Performs a certificate verification on the OpenSSL::X509::Certificate cert.
chain can be an array of OpenSSL::X509::Certificate that is used to construct the certificate chain.
If a block is given, it overrides the callback set by verify_callback=.
After finishing the verification, the error information can be retrieved by error, error_string, and the resulting complete certificate chain can be retrieved by chain.
Restore session state from the session’s FileStore file.
Returns the session state as a hash.
Restore (empty) session state.
Restore session state from the session’s PStore file.
Returns the session state as a hash.
Returns true if the listing commands, LIST, NLST, and MLSD are applied to the directory.
Returns true if the STOR command may be applied to the file.
Determines whether the response received was a Positive Intermediate reply (3xx reply code)