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-****************************************
-:mod:`network` --- network configuration
-****************************************
-
-.. include:: ../templates/unsupported_in_circuitpython.inc
-
-.. module:: network
- :noindex:
- :synopsis: network configuration
-
-This module provides network drivers and routing configuration. To use this
-module, a MicroPython variant/build with network capabilities must be installed.
-Network drivers for specific hardware are available within this module and are
-used to configure hardware network interface(s). Network services provided
-by configured interfaces are then available for use via the :mod:`usocket`
-module.
-
-For example::
-
- # connect/ show IP config a specific network interface
- # see below for examples of specific drivers
- import network
- import utime
- nic = network.Driver(...)
- if not nic.isconnected():
- nic.connect()
- print("Waiting for connection...")
- while not nic.isconnected():
- utime.sleep(1)
- print(nic.ifconfig())
-
- # now use usocket as usual
- import usocket as socket
- addr = socket.getaddrinfo('micropython.org', 80)[0][-1]
- s = socket.socket()
- s.connect(addr)
- s.send(b'GET / HTTP/1.1\r\nHost: micropython.org\r\n\r\n')
- data = s.recv(1000)
- s.close()
-
-Common network adapter interface
-================================
-
-This section describes an (implied) abstract base class for all network
-interface classes implemented by ``MicroPython ports <MicroPython port>``
-for different hardware. This means that MicroPython does not actually
-provide ``AbstractNIC`` class, but any actual NIC class, as described
-in the following sections, implements methods as described here.
-
-.. class:: AbstractNIC(id=None, ...)
-
-Instantiate a network interface object. Parameters are network interface
-dependent. If there are more than one interface of the same type, the first
-parameter should be `id`.
-
- .. method:: active([is_active])
-
- Activate ("up") or deactivate ("down") the network interface, if
- a boolean argument is passed. Otherwise, query current state if
- no argument is provided. Most other methods require an active
- interface (behavior of calling them on inactive interface is
- undefined).
-
- .. method:: connect([service_id, key=None, \*, ...])
-
- Connect the interface to a network. This method is optional, and
- available only for interfaces which are not "always connected".
- If no parameters are given, connect to the default (or the only)
- service. If a single parameter is given, it is the primary identifier
- of a service to connect to. It may be accompanied by a key
- (password) required to access said service. There can be further
- arbitrary keyword-only parameters, depending on the networking medium
- type and/or particular device. Parameters can be used to: a)
- specify alternative service identifier types; b) provide additional
- connection parameters. For various medium types, there are different
- sets of predefined/recommended parameters, among them:
-
- * WiFi: *bssid* keyword to connect to a specific BSSID (MAC address)
-
- .. method:: disconnect()
-
- Disconnect from network.
-
- .. method:: isconnected()
-
- Returns ``True`` if connected to network, otherwise returns ``False``.
-
- .. method:: scan(\*, ...)
-
- Scan for the available network services/connections. Returns a
- list of tuples with discovered service parameters. For various
- network media, there are different variants of predefined/
- recommended tuple formats, among them:
-
- * WiFi: (ssid, bssid, channel, RSSI, authmode, hidden). There
- may be further fields, specific to a particular device.
-
- The function may accept additional keyword arguments to filter scan
- results (e.g. scan for a particular service, on a particular channel,
- for services of a particular set, etc.), and to affect scan
- duration and other parameters. Where possible, parameter names
- should match those in connect().
-
- .. method:: status()
-
- Return detailed status of the interface, values are dependent
- on the network medium/technology.
-
- .. method:: ifconfig([(ip, subnet, gateway, dns)])
-
- Get/set IP-level network interface parameters: IP address, subnet mask,
- gateway and DNS server. When called with no arguments, this method returns
- a 4-tuple with the above information. To set the above values, pass a
- 4-tuple with the required information. For example::
-
- nic.ifconfig(('192.168.0.4', '255.255.255.0', '192.168.0.1', '8.8.8.8'))
-
- .. method:: config('param')
- config(param=value, ...)
-
- Get or set general network interface parameters. These methods allow to work
- with additional parameters beyond standard IP configuration (as dealt with by
- `ifconfig()`). These include network-specific and hardware-specific
- parameters and status values. For setting parameters, the keyword argument
- syntax should be used, and multiple parameters can be set at once. For
- querying, a parameter name should be quoted as a string, and only one
- parameter can be queried at a time::
-
- # Set WiFi access point name (formally known as ESSID) and WiFi channel
- ap.config(essid='My AP', channel=11)
- # Query params one by one
- print(ap.config('essid'))
- print(ap.config('channel'))
- # Extended status information also available this way
- print(sta.config('rssi'))
-
-.. _network.WLAN:
-
-Functions
-=========
-
-.. function:: phy_mode([mode])
-
- Get or set the PHY mode.
