/**
* Prepare the request headers
*
* @return array
*/
protected function _prepareHeaders()
{
$headers = array();
// Set the host header
if (!isset($this->headers['host'])) {
$host = $this->uri->getHost();
// If the port is not default, add it
if (!($this->uri->getScheme() == 'http' && $this->uri->getPort() == 80 || $this->uri->getScheme() == 'https' && $this->uri->getPort() == 443)) {
$host .= ':' . $this->uri->getPort();
}
$headers[] = "Host: {$host}";
}
// Set the connection header
if (!isset($this->headers['connection'])) {
if (!$this->config['keepalive']) {
$headers[] = "Connection: close";
}
}
// Set the Accept-encoding header if not set - depending on whether
// zlib is available or not.
if (!isset($this->headers['accept-encoding'])) {
if (function_exists('gzinflate')) {
$headers[] = 'Accept-encoding: gzip, deflate';
} else {
$headers[] = 'Accept-encoding: identity';
}
}
// Set the content-type header
if (($this->method == self::POST || $this->method == self::PUT) && (!isset($this->headers[strtolower(self::CONTENT_TYPE)]) && isset($this->enctype))) {
$headers[] = "Content-type: {$this->enctype}";
}
// Set the user agent header
if (!isset($this->headers['user-agent']) && isset($this->config['useragent'])) {
$headers[] = "User-agent: {$this->config['useragent']}";
}
// Set HTTP authentication if needed
if (is_array($this->auth)) {
$auth = self::encodeAuthHeader($this->auth['user'], $this->auth['password'], $this->auth['type']);
$headers[] = "Authorization: {$auth}";
}
// Load cookies from cookie jar
if (isset($this->cookiejar)) {
$cookstr = $this->cookiejar->getMatchingCookies($this->uri, true, ECookieJar::COOKIE_STRING_CONCAT);
if ($cookstr) {
$headers[] = "Cookie: {$cookstr}";
}
}
// Add all other user defined headers
foreach ($this->headers as $header) {
list($name, $value) = $header;
if (is_array($value)) {
$value = implode(', ', $value);
}
$headers[] = "{$name}: {$value}";
}
return $headers;
}
/**
* Send request to the remote server
*
* @param string $method
* @param EUriHttp $uri
* @param float $http_ver
* @param array $headers
* @param string $body
* @return string $request
* @throws EHttpClientAdapterException If connection fails, connected to wrong host, no PUT file defined, unsupported method, or unsupported cURL option
*/
public function write($method, $uri, $httpVersion = 1.1, $headers = array(), $body = '')
{
// Make sure we're properly connected
if (!$this->_curl) {
throw new EHttpClientException(Yii::t('EHttpClient', "Trying to write but we are not connected"));
}
if ($this->_connected_to[0] != $uri->getHost() || $this->_connected_to[1] != $uri->getPort()) {
throw new EHttpClientException(Yii::t('EHttpClient', "Trying to write but we are connected to the wrong host"));
}
// set URL
curl_setopt($this->_curl, CURLOPT_URL, $uri->__toString());
// ensure correct curl call
$curlValue = true;
switch ($method) {
case EHttpClient::GET:
$curlMethod = CURLOPT_HTTPGET;
break;
case EHttpClient::POST:
$curlMethod = CURLOPT_POST;
break;
case EHttpClient::PUT:
// There are two different types of PUT request, either a Raw Data string has been set
// or CURLOPT_INFILE and CURLOPT_INFILESIZE are used.
if (is_resource($body)) {
$this->_config['curloptions'][CURLOPT_INFILE] = $body;
}
if (isset($this->_config['curloptions'][CURLOPT_INFILE])) {
// Now we will probably already have Content-Length set, so that we have to delete it
// from $headers at this point:
foreach ($headers as $k => $header) {
if (preg_match('/Content-Length:\\s*(\\d+)/i', $header, $m)) {
if (is_resource($body)) {
$this->_config['curloptions'][CURLOPT_INFILESIZE] = (int) $m[1];
}
unset($headers[$k]);
}
}
if (!isset($this->_config['curloptions'][CURLOPT_INFILESIZE])) {
throw new EHttpClientException(Yii::t('EHttpClient', "Cannot set a file-handle for cURL option CURLOPT_INFILE without also setting its size in CURLOPT_INFILESIZE."));
}
if (is_resource($body)) {
$body = '';
}
$curlMethod = CURLOPT_PUT;
} else {
$curlMethod = CURLOPT_CUSTOMREQUEST;
$curlValue = "PUT";
}
break;
case EHttpClient::DELETE:
$curlMethod = CURLOPT_CUSTOMREQUEST;
$curlValue = "DELETE";
break;
case EHttpClient::OPTIONS:
$curlMethod = CURLOPT_CUSTOMREQUEST;
$curlValue = "OPTIONS";
break;
case EHttpClient::TRACE:
$curlMethod = CURLOPT_CUSTOMREQUEST;
$curlValue = "TRACE";
break;
default:
// For now, through an exception for unsupported request methods
throw new EHttpClientException(Yii::t('EHttpClient', "Method currently not supported"));
}
if (is_resource($body) && $curlMethod != CURLOPT_PUT) {
throw new EHttpClientException(Yii::t('EHttpClient', "Streaming requests are allowed only with PUT"));
}
// get http version to use
$curlHttp = $httpVersion == 1.1 ? CURL_HTTP_VERSION_1_1 : CURL_HTTP_VERSION_1_0;
// mark as HTTP request and set HTTP method
curl_setopt($this->_curl, $curlHttp, true);
curl_setopt($this->_curl, $curlMethod, $curlValue);
if ($this->out_stream) {
// headers will be read into the response
curl_setopt($this->_curl, CURLOPT_HEADER, false);
curl_setopt($this->_curl, CURLOPT_HEADERFUNCTION, array($this, "readHeader"));
// and data will be written into the file
curl_setopt($this->_curl, CURLOPT_FILE, $this->out_stream);
} else {
// ensure headers are also returned
curl_setopt($this->_curl, CURLOPT_HEADER, true);
// ensure actual response is returned
curl_setopt($this->_curl, CURLOPT_RETURNTRANSFER, true);
}
// set additional headers
$headers['Accept'] = '';
curl_setopt($this->_curl, CURLOPT_HTTPHEADER, $headers);
/**
* Make sure POSTFIELDS is set after $curlMethod is set:
* @link http://de2.php.net/manual/en/function.curl-setopt.php#81161
*/
if ($method == EHttpClient::POST) {
curl_setopt($this->_curl, CURLOPT_POSTFIELDS, $body);
} elseif ($curlMethod == CURLOPT_PUT) {
// this covers a PUT by file-handle:
// Make the setting of this options explicit (rather than setting it through the loop following a bit lower)
// to group common functionality together.
