From 978a8a83f019ad369e18c063685001709dbde601 Mon Sep 17 00:00:00 2001
From: Johan Fleury <jfleury@arcaik.net>
Date: Fri, 8 Oct 2021 11:34:05 -0400
Subject: [PATCH] Add support for setting server_name as query parameter

---
 ssl_exporter.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ssl_exporter.go b/ssl_exporter.go
index 2051c536..6a30b680 100644
--- a/ssl_exporter.go
+++ b/ssl_exporter.go
@@ -35,6 +35,12 @@ func probeHandler(logger log.Logger, w http.ResponseWriter, r *http.Request, con
 		return
 	}
 
+	if serverName := r.URL.Query().Get("server_name"); serverName != "" {
+		level.Debug(logger).Log("msg", fmt.Sprintf("Using %s as server name", serverName))
+		logger = log.With(logger, "server_name", serverName)
+		module.TLSConfig.ServerName = serverName
+	}
+
 	timeout := module.Timeout
 	if timeout == 0 {
 		// The following timeout block was taken wholly from the blackbox exporter