moebius#158: The Performance Resource Timing (added support for "workerStart")

https://github.com/MoonchildProductions/moebius/pull/158

26 files changed, 746 insertions, 70 deletions

diff --git a/devtools/server/actors/webconsole.js b/devtools/server/actors/webconsole.js
index 9712ff32d..a1eba84ed 100644
--- a/devtools/server/actors/webconsole.js
+++ b/devtools/server/actors/webconsole.js
@@ -778,8 +778,8 @@ WebConsoleActor.prototype =
           }
 
           // See `window` definition. It isn't always a DOM Window.
-          let requestStartTime = this.window && this.window.performance ?
-            this.window.performance.timing.requestStart : 0;
+          let winStartTime = this.window && this.window.performance ?
+            this.window.performance.timing.navigationStart : 0;
 
           let cache = this.consoleAPIListener
                       .getCachedMessages(!this.parentActor.isRootActor);
@@ -787,7 +787,7 @@ WebConsoleActor.prototype =
             // Filter out messages that came from a ServiceWorker but happened
             // before the page was requested.
             if (aMessage.innerID === "ServiceWorker" &&
-                requestStartTime > aMessage.timeStamp) {
+                winStartTime > aMessage.timeStamp) {
               return;
             }
 
diff --git a/dom/performance/PerformanceResourceTiming.cpp b/dom/performance/PerformanceResourceTiming.cpp
index 60a20ca28..94df27408 100644
--- a/dom/performance/PerformanceResourceTiming.cpp
+++ b/dom/performance/PerformanceResourceTiming.cpp
@@ -42,8 +42,22 @@ PerformanceResourceTiming::~PerformanceResourceTiming()
 DOMHighResTimeStamp
 PerformanceResourceTiming::StartTime() const
 {
-  DOMHighResTimeStamp startTime = mTiming->RedirectStartHighRes();
-  return startTime ? startTime : mTiming->FetchStartHighRes();
+  // Force the start time to be the earliest of:
+  //  - RedirectStart
+  //  - WorkerStart
+  //  - AsyncOpen
+  // Ignore zero values.  The RedirectStart and WorkerStart values
+  // can come from earlier redirected channels prior to the AsyncOpen
+  // time being recorded.
+  DOMHighResTimeStamp redirect = mTiming->RedirectStartHighRes();
+  redirect = redirect ? redirect : DBL_MAX;
+
+  DOMHighResTimeStamp worker = mTiming->WorkerStartHighRes();
+  worker = worker ? worker : DBL_MAX;
+
+  DOMHighResTimeStamp asyncOpen = mTiming->AsyncOpenHighRes();
+
+  return std::min(asyncOpen, std::min(redirect, worker));
 }
 
 JSObject*
diff --git a/dom/performance/PerformanceResourceTiming.h b/dom/performance/PerformanceResourceTiming.h
index 2dd6b4a06..c2e6c0972 100644
--- a/dom/performance/PerformanceResourceTiming.h
+++ b/dom/performance/PerformanceResourceTiming.h
@@ -62,6 +62,12 @@ public:
     mNextHopProtocol = aNextHopProtocol;
   }
 
+  DOMHighResTimeStamp WorkerStart() const {
+    return mTiming && mTiming->TimingAllowed()
+        ? mTiming->WorkerStartHighRes()
+        : 0;
+  }
+
   DOMHighResTimeStamp FetchStart() const {
     return mTiming
         ? mTiming->FetchStartHighRes()
diff --git a/dom/performance/PerformanceTiming.cpp b/dom/performance/PerformanceTiming.cpp
index e2f76a21f..887a23938 100755
--- a/dom/performance/PerformanceTiming.cpp
+++ b/dom/performance/PerformanceTiming.cpp
@@ -73,6 +73,7 @@ PerformanceTiming::InitializeTimingInfo(nsITimedChannel* aChannel)
 {
   if (aChannel) {
     aChannel->GetAsyncOpen(&mAsyncOpen);
+    aChannel->GetDispatchFetchEventStart(&mWorkerStart);
     aChannel->GetAllRedirectsSameOrigin(&mAllRedirectsSameOrigin);
     aChannel->GetRedirectCount(&mRedirectCount);
     aChannel->GetRedirectStart(&mRedirectStart);
@@ -88,31 +89,39 @@ PerformanceTiming::InitializeTimingInfo(nsITimedChannel* aChannel)
     aChannel->GetResponseEnd(&mResponseEnd);
     aChannel->GetCacheReadEnd(&mCacheReadEnd);
 
-    // the performance timing api essentially requires that the event timestamps
-    // are >= asyncOpen().. but in truth the browser engages in a number of
-    // speculative activities that sometimes mean connections and lookups begin
-    // earlier. Workaround that here by just using asyncOpen as the minimum
-    // timestamp for dns and connection info.
+    // The performance timing api essentially requires that the event timestamps
+    // have a strict relation with each other. The truth, however, is the browser
+    // engages in a number of speculative activities that sometimes mean connections
+    // and lookups begin at different times. Workaround that here by clamping
+    // these values to what we expect FetchStart to be.  This means the later of
+    // AsyncOpen or WorkerStart times.
     if (!mAsyncOpen.IsNull()) {
-      if (!mDomainLookupStart.IsNull() && mDomainLookupStart < mAsyncOpen) {
-        mDomainLookupStart = mAsyncOpen;
+      // We want to clamp to the expected FetchStart value.  This is later of
+      // the AsyncOpen and WorkerStart values.
+      const TimeStamp* clampTime = &mAsyncOpen;
+      if (!mWorkerStart.IsNull() && mWorkerStart > mAsyncOpen) {
+        clampTime = &mWorkerStart;
       }
 
-      if (!mDomainLookupEnd.IsNull() && mDomainLookupEnd < mAsyncOpen) {
-        mDomainLookupEnd = mAsyncOpen;
+      if (!mDomainLookupStart.IsNull() && mDomainLookupStart < *clampTime) {
+        mDomainLookupStart = *clampTime;
       }
 
-      if (!mConnectStart.IsNull() && mConnectStart < mAsyncOpen) {
-        mConnectStart = mAsyncOpen;
+      if (!mDomainLookupEnd.IsNull() && mDomainLookupEnd < *clampTime) {
+        mDomainLookupEnd = *clampTime;
+      }
+
+      if (!mConnectStart.IsNull() && mConnectStart < *clampTime) {
+        mConnectStart = *clampTime;
       }
 
       if (mSecureConnection && !mSecureConnectionStart.IsNull() &&
-          mSecureConnectionStart < mAsyncOpen) {
-        mSecureConnectionStart = mAsyncOpen;
+          mSecureConnectionStart < *clampTime) {
+        mSecureConnectionStart = *clampTime;
       }
 
-      if (!mConnectEnd.IsNull() && mConnectEnd < mAsyncOpen) {
-        mConnectEnd = mAsyncOpen;
+      if (!mConnectEnd.IsNull() && mConnectEnd < *clampTime) {
+        mConnectEnd = *clampTime;
       }
     }
   }
@@ -131,9 +140,13 @@ PerformanceTiming::FetchStartHighRes()
     }
     MOZ_ASSERT(!mAsyncOpen.IsNull(), "The fetch start time stamp should always be "
         "valid if the performance timing is enabled");
-    mFetchStart = (!mAsyncOpen.IsNull())
-        ? TimeStampToDOMHighRes(mAsyncOpen)
-        : 0.0;
+    if (!mAsyncOpen.IsNull()) {
+      if (!mWorkerStart.IsNull() && mWorkerStart > mAsyncOpen) {
+        mFetchStart = TimeStampToDOMHighRes(mWorkerStart);
+      } else {
+        mFetchStart = TimeStampToDOMHighRes(mAsyncOpen);
+      }
+    }
   }
   return TimerClamping::ReduceMsTimeValue(mFetchStart);
 }
@@ -180,7 +193,7 @@ PerformanceTiming::TimingAllowed() const
   return mTimingAllowed;
 }
 
