UOdinRoom

An opaque type representing an ODIN room handle, which is managed by the underlying connection. This abstraction provides a high-level interface for joining rooms, managing persistent state and sending/receiving data, making it easier to integrate room-based interactions into your application.

Declaration

UCLASS(ClassGroup = Odin, Blueprintable, BlueprintType)
class ODIN_API UOdinRoom : public UObject

• Header: #include "OdinRoom.h"
• Module: Odin
• Inherits from: UObject
• Blueprint: Blueprint type, Blueprintable · Blueprint reference

Overview

Functions

Name	Description
ConstructRoom	Creates a new room object for the given world context.
CloseRoom	Gracefully leaves the room: closes the native room, which makes our own peer leave the room on the server, waits for the native "closed" status (at most CloseTimeoutSeconds) and only then frees the native room.
IsClosing	Whether CloseRoom was called and the native room has not been freed yet.
CloseOdinRoomByHandle	Starts closing the specified native room, thus making our own peer leave the room on the server.
FreeRoom	Frees the native room immediately.
FreeRoomByHandle	Destroys the specified ODIN room handle and releases all underlying resources.
FlushKnownPeers	Reports every peer this room announced via OnRoomPeerJoinedBP as left, through the same path as a real peer left event, and forgets them.
ReleaseHandle	Frees the native room (if any), drops the subsystem registration and invalidates the crypto and all socket wrappers.
InvalidateAllSockets	Invalidates all socket wrappers of this room without touching the native sockets.
GetConnectionGeneration	Monotonic counter that is bumped whenever the native room handle changes (connect, free).
ConnectRoom	Connects the room to an ODIN gateway and joins it with the given authentication token.
ConnectRoomNative	Connects this room via the native API using this object's registered event callbacks.
GetOwnPeerId	Get last retrieved peer id that represents "self".
GetReconnectToken	Returns the latest reconnect token the server issued for this room (see On New Reconnect Token).
GetRoomName	Returns the ID of the joined room, as reported by On Room Joined.
GetConnectionStats	Returns statistics of the room's connection: the UDP datagrams and bytes sent and received, and the round-trip time.
SendRpc	Sends a JSON-encoded RPC message to the server.
ChangeSelf	Updates the local peer's User Data.
SetChannelMasks	Sends the channel masks the local peer listens to, per remote peer.
SetListenChannelMask	Sets the channel mask used when listening to peers that do not have a per-peer override set via SetListenChannelMaskForPeer.
SetListenChannelMaskForPeer	Overrides the channel mask used when listening to a specific peer, taking precedence over the default set via SetListenChannelMask.
ClearListenChannelMaskForPeer	Removes a previously set per-peer listen channel mask override, falling back to the default set via SetListenChannelMask for that peer.
SendMessage	Sends an arbitrary data message to a specific list of peers.
SendAudio	Drain Encoder pipline for audio data and sends encoded voice packets to the server.
GetOdinRoomName	Returns the name of the room as reported by the native room handle.
IsConnected	Returns true if the client is currently connected to the ODIN server and the room session is active.
SetRoomEvents	Replaces the event callback struct used for future room creations.
GetRoomEvents
RemoveRoomEvents
GetRoomCipher
GetHandle
SetHandle
SetPassword	Set a string password as arbitary shared secret.
GetDecodersByPeer	Returns all decoders that are registered for the given peer of this room (see Register Decoder to Peer).
CreateLocalSocket	Create an uobject socket, sets the native handle and refreshes socket info
CreateRemoteSocket	Create an uobject socket, sets the native handle and refreshes socket info
GetSocketByHandle	Gets socket from this room
GetOrCreateRoomSocket	Gets socket from this room or creates a remote socket with the provided handle
RemoveSocket	Close native socket and return uobject socket
OpenSocket	Opens a socket to a peer in this room, or to all peers with a Target Peer Id of 0.
RemoveSocketsForPeer	Close and remove all sockets whose remote peer is the given peer.
RemoveAllSockets	Closes and removes all sockets of this room.

Properties

Name	Description
CloseTimeoutSeconds	How long CloseRoom waits for the native "closed" status before it frees the room anyway.
Crypto	Optional instance of pluggable encryption module for room communications.

