On 10/8/2017 5:58 PM, Kyle Hamilton wrote:
Do you have a reference to what should be done instead?
My understanding of what happens with blocking sockets is that
SSL_read() will return SSL_ERROR_WANT_READ if it needs additional data
read from a socket that doesn't have it available (and will ret
Important caveat: SSL_read() and SSL_write() don't directly return
SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE. Those values are returned
by SSL_get_error().
I apologize for the misstatement.
-Kyle H
On Sun, Oct 8, 2017 at 5:58 PM, Kyle Hamilton wrote:
> Do you have a reference to what should
Do you have a reference to what should be done instead?
My understanding of what happens with blocking sockets is that
SSL_read() will return SSL_ERROR_WANT_READ if it needs additional data
read from a socket that doesn't have it available (and will return
SSL_ERROR_WANT_WRITE if it needs to write
In short ssl is not the same as a raw socket fd because of the intervening
protocol.
That's all
Original Message
From: michel.sa...@free.fr
Sent: October 8, 2017 4:34 PM
To: openssl-users@openssl.org
Reply-to: openssl-users@openssl.org
Subject: Re: [openssl-users] Graceful shutdown of T
Hi Thomas,
I do not think that non-blocking code is hard to implement, but I am not
still convinced there is not some kind of confusion here.
Pardon me if I do not understand well your reasoning, but I just want to
highlight that SSL_read() contract is not to return TCP data, but SSL/TLS
data (if
On 10/8/2017 7:28 AM, Michel wrote:
While I understand that using non-blocking descriptors is a better practice,
I still do not see why select() should NEVER be used for blocking sockets
(except when combined/interfered with the internal OpenSSL state machine or
equivalent mechanism).
Could you
While I understand that using non-blocking descriptors is a better practice,
I still do not see why select() should NEVER be used for blocking sockets
(except when combined/interfered with the internal OpenSSL state machine or
equivalent mechanism).
Could you please elaborate or give an example ?
On 10/8/2017 4:17 AM, Kyle Hamilton wrote:
The way to handle this situation is simply to never enter SSL_read() if
there isn't anything to read on the socket. select() or pselect() are your
friends, here, because they'll tell you if there's data to read from the
underlying file descriptor.
I ho
The way to handle this situation is simply to never enter SSL_read() if
there isn't anything to read on the socket. select() or pselect() are your
friends, here, because they'll tell you if there's data to read from the
underlying file descriptor.
I hope this helps!
-Kyle H
On Oct 5, 2017 02:58
