I have developed MS WOPI that works on the browser, that is, we can view and edit documents stored in the database, in the browser. But I am unable to open the documents in MS Word desktop application. I found in some answers here that we need to set the ClientUrl field of CheckFileInfo endpoint using WebDav.
I have no knowledge of WebDav, I tried to find more about it on the net but not able to fully understand it.
Just want to know what is the general format of the WebDav link for a specific file that we need to set in ClientUrl after we have set up a WebDav?
Is it something like this https://serverAddressLockToken/FileName.ext
The format of the WebDAV URL is not really important. A specific format of a URL won't make WebDAV work by itself. You need to implement a WebDAV server that will serve your files to client apps and will also define the format of accepted URLs.
WebDAV, similarly to WOPI, is quite a complex protocol and if you don't want to implement it from zero, I recommend using one of the available solutions, e.g. ITHit's WebDAV Server.
There are also Office URIs that might pose an acceptable alternative for you. Check out my other answer here.