Hi Render Team,
I’m using a Quectel EC200U-CN 4G module with an ESP32-S3 to send HTTPS POST requests to my Render-hosted API
The connection setup works (AT+QIACT, SSL/TLS configs return OK), but the AT+QHTTPPOST` command fails with: +CME ERROR: 732
The endpoint works fine in Postman and browsers.
Questions:
Does Render enforce specific TLS settings, like SNI, HTTP/2, or limited cipher suites?
Any way to view server-side logs for failed TLS handshakes?
Appreciate any help!