Sorry for posting twice. Thought I used the wrong email address
initially, but someone let me through. Responding from the adress I have
subscribed.
I found a workaround at the pygeoapi OGR Provider side (which functions
as a WFS client and accepts GDAL config settings):
'GDAL_HTTP_VERSION': '1.1'
forcing the curl-lib in GDAL/OGR to use HTTP 1.1 (i.s.o. 2).
Basically the same as "curl --http1.1 ....", as below.
Still, I think a (config) fix is needed on the MS demo server frontend,
which runs nginx AFAICS.
Best,
Just van den Broecke
On 29/03/2023 12:35, Just van den Broecke wrote:
Hi,
In the pygeoapi CI on GitHub we experience suddenly an error in the OGR
Provider that connects via WFS to the MapServer demo server. The problem
has to do with HTTP/2 on a Ubuntu 20.04 system.
Error is like:
"Failure, Msg: HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR
(err 1)"
I can trigger the same error with curl on a Ubuntu 20.04 LTS (used by
the GH CI)
curl -v https://demo.mapserver.org/cgi-bin/wfs
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
* Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
* http2 error: Invalid HTTP header field was received: frame type: 1,
stream: 1, name: [upgrade], value: [h2,h2c]
* HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR (err 1)
* stopped the pause stream!
* Connection #0 to host demo.mapserver.org left intact
curl: (92) HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR (err 1)
Forcing HTTP 1.1 gets rid of the error:
curl -v --http1.1 https://demo.mapserver.org/cgi-bin/wfs
So it doesn't seem pygeoapi nor GDAL-related. Looks more like this
(Apache) problem:
https://serverfault.com/questions/937253/https-doesnt-work-with-safari
Best,
--Just
Just van den Broecke
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