A bidirectional communication channel between two processes.
SDKs
Framework
class NSXPCConnection : NSObject
This class is the primary means of creating and configuring the communication mechanism between two processes. Each process has one instance of this class to represent the endpoint in the communication channel.
init(listenerInitializes an NSXPCConnection object to connect to an NSXPCListener object in another process, identified by an NSXPCListener object.
init(machInitializes an NSXPCConnection object to connect to a LaunchAgent or LaunchDaemon with a name advertised in a launchd.
struct NSXPCConnectionOptions that you can pass to a connection.
init(serviceInitializes an NSXPCConnection object to connect to an NSXPCListener object in an XPC service, identified by a service name.
var NSXPCConnectionThe XPC connection was interrupted.
var NSXPCConnectionThe XPC connection was invalid.
var NSXPCConnectionThe XPC connection reply was invalid.
var NSXPCConnectionThe lower bounds of XPC connection error code values. All XPC error codes have values between NSXPCConnection and NSXPCConnection, exclusive. This constant does not correspond to any particular error.
var NSXPCConnectionThe upper bounds of XPC connection error code values. All XPC error codes have values between NSXPCConnection and NSXPCConnection, exclusive. This constant does not correspond to any particular error.
var auditThe BSM audit session identifier for the connecting process.
var effectiveThe effective group ID (EGID) of the connecting process.
var effectiveThe effective user ID (EUID) of the connecting process.
var endpoint: NSXPCListenerIf the connection was created with an NSXPCListener object, returns the endpoint object used.
var exportedThe NSXPCInterface object that describes the protocol for the exported object on this connection.
var exportedAn exported object for the connection.
var interruptionAn interruption handler that is called if the remote process exits or crashes.
var invalidationAn invalidation handler that is called if the connection can not be formed or the connection has terminated and may not be re-established.
var processThe process ID (PID) of the connecting process.
var remoteDefines the NSXPCInterface object that describes the protocol for the object represented by the remote.
var remoteReturns a proxy for the remote object (that is, the exported from the other side of this connection).
var serviceThe name of the XPC service that this connection was configured to connect to.
func invalidate()Invalidates the connection.
func remoteReturns a proxy for the remote object (that is, the object exported from the other side of this connection) with the specified error handler.
func resume()Starts or resumes handling of messages on a connection.
func suspend()Suspends the connection.
protocol NSXPCProxyMethods for creating new proxy objects.
class NSXPCInterfaceAn interface that may be sent to an exported object or remote object proxy.