Return OPTIONS when requested for toradio

src/meshwifi/meshhttp.cpp

@@ -207,6 +207,7 @@ void initWebServer()
     // For every resource available on the server, we need to create a ResourceNode
     // The ResourceNode links URL and HTTP method to a handler function
 
+    ResourceNode *nodeAPIv1ToRadioOptions = new ResourceNode("/api/v1/toradio", "OPTIONS", &handleAPIv1ToRadio);
     ResourceNode *nodeAPIv1ToRadio = new ResourceNode("/api/v1/toradio", "PUT", &handleAPIv1ToRadio);
     ResourceNode *nodeAPIv1FromRadio = new ResourceNode("/api/v1/fromradio", "GET", &handleAPIv1FromRadio);
     ResourceNode *nodeCSS = new ResourceNode("/css/style.css", "GET", &handleStyleCSS);
@@ -217,6 +218,7 @@ void initWebServer()
     ResourceNode *node404 = new ResourceNode("", "GET", &handle404);
 
     // Secure nodes
+    secureServer->registerNode(nodeAPIv1ToRadioOptions);
     secureServer->registerNode(nodeAPIv1ToRadio);
     secureServer->registerNode(nodeAPIv1FromRadio);
     secureServer->registerNode(nodeCSS);
@@ -229,6 +231,7 @@ void initWebServer()
     secureServer->addMiddleware(&middlewareSpeedUp240);
 
     // Insecure nodes
+    insecureServer->registerNode(nodeAPIv1ToRadioOptions);
     insecureServer->registerNode(nodeAPIv1ToRadio);
     insecureServer->registerNode(nodeAPIv1FromRadio);
     insecureServer->registerNode(nodeCSS);
@@ -378,7 +381,14 @@ void handleAPIv1ToRadio(HTTPRequest *req, HTTPResponse *res)
     // Status code is 200 OK by default.
     res->setHeader("Content-Type", "application/x-protobuf");
     res->setHeader("Access-Control-Allow-Origin", "*");
-    res->setHeader("Access-Control-Allow-Methods", "PUT, GET");
+    res->setHeader("Access-Control-Allow-Methods", "PUT, OPTIONS");
+
+    if (req->getMethod() == "OPTIONS") {
+        res->setStatusCode(204);
+        res->print("");
+        return;
+    }
+
 
     byte buffer[MAX_TO_FROM_RADIO_SIZE];
     size_t s = req->readBytes(buffer, MAX_TO_FROM_RADIO_SIZE);