Understanding how session check parameters work

[sagivoulu]

I am using lua resty session in an api gateway I am implementing, & I want to include some security features that will block a user from stealing another users session.
I found in the documentation these fields that seem to do what I want:

• session.check.ssi
• session.check.ua
• session.check.addr
• session.check.schema
  But I am not quite sure how do they work... I couldn't find any segment in the lua-resty-session code that validates the request with these checks...

Can someone explain to me how & where does lua-resty-session actually check that the request came from the same ssl session / user agent / client address / schema?

And what happens if a request does not match one of these parameters?

[bungle]

https://github.com/bungle/lua-resty-session/blob/master/lib/resty/session.lua#L583-L588

[bungle]

And you can see usage here:
https://github.com/bungle/lua-resty-session/blob/master/lib/resty/session/strategies/default.lua#L31-L39

[ne4u]

would it be possible to get feedback from from session.present as to why a session is not present? EX: tampered cookie, user agent switch, etc...