Call all `before` callbacks to notify that a new asynchronous execution context

is being entered. If nested calls to `emitBefore()` are made, the stack of

`asyncId`s will be tracked and properly unwound.

Call all `after` callbacks. If nested calls to `emitBefore()` were made, then

make sure the stack is unwound properly. Otherwise an error will be thrown.

Call all `destroy` hooks. This should only ever be called once. An error will

be thrown if it is called more than once. This **must** be manually called. If

the resource is left to be collected by the GC then the `destroy` hooks will

* `path` {string|Buffer|URL}

* `mode` {integer} **Default:** `fs.constants.F_OK`

Synchronously tests a user's permissions for the file or directory specified by

`path`. The `mode` argument is an optional integer that specifies the

* `code` {number} The HTTP/2 error code to send in the final `GOAWAY` frame.

If unspecified, and `error` is not undefined, the default is `INTERNAL_ERROR`,

otherwise defaults to `NO_ERROR`.

Immediately terminates the `Http2Session` and the associated `net.Socket` or

`tls.TLSSocket`.

* `msecs` {number}

* `callback` {Function}

Used to set a callback function that is called when there is no activity on

the `Http2Session` after `msecs` milliseconds. The given `callback` is

* `settings` {HTTP2 Settings Object}

Updates the current local settings for this `Http2Session` and sends a new

`SETTINGS` frame to the connected HTTP/2 peer.

`http2.constants.NGHTTP2_NO_ERROR` (`0x00`)

* `callback` {Function} An optional function registered to listen for the

`'close'` event.

Closes the `Http2Stream` instance by sending an `RST_STREAM` frame to the

connected HTTP/2 peer.

and `256` (inclusive).

* `silent` {boolean} When `true`, changes the priority locally without

sending a `PRIORITY` frame to the connected peer.

Updates the priority for this `Http2Stream` instance.

* `msecs` {number}

* `callback` {Function}

const http2 = require('http2');

* `headers` {HTTP2 Headers Object}

Sends an additional informational `HEADERS` frame to the connected HTTP/2 peer.

* `pushStream` {ServerHttp2Stream} The returned pushStream object.

* `headers` {HTTP2 Headers Object} Headers object the pushStream was

initiated with.

Initiates a push stream. The callback is invoked with the new `Http2Stream`

instance created for the push stream passed as the second argument, or an

include payload data.

* `getTrailers` {Function} Callback function invoked to collect trailer

headers.

const http2 = require('http2');