Documentation

$resolver->resolve('reactphp.org')->then(function ($ip) {
    echo 'IP for reactphp.org is ' . $ip . PHP_EOL;
});

This is one of the main methods in this package. It sends a DNS query for the given $domain name to your DNS server and returns a single IP address on success.

If the DNS server sends a DNS response message that contains more than one IP address for this query, it will randomly pick one of the IP addresses from the response. If you want the full list of IP addresses or want to send a different type of query, you should use the resolveAll() method instead.

If the DNS server sends a DNS response message that indicates an error code, this method will reject with a RecordNotFoundException. Its message and code can be used to check for the response code.

If the DNS communication fails and the server does not respond with a valid response message, this message will reject with an Exception.

Pending DNS queries can be cancelled by cancelling its pending promise like so:

$promise = $resolver->resolve('reactphp.org');

$promise->cancel();

$resolver->resolveAll('reactphp.org', Message::TYPE_A)->then(function ($ips) {
    echo 'IPv4 addresses for reactphp.org ' . implode(', ', $ips) . PHP_EOL;
});

$resolver->resolveAll('reactphp.org', Message::TYPE_AAAA)->then(function ($ips) {
    echo 'IPv6 addresses for reactphp.org ' . implode(', ', $ips) . PHP_EOL;
});

This is one of the main methods in this package. It sends a DNS query for the given $domain name to your DNS server and returns a list with all record values on success.

If the DNS server sends a DNS response message that contains one or more records for this query, it will return a list with all record values from the response. You can use the Message::TYPE_* constants to control which type of query will be sent. Note that this method always returns a list of record values, but each record value type depends on the query type. For example, it returns the IPv4 addresses for type A queries, the IPv6 addresses for type AAAA queries, the hostname for type NS, CNAME and PTR queries and structured data for other queries. See also the Record documentation for more details.

If the DNS server sends a DNS response message that indicates an error code, this method will reject with a RecordNotFoundException. Its message and code can be used to check for the response code.

If the DNS communication fails and the server does not respond with a valid response message, this message will reject with an Exception.

Pending DNS queries can be cancelled by cancelling its pending promise like so:

$promise = $resolver->resolveAll('reactphp.org', Message::TYPE_AAAA);

$promise->cancel();