Never compress 0 bytes, finish pub/sub ded. compr.

examples/BroadcastingEchoServer.cpp

@@ -11,7 +11,7 @@ int main() {
     /* Very simple WebSocket broadcasting echo server */
     uWS::App().ws<PerSocketData>("/*", {
         /* Settings */
-        .compression = uWS::SHARED_COMPRESSOR,
+        .compression = uWS::DEDICATED_COMPRESSOR_3KB,
         .maxPayloadLength = 16 * 1024 * 1024,
         .idleTimeout = 10,
         .maxBackpressure = 1 * 1024 * 1024,

examples/EchoServer.cpp

@@ -28,7 +28,7 @@ int main() {
             /* Open event here, you may access ws->getUserData() which points to a PerSocketData struct */
         },
         .message = [](auto *ws, std::string_view message, uWS::OpCode opCode) {
-            ws->send(message, opCode);
+            ws->send(message, opCode, true);
         },
         .drain = [](auto *ws) {
             /* Check ws->getBufferedAmount() here */