#include <servicebrowser.h>

Inherits TQObject.

Public Types
enum	Flags { AutoDelete =1 , AutoResolve = 2 }

enum	State { Working , Stopped , Unsupported }

Public Slots
void	removeDomain (const TQString &domain)

void	addDomain (const TQString &domain)

Signals
void	serviceAdded (DNSSD::RemoteService::Ptr)

void	serviceRemoved (DNSSD::RemoteService::Ptr)

void	finished ()

Public Member Functions
	ServiceBrowser (const TQStringList &types, DomainBrowser *domains, int flags)

	ServiceBrowser (const TQString &type, DomainBrowser *domains=0, bool autoResolve=false)

	ServiceBrowser (const TQString &type, const TQString &domain, int flags)

	ServiceBrowser (const TQString &type, const TQString &domain, bool autoResolve=false)

const TQValueList< RemoteService::Ptr > &	services () const

virtual void	startBrowse ()

const DomainBrowser *	browsedDomains () const

Static Public Member Functions
static const State	isAvailable ()

Static Public Attributes
static const TQString	AllServices = "_services._dns-sd._udp"

Protected Member Functions
virtual void	virtual_hook (int, void *)

Detailed Description

Most important class for applications that want to discover specific services on network.

Suppose that you need list of web servers running. Example:

DNSSD::ServiceBrowser* browser = new DNSSD::ServiceBrowser("_http._tcp");
connect(browser,TQ_SIGNAL(serviceAdded(RemoteService::Ptr)),this,TQ_SLOT(addService(RemoteService::Ptr)));
connect(browser,TQ_SIGNAL(serviceRemoved(RemoteService::Ptr)),this,TQ_SLOT(delService(RemoteService::Ptr)));
browser->startBrowse();

In above example addService will be called for every web server already running or just appearing on network and delService will be called when server is stopped. Because no DomainBrowser was passed to constructor, domains configured by user will be searched.

Author: Jakub Stachowski

Browsing for specific type of services or all available service types

Definition at line 54 of file servicebrowser.h.

Member Enumeration Documentation

◆ Flags

enum DNSSD::ServiceBrowser::Flags

AutoDelete - DomainBrowser object passes in constructor should be deleted when ServiceBrowser is deleted
AutoResolve - after disovering new service it will be resolved and then reported with serviceAdded() signal. It raises network usage by resolving all services, so use it only when necessary.

Definition at line 64 of file servicebrowser.h.

◆ State

enum DNSSD::ServiceBrowser::State

Availability of DNS-SD services.

Working - available
Stopped - not available because mdnsd daemon is not running.
Unsupported - not available because KDE was compiled without DNS-SD support

Definition at line 75 of file servicebrowser.h.

Constructor & Destructor Documentation

◆ ServiceBrowser() [1/4]

DNSSD::ServiceBrowser::ServiceBrowser	(	const TQStringList &	types,
		DomainBrowser *	domains,
		int	flags
	)

ServiceBrowser constructor.

Parameters

types	List of service types to browse for (example: "_http._tcp"). Can also be DNSSD::ServicesBrowser::AllServices to specify "metaquery" for all service types present on network
domains	DomainBrowser object used to specify domains to browse. You do not have to connect its domainAdded() signal - it will be done automatically. You can left this parameter as NULL for default domains.
flags	One or more values from Flags

Since: 3.5

Todo:: KDE4: set default values for domains and flags

Definition at line 59 of file servicebrowser.cpp.

◆ ServiceBrowser() [2/4]

DNSSD::ServiceBrowser::ServiceBrowser	(	const TQString &	type,
		DomainBrowser *	domains = `0`,
		bool	autoResolve = `false`
	)

The same as above, but allows only one service type.

Parameters

type	Type of services to browse for
domains	DomainBrowser object used to specify domains to browse. You do not have to connect its domainAdded() signal - it will be done automatically. You can left this parameter as NULL for default domains.
autoResolve	auto resolve, if set

Deprecated:: use previous constructor instead

Definition at line 54 of file servicebrowser.cpp.

◆ ServiceBrowser() [3/4]

DNSSD::ServiceBrowser::ServiceBrowser	(	const TQString &	type,
		const TQString &	domain,
		int	flags
	)

Overloaded constructor used to create browser for one domain.

Parameters

type	Type of services to browse for
domain	Domain name. You can add more domains later using addDomain and remove them with removeDomain
flags	One or more values from Flags. AutoDelete flag has no effect

Since: 3.5

Definition at line 80 of file servicebrowser.cpp.

