Caswell
Sent: 01 May 2019 08:42
To: openssl-users@openssl.org
Subject: Re: SSL_read() returning SSL_ERROR_SYSCALL with errno 11EAGAIN
CAUTION: This email originated from outside of Synchronoss.
On 30/04/2019 23:37, Viktor Dukhovni wrote:
> On Tue, Apr 30, 2019 at 03:23:23PM -0700, Erik Forsberg wr
On 30/04/2019 23:37, Viktor Dukhovni wrote:
> On Tue, Apr 30, 2019 at 03:23:23PM -0700, Erik Forsberg wrote:
>
>>> Is the handshake explicit, or does the application just call
>>> SSL_read(), with OpenSSL performing the handshake as needed?
>>
>> I occasionally (somewhat rarely) see the issue
>-- Original Message --
>
>
>>-- Original Message --
>>
>>On Tue, Apr 30, 2019 at 03:23:23PM -0700, Erik Forsberg wrote:
>>
>>> >Is the handshake explicit, or does the application just call
>>> >SSL_read(), with OpenSSL performing the handshake as needed?
>>>
>>> I occasionally (somewhat
>-- Original Message --
>
>On Tue, Apr 30, 2019 at 03:23:23PM -0700, Erik Forsberg wrote:
>
>> >Is the handshake explicit, or does the application just call
>> >SSL_read(), with OpenSSL performing the handshake as needed?
>>
>> I occasionally (somewhat rarely) see the issue mentioned by the OP.
On Tue, Apr 30, 2019 at 03:23:23PM -0700, Erik Forsberg wrote:
> >Is the handshake explicit, or does the application just call
> >SSL_read(), with OpenSSL performing the handshake as needed?
>
> I occasionally (somewhat rarely) see the issue mentioned by the OP.
> Ignoring the error, or mapping
I can add some of my own observations to this below ...
>> I haven't looked at the code, but my impression is that WANT_READ and
>> WANT_WRITE are returned in two cases: when OpenSSL has received or sent a
>> partial record and needs to complete it; or when the TLS state is such that
>>
> On Apr 30, 2019, at 12:31 PM, Michael Wojcik
> wrote:
>
> I haven't seen a reply to this, so I'll take a stab...
>
> I haven't looked at the code, but my impression is that WANT_READ and
> WANT_WRITE are returned in two cases: when OpenSSL has received or sent a
> partial record and needs
> From: openssl-users on behalf of John
> Unsworth
> Sent: Monday, April 29, 2019 10:54
> We are using OpenSSL 1.1.0h on Linux to send operations to LDAP servers. We
> use SSL_read()
> to receive the replies on a non-blocking socket. The vast majority of times
> SSL_read() returns >0,
>
We are using OpenSSL 1.1.0h on Linux to send operations to LDAP servers. We use
SSL_read() to receive the replies on a non-blocking socket. The vast majority
of times SSL_read() returns >0, SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE as
per the spec. However we are very occasionally seeing
