Adding upstream version 125.0.1.upstream/125.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

20 files changed, 326 insertions, 171 deletions

diff --git a/netwerk/base/ContentRange.cpp b/netwerk/base/ContentRange.cpp
new file mode 100644
index 0000000000..dfae132550
--- /dev/null
+++ b/netwerk/base/ContentRange.cpp
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ContentRange.h"
+#include "nsContentUtils.h"
+
+mozilla::net::ContentRange::ContentRange(const nsACString& aRangeHeader,
+                                         uint64_t aSize)
+    : mStart(0), mEnd(0), mSize(0) {
+  auto parsed = nsContentUtils::ParseSingleRangeRequest(aRangeHeader, true);
+  // https://fetch.spec.whatwg.org/#ref-for-simple-range-header-value%E2%91%A1
+  // If rangeValue is failure, then return a network error.
+  if (!parsed) {
+    return;
+  }
+
+  // Sanity check: ParseSingleRangeRequest should handle these two cases.
+  // If rangeEndValue and rangeStartValue are null, then return failure.
+  MOZ_ASSERT(parsed->Start().isSome() || parsed->End().isSome());
+  // If rangeStartValue and rangeEndValue are numbers, and rangeStartValue
+  // is greater than rangeEndValue, then return failure.
+  MOZ_ASSERT(parsed->Start().isNothing() || parsed->End().isNothing() ||
+             *parsed->Start() <= *parsed->End());
+
+  // https://fetch.spec.whatwg.org/#ref-for-simple-range-header-value%E2%91%A1
+  // If rangeStart is null:
+  if (parsed->Start().isNothing()) {
+    // Set rangeStart to fullLength − rangeEnd.
+    mStart = aSize - *parsed->End();
+
+    // Set rangeEnd to rangeStart + rangeEnd − 1.
+    mEnd = mStart + *parsed->End() - 1;
+
+    // Otherwise:
+  } else {
+    // If rangeStart is greater than or equal to fullLength, then return a
+    // network error.
+    if (*parsed->Start() >= aSize) {
+      return;
+    }
+    mStart = *parsed->Start();
+
+    // If rangeEnd is null or rangeEnd is greater than or equal to fullLength,
+    // then set rangeEnd to fullLength − 1.
+    if (parsed->End().isNothing() || *parsed->End() >= aSize) {
+      mEnd = aSize - 1;
+    } else {
+      mEnd = *parsed->End();
+    }
+  }
+  mSize = aSize;
+}
+
+void mozilla::net::ContentRange::AsHeader(nsACString& aOutString) const {
+  aOutString.Assign("bytes "_ns);
+  aOutString.AppendInt(mStart);
+  aOutString.AppendLiteral("-");
+  aOutString.AppendInt(mEnd);
+  aOutString.AppendLiteral("/");
+  aOutString.AppendInt(mSize);
+}
diff --git a/netwerk/base/ContentRange.h b/netwerk/base/ContentRange.h
new file mode 100644
index 0000000000..36b15214eb
--- /dev/null
+++ b/netwerk/base/ContentRange.h
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set et cin ts=4 sw=2 sts=2: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ContentRange_h__
+#define ContentRange_h__
+
+#include "mozilla/Maybe.h"
+#include "nsString.h"
+#include "nsISupportsImpl.h"
+
+// nsIBaseChannel subclasses may support range headers when accessed via
+// Fetch or XMLHTTPRequest, even if they are not HTTP assets and so do not
+// normally have access to headers (such as the blob URLs). The ContentRange
+// class helps to encapsulate much of the common logic involved in parsing,
+// storing, validating, and writing out Content-Range headers.
+
+namespace mozilla::net {
+
+class ContentRange {
+ private:
+  ~ContentRange() = default;
+
+  uint64_t mStart{0};
+  uint64_t mEnd{0};
+  uint64_t mSize{0};
+
+ public:
+  uint64_t Start() const { return mStart; }
+  uint64_t End() const { return mEnd; }
+  uint64_t Size() const { return mSize; }
+  bool IsValid() const { return mStart < mSize; }
+  ContentRange(uint64_t aStart, uint64_t aEnd, uint64_t aSize)
+      : mStart(aStart), mEnd(aEnd), mSize(aSize) {}
+  ContentRange(const nsACString& aRangeHeader, uint64_t aSize);
+  void AsHeader(nsACString& aOutString) const;
+
+  NS_INLINE_DECL_REFCOUNTING(ContentRange)
+};
+
+}  // namespace mozilla::net
+
+#endif  // ContentRange_h__
diff --git a/netwerk/base/NetUtil.sys.mjs b/netwerk/base/NetUtil.sys.mjs
index 679c9979a7..c952fdeb33 100644
--- a/netwerk/base/NetUtil.sys.mjs
+++ b/netwerk/base/NetUtil.sys.mjs
@@ -66,7 +66,7 @@ export var NetUtil = {
     var observer;
     if (aCallback) {
       observer = {
-        onStartRequest(aRequest) {},
+        onStartRequest() {},
         onStopRequest(aRequest, aStatusCode) {
           aCallback(aStatusCode);
         },
@@ -118,7 +118,7 @@ export var NetUtil = {
       "@mozilla.org/network/simple-stream-listener;1"
     ].createInstance(Ci.nsISimpleStreamListener);
     listener.init(pipe.outputStream, {
-      onStartRequest(aRequest) {},
+      onStartRequest() {},
       onStopRequest(aRequest, aStatusCode) {
         pipe.outputStream.close();
         aCallback(pipe.inputStream, aStatusCode, aRequest);
diff --git a/netwerk/base/Predictor.cpp b/netwerk/base/Predictor.cpp
index de19d0e06e..0c604d9d9a 100644
--- a/netwerk/base/Predictor.cpp
+++ b/netwerk/base/Predictor.cpp
@@ -487,7 +487,9 @@ Predictor::PredictNative(nsIURI* targetURI, nsIURI* sourceURI,
   PREDICTOR_LOG(("Predictor::Predict"));
 
   if (IsNeckoChild()) {
-    MOZ_DIAGNOSTIC_ASSERT(gNeckoChild);
+    if (!gNeckoChild) {
+      return NS_ERROR_FAILURE;
+    }
 
     PREDICTOR_LOG(("    called on child process"));
     // If two different threads are predicting concurently, this will be
@@ -1237,7 +1239,9 @@ Predictor::LearnNative(nsIURI* targetURI, nsIURI* sourceURI,
   PREDICTOR_LOG(("Predictor::Learn"));
 
   if (IsNeckoChild()) {
-    MOZ_DIAGNOSTIC_ASSERT(gNeckoChild);
+    if (!gNeckoChild) {
+      return NS_ERROR_FAILURE;
+    }
 
     PREDICTOR_LOG(("    called on child process"));
 
@@ -1715,7 +1719,9 @@ Predictor::Reset() {
   PREDICTOR_LOG(("Predictor::Reset"));
 
   if (IsNeckoChild()) {
-    MOZ_DIAGNOSTIC_ASSERT(gNeckoChild);
+    if (!gNeckoChild) {
+      return NS_ERROR_FAILURE;
+    }
 
     PREDICTOR_LOG(("    forwarding to parent process"));
     gNeckoChild->SendPredReset();
diff --git a/netwerk/base/moz.build b/netwerk/base/moz.build
index e069a5f296..adeac62cd8 100644
--- a/netwerk/base/moz.build
+++ b/netwerk/base/moz.build
@@ -18,6 +18,7 @@ XPIDL_SOURCES += [
     "nsIAuthPromptCallback.idl",
     "nsIAuthPromptProvider.idl",
     "nsIBackgroundFileSaver.idl",
+    "nsIBaseChannel.idl",
     "nsIBufferedStreams.idl",
     "nsIByteRangeRequest.idl",
     "nsICacheInfoChannel.idl",
@@ -157,6 +158,7 @@ EXPORTS.mozilla += [
 EXPORTS.mozilla.net += [
     "CacheInfoIPCTypes.h",
     "CaptivePortalService.h",
+    "ContentRange.h",
     "Dashboard.h",
     "DashboardTypes.h",
     "DefaultURI.h",
@@ -178,6 +180,7 @@ UNIFIED_SOURCES += [
     "ArrayBufferInputStream.cpp",
     "BackgroundFileSaver.cpp",
     "CaptivePortalService.cpp",
+    "ContentRange.cpp",
     "Dashboard.cpp",
     "DefaultURI.cpp",
     "EventTokenBucket.cpp",
diff --git a/netwerk/base/nsBaseChannel.cpp b/netwerk/base/nsBaseChannel.cpp
index df8aa23db4..2671b5886a 100644
--- a/netwerk/base/nsBaseChannel.cpp
+++ b/netwerk/base/nsBaseChannel.cpp
@@ -8,7 +8,6 @@
 #include "nsContentUtils.h"
 #include "nsURLHelper.h"
 #include "nsNetCID.h"
-#include "nsMimeTypes.h"
 #include "nsUnknownDecoder.h"
 #include "nsIScriptSecurityManager.h"
 #include "nsMimeTypes.h"
@@ -302,6 +301,7 @@ NS_IMPL_RELEASE(nsBaseChannel)
 NS_INTERFACE_MAP_BEGIN(nsBaseChannel)
   NS_INTERFACE_MAP_ENTRY(nsIRequest)
   NS_INTERFACE_MAP_ENTRY(nsIChannel)
+  NS_INTERFACE_MAP_ENTRY(nsIBaseChannel)
   NS_INTERFACE_MAP_ENTRY(nsIThreadRetargetableRequest)
   NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
   NS_INTERFACE_MAP_ENTRY(nsITransportEventSink)
@@ -967,58 +967,28 @@ void nsBaseChannel::SetupNeckoTarget() {
   mNeckoTarget = GetMainThreadSerialEventTarget();
 }
 
-nsBaseChannel::ContentRange::ContentRange(const nsACString& aRangeHeader,
-                                          uint64_t aSize)
-    : mStart(0), mEnd(0), mSize(0) {
-  auto parsed = nsContentUtils::ParseSingleRangeRequest(aRangeHeader, true);
-  // https://fetch.spec.whatwg.org/#ref-for-simple-range-header-value%E2%91%A1
-  // If rangeValue is failure, then return a network error.
-  if (!parsed) {
-    return;
+NS_IMETHODIMP nsBaseChannel::GetContentRange(
+    RefPtr<mozilla::net::ContentRange>* aRange) {
+  if (aRange) {
+    *aRange = mContentRange;
   }
+  return NS_OK;
+}
 
-  // Sanity check: ParseSingleRangeRequest should handle these two cases.
-  // If rangeEndValue and rangeStartValue are null, then return failure.
-  MOZ_ASSERT(parsed->Start().isSome() || parsed->End().isSome());
-  // If rangeStartValue and rangeEndValue are numbers, and rangeStartValue
-  // is greater than rangeEndValue, then return failure.
-  MOZ_ASSERT(parsed->Start().isNothing() || parsed->End().isNothing() ||
-             *parsed->Start() <= *parsed->End());
-
-  // https://fetch.spec.whatwg.org/#ref-for-simple-range-header-value%E2%91%A1
-  // If rangeStart is null:
-  if (parsed->Start().isNothing()) {
-    // Set rangeStart to fullLength − rangeEnd.
-    mStart = aSize - *parsed->End();
-
-    // Set rangeEnd to rangeStart + rangeEnd − 1.
-    mEnd = mStart + *parsed->End() - 1;
-
-    // Otherwise:
-  } else {
-    // If rangeStart is greater than or equal to fullLength, then return a
-    // network error.
-    if (*parsed->Start() >= aSize) {
-      return;
-    }
-    mStart = *parsed->Start();
+NS_IMETHODIMP nsBaseChannel::SetContentRange(
+    RefPtr<mozilla::net::ContentRange> aRange) {
+  mContentRange = aRange;
+  return NS_OK;
+}
 
-    // If rangeEnd is null or rangeEnd is greater than or equal to fullLength,
-    // then set rangeEnd to fullLength − 1.
-    if (parsed->End().isNothing() || *parsed->End() >= aSize) {
-      mEnd = aSize - 1;
-    } else {
-      mEnd = *parsed->End();
-    }
+NS_IMETHODIMP nsBaseChannel::GetFullMimeType(RefPtr<TMimeType<char>>* aOut) {
+  if (aOut) {
+    *aOut = mFullMimeType;
   }
-  mSize = aSize;
+  return NS_OK;
 }
 
-void nsBaseChannel::ContentRange::AsHeader(nsACString& aOutString) const {
-  aOutString.Assign("bytes "_ns);
-  aOutString.AppendInt(mStart);
-  aOutString.AppendLiteral("-");
-  aOutString.AppendInt(mEnd);
-  aOutString.AppendLiteral("/");
-  aOutString.AppendInt(mSize);
+NS_IMETHODIMP nsBaseChannel::SetFullMimeType(RefPtr<TMimeType<char>> aType) {
+  mFullMimeType = aType;
+  return NS_OK;
 }
diff --git a/netwerk/base/nsBaseChannel.h b/netwerk/base/nsBaseChannel.h
index 179a24bf45..c0db8e2500 100644
--- a/netwerk/base/nsBaseChannel.h
+++ b/netwerk/base/nsBaseChannel.h
@@ -6,13 +6,16 @@
 #ifndef nsBaseChannel_h__
 #define nsBaseChannel_h__
 
+#include "mozilla/dom/MimeType.h"
 #include "mozilla/Maybe.h"
 #include "mozilla/MozPromise.h"
 #include "mozilla/UniquePtr.h"
+#include "mozilla/net/ContentRange.h"
 #include "mozilla/net/NeckoTargetHolder.h"
 #include "mozilla/net/PrivateBrowsingChannel.h"
 #include "nsHashPropertyBag.h"
 #include "nsIAsyncVerifyRedirectCallback.h"
+#include "nsIBaseChannel.h"
 #include "nsIChannel.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsILoadGroup.h"
@@ -46,6 +49,7 @@ class nsICancelable;
 
 class nsBaseChannel
     : public nsHashPropertyBag,
+      public nsIBaseChannel,
       public nsIChannel,
       public nsIThreadRetargetableRequest,
       public nsIInterfaceRequestor,
@@ -58,6 +62,7 @@ class nsBaseChannel
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_NSIREQUEST
   NS_DECL_NSICHANNEL
+  NS_DECL_NSIBASECHANNEL
   NS_DECL_NSIINTERFACEREQUESTOR
   NS_DECL_NSITRANSPORTEVENTSINK
   NS_DECL_NSIASYNCVERIFYREDIRECTCALLBACK
@@ -197,44 +202,6 @@ class nsBaseChannel
     return mPumpingData || mWaitingOnAsyncRedirect;
   }
 
-  // Blob requests may specify a range header. We must parse, validate, and
-  // store that info in a place where BlobURLInputStream::StoreBlobImplStream
-  // can access it. This class helps to encapsulate that logic.
-  class ContentRange {
-   private:
-    uint64_t mStart;
-    uint64_t mEnd;
-    uint64_t mSize;
-
-   public:
-    uint64_t Start() const { return mStart; }
-    uint64_t End() const { return mEnd; }
-    uint64_t Size() const { return mSize; }
-    bool IsValid() const { return mStart < mSize; }
-    ContentRange() : mStart(0), mEnd(0), mSize(0) {}
-    ContentRange(uint64_t aStart, uint64_t aEnd, uint64_t aSize)
-        : mStart(aStart), mEnd(aEnd), mSize(aSize) {}
-    ContentRange(const nsACString& aRangeHeader, uint64_t aSize);
-    void AsHeader(nsACString& aOutString) const;
-  };
-
-  const mozilla::Maybe<ContentRange>& GetContentRange() const {
-    return mContentRange;
-  }
-
-  void SetContentRange(uint64_t aStart, uint64_t aEnd, uint64_t aSize) {
-    mContentRange.emplace(ContentRange(aStart, aEnd, aSize));
-  }
-
-  bool SetContentRange(const nsACString& aRangeHeader, uint64_t aSize) {
-    auto range = ContentRange(aRangeHeader, aSize);
-    if (!range.IsValid()) {
-      return false;
-    }
-    mContentRange.emplace(range);
-    return true;
-  }
-
   // Helper function for querying the channel's notification callbacks.
   template <class T>
   void GetCallback(nsCOMPtr<T>& result) {
@@ -325,7 +292,8 @@ class nsBaseChannel
   bool mWaitingOnAsyncRedirect{false};
   bool mOpenRedirectChannel{false};
   uint32_t mRedirectFlags{0};
-  mozilla::Maybe<ContentRange> mContentRange;
+  RefPtr<mozilla::net::ContentRange> mContentRange;
+  RefPtr<CMimeType> mFullMimeType;
 
