|
| 1 | +/* |
| 2 | +/* |
| 3 | + * Created on: Nov 10, 2020 |
| 4 | + * Authors: Mohammed Abdelmaksoud & Hatim Jamali |
| 5 | + * 1NCE GmbH |
| 6 | + * |
| 7 | + */ |
| 8 | + |
| 9 | +/** |
| 10 | + * @file iot_demo_coap.c |
| 11 | + * @brief Demonstrates usage of lobaro COAP library. |
| 12 | + */ |
| 13 | + |
| 14 | +/* The config header is always included first. */ |
| 15 | +#include "iot_config.h" |
| 16 | + |
| 17 | +/* Standard includes. */ |
| 18 | +#include <stdbool.h> |
| 19 | +#include <stdio.h> |
| 20 | +#include <stdlib.h> |
| 21 | +#include <string.h> |
| 22 | + |
| 23 | +/* Set up logging for this demo. */ |
| 24 | +#include "iot_demo_logging.h" |
| 25 | + |
| 26 | +/* Platform layer includes. */ |
| 27 | +#include "platform/iot_clock.h" |
| 28 | +#include "platform/iot_threads.h" |
| 29 | +#include "platform/iot_network.h" |
| 30 | + |
| 31 | +/* COAP include. */ |
| 32 | +#include "coap_main.h" |
| 33 | + |
| 34 | + |
| 35 | +/*-----------------------------------------------------------*/ |
| 36 | + |
| 37 | + |
| 38 | + |
| 39 | +CoAP_RespHandler_fn_t CoAP_Resp_handler(CoAP_Message_t* pRespMsg, NetEp_t* Sender) { |
| 40 | + configPRINTF( |
| 41 | + ( "MESSAGE Payload : %s \r\n" , pRespMsg->Payload )); |
| 42 | + PrintEndpoint(Sender); |
| 43 | +} |
| 44 | + |
| 45 | +/* Declaration of demo function. */ |
| 46 | +int RuncoapDemo( bool awsIotMqttMode, |
| 47 | + const char * pIdentifier, |
| 48 | + void * pNetworkServerInfo, |
| 49 | + void * pNetworkCredentialInfo, |
| 50 | + const IotNetworkInterface_t * pNetworkInterface ); |
| 51 | + |
| 52 | +/*-----------------------------------------------------------*/ |
| 53 | +/** |
| 54 | + * @brief The function that runs the COAP demo, called by the demo runner. |
| 55 | + * @return `EXIT_SUCCESS` if the demo completes successfully; `EXIT_FAILURE` otherwise. |
| 56 | + */ |
| 57 | +int RuncoapDemo(bool awsIotMqttMode, |
| 58 | + const char * pIdentifier, |
| 59 | + void * pNetworkServerInfo, |
| 60 | + void * pNetworkCredentialInfo, |
| 61 | + const IotNetworkInterface_t * pNetworkInterface) |
| 62 | +{ |
| 63 | + /* Return value of this function and the exit status of this program. */ |
| 64 | + int status = EXIT_FAILURE; |
| 65 | + |
| 66 | + SocketsSockaddr_t ServerAddress; |
| 67 | + NetPacket_t pPacket; |
| 68 | + |
| 69 | + configPRINTF(( "Connecting to CoAP server\r\n" )); |
| 70 | + ServerAddress.usPort = SOCKETS_htons(configCOAP_PORT); |
| 71 | + ServerAddress.ulAddress = SOCKETS_inet_addr_quick(configCOAP_SERVER_ADDR0, |
| 72 | + configCOAP_SERVER_ADDR1, configCOAP_SERVER_ADDR2, |
| 73 | + configCOAP_SERVER_ADDR3); |
| 74 | + const NetEp_t ServerEp = { .NetType = IPV4, .NetPort = |
| 75 | + configCOAP_PORT, .NetAddr = { .IPv4 = { .u8 = { |
| 76 | + configCOAP_SERVER_ADDR0, configCOAP_SERVER_ADDR1, |
| 77 | + configCOAP_SERVER_ADDR2, configCOAP_SERVER_ADDR3 } } } }; |
| 78 | + |
| 79 | + |
| 80 | + /* Create UDP Socket */ |
| 81 | + Socket_t udp = SOCKETS_Socket( SOCKETS_AF_INET, SOCKETS_SOCK_DGRAM, |
| 82 | + SOCKETS_IPPROTO_UDP); |
| 83 | + CoAP_Socket_t *socket = AllocSocket(); |
| 84 | + |
| 85 | + /* Connect to CoAP server */ |
| 86 | + if ( SOCKETS_Connect(udp, &ServerAddress, sizeof(ServerAddress)) == 0) { |
| 87 | + configPRINTF(( "Connected to CoAP server \r\n" )); |
| 88 | + |
| 89 | + /* Add payload */ |
| 90 | + char pcTransmittedString[] = "hello from CoAP"; |
| 91 | + |
| 92 | + /* Add socket and Network Interface configuration */ |
| 93 | + socket->Handle = udp; |
| 94 | + socket->Tx = CoAP_Send_Wifi; |
| 95 | + |
| 96 | + /* Create confirmable CoAP POST packet with URI Path option */ |
| 97 | + CoAP_Message_t *pReqMsg = CoAP_CreateMessage(CON, REQ_POST, |
| 98 | + CoAP_GetNextMid(), CoAP_GenerateToken()); |
| 99 | + |
| 100 | + CoAP_addNewPayloadToMessage(pReqMsg, pcTransmittedString, |
| 101 | + strlen(pcTransmittedString)); |
| 102 | + CoAP_AddOption(pReqMsg, OPT_NUM_URI_PATH, configCOAP_URI_PATH , strlen(configCOAP_URI_PATH)); |
| 103 | + |
| 104 | + |
| 105 | + /* Create CoAP Client Interaction to send a confirmable POST Request */ |
| 106 | + CoAP_StartNewClientInteraction( pReqMsg,socket->Handle, &ServerEp, CoAP_Resp_handler); |
| 107 | + CoAP_Interaction_t* pIA = CoAP_GetLongestPendingInteraction(); |
| 108 | + |
| 109 | + |
| 110 | + /* Execute the Interaction list */ |
| 111 | + |
| 112 | + while (pIA != NULL) { |
| 113 | + |
| 114 | + CoAP_doWork(); |
| 115 | + |
| 116 | + if (pIA->State == COAP_STATE_WAITING_RESPONSE){ |
| 117 | + CoAP_Recv_Wifi(socket->Handle, &pPacket,ServerEp); |
| 118 | + } |
| 119 | + pIA = CoAP_GetLongestPendingInteraction(); |
| 120 | + |
| 121 | + if (pIA->State == COAP_STATE_FINISHED) |
| 122 | + { |
| 123 | + status = EXIT_SUCCESS; |
| 124 | + } |
| 125 | + } |
| 126 | + |
| 127 | + } |
| 128 | + |
| 129 | + |
| 130 | + |
| 131 | + |
| 132 | + return status; |
| 133 | +} |
| 134 | + |
| 135 | +/*-----------------------------------------------------------*/ |
0 commit comments