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net/docs/bug-triage-labels.md

+# Chrome Network Bug Triage : Labels
+
+## Some network label caveats
+
+**Cr-UI-Browser-Downloads**
+: Despite the name, this covers all issues related to downloading a file except
+  saving entire pages (which is **Cr-Blink-SavePage**), not just UI issues.
+  Most downloads bugs will have the word "download" or "save as" in the
+  description.  Issues with the HTTP server for the Chrome binaries are not
+  downloads bugs.
+
+**Cr-UI-Browser-SafeBrowsing**
+: Bugs that have to do with the process by which a URL or file is determined to
+  be dangerous based on our databases, or the resulting interstitials.
+  Determination of danger based purely on content-type or file extension
+  belongs in **Cr-UI-Browser-Downloads**, not SafeBrowsing.
+
+**Cr-Internals-Network-SSL**
+: This includes issues that should be also tagged as **Cr-Security-UX**
+  (certificate error pages or other security interstitials, omnibox indicators
+  that a page is secure), and more general SSL issues.  If you see requests
+  that die in the SSL negotiation phase, in particular, this is often the
+  correct label.
+
+**Cr-Internals-Network-DataProxy**
+: Flywheel / the Data Reduction Proxy.  Issues require "Reduce Data Usage" be
+  turned on.  Proxy url is [https://proxy.googlezip.net:443](), with
+  [http://compress.googlezip.net:80]() as a fallback.  Currently Android and
+  iOS only.
+
+**Cr-Internals-Network-Cache**
+: The cache is the layer that handles most range request logic (Though range
+  requests may also be issued by the PDF plugin, XHRs, or other components).
+
+**Cr-Internals-Network-SPDY**
+: Covers HTTP2 as well.
+
+**Cr-Internals-Network-HTTP**
+: Typically not used.  Unclear what it covers, and there's no specific HTTP
+  owner.
+
+**Cr-Internals-Network-Logging**
+: Covers **about:net-internals**, **about:net-export** as well as the what's
+  sent to the NetLog.
+
+**Cr-Internals-Network-Connectivity**
+: Issues related to switching between networks, ERR_NETWORK_CHANGED, Chrome
+  thinking it's online when it's not / navigator.onLine inaccuracies, etc.
+
+**Cr-Internals-Network-Filters**
+: Covers SDCH and gzip issues.  ERR_CONTENT_DECODING_FAILED indicates a problem
+  at this layer, and bugs here can also cause response body corruption.
+
+## Common non-network labels
+
+Bugs in these areas often receive the **Cr-Internals-Network** label, though
+they fall largely outside the purview of the network stack team:
+
+**Cr-Blink-Forms**
+: Issues submitting forms, forms having weird data, forms sending the wrong
+  method, etc.
+
+**Cr-Blink-Loader**
+: Cross origin issues are sometimes loader related.  Blink also has an
+  in-memory cache, and when it's used, requests don't appear in
+  about:net-internals.  Requests for the same URL are also often merged there
+  as well.  This does *not* cover issues with content/browser/loader/ files.
+
+**Cr-Blink-ServiceWorker**
+
+**Cr-Blink-Storage-AppCache**
+
+**Cr-Blink-WebSockets**
+
+**Cr-Blink-XHR**
+: Generic issues with sync/async XHR requests - missing request or response
+  headers, multiple headers, etc.  These will often run into issues in certain
+  corner cases (Cross origin / CORS, proxy, whatever).  Attach all labels that
+  seem appropriate.
+
+**Cr-Services-Sync**
+: Sharing data/tabs/history/passwords/etc between machines not working.
+
+**Cr-Services-Chromoting**
+
+**Cr-Platform-Extensions**
+: Issues extensions loading / not loading / hanging.
+
+**Cr-Platform-Extensions-API**
+: Issues with network related extension APIs should have this label.
+  chrome.webRequest is the big one, I believe, but there are others.
+
+**Cr-Internals-Plugins-Pepper[-SDK]**
+
+**Cr-UI-Browser-Omnibox**
+: Basically any issue with the omnibox.  URLs being treated as search queries
+  rather than navigations, dropdown results being weird, not handling certain
+  unicode characters, etc.  If the issue is new TLDs not being recognized by
+  the omnibox, that's due to Chrome's TLD list being out of date, and not an
+  omnibox issue.  Such TLD issues should be duped against
+  http://crbug.com/37436.
+
+**Cr-Internals-Media-Network**
+: Issues related to media.  These often run into the 6 requests per hostname
+  issue, and also have fun interactions with the cache, particularly in the
+  range request case.
+
+**Cr-Internals-Plugins-PDF**
+: Issues loading pdf files.  These are often related to range requests, which
+  also have some logic at the Internals-Network-Cache layer.
+
+**Cr-UI-Browser-Navigation**
+
+**Cr-UI-Browser-History**
+: Issues which only appear with forward/back navigation.
+
+**Cr-OS-Systems-Network** / **Cr-OS-Systems-Mobile** / **Cr-OS-Systems-Bluetooth**
+: These should be used for issues with ChromeOS's platform network code, and
+  not net/ issues on ChromeOS.
+
+**Cr-Blink-SecurityFeature**
+: CORS / Cross origin issues.  Main frame cross-origin navigation issues are
+  often actually **Cr-UI-Browser-Navigation** issues.
+
+**Cr-Privacy**
+: Privacy related bug (History, cookies discoverable by an entity that
+  shouldn't be able to do so, incognito state being saved in memory or on disk
+  beyond the lifetime of incognito tabs, etc).  Generally used in conjunction
+  with other labels.
+
+**Type-Bug-Security**
+: Security related bug (Allows for code execution from remote site, allows
+  crossing security boundaries, unchecked array bounds,
+  etc).