SSL handshake failures when no data was sent over Twisted TLSConnection
问题 I start looking at implementing explicit FTP by extending the current Twisted FTP. Most of the code was straight forward and implementing AUTH, PBSZ, PROT was easy and I got a working secured control channel. My problem is with the data channel. The client side error is : SSL routines', 'SSL3_READ_BYTES', 'ssl handshake failure' It looks like SSL handshake and shutdown are called only when some data was send over the data channel. This affect the case when sending empty files or listing empty