Diff: src/MQTTNetwork.h

Revision:

3:62825c5f3cd7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/MQTTNetwork.h	Sat Nov 13 09:06:17 2021 +0000
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2019, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _MQTTNETWORK_H_
+#define _MQTTNETWORK_H_
+
+#include "NetworkInterface.h"
+#include "TCPSocket.h"
+
+class MQTTNetwork {
+public:
+    MQTTNetwork(NetworkInterface *aNetwork) : network(aNetwork)
+    {
+        socket = new TCPSocket();
+    }
+
+    ~MQTTNetwork()
+    {
+        delete socket;
+    }
+
+    int read(unsigned char *buffer, int len, int timeout)
+    {
+        int ret = socket->recv(buffer, len);
+        if (ret == 0) {
+            // A receive size of 0 indicates that the socket
+            // was successfully closed so indicate this to MQTTClient
+            ret = -1;
+        }
+        return ret;
+    }
+
+    int write(unsigned char *buffer, int len, int timeout)
+    {
+        int ret = socket->send(buffer, len);
+        if (ret == 0) {
+            // The socket is closed so indicate this to MQTTClient
+            return -1;
+        }
+        return ret;
+    }
+
+    int connect(const char *hostname, int port)
+    {
+        int ret = NSAPI_ERROR_OK;
+        if ((ret = socket->open(network)) != NSAPI_ERROR_OK) {
+            return ret;
+        }
+        SocketAddress addr;
+        if (network->gethostbyname(hostname, &addr) != NSAPI_ERROR_OK) {
+            return NSAPI_ERROR_DNS_FAILURE;
+        }
+        addr.set_port(port);
+        return socket->connect(addr);
+    }
+
+    int disconnect()
+    {
+        return socket->close();
+    }
+
+private:
+    NetworkInterface *network;
+    TCPSocket *socket;
+};
+
+#endif // _MQTTNETWORK_H_