55 lines
1.4 KiB
PHP
55 lines
1.4 KiB
PHP
<?php
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namespace NoccyLabs\React\Http2\Frame;
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class SettingsFrame extends Frame
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{
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const SETTINGS_HEADER_TABLE_SIZE = 0x1;
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const SETTINGS_ENABLE_PUSH = 0x2;
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const SETTINGS_MAX_CONCURRENT_STREAMS = 0x3;
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const SETTINGS_INITIAL_WINDOW_SIZE = 0x4;
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const SETTINGS_MAX_FRAME_SIZE = 0x5;
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const SETTINGS_MAX_HEADER_LIST_SIZE = 0x6;
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protected int $frameType = self::FRAME_SETTINGS;
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protected array $settings = [];
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/**
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* Set a setting to a specific value. This method intentionally does not do any bounds
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* checking on the setting id to allow for extensions.
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*
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* @param int $setting
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* @param int $value
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* @return self
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*/
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public function set(int $setting, int $value): self
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{
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$this->settings[$setting] = $value;
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return $this;
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}
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public function get(int $setting): ?int
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{
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return $this->settings[$setting]??null;
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}
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public function toBinary(): string
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{
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$packed = '';
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foreach ($this->settings as $setting=>$value) {
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$packed .= pack('vV', $setting, $value);
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}
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return $packed;
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}
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public function fromBinary(string $data): void
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{
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for ($n = 0; $n < strlen($data) - 3; $n = $n + 3) {
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$unpacked = unpack('vsetting/Vvalue', substr($data,$n,3));
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$this->set($unpacked['setting'], $unpacked['value']);
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}
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}
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}
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