Update outdated examples (#1116)

Since v18.0.0 req is no longer passed to the "open" handler. You can access it in the "upgrade" handler instead.

README.md

@@ -41,7 +41,7 @@ uWS::SSLApp({
 }).ws<UserData>("/*", {
 
     /* Just a few of the available handlers */
-    .open = [](auto *ws, auto *req) {
+    .open = [](auto *ws) {
         /* MQTT syntax */
         ws->subscribe("sensors/+/house");
     },

misc/READMORE.md

@@ -119,8 +119,12 @@ uWS::App().ws<PerSocketData>("/*", {
     .maxPayloadLength = 16 * 1024,
     .idleTimeout = 10,
     /* Handlers */
-    .open = [](auto *ws, auto *req) {
+    .upgrade = [](auto *res, auto *req, auto *context) {
-        /* Here you can use req just like as for Http */
+        /* You may read from req only here, and COPY whatever you need into your PerSocketData.
+         * See UpgradeSync and UpgradeAsync examples. */
+    },
+    .open = [](auto *ws) {
+
     },
     .message = [](auto *ws, std::string_view message, uWS::OpCode opCode) {
         ws->send(message, opCode);

misc/main.cpp

@@ -37,7 +37,7 @@ int main(int argc, char **argv) {
         .maxPayloadLength = 16 * 1024 * 1024,
         .idleTimeout = 10,
         /* Handlers */
-        .open = [](auto *ws, auto *req) {
+        .open = [](auto *ws) {
             std::cout << "WebSocket connected" << std::endl;
             /* Access per socket data */
             PerSocketData *perSocketData = (PerSocketData *) ws->getUserData();