On Mon, Jul 04, 2005, Klaus Thurnhofer wrote:
> Hi,
>
> I'm trying to save a session to a buffer, like it is proposed in several
> articles, using i2d_SSL_SESSION. However, when trying to restore the session
> from the ASN1 buffer it immediately returns with an error.
>
> from what I learned from the various articles and samples I feel that the
> following code snippet should restore what is available in "sess" into
> "sess2":
>
> int len;
> unsigned char *pp;
> int rc;
> SSL_SESSION *sess=NULL, *sess2=NULL;
>
> sess = SSL_get1_session( ssl );
> if( sess )
> {
> len = i2d_SSL_SESSION( sess, NULL );
> fprintf( stderr, "SESS: len=%d\n", len );
> pp = (unsigned char *)malloc( len );
> rc = i2d_SSL_SESSION( sess, &pp );
> fprintf( stderr, "SESS: converted to asn1, rc=%d\n", rc );
>
> sess2 = d2i_SSL_SESSION( NULL, &pp, len );
> fprintf( stderr, "SESS: new sess2=%x\n", sess2 );
> }
>
>
> however, the result I keep getting is a NULL pointer and a the ssl error
> message:
>
>
> there's not much comprehensive documentation about this topic and I'm sure I
> misunderstand something ... but "WHAT" do I misunderstand is the question???
>
> is there anyone out there who got this session saving stuff to work ... ???
>
You aren't calling the i2d function correctly. This is dealt with in the FAQ.
Steve.
--
Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage
OpenSSL project core developer and freelance consultant.
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