le_net API Reference

Interface name string length.

IP addr string's max length

IPv4 addr string's max length

IPv6 addr string's max length

Type for handler called when a server disconnects.

Backup the current default GW configs of the system, including both IPv4 and IPv6 as applicable. For each client application using this API to back up this system setting, only one backup copy is kept. When a client application makes a second call to this API, its first backup copy will be overwritten by the newer. Thus, le_net keeps one single backup copy per client application, and, thus, multiple backup copies altogether. They are kept in their LIFO (last-in-first-out) chronological order that the sequence for client applications to call le_net_RestoreDefaltGW() should be in the exact reverse order of their calling le_net_BackupDefaultGW() such that config backups and restorations happen in the correct LIFO manner.

Structure used to communitcate a channel's DNS Server address Structure used to communitcate a channel's Default Gateway Add or remove a route on the given channel according to the input flag in the last argument for the given destination address its given subnet's mask prefix length.

The channel reference in the first input argument identifies the network interface which a route is to be added onto or removed from. Whether the operation is an add or a remove depends on the isAdd boolean value of the last API input argument.

The IP address and subnet input arguments specify the destination address and subnet for the route. If it is a network route, the formats used for them are the same as used in the Linux command "route add -net <ipAddr>/<prefixLength> dev <netInterface>". If the route is a host route, the prefixLength input argument should be given as "" (i.e. a null string).

Note

The prefixLength parameter used to take a subnet mask (255.255.255.0) for IPv4 and prefix length for IPv6. Now it only takes prefix length, although compatibility code is present to make it compatible with previous API declaration. Providing a subnet mask is however deprecated and the compatibility code will be removed in a latter version.

Returns

• LE_OK upon success, otherwise another le_result_t failure code

Parameters

[in]	channelRef	the channel onto which the route change is made
[in]	destAddr	Destination IP address for the route
[in]	prefixLength	Destination's subnet prefix length
[in]	isAdd	the change is to add (true) or delete (false)

Connect the current client thread to the service providing this API. Block until the service is available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client Specific Functions.

This function is created automatically.

Disconnect the current client thread from the service providing this API.

Normally, this function doesn't need to be called. After this function is called, there's no longer a connection to the service, and the functions in this API can't be used. For details, see Client Specific Functions.

This function is created automatically.

Get the default GW address for the given data channel.

Note

Accomodates dual-stack IPv4/IPv6 addresses. If the default GW address only is only IPv4 or IPv6, but not both, the unused field of "addr" will be nulled.

Returns

• LE_OK upon success, otherwise LE_FAULT

Parameters

[in]	channelRef	Channel to retrieve GW addresses
[out]	addrPtr	Channel's Default GW addresses

Get the DNS server addresses for the given data channel retrieved from its technology

Note

Can accomodate up to two dual-stack DNS server addresses. In the case that there are more than two server addresses, the first two addresses of each IP version will be returned. If there are fewer than two dual-stack addresses, or contain only one type of IPv4 or IPv6 addresses, the unused portions of the passed structure will be nulled and returned.

Returns

• LE_OK upon success, otherwise LE_FAULT

Parameters

[in]	channelRef	Channel to retrieve DNS server addresses
[out]	addrPtr	DNS server addresses

Restore the default GW configs of the system to the last backed up ones, including IPv4 and/or IPv6 depending on whether this same client application has called le_net_SetDefaultGW() to change the system's IPv4 and/or IPv6 configs or not. The le_net interface remembers it and perform config restoration only as necessary when le_net_RestoreDefaultGW() is called. When le_net_BackupDefaultGW() is called, both IPv4 and IPv6 default GW configs are archived when present. As le_net keeps one single backup copy per client application, and, thus, multiple backup copies altogether, they are kept in their LIFO (last-in-first-out) chronological order that the sequence for client applications to call le_net_RestoreDefaltGW() should be in the exact reverse order of their calling le_net_BackupDefaultGW() such that config backups and restorations happen in the correct LIFO manner. If these applications do not follow this order, the le_net interface will first generate a warning in the system log and then still go ahead to restore the configs as directed. These applications hold the responsibility for the resulting routing configs on the device.

Remove the last added DNS addresses via the le_dcs_SetDNS API

Set the default GW addr for the given data channel retrieved from its technology

Returns

• LE_OK upon success, otherwise LE_FAULT

Parameters

[in]

channelRef

the channel on which interface its default GW addr is to be set

Set the DNS addresses for the given data channel retrieved from its technology

Returns

• LE_OK upon success, otherwise LE_FAULT

Parameters

[in]

channelRef

the channel from which the DNS addresses retrieved will be set into the system config

Set handler called when server disconnection is detected.

When a server connection is lost, call this handler then exit with LE_FATAL. If a program wants to continue without exiting, it should call longjmp() from inside the handler.

Try to connect the current client thread to the service providing this API. Return with an error if the service is not available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client Specific Functions.

This function is created automatically.

Returns

• LE_OK if the client connected successfully to the service.
• LE_UNAVAILABLE if the server is not currently offering the service to which the client is bound.
• LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
• LE_COMM_ERROR if the Service Directory cannot be reached.