diff --git a/netwerk/base/nsSocketTransportService2.cpp b/netwerk/base/nsSocketTransportService2.cpp
index 4761ab697f2..0c2911450d9 100644
--- a/netwerk/base/nsSocketTransportService2.cpp
+++ b/netwerk/base/nsSocketTransportService2.cpp
@@ -4,17 +4,20 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsSocketTransportService2.h"
+#if !defined(MOZILLA_XPCOMRT_API)
 #include "nsSocketTransport2.h"
+#include "NetworkActivityMonitor.h"
+#include "mozilla/Preferences.h"
+#endif // !defined(MOZILLA_XPCOMRT_API)
+#include "nsASocketHandler.h"
 #include "nsError.h"
 #include "prnetdb.h"
 #include "prerror.h"
 #include "nsIPrefService.h"
 #include "nsIPrefBranch.h"
 #include "nsServiceManagerUtils.h"
-#include "NetworkActivityMonitor.h"
 #include "nsIObserverService.h"
 #include "mozilla/Services.h"
-#include "mozilla/Preferences.h"
 #include "mozilla/Likely.h"
 #include "mozilla/PublicSSL.h"
 #include "mozilla/ChaosMode.h"
@@ -560,7 +563,9 @@ nsSocketTransportService::Shutdown()
         obsSvc->RemoveObserver(this, "last-pb-context-exited");
     }
 
+#if !defined(MOZILLA_XPCOMRT_API)
     mozilla::net::NetworkActivityMonitor::Shutdown();
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     mInitialized = false;
     mShuttingDown = false;
@@ -634,6 +639,10 @@ nsSocketTransportService::CreateTransport(const char **types,
                                           nsIProxyInfo *proxyInfo,
                                           nsISocketTransport **result)
 {
+#if defined(MOZILLA_XPCOMRT_API)
+    NS_WARNING("nsSocketTransportService::CreateTransport not implemented");
+    return NS_ERROR_NOT_IMPLEMENTED;
+#else
     NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
     NS_ENSURE_TRUE(port >= 0 && port <= 0xFFFF, NS_ERROR_ILLEGAL_VALUE);
 
@@ -645,12 +654,17 @@ nsSocketTransportService::CreateTransport(const char **types,
 
     trans.forget(result);
     return NS_OK;
+#endif // defined(MOZILLA_XPCOMRT_API)
 }
 
 NS_IMETHODIMP
 nsSocketTransportService::CreateUnixDomainTransport(nsIFile *aPath,
                                                     nsISocketTransport **result)
 {
+#if defined(MOZILLA_XPCOMRT_API)
+    NS_WARNING("nsSocketTransportService::CreateUnixDomainTransport not implemented");
+    return NS_ERROR_NOT_IMPLEMENTED;
+#else
     nsresult rv;
 
     NS_ENSURE_TRUE(mInitialized, NS_ERROR_NOT_INITIALIZED);
@@ -668,6 +682,7 @@ nsSocketTransportService::CreateUnixDomainTransport(nsIFile *aPath,
 
     trans.forget(result);
     return NS_OK;
+#endif // defined(MOZILLA_XPCOMRT_API)
 }
 
 NS_IMETHODIMP
@@ -732,7 +747,9 @@ nsSocketTransportService::Run()
 
     SOCKET_LOG(("STS thread init\n"));
 
+#if !defined(MOZILLA_XPCOMRT_API)
     psm::InitializeSSLServerCertVerificationThreads();
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     gSocketThread = PR_GetCurrentThread();
 
@@ -901,7 +918,9 @@ nsSocketTransportService::Run()
 
     gSocketThread = nullptr;
 
+#if !defined(MOZILLA_XPCOMRT_API)
     psm::StopSSLServerCertVerificationThreads();
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     SOCKET_LOG(("STS thread exit\n"));
     return NS_OK;
@@ -1085,6 +1104,10 @@ nsSocketTransportService::DoPollIteration(bool wait, TimeDuration *pollDuration)
 nsresult
 nsSocketTransportService::UpdatePrefs()
 {
+#if defined(MOZILLA_XPCOMRT_API)
+    NS_WARNING("nsSocketTransportService::UpdatePrefs not implemented");
+    return NS_ERROR_NOT_IMPLEMENTED;
+#else
     mSendBufferSize = 0;
     
     nsCOMPtr<nsIPrefBranch> tmpPrefService = do_GetService(NS_PREFSERVICE_CONTRACTID);
@@ -1146,6 +1169,7 @@ nsSocketTransportService::UpdatePrefs()
     }
     
     return NS_OK;
+#endif // defined(MOZILLA_XPCOMRT_API)
 }
 
 void
@@ -1190,6 +1214,7 @@ nsSocketTransportService::Observe(nsISupports *subject,
                                   const char *topic,
                                   const char16_t *data)
 {
+#if !defined(MOZILLA_XPCOMRT_API)
     if (!strcmp(topic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
         UpdatePrefs();
         return NS_OK;
@@ -1203,6 +1228,7 @@ nsSocketTransportService::Observe(nsISupports *subject,
 
         return net::NetworkActivityMonitor::Init(blipInterval);
     }
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     if (!strcmp(topic, "last-pb-context-exited")) {
         nsCOMPtr<nsIRunnable> ev =
@@ -1236,7 +1262,9 @@ nsSocketTransportService::ClosePrivateConnections()
         }
     }
 
