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doc: improve doc Http2Stream: FrameError, Timeout and Trailers
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Document arguments for the 'frameError', 'timeout' and 'trailers'
event.

PR-URL: #30373
Fixes: nodejs/help#877
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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dev-script authored and targos committed Dec 10, 2019
1 parent 5ae3a85 commit 0022d75
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9 changes: 9 additions & 0 deletions doc/api/http2.md
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Expand Up @@ -970,6 +970,11 @@ an `Http2Stream`.
added: v8.4.0
-->

* `type` {integer} The frame type.
* `code` {integer} The error code.
* `id` {integer} The stream id (or `0` if the frame isn't associated with a
stream).

The `'frameError'` event is emitted when an error occurs while attempting to
send a frame. When invoked, the handler function will receive an integer
argument identifying the frame type, and an integer argument identifying the
Expand All @@ -984,12 +989,16 @@ added: v8.4.0
The `'timeout'` event is emitted after no activity is received for this
`Http2Stream` within the number of milliseconds set using
`http2stream.setTimeout()`.
Its listener does not expect any arguments.

#### Event: 'trailers'
<!-- YAML
added: v8.4.0
-->

* `headers` {HTTP/2 Headers Object} An object describing the headers
* `flags` {number} The associated numeric flags

The `'trailers'` event is emitted when a block of headers associated with
trailing header fields is received. The listener callback is passed the
[HTTP/2 Headers Object][] and flags associated with the headers.
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