[MM-45309] Replace github.com/mattermost/gziphandler with github.com/klauspost/compress/gzhttp (#24293)

server/channels/web/handlers.go

@@ -14,12 +14,11 @@ import (
 	"strings"
 	"time"
 
+	"github.com/klauspost/compress/gzhttp"
 	"github.com/opentracing/opentracing-go"
 	"github.com/opentracing/opentracing-go/ext"
 	spanlog "github.com/opentracing/opentracing-go/log"
 
-	"github.com/mattermost/gziphandler"
-
 	"github.com/mattermost/mattermost/server/public/model"
 	"github.com/mattermost/mattermost/server/public/shared/i18n"
 	"github.com/mattermost/mattermost/server/public/shared/mlog"
@@ -474,7 +473,7 @@ func (w *Web) APIHandler(h func(*Context, http.ResponseWriter, *http.Request)) h
 		IsLocal:        false,
 	}
 	if *w.srv.Config().ServiceSettings.WebserverMode == "gzip" {
-		return gziphandler.GzipHandler(handler)
+		return gzhttp.GzipHandler(handler)
 	}
 	return handler
 }
@@ -494,7 +493,7 @@ func (w *Web) APIHandlerTrustRequester(h func(*Context, http.ResponseWriter, *ht
 		IsLocal:        false,
 	}
 	if *w.srv.Config().ServiceSettings.WebserverMode == "gzip" {
-		return gziphandler.GzipHandler(handler)
+		return gzhttp.GzipHandler(handler)
 	}
 	return handler
 }
@@ -513,7 +512,7 @@ func (w *Web) APISessionRequired(h func(*Context, http.ResponseWriter, *http.Req
 		IsLocal:        false,
 	}
 	if *w.srv.Config().ServiceSettings.WebserverMode == "gzip" {
-		return gziphandler.GzipHandler(handler)
+		return gzhttp.GzipHandler(handler)
 	}
 	return handler
 }

server/channels/web/static.go

@@ -13,7 +13,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/mattermost/gziphandler"
+	"github.com/klauspost/compress/gzhttp"
 
 	"github.com/mattermost/mattermost/server/public/model"
 	"github.com/mattermost/mattermost/server/public/shared/mlog"
@@ -39,8 +39,8 @@ func (w *Web) InitStatic() {
 		pluginHandler := staticFilesHandler(http.StripPrefix(path.Join(subpath, "static", "plugins"), http.FileServer(http.Dir(*w.srv.Config().PluginSettings.ClientDirectory))))
 
 		if *w.srv.Config().ServiceSettings.WebserverMode == "gzip" {
-			staticHandler = gziphandler.GzipHandler(staticHandler)
-			pluginHandler = gziphandler.GzipHandler(pluginHandler)
+			staticHandler = gzhttp.GzipHandler(staticHandler)
+			pluginHandler = gzhttp.GzipHandler(pluginHandler)
 		}
 
 		w.MainRouter.PathPrefix("/static/plugins/").Handler(pluginHandler)