Hi James,
When you create a challenge with the "accessType" set to "FRIENDS" it means any friend can find and join it. If PlayerA creates a "FRIENDS" challenge, PlayerB can then find it with a FindChallengeRequest.
If PlayerA then sends a WithdrawChallengeRequest with the challengeId PlayerB won't be able to find it with a FindChallengeRequest. If they have the challengeId they can join it with a JoinChallengeRequest. However in a real game scenario PlayerB would never be able to retrieve this challengeId for a "WITHDRAWN" challenge so would never be able to join any challenge in this state. If you have any further questions just let me know.
Thanks,
Liam
James Ford
According to the documentation, in order for a player to join a challenge, it must be in the issued state.
However, the actual behavior I am seeing is...
1. Player A creates FRIENDS challenge
2. Player A withdraws challenge
3. Player B who is friends with a joins challenge - why isn't this rejected??
4. Challenge start message - oops?