From 6a925e5179727436bf91fe60abab34ba2bfa1442 Mon Sep 17 00:00:00 2001
From: Joe Littlejohn <joelittlejohn@gmail.com>
Date: Wed, 7 Mar 2018 20:23:49 +0800
Subject: [PATCH] Add 'HS: ws upgrade unauthorized' on receiving 401

In the case that the connection cannot be established because the caller
is unauthorized, it's likely they have to do something to gain
authorization before retrying. This change introduces a new message that
can be checked for to understand more about why the connection has
failed to establish.

Closes #1200
---
 lib/client/client.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/client/client.c b/lib/client/client.c
index adb104546..ded4e4bf0 100644
--- a/lib/client/client.c
+++ b/lib/client/client.c
@@ -728,6 +728,13 @@ lws_client_interpret_server_handshake(struct lws *wsi)
 		return 0;
 	}
 
+	if (p && !strncmp(p, "401", 3)) {
+		lwsl_warn(
+		       "lws_client_handshake: got bad HTTP response '%s'\n", p);
+		cce = "HS: ws upgrade unauthorized";
+		goto bail3;
+	}
+
 	if (p && strncmp(p, "101", 3)) {
 		lwsl_warn(
 		       "lws_client_handshake: got bad HTTP response '%s'\n", p);