Re: [boost] [asio] SSL operation sporadically returns "Access is denied"

From: Christopher Kohlhoff (chris_at_[hidden])
Date: 2006-09-18 10:25:36

Hi Scott,

Scott <cheesy4poofs_at_[hidden]> wrote:
> When the error occurs, here's the values I'm seeing going from
> top to bottom:
>
>     int rc = primitive_( session_ );            // -1
>     int sys_error_code = (int)ERR_get_error();  // 0
>     bool is_operation_done = (rc > 0);          // false
>     int error_code =  !is_operation_done ?      // 5
>     bool is_read_needed = (error_code == SSL_ERROR_WANT_READ);
>     // false
>     bool is_write_needed = (error_code == SSL_ERROR_WANT_WRITE
>     ||  // false
>     bool is_shut_down_received =   // false
>     bool is_shut_down_sent =       // false

OK, this is not quite what I expected :( I had a skim through
the openssl source but couldn't find why using the openssl API
in non-blocking mode should return SSL_ERROR_SYSCALL.

It's a bit hard to know where to go next without access to a
reproducible test case. You might try adding some debug tracing
that prints the amount of data that passed in and out of the
BIO_write and BIO_read calls to see if anything looks wrong.

Cheers,
Chris