Finding Sessions

The Find Crossplay Sessions node searches for available sessions across platforms. It queries EOS for cross-platform sessions and can optionally search Steam lobbies to find games hosted by Steam friends.

Basic Usage

Quick Setup

MaxResults = 50
bIncludePlatformLobbies = true
bOnlyFriendsOnPlatform = false

This searches for all public sessions/lobbies on EOS and Steam shadow lobbies.

Parameters

Search Settings

Filtering

Custom Attribute Filters

Filter sessions based on custom attributes set during creation:

Filter Types

Setting Up Filters

Filter 1:
  Key: "GameMode"
  Type: String
  Comparison: EqualTo
  Value: "TeamDeathmatch"

Filter 2:
  Key: "MinLevel"
  Type: Integer
  Comparison: LessThanOrEqual
  Value: 50

Output

Delegates

Session Info

Each result contains:

Platform Lobbies

When bIncludePlatformLobbies is enabled on Steam:

1. EOS Search - Finds cross-platform EOS sessions/lobbies
2. Steam Search - Finds Steam lobbies with EOS linking data

Steam lobbies with IsEosSession = true are UCIK shadow lobbies. The node extracts the EOS connection info automatically.

Why Search Both?

• EOS only: Finds all cross-platform games
• Steam included: Also finds friends' games via Steam friends list

Steam friends who haven't linked EOS accounts won't appear in EOS searches, but will appear in Steam lobby searches.

Friends-Only Search

Set bOnlyFriendsOnPlatform = true to only show sessions hosted by platform friends.

This is useful for "Join Friend" functionality in your UI.

Search Flow

1. Node activated
2. Query EOS for sessions/lobbies
3. If bIncludePlatformLobbies:
   - Query Steam lobbies
   - Merge results (deduplicate by EOS ID)
4. Apply filters
5. Fire OnSuccess with results

Displaying Results

Use the session info to build your server browser:

For each SessionInfo:
  Display: OwnerDisplayName
  Display: CurrentPlayers / MaxPlayers
  Display: CustomAttributes["MapName"]
  Display: CustomAttributes["GameMode"]

  On Click: JoinCrossplaySession(SessionInfo)

Joining a Session

Pass the FUCIK_SessionInfo directly to Join Session:

JoinCrossplaySession
  SessionToJoin = [Selected SessionInfo]
  bAutoTravel = true

The SessionInfo contains the native search result needed for joining.

Platform Support

Backend Support

UCIK automatically uses the appropriate backend:

• Online Services (OSSv2): UE 5.7+ with Online Services enabled
• Online Subsystem (OSSv1): All UE versions with EIK

You don't need to handle this - the node works identically on both backends.

Common Patterns

Server Browser

Find Crossplay Sessions
  MaxResults = 100
  bIncludePlatformLobbies = true

On Success:
  Populate ListView with SessionInfo array

On Item Selected:
  JoinCrossplaySession(SelectedSession)

Quick Match

Find Crossplay Sessions
  MaxResults = 1
  Filters: [GameMode == "Casual"]

On Success (1+ results):
  JoinCrossplaySession(Results[0])

On Success (0 results):
  CreateCrossplaySession(...)  // Host instead

Join Friend

Find Crossplay Sessions
  bOnlyFriendsOnPlatform = true

On Success:
  Show "Friends Playing" list

FAQs

Why don't I see my friend's session?

1. Private/Invite-Only: Session may not be public
2. Different Region: Check region filter isn't excluding them
3. Not Ready: Session may not be marked as listening yet
4. EOS Not Linked: Steam friend without EOS linking won't appear in EOS search (enable bIncludePlatformLobbies)

How do I refresh the list?

Call Find Crossplay Sessions again. There's no built-in auto-refresh - implement a timer in your UI if needed.

Can I search while in a session?

Yes, but you should leave your current session before joining a new one.

Next: Joining Sessions | Lobbies | Sessions