Intermittent SSL Handshake Errors

Richard Stanway r1ch+nginx at
Sat Jan 31 19:01:51 UTC 2015

> ...
> 2015/01/13 12:22:59 [crit] 11871#0: *140260577 SSL_do_handshake()
> failed (SSL: error:1408A0D7:SSL
> routines:SSL3_GET_CLIENT_HELLO:required cipher missing) while SSL
> handshaking, client: *.*.*.*, server:
According to the openssl code, this occurs when a client attempts to resume
a session that had made use of previously-enabled ciphers. If you're
changing your allowed ciphers frequently this could be why, otherwise a
full cycle of nginx to empty out the session cache seems like it should
resolve this.
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