Hostname translation callback (for use with gethostbyname_async()).

Callback will be called after DNS resolution completes or a failure occurs.

Note

Callback should not take more than 10ms to execute, otherwise it might prevent underlying thread processing. A portable user of the callback should not make calls to network operations due to stack size limitations. The callback should not perform expensive operations such as socket recv/send calls or blocking operations.

Parameters

result	NSAPI_ERROR_OK on success, negative error code on failure.
address	On success, destination for the host SocketAddress.

Definition at line 219 of file NetworkInterface.h.

Add a domain name server to list of servers to query.

Parameters

address

Address for the dns host.

Returns

NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

Add event listener for interface.

This API allows multiple callback to be registered for a single interface. When first called, internal list of event handlers are created and registered to interface through attach() API.

Application may only use attach() or add_event_listener() interface. Mixing usage of both leads to undefined behavior.

Parameters

status_cb

The callback for status changes.

Register callback for status reporting.

Parameters

status_cb

The callback for status changes

Reimplemented from NetworkInterface.

Register callback for status reporting.

The specified status callback function will be called on status changes on the network. The parameters on the callback are the event type and event-type dependent reason parameter. Only one callback can be registered at a time.

To unregister a callback call with status_cb parameter as a zero.

NOTE: Any callbacks registered with this function will be overwritten if add_event_listener() API is used.

Parameters

status_cb

The callback for status changes.

Reimplemented in CellularContext, EMACInterface, L3IPInterface, InterfaceNanostack, PPPInterface, and AT_CellularContext.

Return pointer to a CellularInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Deprecated:

CellularBase migrated to CellularInterface - use cellularInterface()

Reimplemented in CellularInterface.

Definition at line 347 of file NetworkInterface.h.

Return pointer to a CellularInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in CellularInterface.

Definition at line 424 of file NetworkInterface.h.

Start the interface.

Attempts to connect to a WiFi network. Requires ssid and passphrase to be set. If passphrase is invalid, NSAPI_ERROR_AUTH_ERROR is returned.

Returns

0 on success, negative error code on failure

Reimplemented from EMACInterface.

Start the interface.

Attempts to connect to a WiFi network.

Parameters

ssid	Name of the network to connect to
pass	Security passphrase to connect to the network
security	Type of encryption for connection (Default: NSAPI_SECURITY_NONE)
channel	This parameter is not supported, setting it to anything else than 0 will result in NSAPI_ERROR_UNSUPPORTED

Returns

0 on success, or error code on failure

Implements WiFiInterface.

Stop the interface.

Returns

0 on success, negative on failure

Reimplemented from EMACInterface.

Return pointer to an EMACInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented from NetworkInterface.

Definition at line 163 of file EMACInterface.h.

Return pointer to an EMACInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in EMACInterface.

Definition at line 355 of file NetworkInterface.h.

Return pointer to an EthInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in EthInterface.

Definition at line 321 of file NetworkInterface.h.

Get the connection status.

Returns

The connection status according to nsapi_connection_status_t

Reimplemented from NetworkInterface.

Get the connection status.

Returns

The connection status (

See also

nsapi_types.h).

Reimplemented in EMACInterface, L3IPInterface, InterfaceNanostack, PPPInterface, and AT_CellularContext.

Provide access to the EMAC.

This should be used with care - normally the network stack would control the EMAC, so manipulating the EMAC while the stack is also using it (ie after connect) will likely cause problems.

Returns

Reference to the EMAC in use

Definition at line 158 of file EMACInterface.h.

Get the local gateways.

Returns

Null-terminated representation of the local gateway or null if no network mask has been received

Reimplemented from NetworkInterface.

Get the local gateway.

Returns

Null-terminated representation of the local gateway or null if no network mask has been received.

Reimplemented in CellularContext, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

Get the network interface name.

Returns

Null-terminated representation of the network interface name or null if interface not exists

Reimplemented from NetworkInterface.

