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lib/httpserver: add -http.disableResponseCompression flag, which may help saving CPU resources at the cost of higher network bandwidth usage

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This commit is contained in:
Aliaksandr Valialkin 2019-05-24 12:18:40 +03:00
parent d15d0127fe
commit 08b889ef09
1 changed files with 7 additions and 0 deletions
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7
lib/httpserver/httpserver.go
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@ -31,6 +31,8 @@ var (
httpAuthPassword = flag.String("httpAuth.password", "", "Password for HTTP Basic Auth. The authentication is disabled -httpAuth.username is empty")
metricsAuthKey = flag.String("metricsAuthKey", "", "Auth key for /metrics. It overrides httpAuth settings")
pprofAuthKey = flag.String("pprofAuthKey", "", "Auth key for /debug/pprof. It overrides httpAuth settings")
disableResponseCompression = flag.Bool("http.disableResponseCompression", false, "Disable compression of HTTP responses for saving CPU resources. By default compression is enabled to save network bandwidth")
)
var (
@ -51,6 +53,8 @@ type RequestHandler func(w http.ResponseWriter, r *http.Request) bool
// By default all the responses are transparently compressed, since Google
// charges a lot for the egress traffic. The compression may be disabled
// by calling DisableResponseCompression before writing the first byte to w.
//
// The compression is also disabled if -http.disableResponseCompression flag is set.
func Serve(addr string, rh RequestHandler) {
scheme := "http"
if *tlsEnable {
@ -224,6 +228,9 @@ func checkBasicAuth(w http.ResponseWriter, r *http.Request) bool {
}
func maybeGzipResponseWriter(w http.ResponseWriter, r *http.Request) http.ResponseWriter {
if *disableResponseCompression {
return w
}
ae := r.Header.Get("Accept-Encoding")
if ae == "" {
return w