use espMqttClient, qos2 fixed

lib/espMqttClient/src/Transport/ClientPosix.cpp

@@ -0,0 +1,92 @@
+/*
+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.
+*/
+
+#include "ClientPosix.h"
+
+#if defined(__linux__)
+
+namespace espMqttClientInternals {
+
+ClientPosix::ClientPosix()
+: _sockfd(-1)
+, _host() {
+  // empty
+}
+
+ClientPosix::~ClientPosix() {
+  ClientPosix::stop();
+}
+
+bool ClientPosix::connect(IPAddress ip, uint16_t port) {
+  if (connected()) stop();
+
+  _sockfd = ::socket(AF_INET, SOCK_STREAM, 0);
+  if (_sockfd < 0) {
+    emc_log_e("Error %d opening socket", errno);
+  }
+
+  int flag = 1;
+  if (setsockopt(_sockfd, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(int)) < 0) {
+    emc_log_e("Error %d disabling nagle", errno);
+  }
+
+  memset(&_host, 0, sizeof(_host));
+  _host.sin_family = AF_INET;
+  _host.sin_addr.s_addr = htonl(uint32_t(ip));
+  _host.sin_port = ::htons(port);
+
+  int ret = ::connect(_sockfd, (struct sockaddr *)&_host, sizeof(_host));
+
+  if (ret < 0) {
+    emc_log_e("Error connecting: %d - (%d) %s", ret, errno, strerror(errno));
+    return false;
+  }
+
+  emc_log_i("Connected");
+  return true;
+}
+
+bool ClientPosix::connect(const char* host, uint16_t port) {
+  // tbi
+  (void) host;
+  (void) port;
+  return false;
+}
+
+size_t ClientPosix::write(const uint8_t* buf, size_t size) {
+  return ::send(_sockfd, buf, size, 0);
+}
+
+int ClientPosix::read(uint8_t* buf, size_t size) {
+  int ret = ::recv(_sockfd, buf, size, MSG_DONTWAIT);
+  /*
+  if (ret < 0) {
+    emc_log_e("Error reading: %s", strerror(errno));
+  }
+  */
+  return ret;
+}
+
+void ClientPosix::stop() {
+  if (_sockfd >= 0) {
+    ::close(_sockfd);
+    _sockfd = -1;
+  }
+}
+
+bool ClientPosix::connected() {
+  return _sockfd >= 0;
+}
+
+bool ClientPosix::disconnected() {
+  return _sockfd < 0;
+}
+
+}  // namespace espMqttClientInternals
+
+#endif