ios - Objective-C/CocoaHTTPServer - Is it possible pass how response a NSString object? -

i'm using cocoahttpserver in project , need response simple request string. check incoming parameter , have created nsstring object string want return. don't know how return string. can't use "return xmllist" because xcode remember me pointer incompatible. server want result type nsobject. how can do?

- (nsobject<httpresponse> *)httpresponseformethod:(nsstring *)method uri:(nsstring *)path{    httplogtrace();   if ([path isequaltostring:@"/getphotos"]){       nsstring *xmllist = [[nsstring alloc] init];       myservermethods* myservermethods = [[myservermethods alloc] init];       xmllist = [myservermethods getphotos];       nslog(@"return photos list %@", xmllist);   }    return nil;  } 

thanks

ok, have resolved problem in mode:

if ([path isequaltostring:@"/getphotos"]){     nsstring *xmllist = [[nsstring alloc] init];     myservermethods* myservermethods = [[myservermethods alloc] init]; //first, create instance of myservermethods     xmllist = [myservermethods getphotos];     nsdata* xmldata = [xmllist datausingencoding:nsutf8stringencoding];     httpdataresponse *xmlresponse = [[httpdataresponse alloc] initwithdata:xmldata];     return xmlresponse; }