Events

Name	Description
OnRpcBP	Raised for every RPC the server sends to this room, with the raw JSON.
OnSocketBP	Raised when a message arrives on any socket of this room.
OnRoomStatusChangedBP	Raised when the connection status of the room changes: joining while (re)connecting, joined once the room is joined, and closed after the room was closed.
OnRoomNewReconnectTokenBP	Event triggered when the server issues a new reconnect token.
OnRoomMessageReceivedBP	Event triggered when an arbitrary message is received from a peer.
OnRoomJoinedBP	Event triggered when the local client has successfully joined the room.
OnRoomPeerJoinedBP	Event triggered when a remote peer joins the room.
OnRoomPeerChangedBP	Event triggered when a remote peer updates their user data.
OnRoomPeerLeftBP	A peer left the room.
OnRoomErrorBP	Raised when the server reports an error for this room.
OnRoomClosed	Native-only notification that a close started via CloseRoom has ended: the native room was freed after the "closed" status arrived or CloseTimeoutSeconds elapsed, or it was released otherwise while the close was pending (FreeRoom, ConnectRoom, destruction).

Functions

ConstructRoom

Overload 1

Static · Blueprint: Construct Room

Creates a new room object for the given world context. It does not connect yet: bind the room events, then call ConnectRoom. The second overload wraps an existing native room (and optional cipher).

UFUNCTION(BlueprintCallable, Category = "Odin")
static UOdinRoom* ConstructRoom(UObject* WorldContextObject);

Parameter	Type	Description
WorldContextObject	UObject*

Returns UOdinRoom* – The constructed room object.

Overload 2

Static

static UOdinRoom* ConstructRoom(UObject* WorldContextObject, OdinRoom* handle, OdinCipher* crypto = nullptr);

Parameter	Type	Description
WorldContextObject	UObject*
handle	OdinRoom*
crypto	OdinCipher*	Default: nullptr.

Returns UOdinRoom*

CloseRoom

Blueprint: Close Room

Gracefully leaves the room: closes the native room, which makes our own peer leave the room on the server, waits for the native "closed" status (at most CloseTimeoutSeconds) and only then frees the native room. Every announced peer is reported via OnRoomPeerLeftBP before the "closed" status is broadcast; OnRoomClosed fires once the native room is freed.

UFUNCTION(BlueprintCallable, Category = "Odin")
bool CloseRoom();

Returns bool – False if there was no native room to close.

note

Must be called on the game thread. Returns false if there is no native room. Use FreeRoom to release the native room immediately without waiting.

IsClosing

Const · Inline · Blueprint: Is Closing

Whether CloseRoom was called and the native room has not been freed yet.

UFUNCTION(BlueprintPure, Category = "Odin|Room")
bool IsClosing() const;

Returns bool

CloseOdinRoomByHandle

Static

Starts closing the specified native room, thus making our own peer leave the room on the server. The native close is asynchronous; the room reports the "closed" status afterwards.

static bool CloseOdinRoomByHandle(OdinRoom* room);

Parameter	Type	Description
room	OdinRoom*

Returns bool

note

To release resources, call FreeRoomByHandle. Freeing right after closing suppresses the "closed" status. Prefer CloseRoom on the owning UOdinRoom.

FreeRoom

Blueprint: Free Room

Frees the native room immediately. Announced peers are reported via OnRoomPeerLeftBP first. The native free closes the room as well, but the "closed" status is not delivered anymore.

UFUNCTION(BlueprintCallable, Category = "Odin")
bool FreeRoom();

Returns bool – True if a native room was freed.

FreeRoomByHandle

Static

Destroys the specified ODIN room handle and releases all underlying resources.

static bool FreeRoomByHandle(OdinRoom* room);

Parameter	Type	Description
room	OdinRoom*

Returns bool

note

Since the handle could be invalid for the SDK while connecting, manual call odin_room_free would work, even if the room is still connecting. If the handle belongs to a registered UOdinRoom, this behaves like FreeRoom on that object.

