Using amazon AWS SNS service IOS

thank you for your coming. I am developing an app which uses amazon aws service and it is a messenger. I would like to use IOS Push Notification service and the amazon SNS to achieve the communication between 2 users. I am able to send message from the SNS console by publishing a message to the destination called endpoint. However, i am not able to send message from one mobile to another mobile by amazon SDK of IOS. Can i do it in that way by the API of Amazon?? I want to send the NSDictionary called messageDict to the destination endPoint. Can i achieve this without the use of server??

Thank you very much for your answers

NSDictionary *messageDict = [[NSDictionary alloc]init];

messageDict = @{ @"Name" : @"HelloWrold" ,@"Id" :@"GoodBye",};

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:messageDict options:NSJSONWritingPrettyPrinted error:nil];

NSString *jsonString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];


NSLog(@"Jsonstring %@",jsonString);

AWSSNS *publishCall = [AWSSNS new];

AWSSNSPublishInput *message = [AWSSNSPublishInput new];

message.subject = @"My First Message";


//This is the ending point
message.topicArn = @"arn:aws:sns:us-east-1:1234152121:endpoint/APNS_SANDBOX/appTesting/201sjad-5246-3ddsfe-9s13-c34sdfdsf1d9c";

message.messageAttributes = messageDict;

message.messageStructure = jsonString;




[[publishCall publish:message]continueWithExecutor:[BFExecutor mainThreadExecutor] withBlock:^id(BFTask *task){

    if (task.error != nil) {
        NSLog(@"Error %@",task.error);

    }


    else{



        NSLog(@"Successful");

    }

    return nil;

}];