Configuring REST Channels for CORS in Zato

Configuring REST Channels for CORS in Zato

Configuring REST Channels for CORS in Zato. See how you can configure REST endpoints for CORS using Zato.

See how you can configure REST endpoints for CORS using Zato.

With the rise of Single-Page Applications (SPA) in web frontends, it is often the case that backend REST APIs based on  Zato need to be configured for CORS. This article will explore what CORS is and how to make Zato participate in scenarios using it.

REST channel web-admin menu

Terminology

CORS, as an acronym, has several parts:

  • Cross-Origin
  • Resource
  • Sharing

In the context of REST APIs, which predominantly means JSON or XML served usually with POST or other calls, this can be simplified to the below.

Origin means a combination of a URL scheme, hostname, and port number. For instance,  https://example.com is one origin whereas  https://example.com:8443 is a different one (ports differ). Similarly,  https://www.example.net is different than  https://api.example.net (subdomains differ). Also, http:// vs. https:// is a different URL scheme and that means a different origin too, even if domains and ports were the same.

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