-uint16_t
+uint8_t
 PerformanceTiming::GetRedirectCount() const
 {
   if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized()) {
@@ -205,6 +218,26 @@ PerformanceTiming::ShouldReportCrossOriginRedirect() const
   return (mRedirectCount != 0) && mReportCrossOriginRedirect;
 }
 
+DOMHighResTimeStamp
+PerformanceTiming::AsyncOpenHighRes()
+{
+  if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized() ||
+      mAsyncOpen.IsNull()) {
+    return mZeroTime;
+  }
+  return TimeStampToReducedDOMHighResOrFetchStart(mAsyncOpen);
+}
+
+DOMHighResTimeStamp
+PerformanceTiming::WorkerStartHighRes()
+{
+  if (!nsContentUtils::IsPerformanceTimingEnabled() || !IsInitialized() ||
+      mWorkerStart.IsNull()) {
+    return mZeroTime;
+  }
+  return TimeStampToReducedDOMHighResOrFetchStart(mWorkerStart);
+}
+
 /**
  * RedirectStartHighRes() is used by both the navigation timing and the
  * resource timing. Since, navigation timing and resource timing check and
diff --git a/dom/performance/PerformanceTiming.h b/dom/performance/PerformanceTiming.h
index fc7e7d5bd..584ae0816 100755
--- a/dom/performance/PerformanceTiming.h
+++ b/dom/performance/PerformanceTiming.h
@@ -139,7 +139,7 @@ public:
     return TimerClamping::ReduceMsTimeValue(GetDOMTiming()->GetUnloadEventEnd());
   }
 
-  uint16_t GetRedirectCount() const;
+  uint8_t GetRedirectCount() const;
 
   // Checks if the resource is either same origin as the page that started
   // the load, or if the response contains the Timing-Allow-Origin header
@@ -155,7 +155,12 @@ public:
   // the timing-allow-origin check in HttpBaseChannel::TimingAllowCheck
   bool ShouldReportCrossOriginRedirect() const;
 
+  // The last channel's AsyncOpen time.  This may occur before the FetchStart
+  // in some cases.
+  DOMHighResTimeStamp AsyncOpenHighRes();
+
   // High resolution (used by resource timing)
+  DOMHighResTimeStamp WorkerStartHighRes();
   DOMHighResTimeStamp FetchStartHighRes();
   DOMHighResTimeStamp RedirectStartHighRes();
   DOMHighResTimeStamp RedirectEndHighRes();
@@ -253,6 +258,7 @@ private:
   DOMHighResTimeStamp mZeroTime;
 
   TimeStamp mAsyncOpen;
+  TimeStamp mWorkerStart;
   TimeStamp mRedirectStart;
   TimeStamp mRedirectEnd;
   TimeStamp mDomainLookupStart;
@@ -265,7 +271,7 @@ private:
   TimeStamp mCacheReadStart;
   TimeStamp mResponseEnd;
   TimeStamp mCacheReadEnd;
-  uint16_t mRedirectCount;
+  uint8_t mRedirectCount;
   bool mTimingAllowed;
   bool mAllRedirectsSameOrigin;
   bool mInitialized;
diff --git a/dom/webidl/PerformanceResourceTiming.webidl b/dom/webidl/PerformanceResourceTiming.webidl
index 021b84ae2..112228325 100644
--- a/dom/webidl/PerformanceResourceTiming.webidl
+++ b/dom/webidl/PerformanceResourceTiming.webidl
@@ -4,7 +4,7 @@
  * You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  * The origin of this IDL file is
- * http://w3c-test.org/webperf/specs/ResourceTiming/#performanceresourcetiming
+ * https://w3c.github.io/resource-timing/#performanceresourcetiming
  *
  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
  * liability, trademark and document use rules apply.
@@ -12,14 +12,10 @@
 
 interface PerformanceResourceTiming : PerformanceEntry
 {
-  // A string with the name of that element that initiated the load.
-  // If the initiator is a CSS resource, the initiatorType attribute must return
-  // the string "css".
-  // If the initiator is an XMLHttpRequest object, the initiatorType attribute
-  // must return the string "xmlhttprequest".
   readonly attribute DOMString initiatorType;
   readonly attribute DOMString nextHopProtocol;
 
+  readonly attribute DOMHighResTimeStamp workerStart;
   readonly attribute DOMHighResTimeStamp redirectStart;
   readonly attribute DOMHighResTimeStamp redirectEnd;
   readonly attribute DOMHighResTimeStamp fetchStart;
diff --git a/dom/workers/ServiceWorkerEvents.cpp b/dom/workers/ServiceWorkerEvents.cpp
index 780b2f5f8..1f79e2c92 100644
--- a/dom/workers/ServiceWorkerEvents.cpp
+++ b/dom/workers/ServiceWorkerEvents.cpp
@@ -12,6 +12,7 @@
 #include "nsINetworkInterceptController.h"
 #include "nsIOutputStream.h"
 #include "nsIScriptError.h"
+#include "nsITimedChannel.h"
 #include "nsIUnicodeDecoder.h"
 #include "nsIUnicodeEncoder.h"
 #include "nsContentPolicyUtils.h"
@@ -108,6 +109,12 @@ NS_IMETHODIMP
 CancelChannelRunnable::Run()
 {
   MOZ_ASSERT(NS_IsMainThread());
+
+  // TODO: When bug 1204254 is implemented, this time marker should be moved to
+  // the point where the body of the network request is complete.
+  mChannel->SetHandleFetchEventEnd(TimeStamp::Now());
+  mChannel->SaveTimeStampsToUnderlyingChannel();
+
   mChannel->Cancel(mStatus);
   mRegistration->MaybeScheduleUpdate();
   return NS_OK;
@@ -230,6 +237,9 @@ public:
       return NS_OK;
     }
 
