Styjun

I have the following middleware, first sets currentUser in gorilla/context to current user acquired from database, and the second checks if currentUser exists and redirects otherwise:

package main

import (
 "database/sql"
 "github.com/gorilla/context"
 "log"
 "net/http"
 "server/helpers"
)

func withCurrentUser(db *sql.DB, next http.Handler) http.Handler 
 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) 
 userId := helpers.GetCurrentUserId(db, r)

 if userId == nil 
 next.ServeHTTP(w, r)
 return
 

 row := db.QueryRow("SELECT username FROM User WHERE id=?", userId)
 var username string

 switch err := row.Scan(&username); err 
 case sql.ErrNoRows:
 next.ServeHTTP(w, r)
 return
 case nil:
 user := helpers.UserUserId: *userId, LoggedIn: true, Username: username
 context.Set(r, "currentUser", user)
 default:
 log.Fatal(err)
 

 next.ServeHTTP(w, r)
 )


func loginRequired(next http.Handler) http.Handler 
 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) 
 user, ok := context.Get(r, "currentUser").(helpers.User)
 log.Println(user, ok)
 if !ok 
 http.Redirect(w, r, "/login", 301)
 return
 
 next.ServeHTTP(w, r)
 )

Then when I register a route that requires authenticated user, I do the following:

router.Handle("/create_post",
 withCurrentUser(db, loginRequired(http.HandlerFunc(createPostGet))),
 ).Methods(http.MethodGet)

Where createPostGet:

func createPostGet(w http.ResponseWriter, r *http.Request) 
 tmpl := template.Must(template.ParseFiles("templates/createPost.html"))
 user := context.Get(r, "currentUser").(helpers.User)
 _ = tmpl.Execute(w, helpers.FormStructCurrentUser: user)

My problem is: even if user is authenticated and context is populated correctly, this route always redirects to login. I tried setting breakpoints inside loginRequired and adding log.Println (as you can see in code), and that function doesn't seem to be even called (no breakpoints stop, no log output, too).

What's happening and how to make sure loginRequired is called every time and checks context properly?

UPD: It doesn't seem to persist, I recompiled the app a few times and now it's working. Anyway, what might be the reason for such behavior (I'm positive I saved everything the first time).

UPD 2: I found out that the problem is connected to browser caching, but I still have no idea why it happens. When I disable browser caching, everything works and function is called every time, but while browser cache is enabled, the function isn't called at all. Any ideas?

OMG, that was stupid. I was using 301 redirect code in loginRequired, so redirect was permanent and browser didn't even make requests.