tls-client application cannot connect to the Mbed server after the root CA change

[k-stachowiak]

The tls-client application returns:

Starting mbed-os-example-tls/tls-client
Using Mbed OS 5.10.3
Successfully connected to os.mbed.com at port 443
Starting the TLS handshake...
mbedtls_ssl_handshake() returned -0x2700

[Carmeloning]

How do you slove this problem？

[k-stachowiak]

@Carmeloning Please see the PR that is linked here: #217
To solve this error one must update the root certificate, otherwise the Mbed server will not accept the connection.