `Expected net_getPort to return a number but it returned ${result}`
+                            `Expected net_getPort to return a port number but it returned ${result}`
                         )
                     );
                 })