CallbackHandler.h contains this example code.
#import <Foundation/Foundation.h> #import "SUPDefaultCallbackHandler.h" @interface CallbackHandler : SUPDefaultCallbackHandler { } - (void)onReplayFailure:(id)theObject; - (void)onReplaySuccess:(id)theObject; - (void)onLoginFailure; - (void)onLoginSuccess; - (void)onSubscribeSuccess; - (void)onSubscribeFailure; - (void)onImportSuccess; - (void)onConnectionStatusChange:(SUPDeviceConnectionStatus)connStatus:(SUPDeviceConnectionType)connType:(int32_t)errCode:(NSString*)errString; @end