Im in the middle of making an app for IOS. Its a 2d dungeon crawler that focuses on training your character and collecting loot. I know we've all seen this before but this is just a project for experience. Anyway, I want to make an online auction house where player can sell their loot to other players. I am in the process of enabling match making for 1v1 battles between players. Thats going well but Im not sure how to go about setting up an auction house feature.
Will I need to use a server? or is there a way I can do it similarly to the way Im doing pvp through match making? I understand that it will be hard to give me specific advice when you don't know exactly what i'm doing.
Im using cocos2D for the main game and i'm using Game Centre for the match making. If you need more specific specs just ask.
Any help would be appreciated and please only constructive criticism