  protected:
   nsCString mContentType;
diff --git a/netwerk/base/nsIBaseChannel.idl b/netwerk/base/nsIBaseChannel.idl
new file mode 100644
index 0000000000..5f2fe1517d
--- /dev/null
+++ b/netwerk/base/nsIBaseChannel.idl
@@ -0,0 +1,63 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+%{C++
+#include "mozilla/dom/MimeType.h"
+#include "mozilla/net/ContentRange.h"
+%}
+
+/**
+ * The nsIBaseChannel interface allows C++ code to query the interface
+ * of channels safely to gain access to content range functionality.
+ * This allows subclasses to optionally handle range-requests on their
+ * types using fetch/XMLHttpRequest even if they are not accessed via
+ * HTTP and therefore normally do not have support for headers.
+ */
+
+native ContentRangeRef(RefPtr<mozilla::net::ContentRange>);
+native MimeTypeRef(RefPtr<TMimeType<char>>);
+
+[uuid(036d5cd7-9a53-40e3-9c72-c2ffaa15aa2b)]
+interface nsIBaseChannel : nsISupports {
+
+  /**
+   * Used by fetch and XMLHttpRequest to get only the range specified in the
+   * Range request header (if given) for the response body (e.g, for blob URLs)
+   */
+  attribute ContentRangeRef contentRange;
+
+  /**
+   * Used by fetch and XMLHttpRequest to get the standards-compliant value they
+   * should set for the Content-Type header on response (if nullptr, they will
+   * use Firefox-specific values from nsIChannel::GetContentType and GetCharset).
+   */
+  attribute MimeTypeRef fullMimeType;
+
+%{C++
+  RefPtr<mozilla::net::ContentRange> ContentRange() {
+    RefPtr<mozilla::net::ContentRange> range;
+    mozilla::Unused << GetContentRange(&range);
+    return range;
+  }
+
+  bool SetContentRangeFromHeader(const nsACString& aHeader, uint64_t aSize) {
+    RefPtr<mozilla::net::ContentRange> range =
+      new mozilla::net::ContentRange(aHeader, aSize);
+    if (!range->IsValid()) {
+      return false;
+    }
+    SetContentRange(range);
+    return true;
+  }
+
+  RefPtr<CMimeType> FullMimeType() {
+    RefPtr<CMimeType> type;
+    mozilla::Unused << GetFullMimeType(&type);
+    return type;
+  }
+%}
+
+};
diff --git a/netwerk/base/nsISecureBrowserUI.idl b/netwerk/base/nsISecureBrowserUI.idl
index 3984310d93..6197a9adff 100644
--- a/netwerk/base/nsISecureBrowserUI.idl
+++ b/netwerk/base/nsISecureBrowserUI.idl
@@ -15,7 +15,3 @@ interface nsISecureBrowserUI : nsISupports
     readonly attribute bool isSecureContext;
     readonly attribute nsITransportSecurityInfo secInfo;
 };
-
-%{C++
-#define NS_SECURE_BROWSER_UI_CONTRACTID "@mozilla.org/secure_browser_ui;1"
-%}
diff --git a/netwerk/base/nsISystemProxySettings.idl b/netwerk/base/nsISystemProxySettings.idl
index 9cd561fb64..935da146af 100644
--- a/netwerk/base/nsISystemProxySettings.idl
+++ b/netwerk/base/nsISystemProxySettings.idl
@@ -39,4 +39,9 @@ interface nsISystemProxySettings : nsISupports
                                in AUTF8String testScheme,
                                in AUTF8String testHost,
                                in int32_t     testPort);
+
+    /**
+     * Check if system settings are configured to use WPAD
+     */
+    readonly attribute bool systemWPADSetting;
 };
diff --git a/netwerk/base/nsIURLParser.idl b/netwerk/base/nsIURLParser.idl
index 3d6ac19b8c..209c04d888 100644
--- a/netwerk/base/nsIURLParser.idl
+++ b/netwerk/base/nsIURLParser.idl
@@ -90,9 +90,3 @@ interface nsIURLParser : nsISupports
                           out unsigned long basenamePos,  out long basenameLen,
                           out unsigned long extensionPos, out long extensionLen);
 };
-
-%{C++
-// url parser key for use with the category manager
-// mapping from scheme to url parser.
-#define NS_IURLPARSER_KEY "@mozilla.org/urlparser;1"
-%}
diff --git a/netwerk/base/nsLoadGroup.cpp b/netwerk/base/nsLoadGroup.cpp
index 3e2445b6ae..0122e13ad2 100644
--- a/netwerk/base/nsLoadGroup.cpp
+++ b/netwerk/base/nsLoadGroup.cpp
@@ -1021,12 +1021,6 @@ void nsLoadGroup::TelemetryReportChannel(nsITimedChannel* aTimedChannel,
   if (httpChannel && NS_SUCCEEDED(httpChannel->GetHasHTTPSRR(&hasHTTPSRR)) &&
       cacheReadStart.IsNull() && cacheReadEnd.IsNull() &&
       !requestStart.IsNull()) {
-    nsCString key = (hasHTTPSRR) ? ((aDefaultRequest) ? "uses_https_rr_page"_ns
-                                                      : "uses_https_rr_sub"_ns)
-                                 : ((aDefaultRequest) ? "no_https_rr_page"_ns
-                                                      : "no_https_rr_sub"_ns);
-    Telemetry::AccumulateTimeDelta(Telemetry::HTTPS_RR_OPEN_TO_FIRST_SENT, key,
-                                   asyncOpen, requestStart);
     TimeDuration elapsed = requestStart - asyncOpen;
     if (hasHTTPSRR) {
       if (aDefaultRequest) {
diff --git a/netwerk/base/nsNetUtil.cpp b/netwerk/base/nsNetUtil.cpp
index 4c03cf63c3..ac86d8fa32 100644
--- a/netwerk/base/nsNetUtil.cpp
+++ b/netwerk/base/nsNetUtil.cpp
@@ -96,7 +96,9 @@
 #include "nsSocketTransportService2.h"
 #include "nsViewSourceHandler.h"
 #include "nsJARURI.h"
-#include "nsIconURI.h"
+#ifndef XP_IOS
+#  include "nsIconURI.h"
+#endif
 #include "nsAboutProtocolHandler.h"
 #include "nsResProtocolHandler.h"
 #include "mozilla/net/ExtensionProtocolHandler.h"
@@ -1951,11 +1953,13 @@ nsresult NS_NewURI(nsIURI** aURI, const nsACString& aSpec,
         .Finalize(aURI);
   }
 