Get the network interface name.

Returns

Null-terminated representation of the network interface name or null if interface not exists

Reimplemented in EMACInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

Get the local IP address.

Returns

Null-terminated representation of the local IP address or null if no IP address has been received

Reimplemented from NetworkInterface.

Get the local IP address.

Returns

Null-terminated representation of the local IP address or null if not yet connected

Reimplemented in CellularContext, InterfaceNanostack, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

Get the local MAC address.

Provided MAC address is intended for info or debug purposes and may not be provided if the underlying network interface does not provide a MAC address

Returns

Null-terminated representation of the local MAC address or null if no MAC address is available

Reimplemented from NetworkInterface.

Get the local MAC address.

Provided MAC address is intended for info or debug purposes and may be not provided if the underlying network interface does not provide a MAC address.

Returns

Null-terminated representation of the local MAC address or null if no MAC address is available.

Reimplemented in InterfaceNanostack, and EMACInterface.

Get the local network mask.

Returns

Null-terminated representation of the local network mask or null if no network mask has been received

Reimplemented from NetworkInterface.

Get the local network mask.

Returns

Null-terminated representation of the local network mask or null if no network mask has been received.

Reimplemented in CellularContext, EMACInterface, CellularInterface, L3IPInterface, PPPInterface, and AT_CellularContext.

Gets the current radio signal strength for active connection.

Returns

Connection strength in dBm (negative value)

Implements WiFiInterface.

Provide access to the underlying stack.

Returns

The underlying network stack

Translate a hostname to an IP address with specific version using network interface name.

The hostname may be either a domain name or an IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Parameters

host	Hostname to resolve.
address	Pointer to a SocketAddress to store the result.
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).
interface_name	Network interface name

Returns

NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

Translate a hostname to an IP address (asynchronous) using network interface name.

The hostname may be either a domain name or a dotted IP address. If the hostname is an IP address, no network transactions will be performed.

If no stack-specific DNS resolution is provided, the hostname will be resolve using a UDP socket on the stack.

Call is non-blocking. Result of the DNS operation is returned by the callback. If this function returns failure, callback will not be called. In case result is success (IP address was found from DNS cache), callback will be called before function returns.

Parameters

host	Hostname to resolve.
callback	Callback that is called for result.
version	IP version of address to resolve, NSAPI_UNSPEC indicates version is chosen by the stack (defaults to NSAPI_UNSPEC).
interface_name	Network interface name

Returns

0 on immediate success, negative error code on immediate failure or a positive unique id that represents the hostname translation operation and can be passed to cancel.

Implements DNS.

Cancel asynchronous hostname translation.

When translation is cancelled, callback will not be called.

Parameters

id	Unique id of the hostname translation operation (returned by gethostbyname_async)

Returns

NSAPI_ERROR_OK on success, negative error code on failure.

Implements DNS.

Return pointer to a MeshInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented in MeshInterface.

Definition at line 337 of file NetworkInterface.h.

Network stack is resuming.

Returns

0 if successful

Definition at line 236 of file WhdSTAInterface.h.

Network stack is suspended.

Returns

0 if successful

Definition at line 226 of file WhdSTAInterface.h.

Remove event listener from interface.

Remove previously added callback from the handler list.

Parameters

status_cb

The callback to unregister.

Scan for available networks.

Note

This is a blocking function.

If the count is 0, the function only returns the number of available networks. If the count is greater than 0 and the res is not NULL, the array of discovered APs is populated with discovered networks up to the value of the count.

Parameters

res	Pointer to allocated array to store discovered APs.
count	Size of allocated res array, or 0 to only count available APs.

Returns

Number of entries in res, or if count was 0, number of available networks. Negative on error (

See also

nsapi_types.h for nsapi_error).

Implemented in RDAWiFiInterface.

Scan for available networks in WiFiAccessPoint format.

This function will block.

