Marshalling objective c to nativescript js - nativescript

Question

Hello I'm trying to use the following cocoa pod for tcp functionality in ios:
https://cocoapods.org/pods/CocoaAsyncSocket
Im facing problems writing the marshalled js using this library
Here is an example (Objective C):
// The most common way to initialize an instance is simply like this:
socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
NSError *err = nil;
if (![socket connectToHost:#"deusty.com" onPort:80 error:&err]) // Asynchronous!
{
// If there was an error, it's likely something like "already connected" or "no delegate set"
NSLog(#"I goofed: %#", err);
}
- (void)socket:(GCDAsyncSocket *)sender didConnectToHost:(NSString *)host port:(UInt16)port
{
NSLog(#"Cool, I'm connected! That was easy.");
}
JSCODE:
// mainQueue var is to get dispatch_get_main_queue
var mainQueue = (function() {
var runloop = CFRunLoopGetMain();
return function(func) {
CFRunLoopPerformBlock(runloop, kCFRunLoopDefaultMode, func);
CFRunLoopWakeUp(runloop);
}
}());
var tcpClient = GCDAsyncSocket.alloc().initWithDelegateDelegateQueue(testerClass,mainQueue);
var e = new interop.Reference();
if (!tcpClient.connectToHostOnPortError('192.168.88.110',3333,e)) {
console.log('Could not connect to mipbook');
console.log(e.value);
}
function socketDidConnectToHost(sock,host,port) {
console.log('connected to host');
}
The connect to port part is working fine, but the delegate instance method is not being called when the connection is successful.

Answer 1

Tried with this:
let delegate = ...
let dispatchQueue = dispatch_queue_create("test_queue", null);
let udp = GCDAsyncSocket.alloc().initWithDelegateDelegateQueue(delegate, dispatchQueue);
And it works fine. Should also work for GCDAsyncSocket.
For some reason dispatch_get_main_queue() is undefined.

Answer 2

Ok, I got it to work
The problem was with marshalling dispatch_get_main_queue(). I got my script to work by editing GDCAsyncSocket.m in the source of the pod used.
GDCAsyncSocket.m:
delegateQueue = dq;
change to
delegateQueue = dispatch_get_main_queue();
this way dispatch_get_main_queue() is no longer needed to be passed from the js side, its value is evaluated in the objective c library.
Here is the working JS code:
var tcpClientDelegate = NSObject.extend({
socketDidConnectToHostPort(sock,host,port) {
console.log('connected to host: '+host);
console.log('connected to port: '+port);
}
}, {
protocols: [GCDAsyncSocketDelegate]
});
var clientInstance = new tcpClientDelegate();
var tcpClient = GCDAsyncSocket.alloc().initWithDelegateDelegateQueue(clientInstance,null);
var e = new interop.Reference();
if (!tcpClient.connectToHostOnPortError('192.168.88.110',3333,e)) {
console.log('Could not connect to mipbook');
console.log(e.value);
}