+#ifndef XP_IOS
   if (scheme.EqualsLiteral("moz-icon")) {
     return NS_MutateURI(new nsMozIconURI::Mutator())
         .SetSpec(aSpec)
         .Finalize(aURI);
   }
+#endif
 
 #ifdef MOZ_WIDGET_GTK
   if (scheme.EqualsLiteral("smb") || scheme.EqualsLiteral("sftp")) {
diff --git a/netwerk/base/nsPACMan.cpp b/netwerk/base/nsPACMan.cpp
index 0cf66c8ee6..d4c6c4bd79 100644
--- a/netwerk/base/nsPACMan.cpp
+++ b/netwerk/base/nsPACMan.cpp
@@ -502,6 +502,13 @@ nsresult nsPACMan::PostQuery(PendingPACQuery* query) {
   return NS_OK;
 }
 
+// check if proxy settings are configured for WPAD
+bool IsProxyConfigValidForWPAD(int proxyConfigType, bool wpadSystemSettings) {
+  return proxyConfigType == nsIProtocolProxyService::PROXYCONFIG_WPAD ||
+         (proxyConfigType == nsIProtocolProxyService::PROXYCONFIG_SYSTEM &&
+          wpadSystemSettings);
+}
+
 nsresult nsPACMan::LoadPACFromURI(const nsACString& aSpec) {
   return LoadPACFromURI(aSpec, true);
 }
@@ -541,7 +548,7 @@ nsresult nsPACMan::LoadPACFromURI(const nsACString& aSpec,
     if (NS_FAILED(rv)) {
       return rv;
     }
-    if (mProxyConfigType != nsIProtocolProxyService::PROXYCONFIG_WPAD) {
+    if (!IsProxyConfigValidForWPAD(mProxyConfigType, mAutoDetect)) {
       LOG(
           ("LoadPACFromURI - Aborting WPAD autodetection because the pref "
            "doesn't match anymore"));
@@ -595,7 +602,7 @@ nsresult nsPACMan::GetPACFromDHCP(nsACString& aSpec) {
 nsresult nsPACMan::ConfigureWPAD(nsACString& aSpec) {
   MOZ_ASSERT(!NS_IsMainThread(), "wrong thread");
 
-  if (mProxyConfigType != nsIProtocolProxyService::PROXYCONFIG_WPAD) {
+  if (!IsProxyConfigValidForWPAD(mProxyConfigType, mAutoDetect)) {
     LOG(
         ("ConfigureWPAD - Aborting WPAD autodetection because the pref "
          "doesn't match anymore"));
diff --git a/netwerk/base/nsProtocolProxyService.cpp b/netwerk/base/nsProtocolProxyService.cpp
index 9f721f94e8..7ccfc9363a 100644
--- a/netwerk/base/nsProtocolProxyService.cpp
+++ b/netwerk/base/nsProtocolProxyService.cpp
@@ -621,28 +621,29 @@ nsAsyncResolveRequest::AsyncApplyFilters::Cancel(nsresult reason) {
   return NS_OK;
 }
 
-// Bug 1366133: make GetPACURI off-main-thread since it may hang on Windows
-// platform
-class AsyncGetPACURIRequest final : public nsIRunnable {
+// Bug 1366133: make GetPACURI and GetSystemWPADSetting off-main-thread since it
+// may hang on Windows platform
+class AsyncGetPACURIRequestOrSystemWPADSetting final : public nsIRunnable {
  public:
   NS_DECL_THREADSAFE_ISUPPORTS
 
   using CallbackFunc = nsresult (nsProtocolProxyService::*)(bool, bool,
                                                             nsresult,
-                                                            const nsACString&);
+                                                            const nsACString&,
+                                                            bool);
 
-  AsyncGetPACURIRequest(nsProtocolProxyService* aService,
-                        CallbackFunc aCallback,
-                        nsISystemProxySettings* aSystemProxySettings,
-                        bool aMainThreadOnly, bool aForceReload,
-                        bool aResetPACThread)
+  AsyncGetPACURIRequestOrSystemWPADSetting(
+      nsProtocolProxyService* aService, CallbackFunc aCallback,
+      nsISystemProxySettings* aSystemProxySettings, bool aMainThreadOnly,
+      bool aForceReload, bool aResetPACThread, bool aSystemWPADAllowed)
       : mIsMainThreadOnly(aMainThreadOnly),
         mService(aService),
         mServiceHolder(do_QueryObject(aService)),
         mCallback(aCallback),
         mSystemProxySettings(aSystemProxySettings),
         mForceReload(aForceReload),
-        mResetPACThread(aResetPACThread) {
+        mResetPACThread(aResetPACThread),
+        mSystemWPADAllowed(aSystemWPADAllowed) {
     MOZ_ASSERT(NS_IsMainThread());
     Unused << mIsMainThreadOnly;
   }
@@ -650,21 +651,30 @@ class AsyncGetPACURIRequest final : public nsIRunnable {
   NS_IMETHOD Run() override {
     MOZ_ASSERT(NS_IsMainThread() == mIsMainThreadOnly);
 
