When using TinyGSM, the request is seen on the server side but the client side will receive a timeout when usinghttpclient->responseStatusCode().

After a lot of debugging I found that the issue might be due to the way the library slowly transmits the request:

CONNECT OKOKAT+CIPSEND=1,4>POSTOKAT+CIPSEND=1,1> OKAT+CIPSEND=1,7>/test/OKAT+CIPSEND=1,9> HTTP/1.1OKAT+CIPSEND=1,2>OKAT+CIPSEND=1,10>ConnectionOKAT+CIPSEND=1,2>: OKAT+CIPSEND=1,5>closeOKAT+CIPSEND=1,2>OKAT+CIPSEND=1,4>HostOKAT+CIPSEND=1,2>: OKAT+CIPSEND=1,20

Finally the timeout is occurring when callinghttpclient->endRequest() does not seem to send"\r\n\r\n".

If I add:

httpclient->write((const byte*)"\r\n", 2);

the server reply is received.