# XPCReceivedMessage A type that represents a message sent between a session and a listener. ``` struct XPCReceivedMessage ``` ## Topics ### Accessing message content [`func decode(as: T.Type) throws -> T`](/documentation/XPC/XPCReceivedMessage/decode(as:)) Decodes a message as the given type. [`var isSync: Bool`](/documentation/XPC/XPCReceivedMessage/isSync) A Boolean value that indicates if this message is from a synchronous request. ### Replying to messages [`var expectsReply: Bool`](/documentation/XPC/XPCReceivedMessage/expectsReply) A Boolean value that indicates if the client that sent the message expects a reply. [`func reply(Message)`](/documentation/XPC/XPCReceivedMessage/reply(_:)) Sends a reply to the originator of the message. [`func handoffReply(to: DispatchQueue, () -> Void) -> (any Encodable)?`](/documentation/XPC/XPCReceivedMessage/handoffReply(to:_:)) Informs the system when message processing and response continues in a separate dispatch queue. ### Instance Methods [`func senderSatisfies(XPCPeerRequirement) -> Bool`](/documentation/XPC/XPCReceivedMessage/senderSatisfies(_:)) Check whether the sender of the received message satisfies the specified requirement. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)