I am currently implementing WOPI in my project using JAVA and JS. My host page is working now. I used the code from https://github.com/ethendev/wopihost.
But now I am facing the problem with action URL currently I am using https://word-view.officeapps.live.com/wv/wordviewerframe.aspx?WOPISrc=MyFileURL&access_token=DASDASAS for word files. This URL always returns server unavailable.
Is there any possibility to use my URL instead of above mentioned? My current server is UBUNTU 16.04.
Or can anyone please explain what is WOPI action URL? How to create one for my implementation in JAVA and JSP?