Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
__agwa's profile
Andrew Ayer
Andrew Ayer
Andrew Ayer
@__agwa

Tweets

Andrew Ayer

@__agwa

Bootstrapped founder of @SSLMate, where I make SSL certificates easier and do #webpki and #CertificateTransparency stuff.

Cambridge, MA + SF Bay Area
agwa.name
Joined November 2011

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Cloudflare | #BuiltForThis‏Verified account @Cloudflare 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation

      Incident report on memory leak caused by Cloudflare parser bug -http://buff.ly/2lB3gCe 

      20 replies 1,001 retweets 560 likes
    2. Andrew Ayer‏ @__agwa 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @Cloudflare

      Incorrect statement from @Cloudflare. Creating and comparing invalid pointer in C is undefined behavior. Post-hoc >= check doesn't cut it.pic.twitter.com/FdiVhvbSBF

      6 replies 29 retweets 79 likes
    3. Ingvar Stepanyan‏ @RReverser 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @__agwa @Cloudflare

      Both pointers were valid and pointer to data in Nginx buffer (which is why bug happened in the first place).

      1 reply 0 retweets 5 likes
    4. Andrew Ayer‏ @__agwa 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @RReverser @Cloudflare

      Blog says repeatedly "past the end of the buffer." Is that not accurate?

      1 reply 0 retweets 0 likes
    5. Ingvar Stepanyan‏ @RReverser 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @__agwa @Cloudflare

      As it shows, Nginx indicates end of the buffer with ->last, which indicates end of data buffer.

      1 reply 0 retweets 0 likes
    6. Ingvar Stepanyan‏ @RReverser 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @RReverser @__agwa @Cloudflare

      But Nginx uses a memory pool, which means that actual memory block behind the buffer can be bigger.

      2 replies 0 retweets 1 like
    7. Ingvar Stepanyan‏ @RReverser 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @RReverser @__agwa @Cloudflare

      Also, as far as I remember, that undefined behavior applies only to array elements, not to "raw" pointers.

      1 reply 0 retweets 0 likes
    8. Andrew Ayer‏ @__agwa 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @RReverser @Cloudflare

      Dunno what you mean by "raw" pointer. 6.5.6 of C standard only defines pointer arithmetic for pointers into arrays.

      2 replies 0 retweets 2 likes
      Andrew Ayer‏ @__agwa 23 Feb 2017
      • Report Tweet
      • Report NetzDG Violation
      Replying to @__agwa @RReverser @Cloudflare

      Even if nginx uses a memory pool, how can you guarantee p never goes past what C considers to be the array object?

      5:18 PM - 23 Feb 2017
      • 3 Likes
      • John-Mark Gurney 🗑️🔥 Peter Burka shillbert
      1 reply 0 retweets 3 likes
        1. New conversation
        2. Andrew Ayer‏ @__agwa 23 Feb 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @__agwa @RReverser @Cloudflare

          Fact that nginx crashed sometimes suggests that you can't.

          1 reply 0 retweets 3 likes
        3. Dave Smith‏ @djsmith42 25 Feb 2017
          • Report Tweet
          • Report NetzDG Violation
          Replying to @__agwa

          Correct. C has no built in concept of array size or the "end" of an array. @RReverser @Cloudflare

          0 replies 0 retweets 0 likes
        4. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info