+    nsresult rv;
     nsCString pacUri;
-    nsresult rv = mSystemProxySettings->GetPACURI(pacUri);
+    bool systemWPADSetting = false;
+    if (mSystemWPADAllowed) {
+      mSystemProxySettings->GetSystemWPADSetting(&systemWPADSetting);
+    }
+
+    rv = mSystemProxySettings->GetPACURI(pacUri);
 
     nsCOMPtr<nsIRunnable> event =
-        NewNonOwningCancelableRunnableMethod<bool, bool, nsresult, nsCString>(
-            "AsyncGetPACURIRequestCallback", mService, mCallback, mForceReload,
-            mResetPACThread, rv, pacUri);
+        NewNonOwningCancelableRunnableMethod<bool, bool, nsresult, nsCString,
+                                             bool>(
+            "AsyncGetPACURIRequestOrSystemWPADSettingCallback", mService,
+            mCallback, mForceReload, mResetPACThread, rv, pacUri,
+            systemWPADSetting);
 
     return NS_DispatchToMainThread(event);
   }
 
  private:
-  ~AsyncGetPACURIRequest() {
-    NS_ReleaseOnMainThread("AsyncGetPACURIRequest::mServiceHolder",
-                           mServiceHolder.forget());
+  ~AsyncGetPACURIRequestOrSystemWPADSetting() {
+    NS_ReleaseOnMainThread(
+        "AsyncGetPACURIRequestOrSystemWPADSetting::mServiceHolder",
+        mServiceHolder.forget());
   }
 
   bool mIsMainThreadOnly;
@@ -676,9 +686,10 @@ class AsyncGetPACURIRequest final : public nsIRunnable {
 
   bool mForceReload;
   bool mResetPACThread;
+  bool mSystemWPADAllowed;
 };
 
-NS_IMPL_ISUPPORTS(AsyncGetPACURIRequest, nsIRunnable)
+NS_IMPL_ISUPPORTS(AsyncGetPACURIRequestOrSystemWPADSetting, nsIRunnable)
 
 //----------------------------------------------------------------------------
 
@@ -847,8 +858,8 @@ nsresult nsProtocolProxyService::ReloadNetworkPAC() {
   return NS_OK;
 }
 
-nsresult nsProtocolProxyService::AsyncConfigureFromPAC(bool aForceReload,
-                                                       bool aResetPACThread) {
+nsresult nsProtocolProxyService::AsyncConfigureWPADOrFromPAC(
+    bool aForceReload, bool aResetPACThread, bool aSystemWPADAllowed) {
   MOZ_ASSERT(NS_IsMainThread());
 
   bool mainThreadOnly;
@@ -857,9 +868,10 @@ nsresult nsProtocolProxyService::AsyncConfigureFromPAC(bool aForceReload,
     return rv;
   }
 
-  nsCOMPtr<nsIRunnable> req = new AsyncGetPACURIRequest(
-      this, &nsProtocolProxyService::OnAsyncGetPACURI, mSystemProxySettings,
-      mainThreadOnly, aForceReload, aResetPACThread);
+  nsCOMPtr<nsIRunnable> req = new AsyncGetPACURIRequestOrSystemWPADSetting(
+      this, &nsProtocolProxyService::OnAsyncGetPACURIOrSystemWPADSetting,
+      mSystemProxySettings, mainThreadOnly, aForceReload, aResetPACThread,
+      aSystemWPADAllowed);
 
   if (mainThreadOnly) {
     return req->Run();
@@ -869,17 +881,24 @@ nsresult nsProtocolProxyService::AsyncConfigureFromPAC(bool aForceReload,
                                    nsIEventTarget::DISPATCH_NORMAL);
 }
 
-nsresult nsProtocolProxyService::OnAsyncGetPACURI(bool aForceReload,
-                                                  bool aResetPACThread,
-                                                  nsresult aResult,
-                                                  const nsACString& aUri) {
+nsresult nsProtocolProxyService::OnAsyncGetPACURIOrSystemWPADSetting(
+    bool aForceReload, bool aResetPACThread, nsresult aResult,
+    const nsACString& aUri, bool aSystemWPADSetting) {
   MOZ_ASSERT(NS_IsMainThread());
 
   if (aResetPACThread) {
     ResetPACThread();
   }
 
-  if (NS_SUCCEEDED(aResult) && !aUri.IsEmpty()) {
+  if (aSystemWPADSetting) {
+    if (mSystemProxySettings || !mPACMan) {
+      mSystemProxySettings = nullptr;
+      ResetPACThread();
+    }
+
+    nsAutoCString tempString;
+    ConfigureFromPAC(EmptyCString(), false);
+  } else if (NS_SUCCEEDED(aResult) && !aUri.IsEmpty()) {
     ConfigureFromPAC(PromiseFlatCString(aUri), aForceReload);
   }
 
@@ -960,7 +979,8 @@ void nsProtocolProxyService::PrefsChanged(nsIPrefBranch* prefBranch,
   auto invokeCallback =
       MakeScopeExit([&] { NotifyProxyConfigChangedInternal(); });
 