+    mChannel->SetHandleFetchEventEnd(TimeStamp::Now());
+    mChannel->SaveTimeStampsToUnderlyingChannel();
+
     nsCOMPtr<nsIObserverService> obsService = services::GetObserverService();
     if (obsService) {
       obsService->NotifyObservers(underlyingChannel, "service-worker-synthesized-response", nullptr);
diff --git a/dom/workers/ServiceWorkerPrivate.cpp b/dom/workers/ServiceWorkerPrivate.cpp
index eaa548f95..24b2e11e6 100644
--- a/dom/workers/ServiceWorkerPrivate.cpp
+++ b/dom/workers/ServiceWorkerPrivate.cpp
@@ -13,6 +13,7 @@
 #include "nsINetworkInterceptController.h"
 #include "nsIPushErrorReporter.h"
 #include "nsISupportsImpl.h"
+#include "nsITimedChannel.h"
 #include "nsIUploadChannel2.h"
 #include "nsNetUtil.h"
 #include "nsProxyRelease.h"
@@ -1255,6 +1256,7 @@ class FetchEventRunnable : public ExtendableFunctionalEventWorkerRunnable
   nsCString mMethod;
   nsString mClientId;
   bool mIsReload;
+  bool mMarkLaunchServiceWorkerEnd;
   RequestCache mCacheMode;
   RequestMode mRequestMode;
   RequestRedirect mRequestRedirect;
@@ -1273,13 +1275,15 @@ public:
                      const nsACString& aScriptSpec,
                      nsMainThreadPtrHandle<ServiceWorkerRegistrationInfo>& aRegistration,
                      const nsAString& aDocumentId,
-                     bool aIsReload)
+                     bool aIsReload,
+                     bool aMarkLaunchServiceWorkerEnd)
     : ExtendableFunctionalEventWorkerRunnable(
         aWorkerPrivate, aKeepAliveToken, aRegistration)
     , mInterceptedChannel(aChannel)
     , mScriptSpec(aScriptSpec)
     , mClientId(aDocumentId)
     , mIsReload(aIsReload)
+    , mMarkLaunchServiceWorkerEnd(aMarkLaunchServiceWorkerEnd)
     , mCacheMode(RequestCache::Default)
     , mRequestMode(RequestMode::No_cors)
     , mRequestRedirect(RequestRedirect::Follow)
@@ -1417,6 +1421,12 @@ public:
   WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override
   {
     MOZ_ASSERT(aWorkerPrivate);
+
+    if (mMarkLaunchServiceWorkerEnd) {
+      mInterceptedChannel->SetLaunchServiceWorkerEnd(TimeStamp::Now());
+    }
+
+    mInterceptedChannel->SetDispatchFetchEventEnd(TimeStamp::Now());
     return DispatchFetchEvent(aCx, aWorkerPrivate);
   }
 
@@ -1445,6 +1455,10 @@ private:
     NS_IMETHOD Run() override
     {
       AssertIsOnMainThread();
+
+      mChannel->SetHandleFetchEventEnd(TimeStamp::Now());
+      mChannel->SaveTimeStampsToUnderlyingChannel();
+
       nsresult rv = mChannel->ResetInterception();
       NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
                            "Failed to resume intercepted network request");
@@ -1520,6 +1534,8 @@ private:
     event->PostInit(mInterceptedChannel, mRegistration, mScriptSpec);
     event->SetTrusted(true);
 
+    mInterceptedChannel->SetHandleFetchEventStart(TimeStamp::Now());
+
     RefPtr<EventTarget> target = do_QueryObject(aWorkerPrivate->GlobalScope());
     nsresult rv2 = target->DispatchDOMEvent(nullptr, event, nullptr, nullptr);
     if (NS_WARN_IF(NS_FAILED(rv2)) || !event->WaitToRespond()) {
@@ -1614,9 +1630,21 @@ ServiceWorkerPrivate::SendFetchEvent(nsIInterceptedChannel* aChannel,
   nsCOMPtr<nsIRunnable> failRunnable =
     NewRunnableMethod(aChannel, &nsIInterceptedChannel::ResetInterception);
 
-  nsresult rv = SpawnWorkerIfNeeded(FetchEvent, failRunnable, aLoadGroup);
+  aChannel->SetLaunchServiceWorkerStart(TimeStamp::Now());
+  aChannel->SetDispatchFetchEventStart(TimeStamp::Now());
+
+  bool newWorkerCreated = false;
+  nsresult rv = SpawnWorkerIfNeeded(FetchEvent,
+                                    failRunnable,
+                                    &newWorkerCreated,
+                                    aLoadGroup);
+       
   NS_ENSURE_SUCCESS(rv, rv);
 
+  if (!newWorkerCreated) {
+    aChannel->SetLaunchServiceWorkerEnd(TimeStamp::Now());
+  }
+
   nsMainThreadPtrHandle<nsIInterceptedChannel> handle(
     new nsMainThreadPtrHolder<nsIInterceptedChannel>(aChannel, false));
 
@@ -1646,7 +1674,7 @@ ServiceWorkerPrivate::SendFetchEvent(nsIInterceptedChannel* aChannel,
   RefPtr<FetchEventRunnable> r =
     new FetchEventRunnable(mWorkerPrivate, token, handle,
                            mInfo->ScriptSpec(), regInfo,
-                           aDocumentId, aIsReload);
+                           aDocumentId, aIsReload, newWorkerCreated);
   rv = r->Init();
   if (NS_WARN_IF(NS_FAILED(rv))) {
     return rv;
@@ -1669,6 +1697,7 @@ ServiceWorkerPrivate::SendFetchEvent(nsIInterceptedChannel* aChannel,
 nsresult
 ServiceWorkerPrivate::SpawnWorkerIfNeeded(WakeUpReason aWhy,
                                           nsIRunnable* aLoadFailedRunnable,
+                                          bool* aNewWorkerCreated,
                                           nsILoadGroup* aLoadGroup)
 {
   AssertIsOnMainThread();
@@ -1679,6 +1708,12 @@ ServiceWorkerPrivate::SpawnWorkerIfNeeded(WakeUpReason aWhy,
   // the overriden load group when intercepting a fetch.
   MOZ_ASSERT_IF(aWhy == FetchEvent, aLoadGroup);
 
+  // Defaults to no new worker created, but if there is one, we'll set the value
+  // to true at the end of this function.
+  if (aNewWorkerCreated) {
+    *aNewWorkerCreated = false;
+  }
+
   if (mWorkerPrivate) {
     mWorkerPrivate->UpdateOverridenLoadGroup(aLoadGroup);
     RenewKeepAliveToken(aWhy);
@@ -1762,6 +1797,10 @@ ServiceWorkerPrivate::SpawnWorkerIfNeeded(WakeUpReason aWhy,
 
   RenewKeepAliveToken(aWhy);
 
+  if (aNewWorkerCreated) {
+    *aNewWorkerCreated = true;
+  }
+
   return NS_OK;
 }
 
diff --git a/dom/workers/ServiceWorkerPrivate.h b/dom/workers/ServiceWorkerPrivate.h
index 8d59ea1d0..911b07a11 100644
--- a/dom/workers/ServiceWorkerPrivate.h
+++ b/dom/workers/ServiceWorkerPrivate.h
@@ -189,6 +189,7 @@ private:
   nsresult
   SpawnWorkerIfNeeded(WakeUpReason aWhy,
                       nsIRunnable* aLoadFailedRunnable,
+                      bool* aNewWorkerCreated = nullptr,
                       nsILoadGroup* aLoadGroup = nullptr);
 
   ~ServiceWorkerPrivate();
diff --git a/dom/workers/test/serviceworkers/chrome.ini b/dom/workers/test/serviceworkers/chrome.ini
index e064e7fd0..6d7dbebd0 100644
--- a/dom/workers/test/serviceworkers/chrome.ini
+++ b/dom/workers/test/serviceworkers/chrome.ini
@@ -3,6 +3,8 @@ skip-if = os == 'android'
 support-files =
   chrome_helpers.js
   empty.js
+  fetch.js
+  hello.html
   serviceworker.html
   serviceworkerinfo_iframe.html
   serviceworkermanager_iframe.html
@@ -10,6 +12,7 @@ support-files =
   worker.js
   worker2.js
 
