From ab485dd55c3d4a39242b8233003e89e2f2656836 Mon Sep 17 00:00:00 2001
From: Sorin Davidoi <sorin.davidoi@protonmail.com>
Date: Sun, 25 Nov 2018 17:48:10 +0000
Subject: [PATCH] fix(log): Handle case when error code is missing (#303)

# Before
```
HPM] Error occurred while trying to proxy request <redacted> from <redacted> to <redacted> (undefined) (https://nodejs.org/api/errors.html#errors_common_system_errors)
```

# After
```
[HPM] Error occurred while trying to proxy request <redacted> from <redacted> to <redacted> (Error: Hostname/IP doesn't match certificate's altnames: "Host: <redacted>. is not in the cert's altnames: DNS:<redacted>, DNS:<redacted>") (https://nodejs.org/api/errors.html#errors_common_system_errors)
```
---
 lib/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/index.js b/lib/index.js
index 88bc3ef1..fa384756 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -147,6 +147,6 @@ function HttpProxyMiddleware (context, opts) {
     var errorMessage = '[HPM] Error occurred while trying to proxy request %s from %s to %s (%s) (%s)'
     var errReference = 'https://nodejs.org/api/errors.html#errors_common_system_errors' // link to Node Common Systems Errors page
 
-    logger.error(errorMessage, req.url, hostname, target, err.code, errReference)
+    logger.error(errorMessage, req.url, hostname, target, err.code || err, errReference)
   }
 }