From 5c5f137df7b028017308b5f9d7431bcfa65ab995 Mon Sep 17 00:00:00 2001
From: Emanuel Bennici <eb@fabmation.de>
Date: Mon, 27 Apr 2020 13:56:54 +0200
Subject: [PATCH] Use custom 'Content-Type' header if user has set it

Let the user set `Content-Type` header.
---
 types/services/routine.go | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/types/services/routine.go b/types/services/routine.go
index 871e7484..17f395b7 100644
--- a/types/services/routine.go
+++ b/types/services/routine.go
@@ -224,14 +224,24 @@ func CheckHttp(s *Service, record bool) *Service {
 	timeout := time.Duration(s.Timeout) * time.Second
 	var content []byte
 	var res *http.Response
-	var cnx string
 	var data *bytes.Buffer
 	var headers []string
+	contentType := "application/json" // default Content-Type
 
 	if s.Headers.Valid {
 		headers = strings.Split(s.Headers.String, ",")
 	} else {
 		headers = nil
+		log.Warnf("Custom set Headers are not valid for Server '%s'!\n",
+			s.Name)
+	}
+
+	// check if 'Content-Type' header was defined
+	for _, header := range headers {
+		if strings.Split(header, "=")[0] == "Content-Type" {
+			contentType = strings.Split(header, "=")[1]
+			break
+		}
 	}
 
 	if s.Redirect.Bool {
@@ -244,11 +254,14 @@ func CheckHttp(s *Service, record bool) *Service {
 		data = bytes.NewBuffer(nil)
 	}
 
-	if s.Method == "POST" {
-		cnx = "application/json"
+	// force set Content-Type to 'application/json' if requests are made
+	// with POST method
+	if s.Method == "POST" && contentType != "application/json" {
+		contentType = "application/json"
 	}
 
-	content, res, err = utils.HttpRequest(s.Domain, s.Method, cnx, headers, data, timeout, s.VerifySSL.Bool)
+	content, res, err = utils.HttpRequest(s.Domain, s.Method, contentType,
+		headers, data, timeout, s.VerifySSL.Bool)
 	if err != nil {
 		if record {
 			recordFailure(s, fmt.Sprintf("HTTP Error %v", err))