curl_setopt($this->_curl, CURLOPT_INFILE, $this->_config['curloptions'][CURLOPT_INFILE]);
curl_setopt($this->_curl, CURLOPT_INFILESIZE, $this->_config['curloptions'][CURLOPT_INFILESIZE]);
unset($this->_config['curloptions'][CURLOPT_INFILE]);
unset($this->_config['curloptions'][CURLOPT_INFILESIZE]);
} elseif ($method == EHttpClient::PUT) {
// This is a PUT by a setRawData string, not by file-handle
curl_setopt($this->_curl, CURLOPT_POSTFIELDS, $body);
}
// set additional curl options
if (isset($this->_config['curloptions'])) {
foreach ((array) $this->_config['curloptions'] as $k => $v) {
if (!in_array($k, $this->_invalidOverwritableCurlOptions)) {
if (curl_setopt($this->_curl, $k, $v) == false) {
throw new EHttpClientException(Yii::t('EHttpClient', sprintf("Unknown or erroreous cURL option '%s' set", $k)));
}
}
}
}
// send the request
$response = curl_exec($this->_curl);
// if we used streaming, headers are already there
if (!is_resource($this->out_stream)) {
$this->_response = $response;
}
$request = curl_getinfo($this->_curl, CURLINFO_HEADER_OUT);
$request .= $body;
if (empty($this->_response)) {
throw new EHttpClientException(Yii::t('EHttpClient', "Error in cURL request: " . curl_error($this->_curl)));
}
// cURL automatically decodes chunked-messages, this means we have to disallow the Zend_Http_Response to do it again
if (stripos($this->_response, "Transfer-Encoding: chunked\r\n")) {
$this->_response = str_ireplace("Transfer-Encoding: chunked\r\n", '', $this->_response);
}
// Eliminate multiple HTTP responses.
do {
$parts = preg_split('|(?:\\r?\\n){2}|m', $this->_response, 2);
$again = false;
if (isset($parts[1]) && preg_match("|^HTTP/1\\.[01](.*?)\r\n|mi", $parts[1])) {
$this->_response = $parts[1];
$again = true;
}
} while ($again);
// cURL automatically handles Proxy rewrites, remove the "HTTP/1.0 200 Connection established" string:
if (stripos($this->_response, "HTTP/1.0 200 Connection established\r\n\r\n") !== false) {
$this->_response = str_ireplace("HTTP/1.0 200 Connection established\r\n\r\n", '', $this->_response);
}
return $request;
}
/**
* Send request to the remote server
*
* @param string $method
* @param EUriHttp $uri
* @param string $http_ver
* @param array $headers
* @param string $body
* @return string Request as string
*/
public function write($method, $uri, $http_ver = '1.1', $headers = array(), $body = '')
{
// Make sure we're properly connected
if (!$this->socket) {
throw new EHttpClientException(Yii::t('EHttpClient', 'Trying to write but we are not connected'));
}
$host = $uri->getHost();
$host = (strtolower($uri->getScheme()) == 'https' ? $this->config['ssltransport'] : 'tcp') . '://' . $host;
if ($this->connected_to[0] != $host || $this->connected_to[1] != $uri->getPort()) {
throw new EHttpClientException(Yii::t('EHttpClient', 'Trying to write but we are connected to the wrong host'));
}
// Save request method for later
$this->method = $method;
// Build request headers
$path = $uri->getPath();
if ($uri->getQuery()) {
$path .= '?' . $uri->getQuery();
}
$request = "{$method} {$path} HTTP/{$http_ver}\r\n";
foreach ($headers as $k => $v) {
if (is_string($k)) {
$v = ucfirst($k) . ": {$v}";
}
$request .= "{$v}\r\n";
}
// Add the request body
$request .= "\r\n" . $body;
// Send the request
if (!@fwrite($this->socket, $request)) {
throw new EHttpClientException(Yii::t('EHttpClient', 'Error writing request to server'));
}
return $request;
}