NOTE: Gecko is a fast evolving project. Please check dom/network/interfaces/nsIDOMNetworkStatsManager.idl to make sure this data is accurate.
nsISupports
Last changed in Gecko 18.0 (Firefox 18.0 / Thunderbird 18.0 / SeaMonkey 2.15)Implemented by: @mozilla.org/networkStatsManager;1
. To create an instance, use:
var networkStatsManager = Components.classes["@mozilla.org/networkStatsManager;1"] .createInstance(Components.interfaces.nsIDOMNetworkStatsManager);
Furthermore, the NetworkStatsManager is published through a mozNetworkStats
child object within the navigator
object. If the object exists, you can use the Network Statistics service. You can test for the presence of the service as follows, for example:
if ("mozNetworkStats" in navigator) { /* NetworkStats is available */ } else { alert("I'm sorry, but NetworkStats services are not supported."); }
Method overview
nsIDOMDOMRequest getSamples(in nsISupports network, |
nsIDOMDOMRequest addAlarm(in nsISupports network, |
nsIDOMDOMRequest getAllAlarms([optional] in nsISupports network); |
nsIDOMDOMRequest removeAlarms([optional] in long alarmId); |
nsIDOMDOMRequest clearStats(in nsISupports network); |
nsIDOMDOMRequest clearAllStats(); |
nsIDOMDOMRequest getAvailableNetworks(); |
nsIDOMDOMRequest getAvailableServiceTypes(); |
Attributes
Attribute | Type | Description |
sampleRate |
long |
Minimum time in milliseconds between samples stored in the database. Read only. |
maxStorageAge |
long long |
Time in milliseconds recorded by the API until present time. All samples older than maxStorageAge from now are deleted. Read only. |
Constants
Constant | Type | Description |
---|---|---|
WIFI | long | Constant for WIFI, set to 0 |
MOBILE | long | Constant for MOBILE, set to 1 |
Methods
getSamples()
Asynchronously queries network interface statistics. The query may be filtered by connection type and date.
nsIDOMDOMRequest getSamples(in nsISupports network,
in jsval start,
in jsval end,
[optional] in jsval options /* NetworkStatsGetOptions */);
Parameters
network
- The origin of the data. It can specify wifi, mobile, or null. If null, data measurement from both origins are merged. To know in advance which kind of origin is available, the MozNetworkStatsManager.getAvailableNetworks method returns an Array of interfaces.
start
- A Date object representing the beginning of data measurement.
end
- A Date object representing the end of data measurement.
options
Optional- Filtering options.
NetworkStatsGetOptions
is a dictionary object providing filtering options.
Return value
An nsIDOMDOMRequest
object. If successful, the request result is an nsIDOMMozNetworkStats
object describing the network statistics. If network stats are not available for some dates, then rxBytes
and txBytes
are undefined for those dates. If the filtering start date is greater than the end date, an exception is thrown.
Exceptions thrown
NS_ERROR_INVALID_ARG
- The filtering
start
date is greater than theend
date. NS_ERROR_NOT_IMPLMENTED
- Both appManifestURL and serviceType are specified at the same time in the NetworkStatsGetOptions dictionary.
InvalidNetwork
- The network must be in the return of getAvailableNetworks.
addAlarm()
Install an alarm on a network. When total data usage reaches threshold
bytes, a "networkstats-alarm" system message is sent to the application, where the optional parameter data
must be a cloneable object.
nsIDOMDOMRequest addAlarm(in nsISupports network, in long threshold, [optional] in jsval options /* NetworkStatsAlarmOptions */);
Parameters
network
- The origin of the data. It can specify wifi, mobile, or null. If null, data measurement from both origins are merged. To know in advance which kind of origin is available, the MozNetworkStatsManager.getAvailableNetworks method returns an Array of interfaces.
threshold
- The total data usage threshold in bytes.
options
Optional- Filtering options.
- NetworkStatsAlarmOptions is a dictionary object providing filtering options.
Return Value
An nsIDOMDOMRequest
object. If successful, the result
field of the DOMRequest keeps the alarm Id.
Exceptions Thrown
- InvalidNetwork
- The
network
must be in the return of getAvailableNetworks.
getAllAlarms()
Obtain all alarms for those networks returned by getAvailableNetworks. If a network is provided, only retrieves the alarms for that network.
nsIDOMDOMRequest getAllAlarms([optional] in nsISupports network);
Parameters
network
Optional- The origin of the data. It can specify wifi, mobile, or null. If null, data measurement from both origins are merged. To know in advance which kind of origin is available, the MozNetworkStatsManager.getAvailableNetworks method returns an Array of interfaces.
Return Value
An Alarm object with the same fields as that in the system message; alarmId, network, threshold, and data.
Exceptions Thrown
- InvalidNetwork
- The network must be in the return of getAvailableNetworks.
removeAlarms()
Remove all network alarms. If an alarmId
is provided, then only that alarm is removed.
nsIDOMDOMRequest removeAlarms([optional] in long alarmId);
Parameters
alarmID
- ID of an alarm, like the one returned by addAlarm.
Return Value
An nsIDOMDOMRequest
object.
clearStats()
Remove all stats related with the provided network from DB.
nsIDOMDOMRequest clearStats(in nsISupports network);
Parameters
network
- The origin of the data. It can specify wifi, mobile, or null. If null, data measurement from both origins are merged. To know in advance which kind of origin is available, the MozNetworkStatsManager.getAvailableNetworks method returns an Array of interfaces.
Return Value
An nsIDOMDOMRequest
object.
clearAllStats()
Clears all statistics from the statistics database.
void clearAllStats();
Parameters
None.
Return Value
An nsIDOMDOMRequest
object.
getAvailableNetworks()
Returns available networks that used to be saved in the database.
nsIDOMDOMRequest getAvailableNetworks();
Parameters
None.
Return Value
An nsIDOMDOMRequest
object. If successful, the result field of the DOMRequest holds an array of the currently available network interfaces.
getAvailableServiceTypes()
Returns available service types that used to be saved in the database.
nsIDOMDOMRequest getAvailableServiceTypes();
Parameters
None.
Return Value
An nsIDOMDOMRequest
object. If successful, the result field of the DOMRequest holds an array of the currently available service types.
NetworkStatsAlarmOptions
NetworkStatsAlarmOptions
is a dictionary object used to filter an alarm request made when calling addAlarm()
. It contains the following fields:
startTime
- A Date object representing the start time.
data
- A Date object representing the date of data.
NetworkStatsGetOptions
NetworkStatsGetOptions
is a dictionary object used to filter a network statistics request made when calling getSamples()
. It contains the following fields:
appManifestURL
- A string used to filter network stats by app.
serviceType
- A string used to filter network stats by system service.
browsingTrafficOnly
- A boolean set to filter network stats by browsing traffic. If true, return only browsing traffic, which is generated from the mozbrowser iframe element within an app. If false or not set, the total traffic, which is generated from both the mozapp and mozbrowser iframe elements, is returned.
For example, this object might be { appManifestURL : manifestURL }
.