Support node older than v0.11.6

messege.rawHeaders was added in v0.11.6

Author: pachirel

Diff for: lib/http-proxy/passes/web-outgoing.js

@@ -87,16 +87,30 @@ module.exports = { // <--
     if (typeof rewriteCookieDomainConfig === 'string') { //also test for ''
       rewriteCookieDomainConfig = { '*': rewriteCookieDomainConfig };
     }
-    for (var i = 0; i < proxyRes.rawHeaders.length; i += 2) {
-      var key = proxyRes.rawHeaders[i];
-      var header = proxyRes.rawHeaders[i + 1];
-      if (header != undefined) {
-        if (rewriteCookieDomainConfig && key.toLowerCase() === 'set-cookie') {
-          header = common.rewriteCookieDomain(header, rewriteCookieDomainConfig);
+    // message.rawHeaders is added in: v0.11.6
+    // https://nodejs.org/api/http.html#http_message_rawheaders
+    if (proxyRes.rawHeaders != undefined) {
+      for (var i = 0; i < proxyRes.rawHeaders.length; i += 2) {
+        var key = proxyRes.rawHeaders[i];
+        var header = proxyRes.rawHeaders[i + 1];
+        if (header != undefined) {
+          if (rewriteCookieDomainConfig && key.toLowerCase() === 'set-cookie') {
+            header = common.rewriteCookieDomain(header, rewriteCookieDomainConfig);
+          }
+          res.setHeader(String(key).trim(), header);
         }
-        res.setHeader(String(key).trim(), header);
-      }
-    };
+      };
+    } else {
+      Object.keys(proxyRes.headers).forEach(function(key) {
+        var header = proxyRes.headers[key];
+        if (header != undefined) {
+          if (rewriteCookieDomainConfig && key.toLowerCase() === 'set-cookie') {
+            header = common.rewriteCookieDomain(header, rewriteCookieDomainConfig);
+          }
+          res.setHeader(String(key).trim(), header);
+        }
+      });
+    }
   },
 
   /**

Diff for: test/lib-http-proxy-test.js

@@ -149,8 +149,10 @@ describe('lib/http-proxy.js', function() {
       }, function(res) {
         expect(res.statusCode).to.eql(200);
         expect(res.headers['content-type']).to.eql('text/plain');
-        expect(res.rawHeaders.indexOf('Content-Type')).not.to.eql(-1);
-        expect(res.rawHeaders.indexOf('text/plain')).not.to.eql(-1);
+        if (res.rawHeaders != undefined) {
+          expect(res.rawHeaders.indexOf('Content-Type')).not.to.eql(-1);
+          expect(res.rawHeaders.indexOf('text/plain')).not.to.eql(-1);
+        }
 
         res.on('data', function (data) {
           expect(data.toString()).to.eql('Hello from ' + ports.source);