+#if !defined(MOZILLA_XPCOMRT_API)
     mozilla::ClearPrivateSSLState();
+#endif // !defined(MOZILLA_XPCOMRT_API)
 }
 
 NS_IMETHODIMP
diff --git a/netwerk/base/nsURLHelper.cpp b/netwerk/base/nsURLHelper.cpp
index ea88126b7f0..7692a26a5c6 100644
--- a/netwerk/base/nsURLHelper.cpp
+++ b/netwerk/base/nsURLHelper.cpp
@@ -53,8 +53,10 @@ InitGlobals()
     }
 
     gInitialized = true;
+#if !defined(MOZILLA_XPCOMRT_API)
     Preferences::AddIntVarCache(&gMaxLength,
                                 "network.standard-url.max-length", 1048576);
+#endif
 }
 
 void
@@ -107,6 +109,10 @@ net_GetStdURLParser()
 nsresult
 net_GetURLSpecFromDir(nsIFile *aFile, nsACString &result)
 {
+#if defined(MOZILLA_XPCOMRT_API)
+    NS_WARNING("net_GetURLSpecFromDir not implemented");
+    return NS_ERROR_NOT_IMPLEMENTED;
+#else
     nsAutoCString escPath;
     nsresult rv = net_GetURLSpecFromActualFile(aFile, escPath);
     if (NS_FAILED(rv))
@@ -118,11 +124,16 @@ net_GetURLSpecFromDir(nsIFile *aFile, nsACString &result)
     
     result = escPath;
     return NS_OK;
+#endif // defined(MOZILLA_XPCOMRT_API)
 }
 
 nsresult
 net_GetURLSpecFromFile(nsIFile *aFile, nsACString &result)
 {
+#if defined(MOZILLA_XPCOMRT_API)
+    NS_WARNING("net_GetURLSpecFromFile not implemented");
+    return NS_ERROR_NOT_IMPLEMENTED;
+#else
     nsAutoCString escPath;
     nsresult rv = net_GetURLSpecFromActualFile(aFile, escPath);
     if (NS_FAILED(rv))
@@ -142,6 +153,7 @@ net_GetURLSpecFromFile(nsIFile *aFile, nsACString &result)
     
     result = escPath;
     return NS_OK;
+#endif // defined(MOZILLA_XPCOMRT_API)
 }
 
 //----------------------------------------------------------------------------
diff --git a/netwerk/dns/nsDNSService2.cpp b/netwerk/dns/nsDNSService2.cpp
index 1990567b3d4..21a181206bc 100644
--- a/netwerk/dns/nsDNSService2.cpp
+++ b/netwerk/dns/nsDNSService2.cpp
@@ -36,7 +36,9 @@
 #include "mozilla/Attributes.h"
 #include "mozilla/VisualEventTracer.h"
 #include "mozilla/net/NeckoCommon.h"
+#if !defined(MOZILLA_XPCOMRT_API)
 #include "mozilla/net/ChildDNSService.h"
+#endif // !defined(MOZILLA_XPCOMRT_API)
 #include "mozilla/net/DNSListenerProxy.h"
 #include "mozilla/Services.h"
 
@@ -502,9 +504,11 @@ static nsDNSService *gDNSService;
 nsIDNSService*
 nsDNSService::GetXPCOMSingleton()
 {
+#if !defined(MOZILLA_XPCOMRT_API)
     if (IsNeckoChild()) {
         return ChildDNSService::GetSingleton();
     }
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     return GetSingleton();
 }
@@ -640,7 +644,9 @@ nsDNSService::Init()
         }
     }
 
