Merge pull request #2157 from mattermost/ie-cache-fix

Fixing IE expire issue

api/admin.go

@@ -121,7 +121,6 @@ func getConfig(c *Context, w http.ResponseWriter, r *http.Request) {
 	json = cfg.ToJson()
 
 	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
-	w.Header().Set("Expires", "0")
 	w.Write([]byte(json))
 }
 

api/channel.go

@@ -729,7 +729,6 @@ func getChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 			return
 		} else {
 			w.Header().Set(model.HEADER_ETAG_SERVER, data.Etag())
-			w.Header().Set("Expires", "-1")
 			w.Write([]byte(data.ToJson()))
 		}
 	}
@@ -798,7 +797,6 @@ func getChannelExtraInfo(c *Context, w http.ResponseWriter, r *http.Request) {
 
 		data := model.ChannelExtra{Id: channel.Id, Members: extraMembers, MemberCount: memberCount}
 		w.Header().Set(model.HEADER_ETAG_SERVER, extraEtag)
-		w.Header().Set("Expires", "-1")
 		w.Write([]byte(data.ToJson()))
 	}
 }

api/context.go

@@ -165,6 +165,10 @@ func (h handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	} else {
 		// All api response bodies will be JSON formatted by default
 		w.Header().Set("Content-Type", "application/json")
+
+		if r.Method == "GET" {
+			w.Header().Set("Expires", "0")
+		}
 	}
 
 	if len(token) != 0 {

api/post.go

@@ -1197,6 +1197,5 @@ func searchPosts(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
-	w.Header().Set("Expires", "0")
 	w.Write([]byte(posts.ToJson()))
 }

api/team.go

@@ -647,7 +647,6 @@ func getMyTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	} else {
 		w.Header().Set(model.HEADER_ETAG_SERVER, result.Data.(*model.Team).Etag())
-		w.Header().Set("Expires", "-1")
 		w.Write([]byte(result.Data.(*model.Team).ToJson()))
 		return
 	}

api/user.go

@@ -897,7 +897,6 @@ func getMe(c *Context, w http.ResponseWriter, r *http.Request) {
 	} else {
 		result.Data.(*model.User).Sanitize(map[string]bool{})
 		w.Header().Set(model.HEADER_ETAG_SERVER, result.Data.(*model.User).Etag())
-		w.Header().Set("Expires", "-1")
 		w.Write([]byte(result.Data.(*model.User).ToJson()))
 		return
 	}