n = in.read(b, off + i, len - i);
            if ( n <= 0 ) {
                break;
            }
            i += n;
        }

        return i;
    }


    static int readPacketType ( InputStream in, byte[] buffer, int bufferIndex ) throws IOException {
        int n;
        if ( ( n = readn(in, buffer, bufferIndex, HEADER_LENGTH) ) != HEADER_LENGTH ) {
            if ( n == -1 ) {

                len -= n;
                bip -= n;
                if( len == 0 ) {
                    return tot;
                }
            }

            switch( SessionServicePacket.readPacketType( in, header, 0 )) {
                case SessionServicePacket.SESSION_KEEP_ALIVE:
                    break;
                case SessionServicePacket.SESSION_MESSAGE:

            n = in.read( b, off + i, len - i );
            if (n <= 0) {
                break;
            }
            i += n;
        }

        return i;
    }
    static int readPacketType( InputStream in,
                                    byte[] buffer,
                                    int bufferIndex )
                                    throws IOException {
        int n;

            out.write( buffer, 0, ssp0.writeWireFormat( buffer, 0 ));

            setSoTimeout( soTimeout );
            type = ssp0.readPacketType( in, buffer, 0 );
        } catch( IOException ioe ) {
            close();
            throw ioe;
        }

        switch( type ) {
            case SessionServicePacket.POSITIVE_SESSION_RESPONSE: