/**
* Writes data from {@link writeBuffer} to stream.
*/
protected function write()
{
if (($written = @fwrite($this->getStream(), $this->writeBuffer->read($this->writeBuffer->getLength()))) === false) {
throw new ClientException("Could not write data to socket.");
}
if ($written === 0) {
throw new ClientException("Broken pipe or closed connection.");
}
fflush($this->getStream());
// flush internal PHP buffers
$this->writeBuffer->discard($written);
$this->lastWrite = microtime(true);
}