-  if (!pref || !strcmp(pref, PROXY_PREF("type"))) {
+  if (!pref || !strcmp(pref, PROXY_PREF("type")) ||
+      !strcmp(pref, PROXY_PREF("system_wpad"))) {
     int32_t type = -1;
     rv = prefBranch->GetIntPref(PROXY_PREF("type"), &type);
     if (NS_SUCCEEDED(rv)) {
@@ -1076,9 +1096,12 @@ void nsProtocolProxyService::PrefsChanged(nsIPrefBranch* prefBranch,
     } else if (mProxyConfig == PROXYCONFIG_WPAD) {
       LOG(("Auto-detecting proxy - Reset Pac Thread"));
       ResetPACThread();
+    } else if (mSystemProxySettings && mProxyConfig == PROXYCONFIG_SYSTEM &&
+               StaticPrefs::network_proxy_system_wpad()) {
+      AsyncConfigureWPADOrFromPAC(false, false, true);
     } else if (mSystemProxySettings) {
       // Get System Proxy settings if available
-      AsyncConfigureFromPAC(false, false);
+      AsyncConfigureWPADOrFromPAC(false, false, false);
     }
     if (!tempString.IsEmpty() || mProxyConfig == PROXYCONFIG_WPAD) {
       ConfigureFromPAC(tempString, false);
@@ -1478,7 +1501,8 @@ nsProtocolProxyService::ReloadPAC() {
     prefs->GetCharPref(PROXY_PREF("autoconfig_url"), pacSpec);
   } else if (type == PROXYCONFIG_SYSTEM) {
     if (mSystemProxySettings) {
-      AsyncConfigureFromPAC(true, true);
+      AsyncConfigureWPADOrFromPAC(true, true,
+                                  StaticPrefs::network_proxy_system_wpad());
     } else {
       ResetPACThread();
     }
@@ -1555,7 +1579,8 @@ nsresult nsProtocolProxyService::AsyncResolveInternal(
   bool usePACThread;
 
   // adapt to realtime changes in the system proxy service
-  if (mProxyConfig == PROXYCONFIG_SYSTEM) {
+  if (mProxyConfig == PROXYCONFIG_SYSTEM &&
+      !StaticPrefs::network_proxy_system_wpad()) {
     nsCOMPtr<nsISystemProxySettings> sp2 =
         do_GetService(NS_SYSTEMPROXYSETTINGS_CONTRACTID);
     if (sp2 != mSystemProxySettings) {
@@ -2190,7 +2215,8 @@ nsresult nsProtocolProxyService::Resolve_Internal(nsIChannel* channel,
   }
 
   // Proxy auto config magic...
-  if (mProxyConfig == PROXYCONFIG_PAC || mProxyConfig == PROXYCONFIG_WPAD) {
+  if (mProxyConfig == PROXYCONFIG_PAC || mProxyConfig == PROXYCONFIG_WPAD ||
+      StaticPrefs::network_proxy_system_wpad()) {
     // Do not query PAC now.
     *usePACThread = true;
     return NS_OK;
diff --git a/netwerk/base/nsProtocolProxyService.h b/netwerk/base/nsProtocolProxyService.h
index 394450ca6e..2c102a808e 100644
--- a/netwerk/base/nsProtocolProxyService.h
+++ b/netwerk/base/nsProtocolProxyService.h
@@ -320,9 +320,13 @@ class nsProtocolProxyService final : public nsIProtocolProxyService2,
   nsresult ResetPACThread();
   nsresult ReloadNetworkPAC();
 
-  nsresult AsyncConfigureFromPAC(bool aForceReload, bool aResetPACThread);
-  nsresult OnAsyncGetPACURI(bool aForceReload, bool aResetPACThread,
-                            nsresult aResult, const nsACString& aUri);
+  nsresult AsyncConfigureWPADOrFromPAC(bool aForceReload, bool aResetPACThread,
+                                       bool aSystemWPADAllowed);
+  nsresult OnAsyncGetPACURIOrSystemWPADSetting(bool aForceReload,
+                                               bool aResetPACThread,
+                                               nsresult aResult,
+                                               const nsACString& aUri,
+                                               bool aSystemWPADSetting);
 
  public:
   // The Sun Forte compiler and others implement older versions of the
diff --git a/netwerk/base/nsStandardURL.cpp b/netwerk/base/nsStandardURL.cpp
index de3578c439..d9b0c23ead 100644
--- a/netwerk/base/nsStandardURL.cpp
+++ b/netwerk/base/nsStandardURL.cpp
@@ -292,8 +292,8 @@ void nsStandardURL::SanityCheck() {
         (uint32_t)mExtension.mPos, (int32_t)mExtension.mLen,
         (uint32_t)mQuery.mPos, (int32_t)mQuery.mLen, (uint32_t)mRef.mPos,
         (int32_t)mRef.mLen);
-    CrashReporter::AnnotateCrashReport(CrashReporter::Annotation::URLSegments,
-                                       msg);
+    CrashReporter::RecordAnnotationNSCString(
+        CrashReporter::Annotation::URLSegments, msg);
 
