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> Unreal Engine API Reference > Runtime > Messaging > EMessageScope

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EMessageScope

Enumerates scopes for published messages.

Windows

MacOS

Linux

References

Module	Messaging
Header	/Engine/Source/Runtime/Messaging/Public/IMessageContext.h
Include	#include "IMessageContext.h"

Syntax

enum EMessageScope
{
    Thread,
    Process,
    Network,
    All,
}

Values

Name	Description
Thread	Deliver to subscribers in the same thread.
Process	Deliver to subscribers in the same process.
Network	Deliver to subscribers on the network.
All	Deliver to all subscribers. This must be the last value in this enumeration.

Remarks

Enumerates scopes for published messages.

The scope determines to which endpoints a published message will be delivered. By default, messages will be published to everyone on the local network (Subnet), but it is often useful to restrict the group of recipients to more local scopes, or to widen it to a larger audience outside the local network.

For example, if a message is to be handled only by subscribers in the same application, the scope should be set to Process. If messages need to be published between different networks (i.e. between LAN and WLAN), it should be set to Network instead.

Scopes only apply to published messages. Messages that are being sent to specific recipients will always be delivered, regardless of the endpoint locations.

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