CCloudStorageService_GoogleStorage::StartUpload

protected function StartUpload($arBucket, $filePath, $ContentType)
{
	$filePath = '/'.trim($filePath, '/');
	if($arBucket["PREFIX"])
	{
		if(mb_substr($filePath, 0, mb_strlen($arBucket["PREFIX"]) + 2) != "/".$arBucket["PREFIX"]."/")
			$filePath = "/".$arBucket["PREFIX"].$filePath;
	}
	$filePathU = CCloudUtil::URLEncode($filePath, "UTF-8", true);

	$response = $this->SendRequest(
		$arBucket["SETTINGS"]["ACCESS_KEY"],
		$arBucket["SETTINGS"]["SECRET_KEY"],
		'POST',
		$arBucket["BUCKET"],
		$filePathU,
		'',
		'',
		array(
			"x-goog-acl"=>"public-read",
			"x-goog-resumable"=>"start",
			"Content-Type"=>$ContentType,
		)
	);

	if(
		$this->status == 201
		&& is_array($this->headers)
		&& isset($this->headers["Location"])
		&& preg_match("/upload_id=(.*)$/", $this->headers["Location"], $match)
	)
	{
		return array(
			"filePath" => $filePath,
			"filePos" => 0,
			"upload_id" => $match[1],
		);
	}

	if (defined("BX_CLOUDS_ERROR_DEBUG"))
	{
		AddMessage2Log($this);
	}

	return false;
}