Dear API owners,

Kindly ping on this 
since 
https://groups.google.com/a/chromium.org/g/blink-dev/c/sL15TKGmXqM/m/rD0SF8sQBwAJ
 
has been approved.

best,
Yifan

On Friday, October 20, 2023 at 6:16:58 PM UTC+2 Yifan Luo wrote:

> Contact emailscl...@chromium.org, mk...@chromium.org, va...@chromium.org, 
> l...@chromium.org
>
> Explainer
> https://github.com/WICG/private-network-access/blob/master/explainer.md
>
> Specificationhttps://wicg.github.io/private-network-access
>
> Design docs
>
> https://docs.google.com/document/d/1x1a1fQLOrcWogK3tpFBgQZQ5ZjcONTvD0IqqXkgrg5I/edit#heading=h.7nki9mck5t64
>
> Summary
>
> Requires that private network requests for subresources from public 
> websites may only be initiated from a secure context. Examples include 
> internet to intranet requests and internet to loopback requests. This is a 
> first step towards fully implementing Private Network Access: 
> https://wicg.github.io/private-network-access/
>
>
> Blink componentBlink>SecurityFeature>CORS>PrivateNetworkAccess 
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ESecurityFeature%3ECORS%3EPrivateNetworkAccess>
>
> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/572
>
> TAG review statusIssues addressed
>
> Chromium Trial NamePrivateNetworkAccessNonSecureContextsAllowed
>
> Link to origin trial feedback summary
> https://docs.google.com/spreadsheets/d/1z5ZdCslNCnSVR7TNlUTHjSvunMFmT_9G9NOx8-O78-I/edit?usp=sharing&resourcekey=0-DITlG8tDuFDWHiBUHnlSoQ
>
> Origin Trial documentation link
> https://developer.chrome.com/blog/private-network-access-update/
>
> WebFeature UseCounter name
> kPrivateNetworkAccessNonSecureContextsAllowedDeprecationTrial
>
> Risks
>
>
> Interoperability and Compatibility
>
> No interoperability risks. Compatibility risk is small but non-negligible. 
> UseCounters show ~0.1% of page visits making use of this feature. Direct 
> outreach to the largest users per UKM data revealed no objections to this 
> launch. Rolling this deprecation out to beta per the previous I2S resulted 
> in more feedback about the compatibility risk and the need for a time 
> extension. See the following doc for an extensive discussion: 
> https://docs.google.com/document/d/1bpis0QwaA9ZrRFmpPW6LiaPmdwT0UhhUMNsEnU0zfLk/edit
>
>
> *Gecko*: Positive (
> https://github.com/mozilla/standards-positions/issues/143) Tentatively 
> positive, but no formal position yet.
>
> *WebKit*: Positive (
> https://lists.webkit.org/pipermail/webkit-dev/2021-May/031837.html)
>
> *Web developers*: Mixed signals (
> https://docs.google.com/document/d/1bpis0QwaA9ZrRFmpPW6LiaPmdwT0UhhUMNsEnU0zfLk/edit)
>  
> In our recent survey, most of websites are able to migrate if our new 
> permission prompt can be landed as a way for them to relax mixed content 
> checks. 
> https://docs.google.com/spreadsheets/d/1z5ZdCslNCnSVR7TNlUTHjSvunMFmT_9G9NOx8-O78-I/edit?resourcekey=0-DITlG8tDuFDWHiBUHnlSoQ#gid=309953809
>  ------------ 
> Some websites, broadly falling in the category of controller webapps for 
> IoT devices, find this change incompatible with their use cases. While many 
> use cases can be solved with specific workarounds, some still require 
> further engagement.
>
> *Other signals*:
>
> Activation
>
> Developers of non-secure sites that rely upon local servers will need to 
> upgrade to HTTPS. This might cause some complications, as mixed-content 
> checks will begin to apply. Chrome carves out HTTP access to loopback (as 
> perhttps://w3c.github.io/webappsec-secure-contexts/#localhost), which is 
> a release valve for folks who don't want to go through the effort of 
> securely-distributing certs for local servers. The initial launch in M92 
> was delayed due to compatibility risks surfaced during the rollout to beta. 
> See this doc for a lot more details: 
> https://docs.google.com/document/d/1bpis0QwaA9ZrRFmpPW6LiaPmdwT0UhhUMNsEnU0zfLk/edit
>
>
> Security
>
> This change should be security-positive.
>
>
> WebView application risks
>
> Does this intent deprecate or change behavior of existing APIs, such that 
> it has potentially high risk for Android WebView-based applications?
>
>
>
> Goals for experimentation
>
>
>
> Reason this experiment is being extended
>
> We intend to extend the deprecation trial until new permission prompt 
> shipped, which is going to be on a origin trial from M120 to M123: 
> https://groups.google.com/a/chromium.org/g/blink-dev/c/sL15TKGmXqM/m/rD0SF8sQBwAJ
>
>
> Ongoing technical constraints
>
> None.
>
>
> Debuggability
>
> When a request is made that violates this restriction and the feature is 
> not enabled, three things happen: 1. A warning message is logged to the 
> DevTools console. 2. A depreciation report is filed against the initiator 
> website's Reporting API, if so configured. 3. An issue surfaced in the 
> DevTools Issues panel. Likewise, when the feature is enabled and a request 
> is blocked, the same happens except that the message logged to the DevTools 
> console is an error and its text is slightly different. The devtools 
> network panel shows information about the source and remote address spaces 
> at play.
>
>
> Will this feature be supported on all six Blink platforms (Windows, Mac, 
> Linux, Chrome OS, Android, and Android WebView)?Yes
>
> Is this feature fully tested by web-platform-tests 
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
> ?Yes
>
>
> https://wpt.fyi/results/fetch/private-network-access?label=master&label=experimental&aligned
>
>
> Flag name on chrome://flagsBlockInsecurePrivateNetworkRequests
>
> Finch feature nameNone
>
> Non-finch justificationNone
>
> Requires code in //chrome?False
>
> Tracking bughttps://crbug.com/986744
>
> Launch bughttps://crbug.com/1129801
>
> Estimated milestones
> OriginTrial desktop last 126
> OriginTrial desktop first 94
> DevTrial on desktop 86
> OriginTrial Android last 126
> OriginTrial Android first 94
> DevTrial on Android 86
>
> Link to entry on the Chrome Platform Status
> https://chromestatus.com/feature/5436853517811712
>
> Links to previous Intent discussionsReady for Trial: 
> https://groups.google.com/a/chromium.org/g/blink-dev/c/EeGg7TxW6U4/m/7ZvqAqHLAwAJ
> Intent to Experiment: 
> https://groups.google.com/a/chromium.org/g/blink-dev/c/vlDZXlPb00k/m/1421ACiuAAAJ
> Intent to Extend Experiment: 
> https://groups.google.com/a/chromium.org/g/blink-dev/c/JPD001kqeck
> Intent to Ship: 
> https://groups.google.com/a/chromium.org/g/blink-dev/c/JPD001kqeck
>
>
> This intent message was generated by Chrome Platform Status 
> <https://chromestatus.com/>.
>
> -- 
> Yifan
>

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