Request in Postman with same cookies and headers like in browser returns 401, but in browser all works fine - authentication

Question

I trying to scraping data from this url:
https://rgis.mosreg.ru/v3/swagger/map/layer?SERVICE=GeoJSON&layer=34&bbox=37.51027598519073,55.58991,37.84716401480926,55.89414999999997&zoom=11
In web browser, if I visit main page https://rgis.mosreg.ru first (to get cookies), and next - go to this url - all works fine.
But when I trying to perform this request in Postman - its fault with 401 "Unautorized" error.
In Postman I use all same headers and cookies, like in web-browser, but it does not help.
All cookies and headers are synced with browser using Postman INTERCEPTOR
What I missing out?
Chrome screen with headers
Postman screen. Header "mojo" looks line auth header

Answer 1

The server seems to only accept HTTP/2 and reject HTTP/1.1 call. If you have curl compiled with http2 support, you can test this directly:
curl --http2 'https://rgis.mosreg.ru/v3/swagger/map/layer?SERVICE=GeoJSON&layer=34&bbox=37.51027598519073,55.58991,37.84716401480926,55.89414999999997&zoom=11'
Output
< HTTP/2.0 200
< server:nginx/1.19.5 (MOGT Edition # rgis-pub-app-01)
otherwise it returns 401
At the moment, you can't run this request in Postman, because Postman doesn't have http2 support yet
You can also test it with python using the httpx package (pip install httpx[http2]):
import httpx
import asyncio
url = 'https://rgis.mosreg.ru/v3/swagger/map/layer?SERVICE=GeoJSON&layer=34&bbox=37.51027598519073,55.58991,37.84716401480926,55.89414999999997&zoom=11'
r = httpx.get(url)
print(r.http_version)
print(r.status_code)
client = httpx.AsyncClient(http2=True)
async def get():
response = await client.get(url)
print(response.http_version)
print(response.status_code)
asyncio.run(get())
Output
HTTP/1.1
401
HTTP/2
200