fix: middleware was not workingg

package.json

@@ -7,16 +7,16 @@
     "type": "git",
     "url": "https://github.com/open-rpc/server-js.git"
   },
-  "main": "./build/index.js",
+  "main": "./build/src/index.js",
   "bin": {
-    "open-rpc-server-js": "./build/cli.js"
+    "open-rpc-server-js": "./build/src/cli.js"
   },
   "files": [
     "build",
     ".node-version"
   ],
   "scripts": {
-    "start": "./build/cli.js",
+    "start": "./build/src/cli.js",
     "test": "jest --coverage",
     "build": "tsc",
     "watch:build": "tsc --watch",

src/server.ts

@@ -2,6 +2,13 @@ import { Router, IMethodMapping } from "./router";
 import { OpenRPC } from "@open-rpc/meta-schema";
 import Transports, { TTransportOptions, TTransportClasses, TTransportNames } from "./transports";
 
+import cors from "cors";
+import { json as jsonParser } from "body-parser";
+import { HandleFunction } from "connect";
+import { THTTPServerTransportOptions } from "./transports/http";
+import { THTTPSServerTransportOptions } from "./transports/https";
+import { TWebSocketServerTransportOptions } from "./transports/websocket";
+
 interface ITransportConfig {
   type: TTransportNames;
   options: TTransportOptions;
@@ -23,7 +30,24 @@ export default class Server {
 
   constructor(private options: IServerOptions) {
     this.addRouter(options.openrpcDocument, options.methodMapping as IMethodMapping);
-    options.transportConfigs.forEach((transportConfig) => {
+
+    const defaultCorsOptions = { origin: "*" } as cors.CorsOptions;
+    const transportConfigs = options.transportConfigs.map((transportConfig) => {
+      if (["HTTPTransport", "HTTPSTransport", "WebSocketTransport"].includes(transportConfig.type)) {
+        const transportOptions = transportConfig.options as THTTPServerTransportOptions |
+          THTTPSServerTransportOptions |
+          TWebSocketServerTransportOptions;
+
+        transportOptions.middleware = [
+          cors(defaultCorsOptions) as HandleFunction,
+          jsonParser(),
+          ...transportOptions.middleware,
+        ];
+      }
+      return transportConfig;
+    });
+
+    transportConfigs.forEach((transportConfig) => {
       this.addTransport(transportConfig.type, transportConfig.options);
     });
   }

src/transports/http.ts

@@ -28,6 +28,7 @@ export default class HTTPServerTransport extends ServerTransport {
   }
 
   private async httpRouterHandler(req: any, res: any) {
+    console.log(req, res.body); //tslint:disable-line
     const result = await this.routerHandler(req.body.id, req.body.method, req.body.params);
     res.setHeader("Content-Type", "application/json");
     res.end(JSON.stringify(result));