From 31ed146a959ec7602b82e8573abe540cba4461df Mon Sep 17 00:00:00 2001
From: Juliusz Chroboczek <jch@irif.fr>
Date: Sun, 9 Oct 2022 12:37:13 +0200
Subject: [PATCH] Fix computation of group URL in webserver.

We were computing the scheme incorrectly, which caused us
to compute the wrong websocket URL when -insecure is set.
Thanks to Fabien de Montgolfier.
---
 webserver/webserver.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/webserver/webserver.go b/webserver/webserver.go
index b3dd5ee..d06a0bb 100644
--- a/webserver/webserver.go
+++ b/webserver/webserver.go
@@ -333,8 +333,12 @@ func groupHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func groupBase(r *http.Request) string {
+	scheme := "https"
+	if r.TLS == nil {
+		scheme = "http"
+	}
 	base := url.URL{
-		Scheme: r.URL.Scheme,
+		Scheme: scheme,
 		Host:   r.Host,
 		Path:   "/group/",
 	}