Warning: This method has been deprecated. Use WP_Http::request() instead.

Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness. Use WP_Http::request() instead.

WP_Http::_dispatch_request( string $url, array $args ): array|WP_Error

Dispatches a HTTP request to a supporting transport.


Tests each transport in order to find a transport which matches the request arguments.
Also caches the transport instance to be used later.

The order for requests is cURL, and then PHP Streams.

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See also

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$url string Required
URL to request.
$args array Required
Request arguments.

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array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
A WP_Error instance upon error.

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File: wp-includes/class-wp-http.php. View all references

private function _dispatch_request( $url, $args ) {
	static $transports = array();

	$class = $this->_get_first_available_transport( $args, $url );
	if ( ! $class ) {
		return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) );

	// Transport claims to support request, instantiate it and give it a whirl.
	if ( empty( $transports[ $class ] ) ) {
		$transports[ $class ] = new $class();

	$response = $transports[ $class ]->request( $url, $args );

	/** This action is documented in wp-includes/class-wp-http.php */
	do_action( 'http_api_debug', $response, 'response', $class, $args, $url );

	if ( is_wp_error( $response ) ) {
		return $response;

	/** This filter is documented in wp-includes/class-wp-http.php */
	return apply_filters( 'http_response', $response, $args, $url );

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Version Description
5.1.0 Use WP_Http::request()
3.2.0 Introduced.

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