diff --git a/netwerk/protocol/http/HttpChannelChild.cpp b/netwerk/protocol/http/HttpChannelChild.cpp
index 4df4d51f61a..65c4043d3f8 100644
--- a/netwerk/protocol/http/HttpChannelChild.cpp
+++ b/netwerk/protocol/http/HttpChannelChild.cpp
@@ -287,10 +287,18 @@ HttpChannelChild::OnStartRequest(const nsHttpResponseHead& responseHead,
                          getter_AddRefs(mSecurityInfo));
   }
 
+  // Sanity check: we should have either both remove/local socket address or
+  // neither.
+  if (selfAddr.raw.family != peerAddr.raw.family) {
+    NS_WARNING("Child: socket has multiple address families!");
+  }
+
   mIsFromCache = isFromCache;
   mCacheEntryAvailable = cacheEntryAvailable;
   mCacheExpirationTime = cacheExpirationTime;
   mCachedCharset = cachedCharset;
+  mSelfAddr = selfAddr;
+  mPeerAddr = peerAddr;
 
   AutoEventEnqueuer ensureSerialDispatch(mEventQ);
 
@@ -313,9 +321,6 @@ HttpChannelChild::OnStartRequest(const nsHttpResponseHead& responseHead,
   rv = ApplyContentConversions();
   if (NS_FAILED(rv))
     Cancel(rv);
-
-  mSelfAddr = selfAddr;
-  mPeerAddr = peerAddr;
 }
 
 class TransportAndDataEvent : public ChannelEvent
@@ -1113,36 +1118,6 @@ HttpChannelChild::SetupFallbackChannel(const char *aFallbackKey)
   DROP_DEAD();
 }
 
-// The next four _should_ be implemented, but we need to figure out how
-// to transfer the data from the chrome process first.
-
-NS_IMETHODIMP
-HttpChannelChild::GetRemoteAddress(nsACString & _result)
-{
-  return NS_ERROR_NOT_AVAILABLE;
-}
-
-NS_IMETHODIMP
-HttpChannelChild::GetRemotePort(PRInt32 * _result)
-{
-  NS_ENSURE_ARG_POINTER(_result);
-  return NS_ERROR_NOT_AVAILABLE;
-}
-
-NS_IMETHODIMP
-HttpChannelChild::GetLocalAddress(nsACString & _result)
-{
-  return NS_ERROR_NOT_AVAILABLE;
-}
-
-NS_IMETHODIMP
-HttpChannelChild::GetLocalPort(PRInt32 * _result)
-{
-  NS_ENSURE_ARG_POINTER(_result);
-  return NS_ERROR_NOT_AVAILABLE;
-}
-
-
 //-----------------------------------------------------------------------------
 // HttpChannelChild::nsICacheInfoChannel
 //-----------------------------------------------------------------------------
diff --git a/netwerk/protocol/http/HttpChannelChild.h b/netwerk/protocol/http/HttpChannelChild.h
index 43617ef5589..f9f7c2e0003 100644
--- a/netwerk/protocol/http/HttpChannelChild.h
+++ b/netwerk/protocol/http/HttpChannelChild.h
@@ -106,10 +106,6 @@ public:
                               bool aMerge);
   // nsIHttpChannelInternal
   NS_IMETHOD SetupFallbackChannel(const char *aFallbackKey);
-  NS_IMETHOD GetLocalAddress(nsACString& addr);
-  NS_IMETHOD GetLocalPort(PRInt32* port);
-  NS_IMETHOD GetRemoteAddress(nsACString& addr);
-  NS_IMETHOD GetRemotePort(PRInt32* port);
   // nsISupportsPriority
   NS_IMETHOD SetPriority(PRInt32 value);
   // nsIResumableChannel
diff --git a/netwerk/protocol/http/HttpChannelParent.cpp b/netwerk/protocol/http/HttpChannelParent.cpp
index ee901cce07f..c91d2dc6220 100644
--- a/netwerk/protocol/http/HttpChannelParent.cpp
+++ b/netwerk/protocol/http/HttpChannelParent.cpp
@@ -450,6 +450,15 @@ HttpChannelParent::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)
   }
 