+[test_devtools_serviceworker_interception.html]
 [test_privateBrowsing.html]
 [test_serviceworkerinfo.xul]
 [test_serviceworkermanager.xul]
diff --git a/dom/workers/test/serviceworkers/test_devtools_serviceworker_interception.html b/dom/workers/test/serviceworkers/test_devtools_serviceworker_interception.html
new file mode 100644
index 000000000..d49ebb2c9
--- /dev/null
+++ b/dom/workers/test/serviceworkers/test_devtools_serviceworker_interception.html
@@ -0,0 +1,168 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1168875 - test devtools serviceworker interception.</title>
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet"
+        type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<script class="testbody" type="text/javascript">
+
+// Constants
+const Ci = Components.interfaces;
+const workerScope = "http://mochi.test:8888/chrome/dom/workers/test/serviceworkers/";
+const workerURL = workerScope + "fetch.js";
+const contentPage = workerScope + "hello.html";
+
+function createTestWindow(aURL) {
+  var mainwindow = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                         .getInterface(Ci.nsIWebNavigation)
+                         .QueryInterface(Ci.nsIDocShellTreeItem)
+                         .rootTreeItem
+                         .QueryInterface(Ci.nsIInterfaceRequestor)
+                         .getInterface(Ci.nsIDOMWindow);
+  var win = mainwindow.OpenBrowserWindow(contentPage);
+
+  return new Promise(aResolve => {
+    win.addEventListener("DOMContentLoaded", function callback() {
+      if (win.content.location.href != aURL) {
+        win.gBrowser.loadURI(aURL);
+        return;
+      }
+
+      win.removeEventListener("DOMContentLoaded", callback);
+      aResolve(win.content);
+    });
+  });
+}
+
+function executeTest(aWindow) {
+  var registration;
+
+  return Promise.resolve()
+    // Should not be intercepted.
+    .then(_ => fetchAndCheckTimedChannel(aWindow, false, true, "hello.html"))
+
+    // Regist a service worker.
+    .then(_ => register(aWindow, workerURL, workerScope))
+    .then(r => registration = r)
+
+    // Should be intercpeted and synthesized.
+    .then(_ => fetchAndCheckTimedChannel(aWindow, true, false, "fake.html"))
+
+    // Should be intercepted but still fetch from network.
+    .then(_ => fetchAndCheckTimedChannel(aWindow, true, true,
+                                         "hello.html?ForBypassingHttpCache"))
+
+    // Tear down
+    .then(_ => registration.unregister());
+}
+
+function register(aWindow, aURL, aScope) {
+  return aWindow.navigator.serviceWorker.register(aURL, {scope: aScope})
+    .then(r => {
+      var worker = r.installing;
+      return new Promise(function(aResolve) {
+        worker.onstatechange = function() {
+          if (worker.state == "activated") {
+            aResolve(r);
+          }
+        }
+      });
+    });
+}
+
+function fetchAndCheckTimedChannel(aWindow, aIntercepted, aFetch, aURL) {
+  var resolveFunction;
+  var promise = new Promise(aResolve => resolveFunction = aResolve);
+
+  var topic = aFetch ? "http-on-examine-response"
+                     : "service-worker-synthesized-response";
+
+  function observer(aSubject) {
+    var channel = aSubject.QueryInterface(Ci.nsIChannel);
+    ok(channel.URI.spec.endsWith(aURL));
+
+    var tc = aSubject.QueryInterface(Ci.nsITimedChannel);
+
+    // Check service worker related timings.
+    var serviceWorkerTimings = [{start: tc.launchServiceWorkerStartTime,
+                                 end:   tc.launchServiceWorkerEndTime},
+                                {start: tc.dispatchFetchEventStartTime,
+                                 end:   tc.dispatchFetchEventEndTime},
+                                {start: tc.handleFetchEventStartTime,
+                                 end:   tc.handleFetchEventEndTime}];
+    if (aIntercepted) {
+      serviceWorkerTimings.reduce((aPreviousTimings, aCurrentTimings) => {
+        ok(aPreviousTimings.start <= aCurrentTimings.start,
+           "Start time order check.");
+        ok(aPreviousTimings.end <= aCurrentTimings.end,
+           "End time order check.");
+        ok(aCurrentTimings.start <= aCurrentTimings.end,
+           "Start time should be smaller than end time.");
+        return aCurrentTimings;
+      });
+    } else {
+      serviceWorkerTimings.forEach(aTimings => {
+        is(aTimings.start, 0);
+        is(aTimings.end, 0);
+      });
+    }
+
+    // Check network related timings.
+    var networkTimings = [tc.domainLookupStartTime,
+                          tc.domainLookupEndTime,
+                          tc.connectStartTime,
+                          tc.connectEndTime,
+                          tc.requestStartTime,
+                          tc.responseStartTime,
+                          tc.responseEndTime];
+    if (aFetch) {
+      networkTimings.reduce((aPreviousTiming, aCurrentTiming) => {
+        ok(aPreviousTiming <= aCurrentTiming);
+        return aCurrentTiming;
+      });
+    } else {
+      networkTimings.forEach(aTiming => is(aTiming, 0));
+    }
+
+    SpecialPowers.removeObserver(observer, topic);
+    resolveFunction();
+  }
+
+  SpecialPowers.addObserver(observer, topic, false);
+
+  // return promise;
+  return Promise.all([aWindow.fetch(aURL), promise]);
+}
+
+function runTest() {
+  return Promise.resolve()
+    .then(_ => createTestWindow(contentPage))
+    .then(w => executeTest(w))
+    .catch(e => ok(false, "Some test failed with error " + e))
+    .then(_ => SimpleTest.finish());
+}
+
+SimpleTest.waitForExplicitFinish();
+SpecialPowers.pushPrefEnv({"set": [
+  ["dom.serviceWorkers.exemptFromPerDomainMax", true],
+  ["dom.serviceWorkers.enabled", true],
+  ["dom.serviceWorkers.testing.enabled", true],
+]}, runTest);
+
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/netwerk/base/nsINetworkInterceptController.idl b/netwerk/base/nsINetworkInterceptController.idl
index 17d27de42..721b7a334 100644
--- a/netwerk/base/nsINetworkInterceptController.idl
+++ b/netwerk/base/nsINetworkInterceptController.idl
@@ -14,12 +14,16 @@ interface nsIURI;
 %{C++
 #include "nsIConsoleReportCollector.h"
 namespace mozilla {
+class TimeStamp;
+
 namespace dom {
 class ChannelInfo;
 }
 }
 %}
 
+native TimeStamp(mozilla::TimeStamp);
+
 [ptr] native ChannelInfo(mozilla::dom::ChannelInfo);
 
 /**
@@ -97,6 +101,30 @@ interface nsIInterceptedChannel : nsISupports
     [noscript]
     readonly attribute nsIConsoleReportCollector consoleReportCollector;
 
+    /**
+     * Save the timestamps of various service worker interception phases.
+     */
+    [noscript]
+    void SetLaunchServiceWorkerStart(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SetLaunchServiceWorkerEnd(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SetDispatchFetchEventStart(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SetDispatchFetchEventEnd(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SetHandleFetchEventStart(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SetHandleFetchEventEnd(in TimeStamp aTimeStamp);
+
+    [noscript]
+    void SaveTimeStampsToUnderlyingChannel();
+
 %{C++
     already_AddRefed<nsIConsoleReportCollector>
     GetConsoleReportCollector()
diff --git a/netwerk/base/nsITimedChannel.idl b/netwerk/base/nsITimedChannel.idl
index 13b65e7b8..83670a11e 100644
--- a/netwerk/base/nsITimedChannel.idl
+++ b/netwerk/base/nsITimedChannel.idl
@@ -21,7 +21,8 @@ interface nsITimedChannel : nsISupports {
   attribute boolean timingEnabled;
 
   // The number of redirects
-  attribute uint16_t redirectCount;
+  attribute uint8_t redirectCount;
+  attribute uint8_t internalRedirectCount;
 
