How to have multiple subclasses of MKNetworkKit? - objective-c

Question

I am currently using MKNetworkKit to cache the download of several images from a restful server. I have another restful service I ping to get supplemental information about the images. Whichever server I ping first works, but when pinging the second server I get the following error:
[The operation couldn’t be completed. (NSURLErrorDomain error 404.)]
2012-08-12 19:51:12.340 [51853:11603]
Error: Error Domain=NSURLErrorDomain Code=404 "The operation couldn’t be completed. (NSURLErrorDomain error 404.)" UserInfo=0x73c5490 {Server=Apache-Coyote/1.1, Content-Length=47, Content-Type=text/html;charset=ISO-8859-1, Connection=keep-alive, Date=Sun, 12 Aug 2012 23:51:11 GMT}
2012-08-12 19:51:12.341 [MKNetworkOperation operationFailedWithError:] [Line 1280] State: 0
MKNetworkKit is pinging the first server in attempt to get data from the second server's URL. I think I may need to create another reachability object? Any idea what I'm doing wrong? Or where I can find some example implementation of one project with multiple subclasses?
Edit
I implement both engines the following way:
#implementation FirstEngine
FirstEngine* _sharedEngine;
+(FirstEngine*)sharedEngine
{
if(_sharedEngine==nil)
{
_sharedEngine = [[FirstEngine alloc] initWithHostName:#"***.**.**.**" customHeaderFields:nil];
}
return _sharedEngine;
}
and invoke them this way:
$[[FirstEngine sharedEngine] bodyForPath:url verb:verb body:params onCompletion:^(NSDictionary* body)
{}....
or
$[[SecondEngine sharedEngine] bodyForPath:url verb:verb body:params onCompletion:^(NSDictionary* body)
{}....

Answer 1

You should create a MKNetworkEngine object in your AppDelegate for "every" server you talk to.
self.imageCacheEngine = [[MKNetworkEngine alloc] initWithHostName:#"images.myserver.com"];
and
self.apiEngine = [[MKNetworkEngine alloc] initWithHostName:#"api.myserver.com"];
Enqueue image requests to the imageCacheEngine and api requests to your apiEngine.