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<?php

namespace React\Dns\Model;

/**
 * This class represents a single resulting record in a response message
 *
 * It uses a structure similar to `\React\Dns\Query\Query`, but does include
 * fields for resulting TTL and resulting record data (IPs etc.).
 *
 * @link https://tools.ietf.org/html/rfc1035#section-4.1.3
 * @see \React\Dns\Query\Query
 */
final class Record
{
    /**
     * @var string hostname without trailing dot, for example "reactphp.org"
     */
    public $name;

/**
     * @var int see Message::TYPE_* constants (UINT16)
     */
    public $type;

/**
     * Defines the network class, usually `Message::CLASS_IN`.
     *
     * For `OPT` records (EDNS0), this defines the maximum message size instead.
     *
     * @var int see Message::CLASS_IN constant (UINT16)
     * @see Message::CLASS_IN
     */
    public $class;

/**
     * Defines the maximum time-to-live (TTL) in seconds
     *
     * For `OPT` records (EDNS0), this defines additional flags instead.
     *
     * @var int maximum TTL in seconds (UINT32, most significant bit always unset)
     * @link https://tools.ietf.org/html/rfc2181#section-8
     * @link https://tools.ietf.org/html/rfc6891#section-6.1.3 for `OPT` records (EDNS0)
     */
    public $ttl;

/**
     * The payload data for this record
     *
     * The payload data format depends on the record type. As a rule of thumb,
     * this library will try to express this in a way that can be consumed
     * easily without having to worry about DNS internals and its binary transport:
     *
     * - A:
     *   IPv4 address string, for example "192.168.1.1".
     *
     * - AAAA:
     *   IPv6 address string, for example "::1".
     *
     * - CNAME / PTR / NS:
     *   The hostname without trailing dot, for example "reactphp.org".
     *
     * - TXT:
     *   List of string values, for example `["v=spf1 include:example.com"]`.
     *   This is commonly a list with only a single string value, but this
     *   technically allows multiple strings (0-255 bytes each) in a single
     *   record. This is rarely used and depending on application you may want
     *   to join these together or handle them separately. Each string can
     *   transport any binary data, its character encoding is not defined (often
     *   ASCII/UTF-8 in practice). [RFC 1464](https://tools.ietf.org/html/rfc1464)
     *   suggests using key-value pairs such as `["name=test","version=1"]`, but
     *   interpretation of this is not enforced and left up to consumers of this
     *   library (used for DNS-SD/Zeroconf and others).
     *
     * - MX:
     *   Mail server priority (UINT16) and target hostname without trailing dot,
     *   for example `{"priority":10,"target":"mx.example.com"}`.
     *   The payload data uses an associative array with fixed keys "priority"
     *   (also commonly referred to as weight or preference) and "target" (also
     *   referred to as exchange). If a response message contains multiple
     *   records of this type, targets should be sorted by priority (lowest
     *   first) - this is left up to consumers of this library (used for SMTP).
     *
     * - SRV:
     *   Service priority (UINT16), service weight (UINT16), service port (UINT16)
     *   and target hostname without trailing dot, for example
     *   `{"priority":10,"weight":50,"port":8080,"target":"example.com"}`.
     *   The payload data uses an associative array with fixed keys "priority",
     *   "weight", "port" and "target" (also referred to as name).
     *   The target may be an empty host name string if the service is decidedly
     *   not available. If a response message contains multiple records of this
     *   type, targets should be sorted by priority (lowest first) and selected
     *   randomly according to their weight - this is left up to consumers of
     *   this library, see also [RFC 2782](https://tools.ietf.org/html/rfc2782)
     *   for more details.
     *
     * - SSHFP:
     *   Includes algorithm (UNIT8), fingerprint type (UNIT8) and fingerprint
     *   value as lower case hex string, for example:
     *   `{"algorithm":1,"type":1,"fingerprint":"0123456789abcdef..."}`
     *   See also https://www.iana.org/assignments/dns-sshfp-rr-parameters/dns-sshfp-rr-parameters.xhtml
     *   for algorithm and fingerprint type assignments.
     *
     * - SOA:
     *   Includes master hostname without trailing dot, responsible person email
     *   as hostname without trailing dot and serial, refresh, retry, expire and
     *   minimum times in seconds (UINT32 each), for example:
     *   `{"mname":"ns.example.com","rname":"hostmaster.example.com","serial":
     *   2018082601,"refresh":3600,"retry":1800,"expire":60000,"minimum":3600}`.
     *
     * - CAA:
     *   Includes flag (UNIT8), tag string and value string, for example:
     *   `{"flag":128,"tag":"issue","value":"letsencrypt.org"}`
     *
     * - OPT:
     *   Special pseudo-type for EDNS0. Includes an array of additional opt codes
     *   with a value according to the respective OPT code. See `Message::OPT_*`
     *   for list of supported OPT codes. Any other OPT code not currently
     *   supported will be an opaque binary string containing the raw data
     *   as transported in the DNS record. For forwards compatibility, you should
     *   not rely on this format for unknown types. Future versions may add
     *   support for new types and this may then parse the payload data
     *   appropriately - this will not be considered a BC break. See also
     *   [RFC 6891](https://tools.ietf.org/html/rfc6891) for more details.
     *
     * - Any other unknown type:
     *   An opaque binary string containing the RDATA as transported in the DNS
     *   record. For forwards compatibility, you should not rely on this format
     *   for unknown types. Future versions may add support for new types and
     *   this may then parse the payload data appropriately - this will not be
     *   considered a BC break. See the format definition of known types above
     *   for more details.
     *
     * @var string|string[]|array
     */
    public $data;

/**
     * @param string                $name
     * @param int                   $type
     * @param int                   $class
     * @param int                   $ttl
     * @param string|string[]|array $data
     */
    public function __construct($name, $type, $class, $ttl, $data)
    {
        $this->name     = $name;
        $this->type     = $type;
        $this->class    = $class;
        $this->ttl      = $ttl;
        $this->data     = $data;
    }
}

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🐘Message.php	php	5.7 KB	2024-06-13 14:18	✏️ Edit 👁️ View
🐘Record.php	php	6.5 KB	2024-06-13 14:18	✏️ Edit 👁️ View