-----------------------------------------------------------------
handlersocket_verbose (default = 10, min = 0, max = 10000)

  Specify the logging verboseness.

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handlersocket_address (default = '')

  Specify the address to bind. If empty, it binds to 0.0.0.0.

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handlersocket_port (default = '9998')

  Specify the port to bind. This option is for the listener for
  read requests. If empty, the listener is disabled.

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handlersocket_port_wr (default = '9999')

  Specify the port to bind. This option is for the listener for
  write requests. If empty, the listener is disabled.

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handlersocket_epoll (default = 1, min = 0, max = 1)

  Specify whether handlersocket uses epoll for I/O multiplexing.

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handlersocket_threads (default = 16, min = 1, max = 3000)

  Specify the number of handlersocket worker threads. This option
  is for the listener for read requests. Recommended value is
  (the number of CPU cores * 2).

-----------------------------------------------------------------
handlersocket_threads_wr (default = 1, min = 1, max = 3000)

  Specify the number of handlersocket worker threads. This option
  is for the listener for write requests. Recommended value is 1.

-----------------------------------------------------------------
handlersocket_timeout (default = 300, min = 30, max = 3600)

  Specify the socket timeout in seconds.

-----------------------------------------------------------------
handlersocket_backlog (default = 32768, min = 5, max = 1000000)

  Specify the length of the listen backlog.

-----------------------------------------------------------------
handlersocket_sndbuf (default = 0, min = 0, max = 1677216)

  Specify the maximum socket send buffer in bytes. If 0, the
  system-wide default value is set.

-----------------------------------------------------------------
handlersocket_rcvbuf (default = 0, min = 0, max = 1677216)

  Specify the maximum socket receive buffer in bytes. If 0, the
  system-wide default value is set.

-----------------------------------------------------------------
handlersocket_readsize (default = 0, min = 0, max = 1677216)

  Specify the minimum length of the handlersocket request buffer.
  Larger value can make handlersocket faster for large requests,
  but can consume memory. The default value is possibly 4096.

-----------------------------------------------------------------
handlersocket_accept_balance (default = 0, min = 0, max = 10000)

  When this option is set to non-zero, handlersocket tries to
  balance accepted connections among threads. Non-zero is
  recommended if you use persistent connections (i.e., connection
  pooling on the client side).

-----------------------------------------------------------------
handlersocket_wrlock_timeout (default = 12, min = 0, max = 3600)

  Specify the lock timeout in seconds. When a write request is
  performed, handlersocket acquires an advisory lock named
  'handlersocket_wr'. This option sets the timeout for the
  locking.

-----------------------------------------------------------------
handlersocket_plain_secret (default = '')

  When this option is specified, a plain-text authentication is
  enabled for the listener for read requests. This option
  specifies the secret key for the authentication.

-----------------------------------------------------------------
handlersocket_plain_secret_wr (default = '')

  This option specifies the secret key for the listener for write
  requests.