move sessions and websocket examples, gofmt, fix misspells and experimental optimizations 🍐

Former-commit-id: cae4f94bbd404d26ab13dade02b52f81feaddf24

_examples/sessions/overview/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"github.com/kataras/iris"
+	"github.com/kataras/iris/context"
+
+	"github.com/kataras/iris/sessions"
+)
+
+var (
+	cookieNameForSessionID = "mycookiesessionnameid"
+	sess                   = sessions.New(sessions.Config{Cookie: cookieNameForSessionID})
+)
+
+func secret(ctx context.Context) {
+
+	// Check if user is authenticated
+	if auth, _ := sess.Start(ctx).GetBoolean("authenticated"); !auth {
+		ctx.StatusCode(iris.StatusForbidden)
+		return
+	}
+
+	// Print secret message
+	ctx.WriteString("The cake is a lie!")
+}
+
+func login(ctx context.Context) {
+	session := sess.Start(ctx)
+
+	// Authentication goes here
+	// ...
+
+	// Set user as authenticated
+	session.Set("authenticated", true)
+}
+
+func logout(ctx context.Context) {
+	session := sess.Start(ctx)
+
+	// Revoke users authentication
+	session.Set("authenticated", false)
+}
+
+func main() {
+	app := iris.New()
+
+	app.Get("/secret", secret)
+	app.Get("/login", login)
+	app.Get("/logout", logout)
+
+	app.Run(iris.Addr(":8080"))
+}