Diff: src/Platform/mbed/MQTTNetwork.h

Revision:

0:09ef59d2d0f7

Child:

11:532406b58e8f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Platform/mbed/MQTTNetwork.h	Fri Oct 07 17:21:45 2016 +0000
@@ -0,0 +1,100 @@
+/*
+The MIT License(MIT)
+
+Cayenne MQTT Client Library
+Copyright (c) 2016 myDevices
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files(the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the Software,
+and to permit persons to whom the Software is furnished to do so, subject to the following conditions :
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef _MQTTNETWORK_h
+#define _MQTTNETWORK_h
+
+#include "mbed.h"
+#include "TCPSocketConnection.h"
+
+/**
+* Networking class for use with MQTTClient.
+* @param Interface A network interface class with the methods: init, connect and disconnect.
+*/
+template<class Interface>
+class MQTTNetwork
+{
+public:
+    /**
+    * Construct the network interface.
+    * @param[in] interface The network interface to use
+    */
+    MQTTNetwork(Interface& interface) : _interface(interface) {
+    }
+      
+    /**
+    * Connect the network interface.
+    * @param[in] hostname Host for connection
+    * @param[in] port Port for connection
+    * @param[in] timeout_ms Timeout for the read operation, in milliseconds
+    * @return 0 on success, -1 on failure.
+    */
+    int connect(char* hostname, int port, int timeout_ms = 1000) {
+        _interface.connect();
+        _socket.set_blocking(false, timeout_ms);
+        return _socket.connect(hostname, port);
+    }
+    
+    /**
+    * Disconnect the network interface.
+    * @return true if disconnect was successful, false otherwise
+    */
+    bool disconnect()
+    {
+        _socket.close();
+        return _interface.disconnect();
+    }
+
+    /**
+    * Check if connected.
+    * @return true if connected, false otherwise
+    */
+    bool connected()
+    {
+        return _socket.is_connected();
+    }
+    
+    /**
+    * Read data from the network.
+    * @param[out] buffer Buffer that receives the data
+    * @param[in] len Buffer length
+    * @param[in] timeout_ms Timeout for the read operation, in milliseconds
+    * @return 1 for success, any other value for error
+    */
+    int read(unsigned char* buffer, int len, int timeout_ms) {
+        _socket.set_blocking(false, timeout_ms);
+        return _socket.receive((char*)buffer, len);
+    }
+    
+    /**
+    * Write data to the network.
+    * @param[in] buffer Buffer that contains data to write
+    * @param[in] len Number of bytes to write
+    * @param[in] timeout_ms Timeout for the write operation, in milliseconds
+    * @return Number of bytes written on success, a negative value for error
+    */
+    int write(unsigned char* buffer, int len, int timeout_ms) {
+        _socket.set_blocking(false, timeout_ms);  
+        return _socket.send((char*)buffer, len);
+    }   
+
+private:
+    Interface& _interface;
+    TCPSocketConnection _socket;      
+};
+
+#endif
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