---
date: '2012-08-28T22:33:45.659Z'
category: release
title: Version 0.9.1 (Unstable)
layout: blog-post
author: The Node.js Project
---

2012.08.28, Version 0.9.1 (Unstable)

- buffer: Add Buffer.isEncoding(enc) to test for valid encoding values (isaacs)

- Raise UV_ECANCELED on premature close. (Ben Noordhuis)

- Remove c-ares from libuv, move to a top-level node dependency (Bert Belder)

- ref/unref for all HandleWraps, timers, servers, and sockets (Timothy J Fontaine)

- addon: remove node-waf, superseded by node-gyp (Ben Noordhuis)

- child_process: emit error on exec failure (Ben Noordhuis)

- cluster: do not use internal server API (Andreas Madsen)

- constants: add O_DIRECT (Ian Babrou)

- crypto: add sync interface to crypto.pbkdf2() (Ben Noordhuis)

- darwin: emulate fdatasync() (Fedor Indutny)

- dgram: make .bind() always asynchronous (Ben Noordhuis)

- events: Make emitter.listeners() side-effect free (isaacs, Joe Andaverde)

- fs: Throw early on invalid encoding args (isaacs)

- fs: fix naming of truncate/ftruncate functions (isaacs)

- http: bubble up parser errors to ClientRequest (Brian White)

- linux: improve cpuinfo parser on ARM and MIPS (Ben Noordhuis)

- net: add support for IPv6 addresses ending in :: (Josh Erickson)

- net: support Server.listen(Pipe) (Andreas Madsen)

- node: don't scan add-on for "init" symbol (Ben Noordhuis)

- remove process.uvCounters() (Ben Noordhuis)

- repl: console writes to repl rather than process stdio (Nathan Rajlich)

- timers: implement setImmediate (Timothy J Fontaine)

- tls: fix segfault in pummel/test-tls-ci-reneg-attack (Ben Noordhuis)

- tools: Move gyp addon tools to node-gyp (Nathan Rajlich)

- unix: preliminary signal handler support (Ben Noordhuis)

- unix: remove dependency on ev_child (Ben Noordhuis)

- unix: work around darwin bug, don't poll() on pipe (Fedor Indutny)

- util: Formally deprecate util.pump() (Ben Noordhuis)

- windows: make active and closing handle state independent (Bert Belder)

- windows: report spawn errors to the exit callback (Bert Belder)

- windows: signal handling support with uv_signal_t (Bert Belder)

Source Code: https://nodejs.org/dist/v0.9.1/node-v0.9.1.tar.gz

Macintosh Installer (Universal): https://nodejs.org/dist/v0.9.1/node-v0.9.1.pkg

Windows Installer: https://nodejs.org/dist/v0.9.1/node-v0.9.1-x86.msi

Windows x64 Installer: https://nodejs.org/dist/v0.9.1/x64/node-v0.9.1-x64.msi

Windows x64 Files: https://nodejs.org/dist/v0.9.1/x64/

Linux 32-bit Binary: https://nodejs.org/dist/v0.9.1/node-v0.9.1-linux-x86.tar.gz

Linux 64-bit Binary: https://nodejs.org/dist/v0.9.1/node-v0.9.1-linux-x64.tar.gz

Solaris 32-bit Binary: https://nodejs.org/dist/v0.9.1/node-v0.9.1-sunos-x86.tar.gz

Solaris 64-bit Binary: https://nodejs.org/dist/v0.9.1/node-v0.9.1-sunos-x64.tar.gz

Other release files: https://nodejs.org/dist/v0.9.1/

Website: https://nodejs.org/docs/v0.9.1/

Documentation: https://nodejs.org/docs/v0.9.1/api/

Shasums:

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```