FlushKnownPeers

Reports every peer this room announced via OnRoomPeerJoinedBP as left, through the same path as a real peer left event, and forgets them. Used when the session ends without the server sending peer left events: connection loss, close, free and reconnect. Game thread only.

void FlushKnownPeers();

ReleaseHandle

Frees the native room (if any), drops the subsystem registration and invalidates the crypto and all socket wrappers. Safe to call during destruction; every path that frees the native room must go through this, so the handle cannot be freed twice. Ends a pending CloseRoom and fires OnRoomClosed for it; no other delegate fires here, so callers that want announced peers reported as left call FlushKnownPeers first.

void ReleaseHandle();

InvalidateAllSockets

Invalidates all socket wrappers of this room without touching the native sockets. Used when the native room is freed, since its sockets die with it.

void InvalidateAllSockets();

GetConnectionGeneration

Const · Inline

Monotonic counter that is bumped whenever the native room handle changes (connect, free). Deferred event tasks compare it to detect that their captured native handles belong to a previous connection, even if a new native room reuses the same pointer value.

uint64 GetConnectionGeneration() const;

Returns uint64

ConnectRoom

Blueprint: Connect Room

Connects the room to an ODIN gateway and joins it with the given authentication token. The call returns right away: On Room Joined fires once the room is joined, and On Peer Joined fires for every peer that is already in the room or joins later. Bind the room events before calling this node.

UFUNCTION(BlueprintCallable, Category = "Odin")
UOdinRoom* ConnectRoom(
    FString gateway,
    FString authentication,
    bool& bSuccess,
    UOdinCrypto* crypto = nullptr);

Parameter	Type	Description
gateway	FString	The Gateway URL (e.g. 'https://gateway.odin.4players.io').
authentication	FString	The authentication token (JWT) or signed JSON payload. Generate this using Generate Room Token.
bSuccess	bool&	True if the connection was started. Failures are logged.
crypto	UOdinCrypto*	Optional crypto extension for end-to-end encryption, created with Construct Crypto Extension. Leave it empty for an unencrypted room. Default: nullptr.

Returns UOdinRoom* – The room itself.

ConnectRoomNative

Connects this room via the native API using this object's registered event callbacks. Shares the full lifecycle handling (reconnect cleanup, cipher ownership, subsystem registration) with ConnectRoom, but returns the raw error code.

OdinError ConnectRoomNative(const FString& Gateway, const FString& Authentication, UOdinCrypto* InCrypto);

Parameter	Type	Description
Gateway	const FString&
Authentication	const FString&
InCrypto	UOdinCrypto*

Returns OdinError

GetOwnPeerId

Blueprint: Get own Peer ID

Get last retrieved peer id that represents "self".

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Odin|Room|Info")
int64 GetOwnPeerId();

Returns int64 – The local peer's unique ID.

GetReconnectToken

Blueprint: Get Reconnect Token

Returns the latest reconnect token the server issued for this room (see On New Reconnect Token).

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Odin|Room|Info")
FString GetReconnectToken();

Returns FString – The reconnect token string.

GetRoomName

Blueprint: Get Room Name

Returns the ID of the joined room, as reported by On Room Joined. Empty before the room is joined.

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Odin|Room|Info")
FName GetRoomName();

Returns FName – The room name.

GetConnectionStats

Blueprint: Get Connection Stats

Returns statistics of the room's connection: the UDP datagrams and bytes sent and received, and the round-trip time.

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Odin|Room|Info")
FOdinConnectionStats GetConnectionStats();

Returns FOdinConnectionStats – Struct containing connection metrics.

SendRpc

Blueprint: Send Rpc

Sends a JSON-encoded RPC message to the server.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool SendRpc(FString json);

Parameter	Type	Description
json	FString	JSON rpc string

Returns bool – true on ODIN_ERROR_SUCCESS or false

ChangeSelf

Blueprint: Send ChangeSelf Rpc

Updates the local peer's User Data. This data is synced to all other peers in the room (triggering On Peer Changed). Use this to broadcast player names, team info, or avatar URLs.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool ChangeSelf(FOdinChangeSelf request);

Parameter	Type	Description
request	FOdinChangeSelf	Change own peer request

Returns bool – true on ODIN_ERROR_SUCCESS or false

SetChannelMasks

Overload 1

Blueprint: Send SetChannelMasks Rpc

Sends the channel masks the local peer listens to, per remote peer. Voice packets of a peer are only delivered on the channels of its mask. For most cases, the Set Listen ChannelMask nodes are easier to use: they keep the masks of known and newly joining peers up to date.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool SetChannelMasks(const FOdinSetChannelMasks& request);

Parameter	Type	Description
request	const FOdinSetChannelMasks&	Change channel mask