◆ ServiceBrowser() [4/4]

DNSSD::ServiceBrowser::ServiceBrowser	(	const TQString &	type,
		const TQString &	domain,
		bool	autoResolve = `false`
	)

Deprecated:: user previous constructor instead

Definition at line 76 of file servicebrowser.cpp.

Member Function Documentation

◆ addDomain

void DNSSD::ServiceBrowser::addDomain ( const TQString & domain )

slot

Add new domain to browse.

Definition at line 175 of file servicebrowser.cpp.

◆ browsedDomains()

const DomainBrowser * DNSSD::ServiceBrowser::browsedDomains ( ) const

Return DomainBrowser containing domains being browsed.

Valid object will returned even if 'domains' parameters in constructor was set to NULL or single domain constructor was used.

Definition at line 104 of file servicebrowser.cpp.

◆ finished

void DNSSD::ServiceBrowser::finished ( )

signal

Emitted when all services has been reported.

This signal can be used by application that just want to get list of currently available services (similar to directory listing) and do not care about dynamic adding/removing services later. This signal can be emitted many time: for example if new host has been connected to network and is announcing some services interesting to this ServiceBrowser, they will be reported by several serviceAdded() signals and whole batch will be concluded by finished().

◆ isAvailable()

const ServiceBrowser::State DNSSD::ServiceBrowser::isAvailable ( )

static

Checks availability of DNS-SD services (this also covers publishing).

If you use this function to report an error to the user, below is a suggestion on how to word the errors:

switch(DNSSD::ServiceBrowser::isAvailable()) {
  case DNSSD::ServiceBrowser::Working:
    return "";
      case DNSSD::ServiceBrowser::Stopped:
        return i18n("<p>The Zeroconf daemon is not running. See the Service Discovery Handbook"
                    " for more information.<br/>"
                "Other users will not see this system when browsing"
                " the network via zeroconf, but normal access will still work.</p>");
      case DNSSD::ServiceBrowser::Unsupported:
        return i18n("<p>Zeroconf support is not available in this version of TDE."
                    " See the Service Discovery Handbook for more information.<br/>"
                    "Other users will not see this system when browsing"
                    " the network via zeroconf, but normal access will still work.</p>");
      default:
        return i18n("<p>Unknown error with Zeroconf.<br/>"
                    "Other users will not see this system when browsing"
                    " the network via zeroconf, but normal access will still work.</p>");
    }

Definition at line 85 of file servicebrowser.cpp.

◆ removeDomain

void DNSSD::ServiceBrowser::removeDomain ( const TQString & domain )

slot

Remove one domain from list of domains to browse.

Definition at line 163 of file servicebrowser.cpp.

◆ serviceAdded

void DNSSD::ServiceBrowser::serviceAdded ( DNSSD::RemoteService::Ptr )

signal

Emitted when new service is discovered (or resolved if autoresolve is set.

◆ serviceRemoved

void DNSSD::ServiceBrowser::serviceRemoved ( DNSSD::RemoteService::Ptr )

signal

Emitted when service is no longer announced.

RemoteService object is deleted from services list and destroyed immediately after this signal returns.

◆ services()

const TQValueList< RemoteService::Ptr > & DNSSD::ServiceBrowser::services ( ) const

Returns list of services.

Definition at line 207 of file servicebrowser.cpp.

◆ startBrowse()

void DNSSD::ServiceBrowser::startBrowse ( )

virtual

Starts browsing for services.

To stop it just destroy the object.

Definition at line 127 of file servicebrowser.cpp.

Member Data Documentation

◆ AllServices

const TQString DNSSD::ServiceBrowser::AllServices = "_services._dns-sd._udp"

static

Special service type to search for all available service types.

Pass it as "type" parameter to ServiceBrowser constructor.

Definition at line 142 of file servicebrowser.h.

The documentation for this class was generated from the following files:

dnssd

Public Types

Public Slots

Signals

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ Flags

◆ State

Constructor & Destructor Documentation

◆ ServiceBrowser() [1/4]

◆ ServiceBrowser() [2/4]

◆ ServiceBrowser() [3/4]

◆ ServiceBrowser() [4/4]

Member Function Documentation

◆ addDomain

◆ browsedDomains()

◆ finished

◆ isAvailable()

◆ removeDomain

◆ serviceAdded

◆ serviceRemoved

◆ services()

◆ startBrowse()

Member Data Documentation

◆ AllServices

dnssd

dnssd