feat(proxy): Allow user-specified proxy request headers fixes #430

Author: Shane Osbourne

lib/cli/cli-options.js

@@ -129,6 +129,7 @@ opts.callbacks = {
             mw     = value.get("middleware");
         } else {
             target = value;
+            value = Immutable.Map({});
         }
 
         if (!target.match(/^(https?):\/\//)) {
@@ -150,7 +151,7 @@ opts.callbacks = {
             out.middleware = mw;
         }
 
-        return Immutable.fromJS(out);
+        return value.mergeDeep(out);
     },
     /**
      * @param value

lib/server/proxy-server.js

@@ -22,19 +22,9 @@ module.exports = function createProxyServer (bs, scripts) {
         }
     });
 
-    var pluginMw = bs.pluginManager.hook("server:middleware", snippetUtils.getProxyMiddleware(scripts, options.getIn(["scriptPaths", "versioned"])));
+    var opts = getOptions(bs, scripts);
 
-    var snippetOptions = options.get("snippetOptions").toJS();
-    var foxyServer = foxy(options.getIn(["proxy", "target"]), {
-            rules:       snippetUtils.getRegex(options.get("snippet"), options.get("snippetOptions")),
-            whitelist:   snippetOptions.whitelist,
-            blacklist:   snippetOptions.blacklist,
-            middleware:  bs.options.get("middleware").push(pluginMw),
-            errHandler:  function (err) {
-                bs.logger.debug("{red:[proxy error]} %s", err.message);
-            }
-        }
-    );
+    var foxyServer = foxy(options.getIn(["proxy", "target"]), opts);
 
     return {
         server: (function (app) {
@@ -46,6 +36,43 @@ module.exports = function createProxyServer (bs, scripts) {
     };
 };
 
+/**
+ * @param bs
+ * @param scripts
+ */
+function getOptions (bs, scripts) {
+
+    var options  = bs.options;
+
+    var snippetOptions = options.get("snippetOptions").toJS();
+
+    var out = {
+        rules:       snippetUtils.getRegex(options.get("snippet"), options.get("snippetOptions")),
+        whitelist:   snippetOptions.whitelist,
+        blacklist:   snippetOptions.blacklist,
+        middleware:  options.get("middleware").push(getPluginMiddleware(bs, scripts)),
+        errHandler:  function (err) {
+            bs.logger.debug("{red:[proxy error]} %s", err.message);
+        }
+    };
+
+    if (options.getIn(["proxy", "reqHeaders"])) {
+        out.reqHeaders = options.getIn(["proxy", "reqHeaders"]);
+    }
+
+    return out;
+}
+
+/**
+ * Get proxy specific middleware
+ * @param bs
+ * @param scripts
+ * @returns {*}
+ */
+function getPluginMiddleware (bs, scripts) {
+    return bs.pluginManager.hook("server:middleware", snippetUtils.getProxyMiddleware(scripts, bs.options.getIn(["scriptPaths", "versioned"])));
+}
+
 /**
  * @param {Object} opts
  * @param {Function} cb