/**
* 执行外部请求，并返回接口
*
* $request->execute();
*
* @param Request $request
* @param Response $response
* @return Response
* @throws Exception
*/
public function executeRequest(Request $request, Response $response)
{
$previous = Request::$current;
Request::$current = $request;
// 如果post数据了
if ($post = $request->post()) {
$request->body = http_build_query($post, null, '&');
$request->headers('content-type', 'application/x-www-form-urlencoded; charset=' . $request->charset);
}
// 如果需要暴露框架信息
if (Base::$expose) {
$request->headers('user-agent', Base::version());
}
try {
// 处理header
$sendHeaders = [];
if ($headers = $request->headers()) {
foreach ($headers as $key => $value) {
if (is_array($value)) {
$value = implode(', ', $value);
}
$sendHeaders[$key] = $value;
}
}
// 处理cookie
if ($cookies = $request->cookie()) {
$sendHeaders['Cookie'] = http_build_query($cookies, null, '; ');
}
$url = $request->uri;
if ($query = $request->query()) {
$url .= '?' . http_build_query($query, null, '&');
}
// 执行请求
$result = Requests::request($url, $sendHeaders, $request->body, $request->method, $this->options);
if (!$result->success) {
throw new RequestException('Error fetching remote :url [ status :code ]', [':url' => $url, ':code' => $result->status_code]);
}
foreach ($result->headers as $k => $v) {
$response->headers($k, $v);
}
$response->status = $result->status_code;
$response->body = $result->body;
} catch (Exception $e) {
Request::$current = $previous;
throw $e;
}
Request::$current = $previous;
return $response;
}
/**
* 跳转状态码的处理
*
* @param Request $request
* @param Response $response
* @param RequestClient $client
* @return null|Request
*/
public static function onHeaderLocation(Request $request, Response $response, RequestClient $client)
{
if ($client->follow && in_array($response->status, [Http::CREATED, Http::MOVED_PERMANENTLY, Http::FOUND, Http::SEE_OTHER, Http::TEMPORARY_REDIRECT])) {
switch ($response->status) {
default:
case Http::MOVED_PERMANENTLY:
case Http::TEMPORARY_REDIRECT:
$followMethod = $request->method;
break;
case Http::CREATED:
case Http::SEE_OTHER:
$followMethod = Http::GET;
break;
case Http::FOUND:
if ($client->strictRedirect) {
$followMethod = $request->method;
} else {
$followMethod = Http::GET;
}
break;
}
$origHeaders = $request->headers();
$followHeaders = array_intersect_assoc($origHeaders, array_fill_keys($client->followHeaders, true));
$followRequest = Request::factory($response->headers('Location'));
$followRequest->method = $followMethod;
$followRequest->headers($followHeaders);
if ($followMethod !== Http::GET) {
$followRequest->body = $request->body;
}
return $followRequest;
}
return null;
}