/*
 * call-seq:
 *  conn.protocol_version -> Integer
 *
 * The 3.0 protocol will normally be used when communicating with PostgreSQL 7.4 or later servers; pre-7.4 servers support only protocol 2.0. (Protocol 1.0 is obsolete and not supported by libpq.)
 */
static VALUE
pgconn_protocol_version(obj)
    VALUE obj;
{
    return INT2NUM(PQprotocolVersion(get_pgconn(obj)));
}