Remove Content-Type forwarding from Request

Signed-off-by: Eric Stoekl <ems5311@gmail.com>

gateway/handlers/proxy.go

@@ -160,10 +160,6 @@ func invokeService(w http.ResponseWriter, r *http.Request, metrics metrics.Metri
 	clientHeader := w.Header()
 	copyHeaders(&clientHeader, &response.Header)
 
-	defaultHeader := "text/plain"
-
-	w.Header().Set("Content-Type", GetContentType(response.Header, r.Header, defaultHeader))
-
 	writeHead(service, metrics, response.StatusCode, w)
 
 	if response.Body != nil {
@@ -171,23 +167,6 @@ func invokeService(w http.ResponseWriter, r *http.Request, metrics metrics.Metri
 	}
 }
 
-// GetContentType resolves the correct Content-Tyoe for a proxied function
-func GetContentType(request http.Header, proxyResponse http.Header, defaultValue string) string {
-	responseHeader := proxyResponse.Get("Content-Type")
-	requestHeader := request.Get("Content-Type")
-
-	var headerContentType string
-	if len(responseHeader) > 0 {
-		headerContentType = responseHeader
-	} else if len(requestHeader) > 0 {
-		headerContentType = requestHeader
-	} else {
-		headerContentType = defaultValue
-	}
-
-	return headerContentType
-}
-
 func copyHeaders(destination *http.Header, source *http.Header) {
 	for k, v := range *source {
 		vClone := make([]string, len(v))

gateway/tests/proxy_test.go

-package tests
-
-import (
-	"net/http"
-	"testing"
-
-	"github.com/openfaas/faas/gateway/handlers"
-)
-
-func Test_GetContentType_UsesResponseValue(t *testing.T) {
-	request := http.Header{}
-	request.Add("Content-Type", "text/plain")
-	response := http.Header{}
-	response.Add("Content-Type", "text/html")
-
-	contentType := handlers.GetContentType(request, response, "default")
-	if contentType != response.Get("Content-Type") {
-		t.Errorf("Got: %s, want: %s", contentType, response.Get("Content-Type"))
-	}
-}
-
-func Test_GetContentType_UsesRequest_WhenResponseEmpty(t *testing.T) {
-	request := http.Header{}
-	request.Add("Content-Type", "text/plain")
-	response := http.Header{}
-	response.Add("Content-Type", "")
-
-	contentType := handlers.GetContentType(request, response, "default")
-	if contentType != request.Get("Content-Type") {
-		t.Errorf("Got: %s, want: %s", contentType, request.Get("Content-Type"))
-	}
-}
-
-func Test_GetContentType_UsesDefaultWhenRequestResponseEmpty(t *testing.T) {
-	request := http.Header{}
-	request.Add("Content-Type", "")
-	response := http.Header{}
-	response.Add("Content-Type", "")
-
-	contentType := handlers.GetContentType(request, response, "default")
-	if contentType != "default" {
-		t.Errorf("Got: %s, want: %s", contentType, "default")
-	}
-}