在Windows 10上使用Curl 7.55.1尝试确认FTPS服务器正在使用TLSv1.2。 （如果有更好/更简便的方法，请随时告诉我）
我正在运行命令curl -v --insecure --tlsv1.2 ftps://[server:port]并收到以下响应：
* Trying [server]...
* TCP_NODELAY set
* Connected to [server] ([server]) port [port] (#0)
* schannel: SSL/TLS connection with [server] port [port] (step 1/3)
* schannel: checking server certificate revocation
* schannel: using IP address, SNI is not supported by OS.
* schannel: sending initial handshake data: sending 156 bytes...
* schannel: sent initial handshake data: sent 156 bytes
* schannel: SSL/TLS connection with [server] port [port] (step 2/3)
* schannel: encrypted data got 527
* schannel: encrypted data buffer: offset 527 length 4096
* schannel: next InitializeSecurityContext failed: SEC_E_INVALID_TOKEN (0x80090308) - The token supplied to the function is invalid
* Closing connection 0
* schannel: shutting down SSL/TLS connection with [server] port [port]
* schannel: clear security context handle
curl: (35) schannel: next InitializeSecurityContext failed: SEC_E_INVALID_TOKEN (0x80090308) - The token supplied to the function is invalid