Is there a restriction on how many raises and re-raises a player can do in online poker? Or can it go forever until the players are all-in?

In no-limit and pot-limit games, players can raise until they are all-in.

In limit games, there is usually a cap per round. It's typically 4 or 5 bets. However, some sites (Crypto sites, for example) allow unlimited raises if there are only 2 players left in the hand.

like the above poster said.

in limit it is usually 4-5 but at each different casinos and each site it could vary

I should have said that its no-limit I'm interested in. Got my answer.

Thanks again