Andrew Reed / Mbed OS CITY1082-i2c_master_wifi_mqtt

CITY3032-wifi-mqtt

src/MQTTNetwork.h@5:f62a9e4a499a, 2021-11-13 (annotated)

Committer:
reedas
Date:
Sat Nov 13 12:02:49 2021 +0000
Revision:
5:f62a9e4a499a
Parent:
3:62825c5f3cd7 
trying to include mbed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
reedas 3:62825c5f3cd7 1 /*
reedas 3:62825c5f3cd7 2 * Copyright (c) 2019, ARM Limited, All Rights Reserved
reedas 3:62825c5f3cd7 3 * SPDX-License-Identifier: Apache-2.0
reedas 3:62825c5f3cd7 4 *
reedas 3:62825c5f3cd7 5 * Licensed under the Apache License, Version 2.0 (the "License"); you may
reedas 3:62825c5f3cd7 6 * not use this file except in compliance with the License.
reedas 3:62825c5f3cd7 7 * You may obtain a copy of the License at
reedas 3:62825c5f3cd7 8 *
reedas 3:62825c5f3cd7 9 * http://www.apache.org/licenses/LICENSE-2.0
reedas 3:62825c5f3cd7 10 *
reedas 3:62825c5f3cd7 11 * Unless required by applicable law or agreed to in writing, software
reedas 3:62825c5f3cd7 12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
reedas 3:62825c5f3cd7 13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
reedas 3:62825c5f3cd7 14 * See the License for the specific language governing permissions and
reedas 3:62825c5f3cd7 15 * limitations under the License.
reedas 3:62825c5f3cd7 16 */
reedas 3:62825c5f3cd7 17
reedas 3:62825c5f3cd7 18 #ifndef _MQTTNETWORK_H_
reedas 3:62825c5f3cd7 19 #define _MQTTNETWORK_H_
reedas 3:62825c5f3cd7 20
reedas 3:62825c5f3cd7 21 #include "NetworkInterface.h"
reedas 3:62825c5f3cd7 22 #include "TCPSocket.h"
reedas 3:62825c5f3cd7 23
reedas 3:62825c5f3cd7 24 class MQTTNetwork {
reedas 3:62825c5f3cd7 25 public:
reedas 3:62825c5f3cd7 26 MQTTNetwork(NetworkInterface *aNetwork) : network(aNetwork)
reedas 3:62825c5f3cd7 27 {
reedas 3:62825c5f3cd7 28 socket = new TCPSocket();
reedas 3:62825c5f3cd7 29 }
reedas 3:62825c5f3cd7 30
reedas 3:62825c5f3cd7 31 ~MQTTNetwork()
reedas 3:62825c5f3cd7 32 {
reedas 3:62825c5f3cd7 33 delete socket;
reedas 3:62825c5f3cd7 34 }
reedas 3:62825c5f3cd7 35
reedas 3:62825c5f3cd7 36 int read(unsigned char *buffer, int len, int timeout)
reedas 3:62825c5f3cd7 37 {
reedas 3:62825c5f3cd7 38 int ret = socket->recv(buffer, len);
reedas 3:62825c5f3cd7 39 if (ret == 0) {
reedas 3:62825c5f3cd7 40 // A receive size of 0 indicates that the socket
reedas 3:62825c5f3cd7 41 // was successfully closed so indicate this to MQTTClient
reedas 3:62825c5f3cd7 42 ret = -1;
reedas 3:62825c5f3cd7 43 }
reedas 3:62825c5f3cd7 44 return ret;
reedas 3:62825c5f3cd7 45 }
reedas 3:62825c5f3cd7 46
reedas 3:62825c5f3cd7 47 int write(unsigned char *buffer, int len, int timeout)
reedas 3:62825c5f3cd7 48 {
reedas 3:62825c5f3cd7 49 int ret = socket->send(buffer, len);
reedas 3:62825c5f3cd7 50 if (ret == 0) {
reedas 3:62825c5f3cd7 51 // The socket is closed so indicate this to MQTTClient
reedas 3:62825c5f3cd7 52 return -1;
reedas 3:62825c5f3cd7 53 }
reedas 3:62825c5f3cd7 54 return ret;
reedas 3:62825c5f3cd7 55 }
reedas 3:62825c5f3cd7 56
reedas 3:62825c5f3cd7 57 int connect(const char *hostname, int port)
reedas 3:62825c5f3cd7 58 {
reedas 3:62825c5f3cd7 59 int ret = NSAPI_ERROR_OK;
reedas 3:62825c5f3cd7 60 if ((ret = socket->open(network)) != NSAPI_ERROR_OK) {
reedas 3:62825c5f3cd7 61 return ret;
reedas 3:62825c5f3cd7 62 }
reedas 3:62825c5f3cd7 63 SocketAddress addr;
reedas 3:62825c5f3cd7 64 if (network->gethostbyname(hostname, &addr) != NSAPI_ERROR_OK) {
reedas 3:62825c5f3cd7 65 return NSAPI_ERROR_DNS_FAILURE;
reedas 3:62825c5f3cd7 66 }
reedas 3:62825c5f3cd7 67 addr.set_port(port);
reedas 3:62825c5f3cd7 68 return socket->connect(addr);
reedas 3:62825c5f3cd7 69 }
reedas 3:62825c5f3cd7 70
reedas 3:62825c5f3cd7 71 int disconnect()
reedas 3:62825c5f3cd7 72 {
reedas 3:62825c5f3cd7 73 return socket->close();
reedas 3:62825c5f3cd7 74 }
reedas 3:62825c5f3cd7 75
reedas 3:62825c5f3cd7 76 private:
reedas 3:62825c5f3cd7 77 NetworkInterface *network;
reedas 3:62825c5f3cd7 78 TCPSocket *socket;
reedas 3:62825c5f3cd7 79 };
reedas 3:62825c5f3cd7 80
reedas 3:62825c5f3cd7 81 #endif // _MQTTNETWORK_H_