From ea4a5a4c578ea95d3c43a0797a3b891d7d357f8b Mon Sep 17 00:00:00 2001
From: Sebastian Malton <sebastian@malton.name>
Date: Thu, 15 Jul 2021 14:19:33 -0400
Subject: [PATCH] getPortFrom should log the lines it retrived if it fails to
 get a port (#3395)

---
 src/main/utils/get-port.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/utils/get-port.ts b/src/main/utils/get-port.ts
index cdce0ce740..c44e843712 100644
--- a/src/main/utils/get-port.ts
+++ b/src/main/utils/get-port.ts
@@ -21,6 +21,7 @@
 
 import type { Readable } from "stream";
 import URLParse from "url-parse";
+import logger from "../logger";
 
 interface GetPortArgs {
   /**
@@ -47,11 +48,15 @@ interface GetPortArgs {
  * @returns A Promise for port number
  */
 export function getPortFrom(stream: Readable, args: GetPortArgs): Promise<number> {
+  const logLines: string[] = [];
+
   return new Promise<number>((resolve, reject) => {
     const handler = (data: any) => {
       const logItem: string = data.toString();
       const match = logItem.match(args.lineRegex);
 
+      logLines.push(logItem);
+
       if (match) {
         // use unknown protocol so that there is no default port
         const addr = new URLParse(`s://${match.groups.address.trim()}`);
@@ -64,6 +69,7 @@ export function getPortFrom(stream: Readable, args: GetPortArgs): Promise<number
     };
     const timeoutID = setTimeout(() => {
       stream.off("data", handler);
+      logger.warn(`[getPortFrom]: failed to retrieve port via ${args.lineRegex.toString()}: ${logLines}`);
       reject(new Error("failed to retrieve port from stream"));
     }, args.timeout ?? 5000);