WP_SimplePie_File::__construct() WordPress Method

	public function __construct( $url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false ) {
		$this->url       = $url;
		$this->timeout   = $timeout;
		$this->redirects = $redirects;
		$this->headers   = $headers;
		$this->useragent = $useragent;

		$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;

		if ( preg_match( '/^http(s)?:\/\//i', $url ) ) {
			$args = array(
				'timeout'     => $this->timeout,
				'redirection' => $this->redirects,
			);

			if ( ! empty( $this->headers ) ) {
				$args['headers'] = $this->headers;
			}

			if ( SIMPLEPIE_USERAGENT != $this->useragent ) { // Use default WP user agent unless custom has been specified.
				$args['user-agent'] = $this->useragent;
			}

			$res = wp_safe_remote_request( $url, $args );

			if ( is_wp_error( $res ) ) {
				$this->error   = 'WP HTTP Error: ' . $res->get_error_message();
				$this->success = false;

			} else {
				$this->headers = wp_remote_retrieve_headers( $res );

				/*
				 * SimplePie expects multiple headers to be stored as a comma-separated string,
				 * but `wp_remote_retrieve_headers()` returns them as an array, so they need
				 * to be converted.
				 *
				 * The only exception to that is the `content-type` header, which should ignore
				 * any previous values and only use the last one.
				 *
				 * @see SimplePie_HTTP_Parser::new_line().
				 */
				foreach ( $this->headers as $name => $value ) {
					if ( ! is_array( $value ) ) {
						continue;
					}

					if ( 'content-type' === $name ) {
						$this->headers[ $name ] = array_pop( $value );
					} else {
						$this->headers[ $name ] = implode( ', ', $value );
					}
				}

				$this->body        = wp_remote_retrieve_body( $res );
				$this->status_code = wp_remote_retrieve_response_code( $res );
			}
		} else {
			$this->error   = '';
			$this->success = false;
		}
	}