-
- If the *mode* parameter is provided, sets the mode to its value. If
- the function is called without parameters, returns the current mode.
-
- The possible modes are defined as constants:
- * ``MODE_11B`` -- IEEE 802.11b,
- * ``MODE_11G`` -- IEEE 802.11g,
- * ``MODE_11N`` -- IEEE 802.11n.
-
-class WLAN
-==========
-
-This class provides a driver for WiFi network processor in the ESP8266. Example usage::
-
- import network
- # enable station interface and connect to WiFi access point
- nic = network.WLAN(network.STA_IF)
- nic.active(True)
- nic.connect('your-ssid', 'your-password')
- # now use sockets as usual
-
-Constructors
-------------
-.. class:: WLAN(interface_id)
-
-Create a WLAN network interface object. Supported interfaces are
-``network.STA_IF`` (station aka client, connects to upstream WiFi access
-points) and ``network.AP_IF`` (access point, allows other WiFi clients to
-connect). Availability of the methods below depends on interface type.
-For example, only STA interface may `connect()` to an access point.
-
-Methods
--------
-
-.. method:: wlan.active([is_active])
-
- Activate ("up") or deactivate ("down") network interface, if boolean
- argument is passed. Otherwise, query current state if no argument is
- provided. Most other methods require active interface.
-
-.. method:: wlan.connect(ssid=None, password=None, \*, bssid=None)
-
- Connect to the specified wireless network, using the specified password.
- If *bssid* is given then the connection will be restricted to the
- access-point with that MAC address (the *ssid* must also be specified
- in this case).
-
-.. method:: wlan.disconnect()
-
- Disconnect from the currently connected wireless network.
-
-.. method:: wlan.scan()
-
- Scan for the available wireless networks.
-
- Scanning is only possible on STA interface. Returns list of tuples with
- the information about WiFi access points:
-
- (ssid, bssid, channel, RSSI, authmode, hidden)
-
- *bssid* is hardware address of an access point, in binary form, returned as
- bytes object. You can use `binascii.hexlify()` to convert it to ASCII form.
-
- There are five values for authmode:
-
- * 0 -- open
- * 1 -- WEP
- * 2 -- WPA-PSK
- * 3 -- WPA2-PSK
- * 4 -- WPA/WPA2-PSK
-
- and two for hidden:
-
- * 0 -- visible
- * 1 -- hidden
-
-.. method:: wlan.status()
-
- Return the current status of the wireless connection.
-
- The possible statuses are defined as constants:
-
- * ``STAT_IDLE`` -- no connection and no activity,
- * ``STAT_CONNECTING`` -- connecting in progress,
- * ``STAT_WRONG_PASSWORD`` -- failed due to incorrect password,
- * ``STAT_NO_AP_FOUND`` -- failed because no access point replied,
- * ``STAT_CONNECT_FAIL`` -- failed due to other problems,
- * ``STAT_GOT_IP`` -- connection successful.
-
-.. method:: wlan.isconnected()
-
- In case of STA mode, returns ``True`` if connected to a WiFi access
- point and has a valid IP address. In AP mode returns ``True`` when a
- station is connected. Returns ``False`` otherwise.
-
-.. method:: wlan.ifconfig([(ip, subnet, gateway, dns)])
-
- Get/set IP-level network interface parameters: IP address, subnet mask,
- gateway and DNS server. When called with no arguments, this method returns
- a 4-tuple with the above information. To set the above values, pass a
- 4-tuple with the required information. For example::
-
- nic.ifconfig(('192.168.0.4', '255.255.255.0', '192.168.0.1', '8.8.8.8'))
-
-.. method:: wlan.config('param')
- wlan.config(param=value, ...)
-
- Get or set general network interface parameters. These methods allow to work
- with additional parameters beyond standard IP configuration (as dealt with by
- `wlan.ifconfig()`). These include network-specific and hardware-specific
- parameters. For setting parameters, keyword argument syntax should be used,
- multiple parameters can be set at once. For querying, parameters name should
- be quoted as a string, and only one parameter can be queries at time::
-
- # Set WiFi access point name (formally known as ESSID) and WiFi channel
- ap.config(essid='My AP', channel=11)
- # Query params one by one
- print(ap.config('essid'))
- print(ap.config('channel'))
-
- Following are commonly supported parameters (availability of a specific parameter
- depends on network technology type, driver, and ``MicroPython port``).
-
- ============= ===========
- Parameter Description
- ============= ===========
- mac MAC address (bytes)
- essid WiFi access point name (string)
- channel WiFi channel (integer)
- hidden Whether ESSID is hidden (boolean)
- authmode Authentication mode supported (enumeration, see module constants)
- password Access password (string)
- dhcp_hostname The DHCP hostname to use
- ============= ===========