+#if !defined(MOZILLA_XPCOMRT_API)
     RegisterWeakMemoryReporter(this);
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     return rv;
 }
@@ -648,7 +654,9 @@ nsDNSService::Init()
 NS_IMETHODIMP
 nsDNSService::Shutdown()
 {
+#if !defined(MOZILLA_XPCOMRT_API)
     UnregisterWeakMemoryReporter(this);
+#endif // !defined(MOZILLA_XPCOMRT_API)
 
     nsRefPtr<nsHostResolver> res;
     {
diff --git a/netwerk/moz.build b/netwerk/moz.build
index a5e732bcd47..3cf12a5a9d6 100644
--- a/netwerk/moz.build
+++ b/netwerk/moz.build
@@ -16,6 +16,7 @@ DIRS += [
     'protocol',
     'system',
     'ipc',
+    'standalone',
 ]
 
 if CONFIG['MOZ_SRTP']:
diff --git a/netwerk/standalone/moz.build b/netwerk/standalone/moz.build
new file mode 100644
index 00000000000..112a07ded90
--- /dev/null
+++ b/netwerk/standalone/moz.build
@@ -0,0 +1,53 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+if CONFIG['OS_TARGET'] != 'WINNT' and CONFIG['MOZ_WIDGET_TOOLKIT'] != 'gonk':
+    Library('necko_standalone')
+
+src_list = [
+    'nsNetModuleStandalone.cpp',
+]
+
+netwerk_base_src = [
+    'nsDNSPrefetch.cpp',
+    'nsNetAddr.cpp',
+    'nsSocketTransportService2.cpp',
+    'nsURLHelper.cpp',
+]
+src_list += [
+    '%s/netwerk/base/%s' % (TOPSRCDIR, s) for s in netwerk_base_src
+]
+
+netwerk_dns_src = [
+    'nsHostResolver.cpp',
+    'DNS.cpp',
+    'DNSListenerProxy.cpp',
+    'GetAddrInfo.cpp',
+    'nameprep.c',
+    'nsDNSService2.cpp',
+    'nsIDNService.cpp',
+    'punycode.c',
+    'race.c',
+]
+src_list += [
+    '%s/netwerk/dns/%s' % (TOPSRCDIR, s) for s in netwerk_dns_src
+]
+
+SOURCES += sorted(src_list)
+
+FAIL_ON_WARNINGS = True
+
+LOCAL_INCLUDES = [
+    '../base',
+    '../build',
+    '../dns',
+]
+
+DEFINES['MOZILLA_INTERNAL_API'] = True
+DEFINES['MOZILLA_XPCOMRT_API'] = True
+DEFINES['MOZILLA_EXTERNAL_LINKAGE'] = True
+
+include('/ipc/chromium/chromium-config.mozbuild')
diff --git a/netwerk/standalone/nsNetModuleStandalone.cpp b/netwerk/standalone/nsNetModuleStandalone.cpp
new file mode 100644
index 00000000000..82dfe61840d
--- /dev/null
+++ b/netwerk/standalone/nsNetModuleStandalone.cpp
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set sw=4 ts=8 et 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 "necko-config.h"
+
+#include "mozilla/ModuleUtils.h"
+#include "mozilla/DebugOnly.h"
+#include "nsCOMPtr.h"
+#include "nsICategoryManager.h"
+#include "nsIClassInfoImpl.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsNetCID.h"
+#include "nsPIDNSService.h"
+#include "nsPISocketTransportService.h"
+#include "nscore.h"
+
+extern const mozilla::Module kNeckoStandaloneModule;
+
+namespace mozilla {
+
+nsresult
+InitNetModuleStandalone()
+{
+  nsresult rv;
+
+  nsCOMPtr<nsPIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv)) {
+    mozilla::DebugOnly<nsresult> rv = dns->Init();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "DNS service init failed");
+  } else {
+    NS_WARNING("failed to get dns service");
+  }
+
+  nsCOMPtr<nsPISocketTransportService> sts = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv)) {
+    mozilla::DebugOnly<nsresult> rv = sts->Init();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "Socket transport service init failed");
+  } else {
+    NS_WARNING("failed to get socket transport service");
+  }
+
+  return NS_OK;
+}
+
+nsresult
+ShutdownNetModuleStandalone()
+{
+  nsresult rv;
+
+  nsCOMPtr<nsPIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv)) {
+    mozilla::DebugOnly<nsresult> rv = dns->Shutdown();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "DNS service shutdown failed");
+  } else {
+    NS_WARNING("failed to get dns service");
+  }
+
+  nsCOMPtr<nsPISocketTransportService> sts = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv)) {
+    mozilla::DebugOnly<nsresult> rv = sts->Shutdown();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "Socket transport service shutdown failed");
+  } else {
+    NS_WARNING("failed to get socket transport service");
+  }
+
+  return NS_OK;
+}
+
+} // namespace mozilla
+
+#include "nsDNSService2.h"
+NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(nsIDNSService,
+  nsDNSService::GetXPCOMSingleton)
+
+#include "nsSocketTransportService2.h"
+#undef LOG
+#undef LOG_ENABLED
+NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsSocketTransportService, Init)
+
+// Net module startup hook
+static nsresult nsNetStartup()
+{
+    return NS_OK;
+}
+
+// Net module shutdown hook
+static void nsNetShutdown()
+{
+}
+
+NS_DEFINE_NAMED_CID(NS_SOCKETTRANSPORTSERVICE_CID);
+NS_DEFINE_NAMED_CID(NS_DNSSERVICE_CID);
+
+static const mozilla::Module::CIDEntry kNeckoCIDs[] = {
+    { &kNS_SOCKETTRANSPORTSERVICE_CID, false, nullptr, nsSocketTransportServiceConstructor },
+    { &kNS_DNSSERVICE_CID, false, nullptr, nsIDNSServiceConstructor },
+    { nullptr }
+};
+
+static const mozilla::Module::ContractIDEntry kNeckoContracts[] = {
+    { NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &kNS_SOCKETTRANSPORTSERVICE_CID },
+    { NS_DNSSERVICE_CONTRACTID, &kNS_DNSSERVICE_CID },
+    { nullptr }
+};
+
+const mozilla::Module kNeckoStandaloneModule = {
+    mozilla::Module::kVersion,
+    kNeckoCIDs,
+    kNeckoContracts,
+    nullptr,
+    nullptr,
+    nsNetStartup,
+    nsNetShutdown
+};
diff --git a/netwerk/standalone/nsNetModuleStandalone.h b/netwerk/standalone/nsNetModuleStandalone.h
new file mode 100644
index 00000000000..6e59cef4eae
--- /dev/null
+++ b/netwerk/standalone/nsNetModuleStandalone.h
@@ -0,0 +1,13 @@
+#ifndef ns_net_module_standalone_h_
+#define ns_net_module_standalone_h_
+
+#include <nsError.h>
+
+namespace mozilla {
+
+nsresult InitNetModuleStandalone();
+nsresult ShutdownNetModuleStandalone();
+
+}
+
+#endif //  ns_net_module_standalone_h_
diff --git a/xpcom/components/nsComponentManager.cpp b/xpcom/components/nsComponentManager.cpp
index 0589a1b7e6f..558aedb4747 100644
--- a/xpcom/components/nsComponentManager.cpp
+++ b/xpcom/components/nsComponentManager.cpp
@@ -396,6 +396,7 @@ nsComponentManagerImpl::Init()
 
