TLS handshake failures -fatal alert protocol_version

Hi Curl help,
we are trying to add TLS handshake support to a curl client with socks
proxy
After server hello was done , we see fatal alert protocol_version failure
which terminates the
 connection.
* Trying fd53:7cb8:383:8::1:1080...
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* *TLSv1.2 (IN), TLS alert, protocol version (582):*
* error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol version
* Closing connection 0
curl: (35) error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol
version

-- 
thanks,
Anand.S

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Received on 2020-04-13