Correctly releasing SocketIO object (ARC library) in non-ARC project

[quintet]

I am using ARC version of the library in my non-ARC project. I am using the method explained in this tutorial to merge non-ARC project and ARC library. In this method the library is compiled as a static library (in ARC mode itself) and added as a second target to the project.

In my ViewController file I am initializing the socket using

SockIO *chatSockIO = [[SocketIO alloc] initWithDelegate:self];

and when I need to disconnect, I call

[chatSockIO disconnect];

which results socketIODidDisconnect delegate method to fire.

- (void) socketIODidDisconnect:(SocketIO *)socket{
   [chatSockIO release]; ==> is this call needed?
}

Now my question is about the line [chatSockIO release]. Should we need to release an object which itself is defined in ARC mode, but is used in a non-ARC project?

When I run this code with the line uncommented I am getting a crash saying,

-[SocketIO retain]: message sent to deallocated instance 0x6fec370

I tried run with zombies and it gave me the fully retain/release cycle of the sockIO object

#   Address     Category    Event Type  RefCt   Timestamp       Size    Responsible Library     Responsible Caller
0   0x72d5da0   SocketIO    Malloc      1       00:09.700.274   64      MyProject           -[MyViewController sendRequestForSocketIOPush]
1   0x72d5da0   SocketIO    Retain      2       00:09.700.317   0       MyProject           -[SocketIO initWithDelegate:]
2   0x72d5da0   SocketIO    Release     1       00:09.700.320   0       MyProject           -[SocketIO initWithDelegate:]
3   0x72d5da0   SocketIO    Retain      2       00:09.700.440   0       Foundation          -[NSURLConnectionInternal initWithInfo:]
4   0x72d5da0   SocketIO    Retain      3       00:10.413.717   0       Foundation          -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]
5   0x72d5da0   SocketIO    Release     2       00:10.413.761   0       Foundation          -[NSURLConnectionInternalConnection invokeForDelegate:]
6   0x72d5da0   SocketIO    Retain      3       00:10.413.797   0       Foundation          -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]
7   0x72d5da0   SocketIO    Release     2       00:10.413.811   0       Foundation          -[NSURLConnectionInternalConnection invokeForDelegate:]
8   0x72d5da0   SocketIO    Retain      3       00:10.413.816   0       Foundation          -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]
9   0x72d5da0   SocketIO    Release     2       00:10.415.087   0       Foundation          -[NSURLConnectionInternalConnection invokeForDelegate:]
10  0x72d5da0   SocketIO    Retain      3       00:10.415.214   0       Foundation          -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]
11  0x72d5da0   SocketIO    Release     2       00:10.415.216   0       Foundation          -[NSURLConnectionInternalConnection invokeForDelegate:]
12  0x72d5da0   SocketIO    Release     1       00:10.415.275   0       Foundation          -[NSURLConnectionInternalConnection invokeForDelegate:]
13  0x72d5da0   SocketIO    Retain      2       00:10.969.432   0       GraphicsServices    GSEventRunModal
14  0x72d5da0   SocketIO    Release     1       00:10.969.433   0       GraphicsServices    GSEventRunModal
15  0x72d5da0   SocketIO    Retain      2       00:10.969.434   0       GraphicsServices    GSEventRunModal
16  0x72d5da0   SocketIO    Release     1       00:10.969.456   0       GraphicsServices    GSEventRunModal
17  0x72d5da0   SocketIO    Retain      2       00:10.969.459   0       GraphicsServices    GSEventRunModal
18  0x72d5da0   SocketIO    Retain      3       00:10.969.488   0       Foundation          -[NSCFTimer initWithFireDate:interval:target:selector:userInfo:repeats:]
19  0x72d5da0   SocketIO    Release     2       00:10.976.115   0       MyProject           -[SocketIO setTimeout]
20  0x72d5da0   SocketIO    Retain      3       00:10.976.125   0       Foundation          -[NSCFTimer initWithFireDate:interval:target:selector:userInfo:repeats:]
21  0x72d5da0   SocketIO    Release     2       00:10.976.161   0       GraphicsServices    GSEventRunModal
22  0x72d5da0   SocketIO    Retain      3       00:13.935.328   0       GraphicsServices    GSEventRunModal
23  0x72d5da0   SocketIO    Release     2       00:13.935.373   0       MyProject           -[SocketIO setTimeout]
24  0x72d5da0   SocketIO    Retain      3       00:13.935.399   0       Foundation          -[NSCFTimer initWithFireDate:interval:target:selector:userInfo:repeats:]
25  0x72d5da0   SocketIO    Release     2       00:13.935.685   0       MyProject           -[SocketIO onDisconnect]
26  0x72d5da0   SocketIO    Release     1       00:13.935.705   0       MyProject           -[MyViewController socketIODidDisconnect:]
27  0x72d5da0   SocketIO    Release     0       00:13.935.716   0       GraphicsServices    GSEventRunModal
28  0x72d5da0   SocketIO    Zombie      -1      00:13.936.298   0       GraphicsServices    GSEventRunModal

To check I commented the [chatSockIO release] line and put a log in dealloc function of SocketIO class. When I run there is no crash, but dealloc is not getting called and Allocations instrument shows memory is not getting released.

- (void) socketIODidDisconnect:(SocketIO *)socket{
   //[chatSockIO release];   //==> is this call needed?
}

- (void) dealloc
{
    NSLog(@"dealloc of socketio");
    _host = nil;
    _sid = nil;
    _endpoint = nil;

    _webSocket = nil;

    [_timeout invalidate];
    _timeout = nil;

    _queue = nil;
    _acks = nil;
}

So how to release socketIO class in a non-ARC project?

Note : Yesterday I asked the same question on a generic way in stackoverflow. But no one was able to answer.