Weekly Update - May 22nd, 2015

Giovanny Gioyik (@Gioyik) & Yosuke Furukawa (@yosuke-furukawa)

io.js 1.8, 2.0 and 2.1 releases

This week we had three io.js releases v1.8.2, v2.0.2 and v2.1.0, complete changelog can be found on GitHub.

Maintenance release

crypto: significantly reduced memory usage for TLS (Fedor Indutny & Сковорода Никита Андреевич) #1529
npm: Upgrade npm to 2.9.0. See the v2.8.4 and v2.9.0 release notes for details.

win,node-gyp: the delay-load hook for windows addons has now been correctly enabled by default, it had wrongly defaulted to off in the release version of 2.0.0 (Bert Belder) #1433
os: tmpdir()'s trailing slash stripping has been refined to fix an issue when the temp directory is at '/'. Also considers which slash is used by the operating system. (cjihrig) #1673
tls: default ciphers have been updated to use gcm and aes128 (Mike MacCana) #1660
build: v8 snapshots have been re-enabled by default as suggested by the v8 team, since prior security issues have been resolved. This should give some perf improvements to both startup and vm context creation. (Trevor Norris) #1663
src: fixed preload modules not working when other flags were used before --require (Yosuke Furukawa) #1694
dgram: fixed send()'s callback not being asynchronous (Yosuke Furukawa) #1313
readline: emitKeys now keeps buffering data until it has enough to parse. This fixes an issue with parsing split escapes. (Alex Kocharin) #1601
cluster: works now properly emit 'disconnect' to cluster.worker (Oleg Elifantiev) #1386
events: uncaught errors now provide some context (Evan Lucas) #1654

crypto: Diffie-Hellman key exchange (DHE) parameters ('dhparams') must now be 1024 bits or longer or an error will be thrown. A warning will also be printed to the console if you supply less than 2048 bits. See https://weakdh.org/ for further context on this security concern (Shigeki Ohtsu) #1739.
node: A new --trace-sync-io command line flag will print a warning and a stack trace whenever a synchronous API is used. This can be used to track down synchronous calls that may be slowing down an application (Trevor Norris) #1707.
node: To allow for chaining of methods, the setTimeout(), setKeepAlive(), setNoDelay(), ref() and unref() methods used in 'net', 'dgram', 'http', 'https' and 'tls' now return the current instance instead of undefined (Roman Reiss & Evan Lucas) #1699 #1768 #1779.
npm: Upgraded to v2.10.1, release notes can be found in https://github.com/npm/npm/releases/tag/v2.10.1 and https://github.com/npm/npm/releases/tag/v2.10.0.
util: A significant speed-up (in the order of 35%) for the common-case of a single string argument to util.format(), used by console.log() (Сковорода Никита Андреевич) #1749.

Some problems with unreferenced timers running during beforeExit are still to be resolved. See #1264.
Surrogate pair in REPL can freeze terminal #690
process.send() is not synchronous as the docs suggest, a regression introduced in 1.0.2, see #760 and fix in #774
Calling dns.setServers() while a DNS query is in progress can cause the process to crash on a failed assertion #894
url.resolve may transfer the auth portion of the url when resolving between two full hosts, see #1435.

Mikeal Rogers post about Promise errors in io.js on Modulus.io
NodeSchool International Day has been held for the first time. 40 cities joined.
Logjam attack vulnerability detected on Diffie-Hellman Key exchange. io.js fixed the vulnerability on v2.1.0.

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