From: Michael Stapelberg <stapelberg@google.com>
Date: Tue, 24 Nov 2015 17:10:48 +0000 (+0100)
Subject: http: abort probing when request could not be created
X-Git-Url: https://vcs.fsf.org/?a=commitdiff_plain;h=c085629405b05e6f4bfbc385fb3e1831a0f54da9;p=blackbox_exporter.git

http: abort probing when request could not be created

As per https://play.golang.org/p/4keb0zznDB, passing a nil http.Request
to Client.Do() results in a runtime error.
---

diff --git a/http.go b/http.go
index 0d1c279..52ccfd4 100644
--- a/http.go
+++ b/http.go
@@ -48,6 +48,7 @@ func probeHTTP(target string, w http.ResponseWriter, module Module) (success boo
 	request, err := http.NewRequest(config.Method, target, nil)
 	if err != nil {
 		log.Errorf("Error creating request for target %s: %s", target, err)
+		return
 	}
 
 	resp, err := client.Do(request)