[openssl-users] ssl_pending returns 0 despite having data to read

[Ryan Murray]

Could you give me a hand on a issue I've seem to of picked up with my
device . You and the colleagues if possible. My SamsungGalaxy s2 tablet not
responding.  Power button and display goes black and does not turn on for a
period of time.  I believe the programs running in background or in a
rooted format has been making the device malfunction. Is there a remote
interface we could link up and establish what the heck is happening.  Lol
Your truly
Ryan

Ryan Murray

On Jan 11, 2017 4:08 PM, "Nadia Lapkovskaya" <nadia at yaymedia.com> wrote:

> Hi,
>
> We are using openssl-1.0.2j. Noticed, that for http protocol everything is
> working fine, but when we are using our own binary protocol ssl_pending
> returns 0 all the time. We are using blocking socket. Tried with
> SSL_CTX_set_read_ahead set and unset.
>
> Out test server sends back any info received from the client.
>
> Test code looks like this:
> bool write(const uint64_t* data, int count)
> {
>   int rc = SSL_write(_ssl, data, count * sizeof(uint64_t));
>   return rc > 0 ? true : false;
> }
>
> bool read(uint64_t* data, int count)
> {
>   do {
>       int rc = SSL_read(_ssl, data, count * sizeof(uint64_t));
>       if (rc <= 0) {
>           int err = SSL_get_error(_ssl, rc);
>           std::string errs = ERR_error_string(err, nullptr);
>           return false;
>       }
>   } while (SSL_pending(_ssl));
>   return true;
> }
>
> During first ssl_read we received eight bytes, and after that ssl_pending
> returns 0. If we continue reading despite having no pending data, ssl_read
> returns the rest of the data.
> Could you please suggest what is wrong here.
>
>
> Best regards,
> Nadia.
>
> --
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>
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