   [noscript] readonly attribute TimeStamp channelCreation;
   [noscript] readonly attribute TimeStamp asyncOpen;
@@ -37,6 +38,15 @@ interface nsITimedChannel : nsISupports {
   [noscript] readonly attribute TimeStamp responseStart;
   [noscript] readonly attribute TimeStamp responseEnd;
 
+  // The following are only set when the request is intercepted by a service
+  // worker no matter the response is synthesized.
+  [noscript] attribute TimeStamp launchServiceWorkerStart;
+  [noscript] attribute TimeStamp launchServiceWorkerEnd;
+  [noscript] attribute TimeStamp dispatchFetchEventStart;
+  [noscript] attribute TimeStamp dispatchFetchEventEnd;
+  [noscript] attribute TimeStamp handleFetchEventStart;
+  [noscript] attribute TimeStamp handleFetchEventEnd;
+
   // The redirect attributes timings must be writeble, se we can transfer
   // the data from one channel to the redirected channel.
   [noscript] attribute TimeStamp redirectStart;
@@ -67,6 +77,12 @@ interface nsITimedChannel : nsISupports {
   // All following are PRTime versions of the above.
   readonly attribute PRTime channelCreationTime;
   readonly attribute PRTime asyncOpenTime;
+  readonly attribute PRTime launchServiceWorkerStartTime;
+  readonly attribute PRTime launchServiceWorkerEndTime;
+  readonly attribute PRTime dispatchFetchEventStartTime;
+  readonly attribute PRTime dispatchFetchEventEndTime;
+  readonly attribute PRTime handleFetchEventStartTime;
+  readonly attribute PRTime handleFetchEventEndTime;
   readonly attribute PRTime domainLookupStartTime;
   readonly attribute PRTime domainLookupEndTime;
   readonly attribute PRTime connectStartTime;
diff --git a/netwerk/ipc/NeckoChannelParams.ipdlh b/netwerk/ipc/NeckoChannelParams.ipdlh
index 4f4dcf6a9..bb7562c64 100644
--- a/netwerk/ipc/NeckoChannelParams.ipdlh
+++ b/netwerk/ipc/NeckoChannelParams.ipdlh
@@ -20,6 +20,7 @@ using struct mozilla::void_t from "ipc/IPCMessageUtils.h";
 using RequestHeaderTuples from "mozilla/net/PHttpChannelParams.h";
 using struct nsHttpAtom from "nsHttp.h";
 using class nsHttpResponseHead from "nsHttpResponseHead.h";
+using class mozilla::TimeStamp from "mozilla/TimeStamp.h";
 
 namespace mozilla {
 namespace net {
@@ -134,6 +135,12 @@ struct HttpChannelOpenArgs
   nsCString                   channelId;
   uint64_t                    contentWindowId;
   nsCString                   preferredAlternativeType;
+  TimeStamp                   launchServiceWorkerStart;
+  TimeStamp                   launchServiceWorkerEnd;
+  TimeStamp                   dispatchFetchEventStart;
+  TimeStamp                   dispatchFetchEventEnd;
+  TimeStamp                   handleFetchEventStart;
+  TimeStamp                   handleFetchEventEnd;
 };
 
 struct HttpChannelConnectArgs
diff --git a/netwerk/protocol/http/HttpBaseChannel.cpp b/netwerk/protocol/http/HttpBaseChannel.cpp
index 278c94db0..d161f9a43 100644
--- a/netwerk/protocol/http/HttpBaseChannel.cpp
+++ b/netwerk/protocol/http/HttpBaseChannel.cpp
@@ -105,6 +105,7 @@ HttpBaseChannel::HttpBaseChannel()
   , mHttpHandler(gHttpHandler)
   , mReferrerPolicy(REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE)
   , mRedirectCount(0)
+  , mInternalRedirectCount(0)
   , mForcePending(false)
   , mCorsIncludeCredentials(false)
   , mCorsMode(nsIHttpChannelInternal::CORS_MODE_NO_CORS)
@@ -3128,12 +3129,6 @@ HttpBaseChannel::SetupReplacementChannel(nsIURI       *newURI,
   // convey the mAllowPipelining and mAllowSTS flags
   httpChannel->SetAllowPipelining(mAllowPipelining);
   httpChannel->SetAllowSTS(mAllowSTS);
-  // convey the new redirection limit
-  // make sure we don't underflow
-  uint32_t redirectionLimit = mRedirectionLimit
-    ? mRedirectionLimit - 1
-    : 0;
-  httpChannel->SetRedirectionLimit(redirectionLimit);
 
   // convey the Accept header value
   {
@@ -3215,23 +3210,40 @@ HttpBaseChannel::SetupReplacementChannel(nsIURI       *newURI,
       do_QueryInterface(static_cast<nsIHttpChannel*>(this)));
   if (oldTimedChannel && newTimedChannel) {
     newTimedChannel->SetTimingEnabled(mTimingEnabled);
-    newTimedChannel->SetRedirectCount(mRedirectCount + 1);
+
+    if (redirectFlags & nsIChannelEventSink::REDIRECT_INTERNAL) {
+      int8_t newCount = mInternalRedirectCount + 1;
+      newTimedChannel->SetInternalRedirectCount(
+        std::max(newCount, mInternalRedirectCount));
+    } else {
+      int8_t newCount = mRedirectCount + 1;
+      newTimedChannel->SetRedirectCount(
+        std::max(newCount, mRedirectCount));
+    }
 
     // If the RedirectStart is null, we will use the AsyncOpen value of the
     // previous channel (this is the first redirect in the redirects chain).
     if (mRedirectStartTimeStamp.IsNull()) {
-      TimeStamp asyncOpen;
-      oldTimedChannel->GetAsyncOpen(&asyncOpen);
-      newTimedChannel->SetRedirectStart(asyncOpen);
-    }
-    else {
+      // Only do this for real redirects.  Internal redirects should be hidden.
+      if (!(redirectFlags & nsIChannelEventSink::REDIRECT_INTERNAL)) {
+        TimeStamp asyncOpen;
+        oldTimedChannel->GetAsyncOpen(&asyncOpen);
+        newTimedChannel->SetRedirectStart(asyncOpen);
+      }
+    } else {
       newTimedChannel->SetRedirectStart(mRedirectStartTimeStamp);
     }
 
-    // The RedirectEnd timestamp is equal to the previous channel response end.
-    TimeStamp prevResponseEnd;
-    oldTimedChannel->GetResponseEnd(&prevResponseEnd);
-    newTimedChannel->SetRedirectEnd(prevResponseEnd);
+    // For internal redirects just propagate the last redirect end time
+    // forward.  Otherwise the new redirect end time is the last response
+    // end time.
+    TimeStamp newRedirectEnd;
+    if (redirectFlags & nsIChannelEventSink::REDIRECT_INTERNAL) {
+      oldTimedChannel->GetRedirectEnd(&newRedirectEnd);
+    } else {
+      oldTimedChannel->GetResponseEnd(&newRedirectEnd);
+    }
+    newTimedChannel->SetRedirectEnd(newRedirectEnd);
 
     nsAutoString initiatorType;
     oldTimedChannel->GetInitiatorType(initiatorType);
@@ -3253,6 +3265,16 @@ HttpBaseChannel::SetupReplacementChannel(nsIURI       *newURI,
         mAllRedirectsPassTimingAllowCheck &&
         oldTimedChannel->TimingAllowCheck(principal));
     }
+
+    // Propagate service worker measurements across redirects.  The
+    // PeformanceResourceTiming.workerStart API expects to see the
+    // worker start time after a redirect.
+    newTimedChannel->SetLaunchServiceWorkerStart(mLaunchServiceWorkerStart);
+    newTimedChannel->SetLaunchServiceWorkerEnd(mLaunchServiceWorkerEnd);
+    newTimedChannel->SetDispatchFetchEventStart(mDispatchFetchEventStart);
+    newTimedChannel->SetDispatchFetchEventEnd(mDispatchFetchEventEnd);
+    newTimedChannel->SetHandleFetchEventStart(mHandleFetchEventStart);
+    newTimedChannel->SetHandleFetchEventEnd(mHandleFetchEventEnd);
   }
 
