I want to have a mod update detector in my mod. but I have no clue what to do. I saw some posts on other sites, but they are outdated.

It said I needed to implement IConnectionHandler, this does not excist.

 

Can anyone help me.

not only me but also others who what this system.

You need to have a text file with the latest version on a webserver somewhere. Then from your mod download that file (google is your friend), compare it to the installed version and if they don't match, tell the user.

I knew that, but the only queation is how.

Which class checks this.

The player needs to log on to minecraft and then it will check if the string in the file is the same or not the same as your current mod version.

HOW?

You can use

PlayerEvent.PlayerLoggedInEvent

to track player logins.

Could you give me an example of some code I could ue to check a url on a website.

Really?

 

http://lmgtfy.com/?q=java+download+file

 

That's funny (lmgtfy). 

 

I think a lot of us newbie modders forget that the whole Java language is available.  Probably did searches related to specific to minecraft ...