/**
* Prepares the headers.
*
* @param \Ivory\HttpAdapter\Message\InternalRequestInterface $internalRequest The internal request.
* @param boolean $associative TRUE if the prepared headers should be associative else FALSE.
* @param boolean $contentType TRUE if the content type header should be prepared else FALSE.
* @param boolean $contentLength TRUE if the content length header should be prepared else FALSE.
*
* @return array The prepared headers.
*/
protected function prepareHeaders(InternalRequestInterface $internalRequest, $associative = true, $contentType = true, $contentLength = false)
{
if (!$internalRequest->hasHeader('Connection')) {
$internalRequest->setHeader('Connection', $this->configuration->getKeepAlive() ? 'keep-alive' : 'close');
}
if (!$internalRequest->hasHeader('Content-Type')) {
if ($this->configuration->hasEncodingType()) {
$internalRequest->setHeader('Content-Type', $this->configuration->getEncodingType());
} elseif ($contentType && $internalRequest->hasFiles()) {
$internalRequest->setHeader('Content-Type', ConfigurationInterface::ENCODING_TYPE_FORMDATA . '; boundary=' . $this->configuration->getBoundary());
} elseif ($contentType && $internalRequest->hasDatas()) {
$internalRequest->setHeader('Content-Type', ConfigurationInterface::ENCODING_TYPE_URLENCODED);
}
}
if ($contentLength && !$internalRequest->hasHeader('Content-Length') && ($length = strlen($this->prepareBody($internalRequest))) > 0) {
$internalRequest->setHeader('Content-Length', $length);
}
if (!$internalRequest->hasHeader('User-Agent')) {
$internalRequest->setHeader('User-Agent', $this->configuration->getUserAgent());
}
return HeadersNormalizer::normalize($internalRequest->getHeaders(), $associative);
}