   // Pass the preferred alt-data type on to the new channel.
@@ -3318,20 +3340,34 @@ HttpBaseChannel::GetAsyncOpen(TimeStamp* _retval) {
  * redirects. This check must be done by the consumers.
  */
 NS_IMETHODIMP
-HttpBaseChannel::GetRedirectCount(uint16_t *aRedirectCount)
+HttpBaseChannel::GetRedirectCount(uint8_t *aRedirectCount)
 {
   *aRedirectCount = mRedirectCount;
   return NS_OK;
 }
 
 NS_IMETHODIMP
-HttpBaseChannel::SetRedirectCount(uint16_t aRedirectCount)
+HttpBaseChannel::SetRedirectCount(uint8_t aRedirectCount)
 {
   mRedirectCount = aRedirectCount;
   return NS_OK;
 }
 
 NS_IMETHODIMP
+HttpBaseChannel::GetInternalRedirectCount(uint8_t *aRedirectCount)
+{
+  *aRedirectCount = mInternalRedirectCount;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetInternalRedirectCount(uint8_t aRedirectCount)
+{
+  mInternalRedirectCount = aRedirectCount;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
 HttpBaseChannel::GetRedirectStart(TimeStamp* _retval)
 {
   *_retval = mRedirectStartTimeStamp;
@@ -3431,6 +3467,84 @@ HttpBaseChannel::TimingAllowCheck(nsIPrincipal *aOrigin, bool *_retval)
 }
 
 NS_IMETHODIMP
+HttpBaseChannel::GetLaunchServiceWorkerStart(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mLaunchServiceWorkerStart;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetLaunchServiceWorkerStart(TimeStamp aTimeStamp) {
+  mLaunchServiceWorkerStart = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::GetLaunchServiceWorkerEnd(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mLaunchServiceWorkerEnd;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetLaunchServiceWorkerEnd(TimeStamp aTimeStamp) {
+  mLaunchServiceWorkerEnd = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::GetDispatchFetchEventStart(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mDispatchFetchEventStart;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetDispatchFetchEventStart(TimeStamp aTimeStamp) {
+  mDispatchFetchEventStart = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::GetDispatchFetchEventEnd(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mDispatchFetchEventEnd;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetDispatchFetchEventEnd(TimeStamp aTimeStamp) {
+  mDispatchFetchEventEnd = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::GetHandleFetchEventStart(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mHandleFetchEventStart;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetHandleFetchEventStart(TimeStamp aTimeStamp) {
+  mHandleFetchEventStart = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::GetHandleFetchEventEnd(TimeStamp* _retval) {
+  MOZ_ASSERT(_retval);
+  *_retval = mHandleFetchEventEnd;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+HttpBaseChannel::SetHandleFetchEventEnd(TimeStamp aTimeStamp) {
+  mHandleFetchEventEnd = aTimeStamp;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
 HttpBaseChannel::GetDomainLookupStart(TimeStamp* _retval) {
   *_retval = mTransactionTimings.domainLookupStart;
   return NS_OK;
@@ -3520,6 +3634,12 @@ HttpBaseChannel::Get##name##Time(PRTime* _retval) {            \
 
 IMPL_TIMING_ATTR(ChannelCreation)
 IMPL_TIMING_ATTR(AsyncOpen)
+IMPL_TIMING_ATTR(LaunchServiceWorkerStart)
+IMPL_TIMING_ATTR(LaunchServiceWorkerEnd)
+IMPL_TIMING_ATTR(DispatchFetchEventStart)
+IMPL_TIMING_ATTR(DispatchFetchEventEnd)
+IMPL_TIMING_ATTR(HandleFetchEventStart)
+IMPL_TIMING_ATTR(HandleFetchEventEnd)
 IMPL_TIMING_ATTR(DomainLookupStart)
 IMPL_TIMING_ATTR(DomainLookupEnd)
 IMPL_TIMING_ATTR(ConnectStart)
diff --git a/netwerk/protocol/http/HttpBaseChannel.h b/netwerk/protocol/http/HttpBaseChannel.h
index c8184a601..9aa696a70 100644
--- a/netwerk/protocol/http/HttpBaseChannel.h
+++ b/netwerk/protocol/http/HttpBaseChannel.h
@@ -506,7 +506,9 @@ protected:
   // the HTML file.
   nsString                          mInitiatorType;
   // Number of redirects that has occurred.
-  int16_t                           mRedirectCount;
+  int8_t                            mRedirectCount;
+  // Number of internal redirects that has occurred.
+  int8_t                            mInternalRedirectCount;
   // A time value equal to the starting time of the fetch that initiates the
   // redirect.
   mozilla::TimeStamp                mRedirectStartTimeStamp;
@@ -519,6 +521,12 @@ protected:
   TimeStamp                         mAsyncOpenTime;
   TimeStamp                         mCacheReadStart;
   TimeStamp                         mCacheReadEnd;
+  TimeStamp                         mLaunchServiceWorkerStart;
+  TimeStamp                         mLaunchServiceWorkerEnd;
+  TimeStamp                         mDispatchFetchEventStart;
+  TimeStamp                         mDispatchFetchEventEnd;
+  TimeStamp                         mHandleFetchEventStart;
+  TimeStamp                         mHandleFetchEventEnd;
   // copied from the transaction before we null out mTransaction
   // so that the timing can still be queried from OnStopRequest
   TimingStruct                      mTransactionTimings;
diff --git a/netwerk/protocol/http/HttpChannelChild.cpp b/netwerk/protocol/http/HttpChannelChild.cpp
index f0b9e2136..6d09135c4 100644
--- a/netwerk/protocol/http/HttpChannelChild.cpp
+++ b/netwerk/protocol/http/HttpChannelChild.cpp
@@ -2132,6 +2132,13 @@ HttpChannelChild::ContinueAsyncOpen()
     return NS_ERROR_FAILURE;
   }
 
