support middleware(OWIN) to execute some code before recirection

[pushkaradsule]

Hi
Not sure if this is a supported and need help if you know some kind of solution, as of now fabio redirect request to another host:80, but is there any way to execute some code before reaching request to destination host , so it will help to put some kind of common code like authentication in place.

[magiconair]

What exactly are you trying to achieve?

[pushkaradsule]

I am trying to validate/decrypt JWT token and passing information in request headers to host ( where api are running)

[magiconair]

Why would that be the responsibility of the router? Fabio should know nothing about your application. It just routes requests to your services based on the information they provide.

[pushkaradsule]

I got you point, i am just thinking how this will be achieved without having to duplicating code on every service, as we have services in different languages.

[magiconair]

How would you do that in HAproxy or nginx? We have the same problem with services in Java and Go. What we have done is to factor out the actual check into a separate service so that the request handler only needs to make a simple call. Then the integration effort is low.

[pushkaradsule]

Thanks for prompt reply

[voanhduy1512]

Hi
In nginx you can do authentication [https://developers.shopware.com/blog/2015/03/02/sso-with-nginx-authrequest-module/](using auth_request module).
Right now i need to do something like this

internet -- HTTP/HTTPS --> Authentication layer -> fabio -- HTTP --> internal services

Now i need another balancer in authentication layer because they have multiple instance of authentication services.

I think it would be nice if fabio let me inject some code to run or make http call before process like nginx

[magiconair]

@voanhduy1512 In cases where we need this we have an apache in front of fabio. Again, this might be something your app need/can/should handle. The general guideline is that your app should work the same with or without the load balancer.

[voanhduy1512]

Thank you for your suggestion.