Are different ports on the same server considered cross-domain? (Ajax-wise)

StackOverflow https://stackoverflow.com/questions/1077218

  •  21-08-2019
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Question

Can XMLHttpRequest send a request to http:// mydomain.com:81/ from http:// mydomain.com/ ?

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Solution

For two documents to be considered to have the same origin, the protocol (http/https), the domain and the port (the default 80 or :xx) have to be indentical. So no, you cannot use xhr against a different port.

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