Upstream (chunked):
$ curl -vk "https://7f42-87-5-241-29.ngrok.io/file" -I
*   Trying 3.13.191.225:443...
* Connected to 7f42-87-5-241-29.ngrok.io (3.13.191.225) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: CN=*.ngrok.io
*  start date: Sep 30 21:06:04 2021 GMT
*  expire date: Dec 29 21:06:03 2021 GMT
*  issuer: C=US; O=Let's Encrypt; CN=R3
*  SSL certificate verify ok.
> HEAD /file HTTP/1.1
> Host: 7f42-87-5-241-29.ngrok.io
> User-Agent: curl/7.71.1
> Accept: */*
> 
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
HTTP/1.1 200 OK
< Content-Type: application/octet-stream
Content-Type: application/octet-stream
< Accept-Ranges: bytes
Accept-Ranges: bytes
< Transfer-Encoding: chunked
Transfer-Encoding: chunked
< Content-Disposition: attachment; filename="file_example_MP4_640_3MG.zucc"
Content-Disposition: attachment; filename="file_example_MP4_640_3MG.zucc"
< Content-Length: 3114374
Content-Length: 3114374
< Date: Tue, 05 Oct 2021 08:27:33 GMT
Date: Tue, 05 Oct 2021 08:27:33 GMT
< Keep-Alive: timeout=5
Keep-Alive: timeout=5

< 
* Connection #0 to host 7f42-87-5-241-29.ngrok.io left intact


APIcast (Range not working, responding with 200):
$ curl -vk "https://test-apicast-2445582701437.staging.gw.apicast.io:443/?user_key=ba23f9c2888f65040062bc97673f1b18" -i -H "Range:bytes=0-127"
*   Trying 3.233.49.212:443...
* Connected to test-apicast-2445582701437.staging.gw.apicast.io (3.233.49.212) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: CN=*.staging.gw.apicast.io
*  start date: Aug 16 14:10:44 2021 GMT
*  expire date: Nov 14 14:10:42 2021 GMT
*  issuer: C=US; O=Let's Encrypt; CN=R3
*  SSL certificate verify ok.
> GET /?user_key=ba23f9c2888f65040062bc97673f1b18 HTTP/1.1
> Host: test-apicast-2445582701437.staging.gw.apicast.io
> User-Agent: curl/7.71.1
> Accept: */*
> Range:bytes=0-127
> 
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
HTTP/1.1 200 OK
< server: envoy
server: envoy
< date: Tue, 05 Oct 2021 08:28:17 GMT
date: Tue, 05 Oct 2021 08:28:17 GMT
< content-type: application/octet-stream
content-type: application/octet-stream
< content-disposition: attachment; filename="file_example_MP4_640_3MG.zucc"
content-disposition: attachment; filename="file_example_MP4_640_3MG.zucc"
< x-envoy-upstream-service-time: 734
x-envoy-upstream-service-time: 734
< transfer-encoding: chunked
transfer-encoding: chunked

< 
Warning: Binary output can mess up your terminal. Use "--output -" to tell 
Warning: curl to output it to your terminal anyway, or consider "--output 
Warning: <FILE>" to save to a file.
* Failure writing output to destination
* Failed reading the chunked-encoded stream
* Closing connection 0
* TLSv1.3 (OUT), TLS alert, close notify (256):