Returns bool – true on ODIN_ERROR_SUCCESS or false

Overload 2

Call SendRpc to set channel masks.

bool SetChannelMasks(TMap<int64, uint64> masks, bool reset);

Parameter	Type	Description
masks	TMap<int64, uint64>	Masks to set, with map from peer Id to channel mask
reset	bool

Returns bool – true on ODIN_ERROR_SUCCESS or false

SetListenChannelMask

Blueprint: Set Listen ChannelMask

Sets the channel mask used when listening to peers that do not have a per-peer override set via SetListenChannelMaskForPeer. Applies immediately to every currently known peer and is automatically applied to peers that join afterward.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool SetListenChannelMask(FOdinChannelMask Mask);

Parameter	Type	Description
Mask	FOdinChannelMask	channel mask to listen to for all peers without an override

Returns bool – true on ODIN_ERROR_SUCCESS or false

note

Convenience wrapper around SetChannelMasks; for one room instead of multiple rooms

SetListenChannelMaskForPeer

Blueprint: Set Listen ChannelMask For Peer

Overrides the channel mask used when listening to a specific peer, taking precedence over the default set via SetListenChannelMask. Useful for finer per-sender control, e.g. always hearing party members on the non-spatialized group channel even when standing next to them.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool SetListenChannelMaskForPeer(int64 PeerId, FOdinChannelMask Mask);

Parameter	Type	Description
PeerId	int64	peer to override the listen channel mask for
Mask	FOdinChannelMask	channel mask to listen to for this peer

Returns bool – true on ODIN_ERROR_SUCCESS or false

ClearListenChannelMaskForPeer

Blueprint: Clear Listen ChannelMask For Peer

Removes a previously set per-peer listen channel mask override, falling back to the default set via SetListenChannelMask for that peer.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool ClearListenChannelMaskForPeer(int64 PeerId);

Parameter	Type	Description
PeerId	int64	peer to remove the override for

Returns bool – true on ODIN_ERROR_SUCCESS or false

SendMessage

Blueprint: Send Message Rpc

Sends an arbitrary data message to a specific list of peers. Keep list empty, to send to all peers.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Rpc")
bool SendMessage(const FOdinSendMessage& request);

Parameter	Type	Description
request	const FOdinSendMessage&	Set Message

Returns bool – true on ODIN_ERROR_SUCCESS or false

SendAudio

Blueprint: Send Audio

Drain Encoder pipline for audio data and sends encoded voice packets to the server.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Audio Pipeline")
bool SendAudio(UOdinEncoder* encoder);

Parameter	Type	Description
encoder	UOdinEncoder*	encoder to drain all datagrams

Returns bool

GetOdinRoomName

Const · Blueprint: Get Odin Room Name

Returns the name of the room as reported by the native room handle.

UFUNCTION(BlueprintPure, Category = "Odin|Room")
FString GetOdinRoomName() const;

Returns FString – room as string representation

IsConnected

Const · Blueprint: Is Connected

Returns true if the client is currently connected to the ODIN server and the room session is active.

UFUNCTION(BlueprintPure, Category = "Odin|Room")
bool IsConnected() const;

Returns bool – true if JoinedStatus

SetRoomEvents

Replaces the event callback struct used for future room creations.

void SetRoomEvents(const OdinRoomEvents& roomcb);

Parameter	Type	Description
roomcb	const OdinRoomEvents&

warning

The native room clones the event struct on odin_room_create, so changes made here have no effect on an already-created room; they only apply to the next connect.

GetRoomEvents

OdinRoomEvents* GetRoomEvents();

Returns OdinRoomEvents*

See also: SetRoomEvents for the remark on already-created rooms

RemoveRoomEvents

void RemoveRoomEvents();

See also: SetRoomEvents for the remark on already-created rooms

GetRoomCipher

OdinCipher* GetRoomCipher();

Returns OdinCipher*

GetHandle

Const · Inline

OdinRoom* GetHandle() const;

Returns OdinRoom*

SetHandle

Inline

void SetHandle(OdinRoom* handle);

Parameter	Type	Description
handle	OdinRoom*

SetPassword

Const · Blueprint: Set Crypto Password

Set a string password as arbitary shared secret.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Extensions")
void SetPassword(const FString Password) const;

Parameter	Type	Description
Password	const FString	shared secret

GetDecodersByPeer

Const · Blueprint: Get Decoders by Peer

Returns all decoders that are registered for the given peer of this room (see Register Decoder to Peer).

UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Odin|Room")
TArray<UOdinDecoder*> GetDecodersByPeer(const int64 PeerId) const;

Parameter	Type	Description
PeerId	const int64	Registered Decoder PeerId

Returns TArray<UOdinDecoder*>

note

Used for registered/linked decoders in subsystem (GetDecodersFor)

CreateLocalSocket

Create an uobject socket, sets the native handle and refreshes socket info

TWeakObjectPtr<UOdinSocket> CreateLocalSocket(
    EOdinSocketKind SocketKind,
    int64 TargetPeerId,
    int32 Label,
    int32 Priority);

Parameter	Type	Description
SocketKind	EOdinSocketKind	Kind of Socket i.e. reliable or unreliable
TargetPeerId	int64	Remote PeerId
Label	int32	Arbitrary Id
Priority	int32	Packet transport priority

Returns TWeakObjectPtr<UOdinSocket>

note

Used for sockets with ownership

CreateRemoteSocket

Create an uobject socket, sets the native handle and refreshes socket info

TWeakObjectPtr<UOdinSocket> CreateRemoteSocket(OdinSocket* SocketHandle);

Parameter	Type	Description
SocketHandle	OdinSocket*	Native Socket

Returns TWeakObjectPtr<UOdinSocket>

note

Used for remote peer event sockets where this client does not have ownership

GetSocketByHandle

Const

Gets socket from this room

TWeakObjectPtr<UOdinSocket> GetSocketByHandle(const OdinSocket* SocketHandle) const;

Parameter	Type	Description
SocketHandle	const OdinSocket*	Native Socket

Returns TWeakObjectPtr<UOdinSocket>

GetOrCreateRoomSocket

Gets socket from this room or creates a remote socket with the provided handle

TWeakObjectPtr<UOdinSocket> GetOrCreateRoomSocket(OdinSocket* SocketHandle);

Parameter	Type	Description
SocketHandle	OdinSocket*	Native Socket

Returns TWeakObjectPtr<UOdinSocket>

RemoveSocket

Close native socket and return uobject socket

UOdinSocket* RemoveSocket(const OdinSocket* SocketHandle);

Parameter	Type	Description
SocketHandle	const OdinSocket*	Native Socket

Returns UOdinSocket*

OpenSocket

Blueprint: Open Socket

Opens a socket to a peer in this room, or to all peers with a Target Peer Id of 0. Send data with Send or Send String on the returned socket. The receivers get it through On Socket on their room and On Socket Message Received on their socket.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Socket")
UOdinSocket* OpenSocket(int64 TargetPeerId, EOdinSocketKind SocketKind);

Parameter	Type	Description
TargetPeerId	int64	Remote PeerId, or 0 to broadcast to all peers in the room
SocketKind	EOdinSocketKind	Kind of socket

Returns UOdinSocket*

note

Sockets are bound to the current room session and do not survive a reconnect. Sockets to a specific peer are closed automatically when that peer leaves the room, since the server recycles peer ids and a stale socket could otherwise reach a later peer under the same id; broadcast sockets (target peer 0) stay open for the whole session.

RemoveSocketsForPeer

Blueprint: Remove Peer Sockets

Close and remove all sockets whose remote peer is the given peer.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Socket")
void RemoveSocketsForPeer(int64 PeerId);

Parameter	Type	Description
PeerId	int64	Remote PeerId

note

Called automatically when the peer leaves the room. Outbound sockets are closed for good (the server recycles peer ids, so sending on a stale socket could reach a later peer under the same id); for inbound sockets only the wrapper object is released, the native socket stays open because the native layer reuses its address when a peer with the recycled id opens new sockets.

RemoveAllSockets

Blueprint: Remove All Sockets

Closes and removes all sockets of this room.

UFUNCTION(BlueprintCallable, Category = "Odin|Room|Socket")
void RemoveAllSockets();

Properties

CloseTimeoutSeconds

Static · Constexpr

How long CloseRoom waits for the native "closed" status before it frees the room anyway. The native close only starts the leave; the status confirms that the connection is gone.

static constexpr float CloseTimeoutSeconds = 2.0f;

Crypto

Blueprint: Get/Set

Optional instance of pluggable encryption module for room communications. A cipher can be attached to the room on creation to enable customizable, end-to-end encryption(E2EE). Needs ODIN_USE_CRYPTO with CryptoExtention and associated library.

