C# Delegate + Multithreading

Hi, im having problem with delegate not firing.

Basically, im using delegate for a client -> server communication.

Client register to delegate.
Client send message

Server process message
Server send response

Listening thread fire invoke

I added a basic sequence diagram of what im trying to explain.


The problem is when i invoke the delegate, i have a null error.
Im guessing its because background thread can't invoke listener from the mainThread.

So i tried BeginInvoke.
But now im getting this error when trying to set a TextMesh text :
set_text can only be called from the main thread.
Constructors and field initializers will be executed from the loading thread when loading a scene.
Don't use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.


Is there a way i can 'redirect' the invoke from backgroundThread to mainThread?

Ty!!!

 

Unfortunately in Unity any function of signifigance requires it to run on the main thread. There's a couple of alternatives but your best bet is the thread synchronization methods built-in to .NET. There are also a few 3rd-party libraries such as ConcurrentQueue and HashBucket that will let you queue up actions or objects for processing on a different thread.

If you just want to setText, i.e. uni-directional updating, you could use a thread synchronization lock to set a string property in an object running on your communication thread, then call the actual setText from the main thread when it detects that the string has changed using a semaphore or mutex trigger.

BeginInvoke, whilst powerful, is unfortunately not a panacea to your threading woes.

 

Ty for you're reply. No im not just using setText. I want to use this for my core structure for any server request.
Is it possible to give me an example of how i can queue up action on another thread? This would solve my problem!

 

I have another idea. What about i tell the mainThread to execute string as code. So i could queue up delegate1.invoke() has string in a list and parse it from the mainThread?
http://stackoverflow.com/questions/14485226/convert-string-to-executable-c-sharp-code-in-code-behind