![]() ![]() None (default value) - There are no restrictions on who can join the session. Joinability can be set dynamically during the session lifetime and determines which types of users can join a session. The second aspect to access control is joinability. We recommend that titles set session visibility to open to avoid race conditions during the join flow for a player. The invited player would then have to retry the join() operation, but retries should not be attempted more frequently than every five seconds. If no reservation exists, an access error on the session (HTTP/403) is raised. This race condition can cause a join() call for an invited player to fail because private or visible sessions require a reservation for the joining player. If an invite is sent through the platform UI, it can be received by another player before that player has been reserved in the session. Note: Setting visibility to private can require retries on the join() call by the invited player. Private - Only joined and reserved players can read or write to the session. Visible - All users can read, but only joined and reserved players can write to, the session. Open - All users can read and write to the session. The values for the visibility setting are: Session visibility is typically defined in the session template and determines which types of users have read and write access to a session. Session visibility is a constant that is set at the time of session creation. The first aspect of access control is session visibility. These settings can be used to limit session access at the MPSD level. Multiplayer Session Directory (MPSD) session access is gated by two settings: session visibility and session joinability. This article reviews the differences between visibility and joinability, and it discusses the specific settings we recommend that titles use to give their consumers the best multiplayer user flow. ![]() To provide a great user experience for session joining, and for inviting players into game sessions and parties, title developers need to understand these settings. On Xbox One (or later), the visibility and joinability settings for game sessions and game parties control access to multiplayer experiences. ![]()
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