Parameters

ap	Pointer to allocated array of WiFiAccessPoint format for discovered AP
count	Size of allocated res array, or 0 to only count available AP
timeout	Timeout in milliseconds; 0 for no timeout (Default: 0)

Returns

Number of entries in , or if count was 0 number of available networks, negative on error see nsapi_error

Scan for available networks in WhdAccessPoint format.

This function will block.

Parameters

ap	Pointer to allocated array of WhdAccessPoint format for discovered AP
count	Size of allocated res array, or 0 to only count available AP
timeout	Timeout in milliseconds; 0 for no timeout (Default: 0)

Returns

Number of entries in , or if count was 0 number of available networks, negative on error see nsapi_error

Set network interface as default one.

Reimplemented in EMACInterface, L3IPInterface, and PPPInterface.

Set the network interface as default one.

Reimplemented from NetworkInterface.

Set blocking status of interface.

Nonblocking mode unsupported.

Parameters

blocking

true if connect is blocking

Returns

0 on success, negative error code on failure

Reimplemented from EMACInterface.

Definition at line 128 of file WhdSTAInterface.h.

Set the WiFi network channel - NOT SUPPORTED.

This function is not supported and will return NSAPI_ERROR_UNSUPPORTED

Parameters

channel

Channel on which the connection is to be made, or 0 for any (Default: 0)

Returns

Not supported, returns NSAPI_ERROR_UNSUPPORTED

Implements WiFiInterface.

Definition at line 113 of file WhdSTAInterface.h.

Set the WiFi network credentials.

Parameters

ssid	Name of the network to connect to
pass	Security passphrase to connect to the network
security	Type of encryption for connection (defaults to NSAPI_SECURITY_NONE)

Returns

0 on success, or error code on failure

Implements WiFiInterface.

defined(DOXYGEN_ONLY)

Set default parameters on a Wi-Fi interface.

A Wi-Fi interface instantiated directly or using WiFiInterface::get_default_instance() is initially unconfigured. This call can be used to set the default parameters that would have been set if the interface had been requested using NetworkInterface::get_default_instance() (see nsapi JSON configuration).

Reimplemented from NetworkInterface.

Enable or disable DHCP on the network.

Requires that the network is disconnected

Parameters

dhcp	False to disable dhcp (defaults to enabled)

Returns

0 on success, negative error code on failure

Reimplemented from NetworkInterface.

Enable or disable DHCP on connecting the network.

Enabled by default unless a static IP address has been assigned. Requires that the network is disconnected.

Parameters

dhcp	True to enable DHCP.

Returns

NSAPI_ERROR_OK on success, negative error code on failure.

Reimplemented in EMACInterface, and L3IPInterface.

Set a static IP address.

Configures this network interface to use a static IP address. Implicitly disables DHCP, which can be enabled in set_dhcp. Requires that the network is disconnected.

Parameters

ip_address	Null-terminated representation of the local IP address
netmask	Null-terminated representation of the local network mask
gateway	Null-terminated representation of the local gateway

Returns

0 on success, negative error code on failure

Reimplemented from NetworkInterface.

Configure this network interface to use a static IP address.

Implicitly disables DHCP, which can be enabled in set_dhcp. Requires that the network is disconnected.

Parameters

ip_address	Null-terminated representation of the local IP address
netmask	Null-terminated representation of the local network mask
gateway	Null-terminated representation of the local gateway

Returns

NSAPI_ERROR_OK on success, negative error code on failure

Reimplemented in EMACInterface, L3IPInterface, and PPPInterface.

Set Offload Manager Information NOTE: Only allowed while disconnected.

Parameters

olm	Offload Manager info structure

Returns

true if completed successfully false if Interface is connected

Definition at line 213 of file WhdSTAInterface.h.

Return pointer to a WiFiInterface.

Returns

Pointer to requested interface type or NULL if this class doesn't implement the interface.

Reimplemented from NetworkInterface.

Definition at line 109 of file WiFiInterface.h.