The EventDnsBase class

Introduction

(PECL event >= 1.2.6-beta)

Represents Libevent's DNS base structure. Used to resolve DNS asyncronously, parse configuration files like resolv.conf etc.

Class synopsis

public addNameserverIp (  string $ip  ) : bool

public addSearch (  string $domain  ) : void

public clearSearch ( ) : void

public __construct (  EventBase $base  ,  bool $initialize  )

public countNameservers ( ) : int

public loadHosts (  string $hosts  ) : bool

public parseResolvConf (  int $flags  ,  string $filename  ) : bool

public setOption (  string $option  ,  string $value  ) : bool

public setSearchNdots (  int $ndots  ) : bool

Predefined Constants

EventDnsBase::OPTION_SEARCH

Tells to read the domain and search fields from the resolv.conf file and the ndots option, and use them to decide which domains(if any) to search for hostnames that aren’t fully-qualified.

EventDnsBase::OPTION_NAMESERVERS

Tells to learn the nameservers from the resolv.conf file.

EventDnsBase::OPTION_MISC

EventDnsBase::OPTION_HOSTSFILE

Tells to read a list of hosts from /etc/hosts as part of loading the resolv.conf file.

EventDnsBase::OPTIONS_ALL

Tells to learn as much as it can from the resolv.conf file.

Table of Contents

• EventDnsBase::addNameserverIp — Adds a nameserver to the DNS base
• EventDnsBase::addSearch — Adds a domain to the list of search domains
• EventDnsBase::clearSearch — Removes all current search suffixes
• EventDnsBase::__construct — Constructs EventDnsBase object
• EventDnsBase::countNameservers — Gets the number of configured nameservers
• EventDnsBase::loadHosts — Loads a hosts file (in the same format as /etc/hosts) from hosts file
• EventDnsBase::parseResolvConf — Scans the resolv.conf-formatted file
• EventDnsBase::setOption — Set the value of a configuration option
• EventDnsBase::setSearchNdots — Set the 'ndots' parameter for searches