Try:

set st = ##class(%ZEN.Auxiliary.jsonProvider).%ConvertJSONToObject(responseStream,,.obj,1)

obj would become %ZEN.proxyObject. You can also create a class and parse json into object of that class.

Is

1POST /test/ HTTP/1.1 

actually a part of the request body?

If so, it's invalid json and you need to remove it from request body. What does

do httpRequest.EntityBody.OutputToDevice()

shows right before  sending the request?

Other thought, iin property should be passed as string, not as number. To do that:

1. Create a class

Class MyApp.Request Extends %RegisteredObject {

Property iin As %String;

... other properties ...

}

2. After that instead of %ZEN.proxyObject use this object as a request body.

Note that %ZEN.Auxiliary.jsonProvider:%WriteJSONStreamFromObject method has a pFormat argument, which defaults to aceloqtw in %ObjectToJSON method. One of the flags, q  means  output numeric values unquoted even when they come from a non-numeric property and you don't need that.

So your code should look something like this:

Set Object = ##class(MyApp.Request).%New()
Set Object.iin="123132132"
Set Object.firstName=name
Set Object.lastName=surname
Set Object.middleName=middlename
Set Object.birthDate=birthDate
Set Object.contractType="Z001"
Set sc = ##class(%ZEN.Auxiliary.jsonProvider).%WriteJSONStreamFromObject(httpRequest.EntityBody, Object, , , , "aelotw")
Set sc = httpRequest.Post("", 2)

Can you show the request itself via:

Set sc = httpRequest.Post("", 1) 

I don't have a %request.

Checked again and my suggested approach only works on production start, not host start, sorry.

I have a function which actually run "write $USERNAME" and if I run it from Studio returns the username!

$username returns current user, which for Ensemble job is correctly _Ensemble. You can try to query audit database for that info I guess.

As I said

they are not as reliable as audit database.

First one may not work at all, try safe get: $g(^CacheTemp.EnsUsername($job)).

Second one wouldn't work outside of CSP/ZEN context. Check that %request exists and is an object before calling GetCookie method.

$get works as fast as global could be read. Some ideas:

1. You can use ^PERFMON to see how these two globals are read - from disk or from memory. To do that collect 2 reports - with only ListGlobal load and only StringGlobal load and compare Physical reads.
2. Are both globals the same size?
3. How's globals size relative to global buffer?

You can to change default file I/O from GB18030 to UTF8.

To do that, execute do ^NLS and choose:

2) Select defaults
2) I/O tables
4) File

And choose UTF8 there. After that, your I/O table should look like that:

I/O table              Current default
---------------------  --------------------
....
4) File                UTF8 (*)

After that, restart Cache and delete/reimport faulty files in Atelier

Note that this action (changing NLS defaults) can be disruptive to existing Cache applications.

Let's see Cache locale.

Open Cache terminal and execute:

zn "%SYS"
do ^NLS

There, choose 1) Display current locale and copy the output (should be two screens) here.

What's the server locale?

I just don't know which Azure product.

For Azure it would be Virtual Machines as you need to specify these parameters.

Article would be great.

InterSystems Cloud Manager can deploy to Azure. First Look for ICM is a step by step guide to run InterSystems IRIS in a cloud.

Generally you need to run ICM locally (or on some preexisting server)  and then specify a configuration of what you want. ICM would then provision the servers, install InterSystems IRIS, etc.