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| 1 | <?php |
| 2 | namespace Ably; |
| 3 | |
| 4 | use Ably\AblyRest; |
| 5 | use Ably\Log; |
| 6 | use Ably\Exceptions\AblyException; |
| 7 | use Ably\Exceptions\AblyRequestException; |
| 8 | use Ably\Utils\CurlWrapper; |
| 9 | |
| 10 | /** |
| 11 | * Makes HTTP requests using cURL |
| 12 | */ |
| 13 | class Http { |
| 14 | |
| 15 | /** |
| 16 | * @var string $postDataFormat How $params is interpreted when sent as a string. |
| 17 | * Default: 'json'. 'msgpack' support may be added in future |
| 18 | */ |
| 19 | protected $postDataFormat; |
| 20 | |
| 21 | /** |
| 22 | * @var integer $timeout Timeout for a cURL connection in ms. |
| 23 | */ |
| 24 | protected $connectTimeout; |
| 25 | |
| 26 | /** |
| 27 | * @var integer $timeout Timeout for a cURL request in ms. |
| 28 | */ |
| 29 | protected $requestTimeout; |
| 30 | |
| 31 | /** |
| 32 | * @var \Ably\Utils\CurlWrapper $curl Holds a CurlWrapper instance used for building requests. |
| 33 | */ |
| 34 | protected $curl; |
| 35 | |
| 36 | /** |
| 37 | * Constructor |
| 38 | */ |
| 39 | public function __construct( $clientOptions ) { |
| 40 | $this->postDataFormat = $clientOptions->useBinaryProtocol ? 'msgpack' : 'json'; |
| 41 | $this->connectTimeout = $clientOptions->httpOpenTimeout; |
| 42 | $this->requestTimeout = $clientOptions->httpRequestTimeout; |
| 43 | $this->curl = new CurlWrapper(); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Wrapper to do a GET request |
| 48 | * @see Http::request() |
| 49 | */ |
| 50 | public function get( $url, $headers = [], $params = [] ) { |
| 51 | return $this->request( 'GET', $url, $headers, $params ); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Wrapper to do a POST request |
| 56 | * @see Http::request() |
| 57 | */ |
| 58 | public function post( $url, $headers = [], $params = [] ) { |
| 59 | return $this->request( 'POST', $url, $headers, $params ); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Wrapper to do a PUT request |
| 64 | * @see Http::request() |
| 65 | */ |
| 66 | public function put( $url, $headers = [], $params = [] ) { |
| 67 | return $this->request( 'PUT', $url, $headers, $params ); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Wrapper to do a DELETE request |
| 72 | * @see Http::request() |
| 73 | */ |
| 74 | public function delete( $url, $headers = [], $params = [] ) { |
| 75 | return $this->request( 'DELETE', $url, $headers, $params ); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Executes a cURL request |
| 80 | * @param string $method HTTP method (GET, POST, PUT, DELETE, ...) |
| 81 | * @param string $url Absolute URL to make a request on |
| 82 | * @param array $headers HTTP headers to send |
| 83 | * @param array|string $params Array of parameters to submit or a JSON string |
| 84 | * @throws AblyRequestException if the request fails |
| 85 | * @throws AblyRequestTimeoutException if the request times out |
| 86 | * @return array with 'headers' and 'body' fields, body is automatically decoded |
| 87 | */ |
| 88 | public function request( $method, $url, $headers = [], $params = [] ) { |
| 89 | |
| 90 | $ch = $this->curl->init($url); |
| 91 | |
| 92 | $this->curl->setOpt($ch, CURLOPT_CONNECTTIMEOUT_MS, $this->connectTimeout); |