 #if defined(MOZILLA_XPCOMRT_API)
   RegisterModule(&kXPCOMRTModule, nullptr);
+  RegisterModule(&kNeckoStandaloneModule, nullptr);
 #else
   RegisterModule(&kXPCOMModule, nullptr);
 #endif // defined(MOZILLA_XPCOMRT_API)
diff --git a/xpcom/components/nsComponentManager.h b/xpcom/components/nsComponentManager.h
index 35d3d26b043..55ae55751db 100644
--- a/xpcom/components/nsComponentManager.h
+++ b/xpcom/components/nsComponentManager.h
@@ -69,6 +69,7 @@ extern const char staticComponentType[];
 
 #if defined(MOZILLA_XPCOMRT_API)
 extern const mozilla::Module kXPCOMRTModule;
+extern const mozilla::Module kNeckoStandaloneModule;
 #else
 extern const mozilla::Module kXPCOMModule;
 #endif
diff --git a/xpcom/libxpcomrt/XPCOMRTInit.cpp b/xpcom/libxpcomrt/XPCOMRTInit.cpp
index 5bdb8bb8052..53c15634e20 100644
--- a/xpcom/libxpcomrt/XPCOMRTInit.cpp
+++ b/xpcom/libxpcomrt/XPCOMRTInit.cpp
@@ -13,6 +13,8 @@
 #include "nsDebugImpl.h"
 #include "nsIErrorService.h"
 #include "nsMemoryImpl.h"
+#include "nsNetCID.h"
+#include "nsNetModuleStandalone.h"
 #include "nsObserverService.h"
 #include "nsThreadManager.h"
 #include "nsThreadPool.h"
@@ -98,6 +100,8 @@ NS_InitXPCOMRT()
     return rv;
   }
 
+  mozilla::InitNetModuleStandalone();
+
   return NS_OK;
 }
 
@@ -152,6 +156,11 @@ NS_ShutdownXPCOMRT()
 
     NS_ProcessPendingEvents(thread);
 
+    // Net module needs to be shutdown before the thread manager or else
+    // the thread manager will hang waiting for the socket transport
+    // service to shutdown.
+    mozilla::ShutdownNetModuleStandalone();
+
     // Shutdown all remaining threads.  This method does not return until
     // all threads created using the thread manager (with the exception of
     // the main thread) have exited.
diff --git a/xpcom/libxpcomrt/moz.build b/xpcom/libxpcomrt/moz.build
index 2ad8dfea607..48c784727ed 100644
--- a/xpcom/libxpcomrt/moz.build
+++ b/xpcom/libxpcomrt/moz.build
@@ -141,6 +141,7 @@ LOCAL_INCLUDES = [
     '../ds',
     '../glue',
     '../threads',
+    '/netwerk/standalone/',
     '/xpcom/reflect/xptinfo/',
 ]