   nsHttpChannel *httpChan = static_cast<nsHttpChannel *>(mChannel.get());
+
+  // Sanity check: we should have either both remove/local socket address or
+  // neither.
+  PRNetAddr selfAddr = httpChan->GetSelfAddr();
+  PRNetAddr peerAddr = httpChan->GetPeerAddr();
+  if (selfAddr.raw.family != peerAddr.raw.family) {
+    NS_WARNING("Parent: socket has multiple address families!");
+  }
+
   if (mIPCClosed || 
       !SendOnStartRequest(responseHead ? *responseHead : nsHttpResponseHead(), 
                           !!responseHead,
diff --git a/netwerk/test/unit/test_traceable_channel.js b/netwerk/test/unit/test_traceable_channel.js
index a62b8a2c92b..164d65f4c46 100644
--- a/netwerk/test/unit/test_traceable_channel.js
+++ b/netwerk/test/unit/test_traceable_channel.js
@@ -22,14 +22,42 @@ TracingListener.prototype = {
 
     request.QueryInterface(Components.interfaces.nsIHttpChannelInternal);
 
-// local/remote addresses broken in e10s: disable for now
-/*
-    do_check_eq(request.localAddress, "127.0.0.1");
-    do_check_eq(request.localPort > 0, true);
-    do_check_neq(request.localPort, 4444);
-    do_check_eq(request.remoteAddress, "127.0.0.1");
-    do_check_eq(request.remotePort, 4444);
-*/
+    var localAddr = "unknown";
+    var localPort = "unknown";
+    var remoteAddr = "unknown";
+    var remotePort = "unknown";
+    try {
+      localAddr = request.localAddress;
+      dump("got local address\n");
+    } catch(e) {
+      dump("couldn't get local address\n");
+    }
+    try {
+      localPort = request.localPort;
+      dump("got local port\n");
+    } catch(e) {
+      dump("couldn't get local port\n");
+    }
+    try {
+      remoteAddr = request.remoteAddress;
+      dump("got remote address\n");
+    } catch(e) {
+      dump("couldn't get remote address\n");
+    }
+    try {
+      remotePort = request.remotePort;
+      dump("got remote port\n");
+    } catch(e) {
+      dump("couldn't get remote port\n");
+    }
+
+    do_check_eq(localAddr, "127.0.0.1");
+    do_check_eq(localPort > 0, true);
+    do_check_eq(remoteAddr, "127.0.0.1");
+    do_check_eq(remotePort, 4444);
+
+    request.QueryInterface(Components.interfaces.nsISupportsPriority);
+    request.priority = Ci.nsISupportsPriority.PRIORITY_LOW;
 
     // Make sure listener can't be replaced after OnStartRequest was called.
     request.QueryInterface(Components.interfaces.nsITraceableChannel);
@@ -63,9 +91,10 @@ TracingListener.prototype = {
       input.close();
     } catch (e) {
       dump("TracingListener.onStopRequest swallowing exception: " + e + "\n");
-    } finally {
-      httpserver.stop(do_test_finished);
     }
+
+    // we're the last OnStopRequest called by the nsIStreamListenerTee
+    run_next_test();
   },
 
   QueryInterface: function(iid) {
@@ -135,18 +164,37 @@ function make_channel(url) {
 
 // Check if received body is correctly modified.
 function channel_finished(request, input, ctx) {
-  httpserver.stop(do_test_finished);
+  // No-op: since the nsIStreamListenerTee calls the observer's OnStopRequest
+  // after this, we call run_next_test() there
+}
+
+// needs to be global or it'll go out of scope before it observes request
+var observer = new HttpResponseExaminer();
+
+var testRuns = 1;  // change this to >1 to run test multiple times 
+var iteration = 1;
+
+function run_next_test() {
+  if (iteration > testRuns) {
+    dump("Shutting down\n");
+    httpserver.stop(do_test_finished);
+    return;
+  }
+  if (iteration > 1) {
+    dump("^^^ test iteration=" + iteration + "\n");
+  }
+  var channel = make_channel("http://localhost:4444/testdir");
+  channel.asyncOpen(new ChannelListener(channel_finished), null);
+  iteration++;
 }
 
 function run_test() {
-  var observer = new HttpResponseExaminer();
   observer.register();
 
   httpserver = new nsHttpServer();
   httpserver.registerPathHandler("/testdir", test_handler);
   httpserver.start(4444);
 
-  var channel = make_channel("http://localhost:4444/testdir");
-  channel.asyncOpen(new ChannelListener(channel_finished), null);
+  run_next_test();
   do_test_pending();
 }