| 93 | $this->curl->setOpt($ch, CURLOPT_TIMEOUT_MS, $this->requestTimeout); |
| 94 | |
| 95 | if (!empty($params)) { |
| 96 | if (is_array( $params )) { |
| 97 | $paramsQuery = http_build_query( $params ); |
| 98 | |
| 99 | if ($method == 'GET') { |
| 100 | if ($paramsQuery) { |
| 101 | $url .= '?' . $paramsQuery; |
| 102 | } |
| 103 | $this->curl->setOpt( $ch, CURLOPT_URL, $url ); |
| 104 | } else if ($method == 'POST') { |
| 105 | $this->curl->setOpt( $ch, CURLOPT_POST, true ); |
| 106 | $this->curl->setOpt( $ch, CURLOPT_POSTFIELDS, $paramsQuery ); |
| 107 | } else { |
| 108 | $this->curl->setOpt( $ch, CURLOPT_CUSTOMREQUEST, $method ); |
| 109 | $this->curl->setOpt( $ch, CURLOPT_POSTFIELDS, $paramsQuery ); |
| 110 | } |
| 111 | } else if (is_string( $params )) { // json or msgpack |
| 112 | if ($method == 'GET') { |
| 113 | } else if ($method == 'POST') { |
| 114 | $this->curl->setOpt( $ch, CURLOPT_POST, true ); |
| 115 | } else { |
| 116 | $this->curl->setOpt( $ch, CURLOPT_CUSTOMREQUEST, $method ); |
| 117 | } |
| 118 | |
| 119 | $this->curl->setOpt( $ch, CURLOPT_POSTFIELDS, $params ); |
| 120 | |
| 121 | if ($this->postDataFormat == 'json') { |
| 122 | array_push( $headers, 'Content-Type: application/json' ); |
| 123 | } |
| 124 | } else { |
| 125 | throw new AblyRequestException( 'Unknown $params format' ); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | if (!empty($headers)) { |
| 130 | $this->curl->setOpt( $ch, CURLOPT_HTTPHEADER, $headers ); |
| 131 | } |
| 132 | |
| 133 | $this->curl->setOpt( $ch, CURLOPT_RETURNTRANSFER, true ); |
| 134 | if ( Log::getLogLevel() >= Log::VERBOSE ) { |
| 135 | $this->curl->setOpt( $ch, CURLOPT_VERBOSE, true ); |
| 136 | } |
| 137 | $this->curl->setOpt( $ch, CURLOPT_HEADER, true ); // return response headers |
| 138 | |
| 139 | Log::d( 'cURL command:', $this->curl->getCommand( $ch ) ); |
| 140 | |
| 141 | $raw = $this->curl->exec( $ch ); |
| 142 | $info = $this->curl->getInfo( $ch ); |
| 143 | $err = $this->curl->getErrNo( $ch ); |
| 144 | $errmsg = $err ? $this->curl->getError( $ch ) : ''; |
| 145 | |
| 146 | $this->curl->close( $ch ); |
| 147 | |
| 148 | if ( $err ) { // a connection error has occured (no data received) |
| 149 | Log::e( 'cURL error:', $err, $errmsg ); |
| 150 | throw new AblyRequestException( 'cURL error: ' . $errmsg, 50003, 500 ); |
| 151 | } |
| 152 | |
| 153 | $resHeaders = substr( $raw, 0, $info['header_size'] ); |
| 154 | $body = substr( $raw, $info['header_size'] ); |
| 155 | $decodedBody = json_decode( $body ); |
| 156 | |
| 157 | $response = [ 'headers' => $resHeaders, 'body' => $decodedBody ? $decodedBody : $body ]; |
| 158 | |
| 159 | Log::v( 'cURL request response:', $info['http_code'], $response ); |
| 160 | |
| 161 | if ( $info['http_code'] < 200 || $info['http_code'] >= 300 ) { |
| 162 | $ablyCode = empty( $decodedBody->error->code ) ? $info['http_code'] * 100 : $decodedBody->error->code * 1; |
| 163 | $errorMessage = empty( $decodedBody->error->message ) ? 'cURL request failed' : $decodedBody->error->message; |
| 164 | |
| 165 | throw new AblyRequestException( $errorMessage, $ablyCode, $info['http_code'], $response ); |
| 166 | } |
| 167 | |
| 168 | return $response; |
| 169 | } |
| 170 | } |