UPROPERTY(BlueprintReadWrite, Category = "Odin|Room|Extensions")
UOdinCrypto* Crypto;

Events

OnRpcBP

Blueprint: On Rpc

Raised for every RPC the server sends to this room, with the raw JSON. The typed room events (On Room Joined, On Peer Joined, On Room Status Changed, ...) are raised in addition for the RPCs they handle.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinRoomRpcDelegate OnRpcBP;

Signature: FOdinRoomRpcDelegate void(UOdinRoom* room, FString json) (multicast)

OnSocketBP

Blueprint: On Socket

Raised when a message arrives on any socket of this room. The socket's own On Socket Message Received event is raised as well.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinSocketDelegate OnSocketBP;

Signature: FOdinSocketDelegate void(UOdinSocket* socket, TArray<uint8> message) (multicast)

OnRoomStatusChangedBP

Blueprint: On Room Status Changed

Raised when the connection status of the room changes: joining while (re)connecting, joined once the room is joined, and closed after the room was closed.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinRoomStatusChangedDelegate OnRoomStatusChangedBP;

Signature: FOdinRoomStatusChangedDelegate void(UOdinRoom* room, FOdinRoomStatusChanged data) (multicast)

OnRoomNewReconnectTokenBP

Blueprint: On New Reconnect Token

Event triggered when the server issues a new reconnect token.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinNewReconnectTokenDelegate OnRoomNewReconnectTokenBP;

Signature: FOdinNewReconnectTokenDelegate void(UOdinRoom* room, FOdinNewReconnectToken data) (multicast)

OnRoomMessageReceivedBP

Blueprint: On Message Received

Event triggered when an arbitrary message is received from a peer.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinMessageReceivedDelegate OnRoomMessageReceivedBP;

Signature: FOdinMessageReceivedDelegate void(UOdinRoom* room, FOdinMessageReceived data) (multicast)

OnRoomJoinedBP

Blueprint: On Room Joined

Event triggered when the local client has successfully joined the room.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinJoinedDelegate OnRoomJoinedBP;

Signature: FOdinJoinedDelegate void(UOdinRoom* room, FOdinJoined data) (multicast)

OnRoomPeerJoinedBP

Blueprint: On Peer Joined

Event triggered when a remote peer joins the room.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinPeerJoinedDelegate OnRoomPeerJoinedBP;

Signature: FOdinPeerJoinedDelegate void(UOdinRoom* room, FOdinPeerJoined data) (multicast)

OnRoomPeerChangedBP

Blueprint: On Peer Changed

Event triggered when a remote peer updates their user data.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinPeerChangedDelegate OnRoomPeerChangedBP;

Signature: FOdinPeerChangedDelegate void(UOdinRoom* room, FOdinPeerChanged data) (multicast)

OnRoomPeerLeftBP

Blueprint: On Peer Left

A peer left the room. Also raised synthetically for every peer this room announced via OnRoomPeerJoinedBP when the local session ends: on connection loss (status "joining"), on close (status "closed") and when the native room is freed or replaced by a reconnect. Each announced peer is reported as left exactly once, so handlers can tear down per-peer state without tracking the room status themselves.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinPeerLeftDelegate OnRoomPeerLeftBP;

Signature: FOdinPeerLeftDelegate void(UOdinRoom* room, FOdinPeerLeft data) (multicast)

OnRoomErrorBP

Blueprint: On Room Error

Raised when the server reports an error for this room.

UPROPERTY(BlueprintAssignable, Category = "Odin|Room|Events")
FOdinErrorDelegate OnRoomErrorBP;

Signature: FOdinErrorDelegate void(UOdinRoom* room, FOdinError data) (multicast)

OnRoomClosed

Native-only notification that a close started via CloseRoom has ended: the native room was freed after the "closed" status arrived or CloseTimeoutSeconds elapsed, or it was released otherwise while the close was pending (FreeRoom, ConnectRoom, destruction). Fired exactly once per CloseRoom, on the thread that released the room, after the synthetic peer left and the status changed events.

FOdinRoomClosedNativeDelegate OnRoomClosed;

Signature: FOdinRoomClosedNativeDelegate void(UOdinRoom*) (multicast)