Always set Content-Length for normal responses

httpbin/handlers.go

@@ -87,7 +87,6 @@ func (h *HTTPBin) Gzip(w http.ResponseWriter, r *http.Request) {
 	gzBody := buf.Bytes()
 
 	w.Header().Set("Content-Encoding", "gzip")
-	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(gzBody)))
 	writeJSON(w, gzBody, http.StatusOK)
 }
 
@@ -108,7 +107,6 @@ func (h *HTTPBin) Deflate(w http.ResponseWriter, r *http.Request) {
 	compressedBody := buf.Bytes()
 
 	w.Header().Set("Content-Encoding", "deflate")
-	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(compressedBody)))
 	writeJSON(w, compressedBody, http.StatusOK)
 }
 

httpbin/helpers.go

@@ -2,6 +2,7 @@ package httpbin
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"net/http"
 	"net/url"
@@ -48,6 +49,7 @@ func getURL(r *http.Request) *url.URL {
 
 func writeJSON(w http.ResponseWriter, body []byte, status int) {
 	w.Header().Set("Content-Type", jsonContentType)
+	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(body)))
 	w.WriteHeader(status)
 	w.Write(body)
 }