Re: ssl_pending returns 0 despite having data to read

[Ryan Murray <rjkmurray40@xxxxxxxxx>]

Situation maybe a security issue

Ryan Murray

On Jan 11, 2017 4:14 PM, "Ryan Murray" <rjkmurray40@xxxxxxxxx> wrote:

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@xxxxxxxxxxxx> 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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