Look at my project, where I have almost the same idea. Sending static files for the web application from a folder or from XData element if present.

When WebSocket initialize connection from the client side, the server should create a process, which will do any work for this client/s. But this connection should stay alive, that's needed by the standard. And Async, in this case, means, that any side of this connection, client or server can send a message at any time, when it needed. While another side should be ready to get this message and send or not some response. But this response, not the same as it could be in plain HTTP, it should be as any other messages if it was initiated by own.

In what time you getting this error? Just by reading one by one rows? If you would use the same query multiple times with the same amount of rows, the error will happen after the same count read rows?

Hi, could you explain a bit more? What are you trying to do? Do you use Docker?

It's a bit difficult to answer correctly because I still not sure what are you doing, I would try ''''aaa''aaa'''' or ''''aaa''''''aaa'''' or  even ''''aaa''''''''aaa''''

Are you sure that you not overlooked something in the Documentation?

How about .Net Caché eXTreme

If you still sure that it is not enough. You can create own, based on any already realized ways, for example on C++ binding

If so, do not forget to mark the answer as accepted.

Yes, they do, but only keynote. And InterSystems streamed keynote, at least in 2015, not sure about last one.

I would agree, It may look quite expensive. But I just compared it with some other conferences like Oracle, Apple, Google, and I found that all of them cost quite close, even usually bigger.

I want to add, something. I'm Russian, and for us, it cost even much more expensive than for you. And unfortunately, last three years, I participated GlobalSummit and I think I was alone from Russia, except IS. But anyway, if I am not mistaken, last Global Summit participated by more than 200 people from 23 countries, but most of these people from the US.

Where do you need it, in Web/ZEN or in terminal?

Right, finally you just should open Atelier perspective.

As far as I know, you can install any number of versions of Eclipse as you want. I'm using now the latest version of Eclipse Neon.3 with the latest beta version of Atelier, on macOS Sierra.

I don't know how close my version of this method to the original, but it should be something like this. But I think, your version a bit bigger.

ClassMethod Main(cfg As %SystemBase, mode As %String) As %String
{
    set trantabla=cfg.trantable
    set str=""
    set list=$listbuild(72,101,108,108,111,32,87,111,114,108,100,33)
    for i=1:1:$listlength(list) {
        set n=$listget(list, i)
        set hex = $zhex(n)
        set str = str _ "\u" _ $extract("000" _ hex, *-3, *)
    }
    set str=$zconvert(str, mode, trantable)
    set:$length(str)'=12 str="????? ??????"
    quit str
}

Btw, it was a good idea, to deploy code. But I think bad idea to hide original string in $ListBuild 

set list=$lb(72,101,108,108,111,32,87,111,114,108,100,33)

Because, such static variables, stored as is in OBJ code, and could be easily recognized.

USER>zzdump list

0000: 03 04 48 03 04 65 03 04 6C 03 04 6C 03 04 6F 03         ..H..e..l..l..o.
0010: 04 20 03 04 57 03 04 6F 03 04 72 03 04 6C 03 04         . ..W..o..r..l..
0020: 64 03 04 21                                             d..!

Next time please, ask in a separate question, for now, I've done it for you.

Not possible, due to data in the file stored sequentially. If you want to insert some data in any place, it means you should move all next data on the disk too. So, the only way it is a new file.