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PhutilChannelChannel.php
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Sat, Nov 23, 13:34

PhutilChannelChannel.php
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<?php
/**
* Channel that wraps some other channel. This class is not interesting on its
* own and just serves as a no-op proxy, but extending it allows you to compose
* channels to mutate their characteristics (for instance, to add protocol
* semantics with @{class:PhutilProtocolChannel}).
*
* The implementation of this class is entirely uninteresting.
*
* @group channel
*/
abstract class PhutilChannelChannel extends PhutilChannel {
private $channel;
public function __construct(PhutilChannel $channel) {
$this->channel = $channel;
}
public function read() {
return $this->channel->read();
}
public function write($message) {
$this->channel->write($message);
return $this;
}
public function update() {
return $this->channel->update();
}
public function isOpen() {
return $this->channel->isOpen();
}
protected function readBytes() {
$this->throwOnRawByteOperations();
}
protected function writeBytes($bytes) {
$this->throwOnRawByteOperations();
}
protected function getReadSockets() {
return $this->channel->getReadSockets();
}
protected function getWriteSockets() {
return $this->channel->getWriteSockets();
}
protected function isReadBufferEmpty() {
return $this->channel->isReadBufferEmpty();
}
protected function isWriteBufferEmpty() {
return $this->channel->isWriteBufferEmpty();
}
public function flush() {
$this->channel->flush();
return $this;
}
protected function getUnderlyingChannel() {
return $this->channel;
}
private function throwOnRawByteOperations() {
// NOTE: You should only be able to end up here if you subclass this class
// and implement your subclass incorrectly, since the byte methods are
// protected.
throw new Exception(
"Do not call readBytes() or writeBytes() directly on a ".
"PhutilChannelChannel. Instead, call read() or write().");
}
}

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