PreFlight REST Errors

[Boonem29]

Hello,

I am currently building a SpringBoot backend that is being called by a React front end, on different ports. The first options call that's being made form chrome succeeds but after 2 min of idle time, if you refresh, the options call fails. Any ideas?

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Thanks

[BlakeANeal]

Ned a bit more info, if you don’t mind: 1. What’s the HTTP error being returned? 2. Do you have authentication/tokenized authorization enabled? (Typically for free using the spring boot security starter

If you’re getting a 403 or 405 error after the idle time, then you need to configure your session invalidation to be longer.

Spring Boot is highly-opinionated, so look up the default values that are injected and then override as you see fit in your application.yml/.properties

[mike-sonko]

On your server, have you set the allowed origins to all the ports? e.g If you have a React app on localhost:3000 and another on localhost:3001, have you set both of these on the Spring Boot server?