middleware/

middleware

Here we learn how to operate 3 kinds of middleware in server.

global-middleware

All handler will pass through.

srv.UseGlobal(middleware)

anchor-middleware

using Use and UnUse to seperate routers. In handlers below, middleware1 will make effect on handler, handler3

srv.Use("middleware-key", middleware)
srv.AddHandler(messageID, handler)

srv.UnUse("middleware-key")


srv.AddHandler(messageID2, handler2)

srv.Use("middleware-key", middleware)
srv.AddHandler(messageID3, handler3)
srv.UnUse("middleware-key")

router-middleware

only specific handler will be affected

srv.AddHandler(messageID, middleware, handler)

Order control

• Message flow passes in an order of global-middleware -> anchor-middleware -> router-middleware.
• To stop message flow, using c.Abort().
• To execute or pass to next, using c.Next().