EventDnsBase

Event base.

If initialize is true, it attempts to use the underlying operating system defaults to configure the DNS base sensibly. If it is false, the DNS base is left unconfigured, with no nameservers or options set. In the latter case the DNS base should be configured manually, e.g. with EventDnsBase::parseResolvConf. If initialize is an integer, it must be one of the following flags: Flag Description EventDnsBase::DISABLE_WHEN_INACTIVE Do not prevent the libevent event loop from exiting when we have no active DNS requests. EventDnsBase::INITIALIZE_NAMESERVERS Process the resolv.conf. EventDnsBase::NAMESERVERS_NO_DEFAULT Do not add default nameserver if there are no nameservers in the resolv.conf.

The nameserver string, either as an IPv4 address, an IPv6 address, an IPv4 address with a port ( IPv4:Port ), or an IPv6 address with a port ( [IPv6]:Port ).

Returns true on success or false on failure.

Search domain.

Returns the number of configured nameservers(not necessarily the number of running nameservers). This is useful for double-checking whether our calls to the various nameserver configuration functions have been successful.

Path to the hosts' file.

Returns true on success or false on failure.

Determines what information is parsed from the resolv.conf file. See the man page for resolv.conf for the format of this file. The following directives are not parsed from the file: sortlist, rotate, no-check-names, inet6, debug. If this function encounters an error, the possible return values are: 1 = failed to open file 2 = failed to stat file 3 = file too large 4 = out of memory 5 = short read from file 6 = no nameservers listed in the file

Path to resolv.conf file.

Returns true on success or false on failure.

The currently available configuration options are: "ndots", "timeout", "max-timeouts", "max-inflight", and "attempts".

Option value.

Returns true on success or false on failure.

The number of dots.

Returns true on success or false on failure.