}
        } else if (messageOrClose == null) {
          return false // The queue is exhausted.
        }
      }
    }

    try {
      if (pong != null) {
        writer!!.writePong(pong)
      } else if (messageOrClose is Message) {
        val message = messageOrClose as Message
        writer!!.writeMessageFrame(message.formatOpcode, message.data)
        synchronized(this) {

			break
		}
		err = r.setErr(err, true)
		if r.block && (err == ErrIsFull || err == ErrTooMuchDataToWrite) {
			r.writeCond.Broadcast()
			r.readCond.Wait()
			p = p[n:]
			err = nil
			continue
		}
		break
	}
	if r.block && wrote > 0 {
		r.writeCond.Broadcast()
	}

	return wrote, r.setErr(err, true)
}

				time.Sleep(time.Duration(readRng.Intn(maxSleep)))
			}
		}
	}()

	// Writer
	{
		buf := make([]byte, 1024)
		writeRng := rand.New(rand.NewSource(2))
		for i := 0; i < 2500; i++ {
			writeRng.Read(buf)
			// Write
			n, err := rb.Write(buf[:writeRng.Intn(len(buf))])
			if err != nil {
				t.Fatalf("write failed: %v", err)
			}
			wroteBytes += n
			wrote.Write(buf[:n])

  @Throws(InterruptedException::class)
  fun writePingAndAwaitPong() {
    writePing()
    awaitPong()
  }

  /** For testing: sends a ping to be awaited with [awaitPong]. */
  @Throws(InterruptedException::class)
  fun writePing() {
    this.withLock {
      awaitPingsSent++
    }

    // 0x4f 0x4b 0x6f 0x6b is "OKok".
    writePing(false, AWAIT_PING, 0x4f4b6f6b)
  }

  /** For testing: awaits a pong. */

  private fun writeHeader(
    prefix: ByteString,
    upstreamSize: Long,
    metadataSize: Long,
  ) {
    val header =
      Buffer().apply {
        write(prefix)
        writeLong(upstreamSize)
        writeLong(metadataSize)
        require(size == FILE_HEADER_SIZE)
      }

    val fileOperator = FileOperator(file!!.channel)
    fileOperator.write(0, header, FILE_HEADER_SIZE)
  }

                    (targetInformation != null ? targetInformation.length : 0)];
            System.arraycopy(NTLMSSP_SIGNATURE, 0, type2, 0, 8);
            writeULong(type2, 8, 2);
            writeSecurityBuffer(type2, 12, data, target);
            writeULong(type2, 20, flags);
            System.arraycopy(challenge != null ? challenge : new byte[8], 0,
                    type2, 24, 8);

        pos += NTLMSSP_SIGNATURE.length;

        writeULong(type2, pos, NTLMSSP_TYPE2);
        pos += 4;

        // TargetNameFields
        int targetNameOff = writeSecurityBuffer(type2, pos, targetBytes);
        pos += 8;

        writeULong(type2, pos, flags);
        pos += 4;

        // ServerChallenge

        write( tmp, 0, 2 );
    }
    public final void writeInt( int v ) throws SmbException {
        Encdec.enc_uint32be( v, tmp, 0 );
        write( tmp, 0, 4 );
    }
    public final void writeLong( long v ) throws SmbException {
        Encdec.enc_uint64be( v, tmp, 0 );
        write( tmp, 0, 8 );
    }
    public final void writeFloat( float v ) throws SmbException {
        Encdec.enc_floatbe( v, tmp, 0 );

            byte[] type3 = new byte[64 + domainLength + userLength +
                    workstationLength + lmLength + ntLength + keyLength];
            System.arraycopy(NTLMSSP_SIGNATURE, 0, type3, 0, 8);
            writeULong(type3, 8, 3);
            int offset = 64;
            writeSecurityBuffer(type3, 12, offset, lmResponse);
            offset += lmLength;
            writeSecurityBuffer(type3, 20, offset, ntResponse);

          override fun decode(reader: DerReader): Long = reader.readLong()

          override fun encode(
            writer: DerWriter,
            value: Long,
          ) = writer.writeLong(value)
        },
    )

  val INTEGER_AS_BIG_INTEGER =
    BasicDerAdapter(
      name = "INTEGER",
      tagClass = DerHeader.TAG_CLASS_UNIVERSAL,
      tag = 2L,
      codec =