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writeAllAsync

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Write all of the requested data

public function writeAllAsync(
  string $bytes,
  ?int $timeout_ns = NULL,
): Awaitable<void>;

A wrapper aroudn writeAsync() that will:

  • do multiple writes if necessary to write the entire provided buffer
  • fail with EPIPE if it is not possible to write all the requested data

It is possible for this to never return, e.g. if called on a pipe or or socket which the other end keeps open forever. Set a timeout if you do not want this to happen.

Parameters​

  • string $bytes
  • ?int $timeout_ns = NULL

Returns​