Welcome What's new in Chrome extensions Getting started API Reference Samples
Welcome What's new in Chrome extensions Getting started API Reference Samples

chrome.mdns

This API is part of the deprecated Chrome Apps platform. Learn more about migrating your app.
  • Description

    Use the chrome.mdns API to discover services over mDNS. This comprises a subset of the features of the NSD spec: http://www.w3.org/TR/discovery-api/

  • Permissions
    mdns
  • Availability
    Since Chrome 43.

Summary

Types

MDnsService

Properties

  • ipAddress
    string

    The IP address of an mDNS advertised service.

  • serviceData
    string[]

    Metadata for an mDNS advertised service.

  • serviceHostPort
    string

    The host:port pair of an mDNS advertised service.

  • serviceName
    string

    The service name of an mDNS advertised service, <instance_name>.<service_type>.

Properties

MAX_SERVICE_INSTANCES_PER_EVENT

Since Chrome 44.

The maximum number of service instances that will be included in onServiceList events. If more instances are available, they may be truncated from the onServiceList event.

Value

number 2048

Methods

forceDiscovery

mdns.forceDiscovery(callback: function)

Since Chrome 45.

Immediately issues a multicast DNS query for all service types. callback is invoked immediately. At a later time, queries will be sent, and any service events will be fired.

Parameters

  • callback
    function

    Callback invoked after ForceDiscovery() has started.

    The callback parameter should be a function that looks like this:

    () => {...}

Events

onServiceList

mdns.onServiceList.addListener(listener: function)

Event fired to inform clients of the current complete set of known available services. Clients should only need to store the list from the most recent event. The service type that the extension is interested in discovering should be specified as the event filter with the 'serviceType' key. Not specifying an event filter will not start any discovery listeners.

Event

  • listener
    function

    The listener parameter should be a function that looks like this:

    (services: MDnsService[]) => {...}
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