xpc_listener_t

Type Alias | XPC

A C type that performs tasks for clients across process boundaries.

typealias xpc_listener_t = OS_xpc_listener

To implement an XPC service, create a listener and respond to incoming session requests.

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Creating a listener

• xpc_listener_incoming_session_handler_t typealias xpc_listener_incoming_session_handler_t — A block that receives an incoming peer session request from a client.

Working with code signing

• xpc_listener_set_peer_code_signing_requirement(_:_:)) func xpc_listener_set_peer_code_signing_requirement(xpc_listener_t, UnsafePointer<CChar>) -> Int32 —

See Also

Interprocess communication

• Creating XPC services
• XPCListener
• XPCSession
• XPCReceivedMessage
• xpc_session_t

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xpc_listener_incoming_session_handler_t

Type Alias | XPC

A block that receives an incoming peer session request from a client.

typealias xpc_listener_incoming_session_handler_t = (xpc_session_t) -> Void

When a client connects to your service, the system invokes this block with a session that represents the server’s connection to the client. Before returning from this block, you must do one of the following:

• Call xpc_session_set_incoming_message_handler to set a handler for incoming messages.
• Call xpc_session_cancel to cancel the session.

When the incoming_session_handler returns, the system automatically activates the peer session unless you explicitly cancel it.

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xpc_listener_set_peer_code_signing_requirement(_:_:)

Function | XPC

func xpc_listener_set_peer_code_signing_requirement(_ listener: xpc_listener_t, _ requirement: UnsafePointer<CChar>) -> Int32