+=head2 C<len>
+
+The length of the currently posted message.
+
+=cut
+
+sub len {
+ my ($self) = @_;
+ _check_self($self);
+ return $self->{len};
+}
+
+=head2 C<pos>
+
+The number of bits that have already been sent for the current message.
+
+=cut
+
+sub pos {
+ my ($self) = @_;
+ _check_self($self);
+ return $self->{pos};
+}
+