he escalado la incidencia al alojamiento que es Arsys , he aprendido a realizar un verbose del curl que no sabía y desde localhost:
* Trying [IP-SERVIODR]:[PUERTO]...
* Connected to [DOMINIO] ([IP-SERVIODR]) port [PUERTO](#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
* CAfile: curl-ca-bundle.crt CApath: none
* SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256
* ALPN, server accepted to use h2
* Server certificate:
* subject: CN=[DOMINIO]
* start date: Jun 2 02:16:09 2022 GMT
* expire date: Aug 31 02:16:08 2022 GMT
* subjectAltName: host "[DOMINIO]" matched cert's "[DOMINIO]"
* issuer: C=US; O=Let's Encrypt; CN=R3
* SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
* Using HTTP2, server supports multi-use * Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x296d2a50130) > POST /r/web/WebServer/TRAY/prestashop.p HTTP/2 Host: [DOMINIO]:[PUERTO]accept: */* content-length: 248 content-type: application/x-www-form-urlencoded
* We are completely uploaded and fine
* Connection state changed (MAX_CONCURRENT_STREAMS == 250)! < HTTP/2 200 < content-type: text/plain; charset=utf-8 < content-length: 81 < date: Fri, 03 Jun 2022 13:11:14 GMT < * Connection #0 to host [DOMINIO] left intact
Mientras que en producción (Arsys) se queda en:
* Trying [IP-SERVIODR]...
* Connection timed out after 10000 milliseconds
* Closing connection 0
Por cierto el : 'Gateway Timeout' se soluciono implementando
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
me parece que una conexión debería realizarse en menos de ese tiempo...
Ahora hay que ver porque Arsys no ve la IP-SERVIDOR
Y la IP-SERVIDOR es publica es accesible, no esta en una red local, ni se accede por VPN.
Gracias Jose y Tom 