+  openArgs.launchServiceWorkerStart() = mLaunchServiceWorkerStart;
+  openArgs.launchServiceWorkerEnd()   = mLaunchServiceWorkerEnd;
+  openArgs.dispatchFetchEventStart()  = mDispatchFetchEventStart;
+  openArgs.dispatchFetchEventEnd()    = mDispatchFetchEventEnd;
+  openArgs.handleFetchEventStart()    = mHandleFetchEventStart;
+  openArgs.handleFetchEventEnd()      = mHandleFetchEventEnd;
+
   // The socket transport in the chrome process now holds a logical ref to us
   // until OnStopRequest, or we do a redirect, or we hit an IPDL error.
   AddIPDLReference();
diff --git a/netwerk/protocol/http/HttpChannelParent.cpp b/netwerk/protocol/http/HttpChannelParent.cpp
index 5f0859f28..90ed597a6 100644
--- a/netwerk/protocol/http/HttpChannelParent.cpp
+++ b/netwerk/protocol/http/HttpChannelParent.cpp
@@ -130,7 +130,13 @@ HttpChannelParent::Init(const HttpChannelCreationArgs& aArgs)
                        a.initialRwin(), a.blockAuthPrompt(),
                        a.suspendAfterSynthesizeResponse(),
                        a.allowStaleCacheContent(), a.contentTypeHint(),
-                       a.channelId(), a.contentWindowId(), a.preferredAlternativeType());
+                       a.channelId(), a.contentWindowId(), a.preferredAlternativeType(),
+                       a.launchServiceWorkerStart(),
+                       a.launchServiceWorkerEnd(),
+                       a.dispatchFetchEventStart(),
+                       a.dispatchFetchEventEnd(),
+                       a.handleFetchEventStart(),
+                       a.handleFetchEventEnd());
   }
   case HttpChannelCreationArgs::THttpChannelConnectArgs:
   {
@@ -329,7 +335,13 @@ HttpChannelParent::DoAsyncOpen(  const URIParams&           aURI,
                                  const nsCString&           aContentTypeHint,
                                  const nsCString&           aChannelId,
                                  const uint64_t&            aContentWindowId,
-                                 const nsCString&           aPreferredAlternativeType)
+                                 const nsCString&           aPreferredAlternativeType,
+                                 const TimeStamp&           aLaunchServiceWorkerStart,
+                                 const TimeStamp&           aLaunchServiceWorkerEnd,
+                                 const TimeStamp&           aDispatchFetchEventStart,
+                                 const TimeStamp&           aDispatchFetchEventEnd,
+                                 const TimeStamp&           aHandleFetchEventStart,
+                                 const TimeStamp&           aHandleFetchEventEnd)
 {
   nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
   if (!uri) {
@@ -534,6 +546,13 @@ HttpChannelParent::DoAsyncOpen(  const URIParams&           aURI,
   mChannel->SetInitialRwin(aInitialRwin);
   mChannel->SetBlockAuthPrompt(aBlockAuthPrompt);
 
+  mChannel->SetLaunchServiceWorkerStart(aLaunchServiceWorkerStart);
+  mChannel->SetLaunchServiceWorkerEnd(aLaunchServiceWorkerEnd);
+  mChannel->SetDispatchFetchEventStart(aDispatchFetchEventStart);
+  mChannel->SetDispatchFetchEventEnd(aDispatchFetchEventEnd);
+  mChannel->SetHandleFetchEventStart(aHandleFetchEventStart);
+  mChannel->SetHandleFetchEventEnd(aHandleFetchEventEnd);
+
   nsCOMPtr<nsIApplicationCacheChannel> appCacheChan =
     do_QueryObject(mChannel);
   nsCOMPtr<nsIApplicationCacheService> appCacheService =
@@ -1159,7 +1178,7 @@ HttpChannelParent::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)
   nsCString secInfoSerialization;
   UpdateAndSerializeSecurityInfo(secInfoSerialization);
 
-  uint16_t redirectCount = 0;
+  uint8_t redirectCount = 0;
   chan->GetRedirectCount(&redirectCount);
 
   nsCOMPtr<nsISupports> cacheKey;
diff --git a/netwerk/protocol/http/HttpChannelParent.h b/netwerk/protocol/http/HttpChannelParent.h
index a3b377d49..56854bb55 100644
--- a/netwerk/protocol/http/HttpChannelParent.h
+++ b/netwerk/protocol/http/HttpChannelParent.h
@@ -143,7 +143,13 @@ protected:
                    const nsCString&           aContentTypeHint,
                    const nsCString&           aChannelId,
                    const uint64_t&            aContentWindowId,
-                   const nsCString&           aPreferredAlternativeType);
+                   const nsCString&           aPreferredAlternativeType,
+                   const TimeStamp&           aLaunchServiceWorkerStart,
+                   const TimeStamp&           aLaunchServiceWorkerEnd,
+                   const TimeStamp&           aDispatchFetchEventStart,
+                   const TimeStamp&           aDispatchFetchEventEnd,
+                   const TimeStamp&           aHandleFetchEventStart,
+                   const TimeStamp&           aHandleFetchEventEnd);
 
   virtual bool RecvSetPriority(const uint16_t& priority) override;
   virtual bool RecvSetClassOfService(const uint32_t& cos) override;
diff --git a/netwerk/protocol/http/InterceptedChannel.cpp b/netwerk/protocol/http/InterceptedChannel.cpp
index 9e38e2734..2dadbe760 100644
--- a/netwerk/protocol/http/InterceptedChannel.cpp
+++ b/netwerk/protocol/http/InterceptedChannel.cpp
@@ -10,6 +10,7 @@
 #include "nsInputStreamPump.h"
 #include "nsIPipe.h"
 #include "nsIStreamListener.h"
+#include "nsITimedChannel.h"
 #include "nsHttpChannel.h"
 #include "HttpChannelChild.h"
 #include "nsHttpResponseHead.h"
@@ -134,6 +135,40 @@ InterceptedChannelBase::SetReleaseHandle(nsISupports* aHandle)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+InterceptedChannelBase::SaveTimeStampsToUnderlyingChannel()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIChannel> underlyingChannel;
+  nsresult rv = GetChannel(getter_AddRefs(underlyingChannel));
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  nsCOMPtr<nsITimedChannel> timedChannel =
+    do_QueryInterface(underlyingChannel);
+  MOZ_ASSERT(timedChannel);
+
+  rv = timedChannel->SetLaunchServiceWorkerStart(mLaunchServiceWorkerStart);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  rv = timedChannel->SetLaunchServiceWorkerEnd(mLaunchServiceWorkerEnd);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  rv = timedChannel->SetDispatchFetchEventStart(mDispatchFetchEventStart);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  rv = timedChannel->SetDispatchFetchEventEnd(mDispatchFetchEventEnd);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  rv = timedChannel->SetHandleFetchEventStart(mHandleFetchEventStart);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  rv = timedChannel->SetHandleFetchEventEnd(mHandleFetchEventEnd);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+  return rv;
+}
+
 /* static */
 already_AddRefed<nsIURI>
 InterceptedChannelBase::SecureUpgradeChannelURI(nsIChannel* aChannel)
diff --git a/netwerk/protocol/http/InterceptedChannel.h b/netwerk/protocol/http/InterceptedChannel.h
index 688f211de..efab7abca 100644
--- a/netwerk/protocol/http/InterceptedChannel.h
+++ b/netwerk/protocol/http/InterceptedChannel.h
@@ -46,6 +46,13 @@ protected:
   nsresult DoSynthesizeStatus(uint16_t aStatus, const nsACString& aReason);
   nsresult DoSynthesizeHeader(const nsACString& aName, const nsACString& aValue);
 
+  TimeStamp mLaunchServiceWorkerStart;
+  TimeStamp mLaunchServiceWorkerEnd;
+  TimeStamp mDispatchFetchEventStart;
+  TimeStamp mDispatchFetchEventEnd;
+  TimeStamp mHandleFetchEventStart;
+  TimeStamp mHandleFetchEventEnd;
+
   virtual ~InterceptedChannelBase();
 public:
   explicit InterceptedChannelBase(nsINetworkInterceptController* aController);
@@ -60,6 +67,50 @@ public:
   NS_IMETHOD GetConsoleReportCollector(nsIConsoleReportCollector** aCollectorOut) override;
   NS_IMETHOD SetReleaseHandle(nsISupports* aHandle) override;
 