     MOZ_CRASH("nsStandardURL::SanityCheck failed");
   }
diff --git a/netwerk/base/nsTransportUtils.cpp b/netwerk/base/nsTransportUtils.cpp
index df53ead198..242907da08 100644
--- a/netwerk/base/nsTransportUtils.cpp
+++ b/netwerk/base/nsTransportUtils.cpp
@@ -24,24 +24,21 @@ class nsTransportEventSinkProxy : public nsITransportEventSink {
   nsTransportEventSinkProxy(nsITransportEventSink* sink, nsIEventTarget* target)
       : mSink(sink),
         mTarget(target),
-        mLock("nsTransportEventSinkProxy.mLock"),
-        mLastEvent(nullptr) {
-    NS_ADDREF(mSink);
-  }
+        mLock("nsTransportEventSinkProxy.mLock") {}
 
  private:
   virtual ~nsTransportEventSinkProxy() {
     // our reference to mSink could be the last, so be sure to release
     // it on the target thread.  otherwise, we could get into trouble.
     NS_ProxyRelease("nsTransportEventSinkProxy::mSink", mTarget,
-                    dont_AddRef(mSink));
+                    mSink.forget());
   }
 
  public:
-  nsITransportEventSink* mSink;
+  nsCOMPtr<nsITransportEventSink> mSink;
   nsCOMPtr<nsIEventTarget> mTarget;
   Mutex mLock MOZ_UNANNOTATED;
-  nsTransportStatusEvent* mLastEvent;
+  RefPtr<nsTransportStatusEvent> mLastEvent;
 };
 
 class nsTransportStatusEvent : public Runnable {
@@ -69,11 +66,14 @@ class nsTransportStatusEvent : public Runnable {
     // if not coalescing all, then last event may not equal self!
     {
       MutexAutoLock lock(mProxy->mLock);
-      if (mProxy->mLastEvent == this) mProxy->mLastEvent = nullptr;
+      if (mProxy->mLastEvent == this) {
+        mProxy->mLastEvent = nullptr;
+      }
     }
 
     mProxy->mSink->OnTransportStatus(mTransport, mStatus, mProgress,
                                      mProgressMax);
+    mProxy = nullptr;
     return NS_OK;
   }
 
diff --git a/netwerk/base/nsURLHelper.cpp b/netwerk/base/nsURLHelper.cpp
index 3850c6865a..ca82b0cd00 100644
--- a/netwerk/base/nsURLHelper.cpp
+++ b/netwerk/base/nsURLHelper.cpp
@@ -1236,8 +1236,8 @@ void URLParams::DecodeString(const nsACString& aInput, nsAString& aOutput) {
 
 /* static */
 bool URLParams::ParseNextInternal(const char*& aStart, const char* const aEnd,
-                                  nsAString* aOutDecodedName,
-                                  nsAString* aOutDecodedValue) {
+                                  bool aShouldDecode, nsAString* aOutputName,
+                                  nsAString* aOutputValue) {
   nsDependentCSubstring string;
 
   const char* const iter = std::find(aStart, aEnd, '&');
@@ -1267,9 +1267,14 @@ bool URLParams::ParseNextInternal(const char*& aStart, const char* const aEnd,
     name.Rebind(string, 0);
   }
 
-  DecodeString(name, *aOutDecodedName);
-  DecodeString(value, *aOutDecodedValue);
+  if (aShouldDecode) {
+    DecodeString(name, *aOutputName);
+    DecodeString(value, *aOutputValue);
+    return true;
+  }
 
+  ConvertString(name, *aOutputName);
+  ConvertString(value, *aOutputValue);
   return true;
 }
 
@@ -1278,7 +1283,7 @@ bool URLParams::Extract(const nsACString& aInput, const nsAString& aName,
                         nsAString& aValue) {
   aValue.SetIsVoid(true);
   return !URLParams::Parse(
-      aInput, [&aName, &aValue](const nsAString& name, nsString&& value) {
+      aInput, true, [&aName, &aValue](const nsAString& name, nsString&& value) {
         if (aName == name) {
           aValue = std::move(value);
           return false;
@@ -1291,7 +1296,7 @@ void URLParams::ParseInput(const nsACString& aInput) {
   // Remove all the existing data before parsing a new input.
   DeleteAll();
 
-  URLParams::Parse(aInput, [this](nsString&& name, nsString&& value) {
+  URLParams::Parse(aInput, true, [this](nsString&& name, nsString&& value) {
     mParams.AppendElement(Param{std::move(name), std::move(value)});
     return true;
   });
diff --git a/netwerk/base/nsURLHelper.h b/netwerk/base/nsURLHelper.h
index f5ccc8bac6..36844e6e4b 100644
--- a/netwerk/base/nsURLHelper.h
+++ b/netwerk/base/nsURLHelper.h
@@ -257,19 +257,20 @@ class URLParams final {
    * true otherwise
    */
   template <typename ParamHandler>
-  static bool Parse(const nsACString& aInput, ParamHandler aParamHandler) {
+  static bool Parse(const nsACString& aInput, bool aShouldDecode,
+                    ParamHandler aParamHandler) {
     const char* start = aInput.BeginReading();
     const char* const end = aInput.EndReading();
 
     while (start != end) {
-      nsAutoString decodedName;
-      nsAutoString decodedValue;
+      nsAutoString name;
+      nsAutoString value;
 
-      if (!ParseNextInternal(start, end, &decodedName, &decodedValue)) {
+      if (!ParseNextInternal(start, end, aShouldDecode, &name, &value)) {
         continue;
       }
 
-      if (!aParamHandler(std::move(decodedName), std::move(decodedValue))) {
+      if (!aParamHandler(std::move(name), std::move(value))) {
         return false;
       }
     }
@@ -357,8 +358,8 @@ class URLParams final {
   static void DecodeString(const nsACString& aInput, nsAString& aOutput);
   static void ConvertString(const nsACString& aInput, nsAString& aOutput);
   static bool ParseNextInternal(const char*& aStart, const char* aEnd,
-                                nsAString* aOutDecodedName,
-                                nsAString* aOutDecodedValue);
+                                bool aShouldDecode, nsAString* aOutputName,
+                                nsAString* aOutputValue);
 
   struct Param {
     nsString mKey;