Network.responseReceivedExtraInfo may be fired before or after respon…

…seReceived (#120)

* Network.responseReceivedExtraInfo may be fired before or after responseReceived

From https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-responseReceivedExtraInfo

    responseReceivedExtraInfo may be fired before or after responseReceived.

index.js

@@ -67,6 +67,7 @@ module.exports = {
       entriesWithoutPage = [],
       responsesWithoutPage = [],
       paramsWithoutPage = [],
+      responseReceivedExtraInfos = [],
       currentPageId;
 
     for (const message of messages) {
@@ -336,11 +337,7 @@ module.exports = {
             }
 
             if (!entry) {
-              debug(
-                `Received response extra info for requestId ${
-                  params.requestId
-                } with no matching request.`
-              );
+              responseReceivedExtraInfos.push(params);
               continue;
             }
 
@@ -350,13 +347,12 @@ module.exports = {
                 headers: parseHeaders(params.headers),
                 blockedCookies: params.blockedCookies
               };
+              responseReceivedExtraInfos.push(params);
               continue;
             }
 
             if (params.headers) {
-              entry.response.headers = entry.response.headers.concat(
-                parseHeaders(params.headers)
-              );
+              entry.response.headers = parseHeaders(params.headers);
             }
           }
           break;
@@ -418,6 +414,19 @@ module.exports = {
               );
               throw e;
             }
+
+            const responseReceivedExtraInfo = responseReceivedExtraInfos.find(
+              responseReceivedExtraInfo =>
+                responseReceivedExtraInfo.requestId == params.requestId
+            );
+            if (
+              responseReceivedExtraInfo &&
+              responseReceivedExtraInfo.headers
+            ) {
+              entry.response.headers = parseHeaders(
+                responseReceivedExtraInfo.headers
+              );
+            }
           }
           break;