+  NS_IMETHODIMP
+  SetLaunchServiceWorkerStart(TimeStamp aTimeStamp) override
+  {
+    mLaunchServiceWorkerStart = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP
+  SetLaunchServiceWorkerEnd(TimeStamp aTimeStamp) override
+  {
+    mLaunchServiceWorkerEnd = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP
+  SetDispatchFetchEventStart(TimeStamp aTimeStamp) override
+  {
+    mDispatchFetchEventStart = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP
+  SetDispatchFetchEventEnd(TimeStamp aTimeStamp) override
+  {
+    mDispatchFetchEventEnd = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP
+  SetHandleFetchEventStart(TimeStamp aTimeStamp) override
+  {
+    mHandleFetchEventStart = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP
+  SetHandleFetchEventEnd(TimeStamp aTimeStamp) override
+  {
+    mHandleFetchEventEnd = aTimeStamp;
+    return NS_OK;
+  }
+
+  NS_IMETHODIMP SaveTimeStampsToUnderlyingChannel() override;
+
   static already_AddRefed<nsIURI>
   SecureUpgradeChannelURI(nsIChannel* aChannel);
 };
diff --git a/netwerk/protocol/http/NullHttpChannel.cpp b/netwerk/protocol/http/NullHttpChannel.cpp
index 61efe3956..2954006ad 100644
--- a/netwerk/protocol/http/NullHttpChannel.cpp
+++ b/netwerk/protocol/http/NullHttpChannel.cpp
@@ -539,13 +539,25 @@ NullHttpChannel::SetTimingEnabled(bool aTimingEnabled)
 }
 
 NS_IMETHODIMP
-NullHttpChannel::GetRedirectCount(uint16_t *aRedirectCount)
+NullHttpChannel::GetRedirectCount(uint8_t *aRedirectCount)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 NS_IMETHODIMP
-NullHttpChannel::SetRedirectCount(uint16_t aRedirectCount)
+NullHttpChannel::SetRedirectCount(uint8_t aRedirectCount)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetInternalRedirectCount(uint8_t *aRedirectCount)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetInternalRedirectCount(uint8_t aRedirectCount)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
@@ -565,6 +577,90 @@ NullHttpChannel::GetAsyncOpen(mozilla::TimeStamp *aAsyncOpen)
 }
 
 NS_IMETHODIMP
+NullHttpChannel::GetLaunchServiceWorkerStart(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetLaunchServiceWorkerStart(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetLaunchServiceWorkerEnd(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetLaunchServiceWorkerEnd(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetDispatchFetchEventStart(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetDispatchFetchEventStart(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetDispatchFetchEventEnd(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetDispatchFetchEventEnd(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetHandleFetchEventStart(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetHandleFetchEventStart(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::GetHandleFetchEventEnd(mozilla::TimeStamp *_retval)
+{
+  MOZ_ASSERT(_retval);
+  *_retval = mAsyncOpenTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+NullHttpChannel::SetHandleFetchEventEnd(mozilla::TimeStamp aTimeStamp)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
 NullHttpChannel::GetDomainLookupStart(mozilla::TimeStamp *aDomainLookupStart)
 {
   *aDomainLookupStart = mAsyncOpenTime;
@@ -761,6 +857,12 @@ NullHttpChannel::Get##name##Time(PRTime* _retval) {            \
 
 IMPL_TIMING_ATTR(ChannelCreation)
 IMPL_TIMING_ATTR(AsyncOpen)
+IMPL_TIMING_ATTR(LaunchServiceWorkerStart)
+IMPL_TIMING_ATTR(LaunchServiceWorkerEnd)
+IMPL_TIMING_ATTR(DispatchFetchEventStart)
+IMPL_TIMING_ATTR(DispatchFetchEventEnd)
+IMPL_TIMING_ATTR(HandleFetchEventStart)
+IMPL_TIMING_ATTR(HandleFetchEventEnd)
 IMPL_TIMING_ATTR(DomainLookupStart)
 IMPL_TIMING_ATTR(DomainLookupEnd)
 IMPL_TIMING_ATTR(ConnectStart)
diff --git a/netwerk/protocol/http/nsHttpChannel.cpp b/netwerk/protocol/http/nsHttpChannel.cpp
index 94b0d9bf9..05699df62 100644
--- a/netwerk/protocol/http/nsHttpChannel.cpp
+++ b/netwerk/protocol/http/nsHttpChannel.cpp
@@ -5402,7 +5402,7 @@ nsHttpChannel::AsyncProcessRedirection(uint32_t redirectType)
     if (NS_EscapeURL(location.get(), -1, esc_OnlyNonASCII, locationBuf))
         location = locationBuf;
 
-    if (mRedirectionLimit == 0) {
+    if (mRedirectCount >= mRedirectionLimit || mInternalRedirectCount >= mRedirectionLimit) {
         LOG(("redirection limit reached!\n"));
         return NS_ERROR_REDIRECT_LOOP;
     }
diff --git a/testing/web-platform/meta/service-workers/service-worker/resource-timing.https.html.ini b/testing/web-platform/meta/service-workers/service-worker/resource-timing.https.html.ini
index b399d5f38..b6f02262b 100644
--- a/testing/web-platform/meta/service-workers/service-worker/resource-timing.https.html.ini
+++ b/testing/web-platform/meta/service-workers/service-worker/resource-timing.https.html.ini
@@ -1,9 +1,2 @@
 [resource-timing.https.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1178713
-  [Controlled resource loads]
-    expected: FAIL
-
-  [Non-controlled resource loads]
-    expected: FAIL
-
diff --git a/testing/web-platform/tests/service-workers/service-worker/resource-timing.https.html b/testing/web-platform/tests/service-workers/service-worker/resource-timing.https.html
index f33c41d71..3a1adfa48 100644
--- a/testing/web-platform/tests/service-workers/service-worker/resource-timing.https.html
+++ b/testing/web-platform/tests/service-workers/service-worker/resource-timing.https.html
@@ -13,6 +13,10 @@ function verify(performance, resource, description) {
     assert_greater_than(entry.workerStart, 0, description);
     assert_greater_than_equal(entry.workerStart, entry.startTime, description);
     assert_less_than_equal(entry.workerStart, entry.fetchStart, description);
+    assert_greater_than_equal(entry.responseStart, entry.fetchStart, description);
+    assert_greater_than_equal(entry.responseEnd, entry.responseStart, description);
+    assert_greater_than(entry.responseEnd, entry.fetchStart, description);
+    assert_greater_than(entry.duration, 0, description);
     if (resource.indexOf('redirect.py') != -1) {
         assert_less_than_equal(entry.workerStart, entry.redirectStart,
                                description);
diff --git a/testing/web-platform/tests/service-workers/service-worker/resources/resource-timing-worker.js b/testing/web-platform/tests/service-workers/service-worker/resources/resource-timing-worker.js
index 481a6536a..452876838 100644
--- a/testing/web-platform/tests/service-workers/service-worker/resources/resource-timing-worker.js
+++ b/testing/web-platform/tests/service-workers/service-worker/resources/resource-timing-worker.js
@@ -1,5 +1,9 @@
 self.addEventListener('fetch', function(event) {
     if (event.request.url.indexOf('dummy.js') != -1) {
-      event.respondWith(new Response());
+      event.respondWith(new Promise(resolve => {
+        // Slightly delay the response so we ensure we get a non-zero
+        // duration.
+        setTimeout(_ => resolve(new Response()), 100);
+      }));
     }
   });