if ( log.isDebugEnabled() ) {
                                log.debug(
                                    String.format(
                                        "Wrote %d bytes (%d chunks, last partial write %d)",
                                        r.getTotalBytesWritten(),
                                        r.getChunksWritten(),

                    len -= cnt;
                    off += cnt;
                }
                else {
                    if ( log.isTraceEnabled() ) {
                        log.trace(String.format("Wrote at %d remain %d off %d len %d", this.fp, len - w, off, w));
                    }
                    this.req.setParam(fh.getFid(), this.fp, len - w, b, off, w);
                    th.send(this.req, this.rsp);

                    }
                }
                if ( log.isDebugEnabled() ) {
                    log.debug("Failures " + failCount.get() + " wrote " + writeCount.get() + " read " + readCnt);
                }
                assertEquals("Read less than we wrote", writeCount.get(), readCnt);
                assertEquals(n, failCount.get() + writeCount.get());
            }
            finally {
                f.delete();

            log.trace(req.toString());
            log.trace(Hexdump.toHexString(this.sbuf, 4, n));
        }

        this.out.write(this.sbuf, 0, 4 + n);
        this.out.flush();
        log.trace("Wrote negotiate request");
        return n;
    }


    /**
     * @throws SocketException
     * @throws IOException
     */
    private void negotiatePeek () throws SocketException, IOException {