use espMqttClient, qos2 fixed

lib/espMqttClient/src/Transport/ClientAsync.cpp

@@ -0,0 +1,58 @@
+/*
+Copyright (c) 2022 Bert Melis. All rights reserved.
+
+This work is licensed under the terms of the MIT license.  
+For a copy, see <https://opensource.org/licenses/MIT> or
+the LICENSE file.
+*/
+
+#if defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_ESP32)
+
+#include "ClientAsync.h"
+
+namespace espMqttClientInternals {
+
+ClientAsync::ClientAsync()
+: client()
+, availableData(0)
+, bufData(nullptr) {
+  // empty
+}
+
+bool ClientAsync::connect(IPAddress ip, uint16_t port) {
+  return client.connect(ip, port);
+}
+
+bool ClientAsync::connect(const char* host, uint16_t port) {
+  return client.connect(host, port);
+}
+
+size_t ClientAsync::write(const uint8_t* buf, size_t size) {
+  return client.write(reinterpret_cast<const char*>(buf), size);
+}
+
+int ClientAsync::read(uint8_t* buf, size_t size) {
+  size_t willRead = std::min(size, availableData);
+  memcpy(buf, bufData, std::min(size, availableData));
+  if (availableData > size) {
+    emc_log_w("Buffer is smaller than available data: %zu - %zu", size, availableData);
+  }
+  availableData = 0;
+  return willRead;
+}
+
+void ClientAsync::stop() {
+  client.close(false);
+}
+
+bool ClientAsync::connected() {
+  return client.connected();
+}
+
+bool ClientAsync::disconnected() {
+  return client.disconnected();
+}
+
+}  // namespace espMqttClientInternals
+
+#endif