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Socket

hphp/hack/manual/hsl/Functions/HH.Lib.OS/socket.md

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:::info[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. :::

Hack
namespace HH\Lib\OS;

function socket(
  SocketDomain $domain,
  SocketType $type,
  int $protocol,
): FileDescriptor;

Parameters

  • SocketDomain $domain
  • SocketType $type
  • int $protocol

Returns

  • FileDescriptor
<!-- HHAPIDOC -->