MultiTech / Mbed 2 deprecated Dragonfly_Cellular_HTTPS_Example

Does HTTPS GET and POST requests using the onboard cellular radio.

Dependencies:   mbed mtsas

main.cpp@0:6ce1803b7a03, 2015-09-30 (annotated)

Committer:
mfiore
Date:
Wed Sep 30 19:08:10 2015 +0000
Revision:
0:6ce1803b7a03
Child:
1:26b8af61d0ac
initial commit - just set APN

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfiore 0:6ce1803b7a03 1 /** Dragonfly Cellular HTTPS Example
mfiore 0:6ce1803b7a03 2 * Configures the cellular radio, brings up the cellular link, and does HTTPS GET and POST requests.
mfiore 0:6ce1803b7a03 3 * To do HTTPS requests with a certain server, the root certificate used to validate that server's certificate must be installed. See ssl_certificates.h for information on how to get the proper root certificate.
mfiore 0:6ce1803b7a03 4 *
mfiore 0:6ce1803b7a03 5 * NOTE: This example changes the baud rate of the debug port to 115200 baud!
mfiore 0:6ce1803b7a03 6 */
mfiore 0:6ce1803b7a03 7
mfiore 0:6ce1803b7a03 8 #include "mbed.h"
mfiore 0:6ce1803b7a03 9 #include "mtsas.h"
mfiore 0:6ce1803b7a03 10 #include "ssl_certificates.h"
mfiore 0:6ce1803b7a03 11
mfiore 0:6ce1803b7a03 12 bool init_mtsas();
mfiore 0:6ce1803b7a03 13 char* httpResToStr(HTTPResult res);
mfiore 0:6ce1803b7a03 14
mfiore 0:6ce1803b7a03 15 // The MTSSerialFlowControl object represents the physical serial link between the processor and the cellular radio.
mfiore 0:6ce1803b7a03 16 mts::MTSSerialFlowControl* io;
mfiore 0:6ce1803b7a03 17 // The Cellular object represents the cellular radio.
mfiore 0:6ce1803b7a03 18 mts::Cellular* radio;
mfiore 0:6ce1803b7a03 19
mfiore 0:6ce1803b7a03 20 // An APN is required for GSM radios.
mfiore 0:6ce1803b7a03 21 static const char apn[] = "";
mfiore 0:6ce1803b7a03 22
mfiore 0:6ce1803b7a03 23 bool radio_ok = false;
mfiore 0:6ce1803b7a03 24
mfiore 0:6ce1803b7a03 25 int main() {
mfiore 0:6ce1803b7a03 26 // Change the baud rate of the debug port from the default 9600 to 115200.
mfiore 0:6ce1803b7a03 27 Serial debug(USBTX, USBRX);
mfiore 0:6ce1803b7a03 28 debug.baud(115200);
mfiore 0:6ce1803b7a03 29
mfiore 0:6ce1803b7a03 30 //Sets the log level to INFO, higher log levels produce more log output.
mfiore 0:6ce1803b7a03 31 //Possible levels: NONE, FATAL, ERROR, WARNING, INFO, DEBUG, TRACE
mfiore 0:6ce1803b7a03 32 mts::MTSLog::setLogLevel(mts::MTSLog::INFO_LEVEL);
mfiore 0:6ce1803b7a03 33
mfiore 0:6ce1803b7a03 34 logInfo("initializing cellular radio");
mfiore 0:6ce1803b7a03 35 radio_ok = init_mtsas();
mfiore 0:6ce1803b7a03 36 if (! radio_ok) {
mfiore 0:6ce1803b7a03 37 while (true) {
mfiore 0:6ce1803b7a03 38 logError("failed to initialize cellular radio");
mfiore 0:6ce1803b7a03 39 wait(1);
mfiore 0:6ce1803b7a03 40 }
mfiore 0:6ce1803b7a03 41 }
mfiore 0:6ce1803b7a03 42
mfiore 0:6ce1803b7a03 43 logInfo("setting APN");
mfiore 0:6ce1803b7a03 44 if (radio->setApn(apn) != MTS_SUCCESS)
mfiore 0:6ce1803b7a03 45 logError("failed to set APN to \"%s\"", apn);
mfiore 0:6ce1803b7a03 46
mfiore 0:6ce1803b7a03 47 logInfo("bringing up the link");
mfiore 0:6ce1803b7a03 48 if (! radio->connect()) {
mfiore 0:6ce1803b7a03 49 logError("failed to bring up the link");
mfiore 0:6ce1803b7a03 50 } else {
mfiore 0:6ce1803b7a03 51
mfiore 0:6ce1803b7a03 52 // HTTPClient object used for HTTP requests.
mfiore 0:6ce1803b7a03 53 HTTPClient http;
mfiore 0:6ce1803b7a03 54
mfiore 0:6ce1803b7a03 55 // Enable strict certificate validation.
mfiore 0:6ce1803b7a03 56 http.setPeerVerification(VERIFY_PEER);
mfiore 0:6ce1803b7a03 57
mfiore 0:6ce1803b7a03 58 // Load certificates defined in ssl_certificates.h.
mfiore 0:6ce1803b7a03 59 // See comments in ssl_certificates.h for information on how to get and format root certificates.
mfiore 0:6ce1803b7a03 60 if (http.addRootCACertificate(ssl_certificates) != HTTP_OK)
mfiore 0:6ce1803b7a03 61 logError("loading SSL certificates failed");
mfiore 0:6ce1803b7a03 62
mfiore 0:6ce1803b7a03 63 // HTTP GET example - httpbin.org
mfiore 0:6ce1803b7a03 64 {
mfiore 0:6ce1803b7a03 65 char http_rx_buf[1024];
mfiore 0:6ce1803b7a03 66 HTTPResult res;
mfiore 0:6ce1803b7a03 67
mfiore 0:6ce1803b7a03 68 // IHTTPDataIn object - will contain data received from server.
mfiore 0:6ce1803b7a03 69 HTTPText http_rx(http_rx_buf, sizeof(http_rx_buf));
mfiore 0:6ce1803b7a03 70
mfiore 0:6ce1803b7a03 71 // Make a HTTP GET request to http://httpbin.org/
mfiore 0:6ce1803b7a03 72 res = http.get("https://httpbin.org/get", &http_rx);
mfiore 0:6ce1803b7a03 73 if (res != HTTP_OK)
mfiore 0:6ce1803b7a03 74 logError("HTTPS GET failed [%d][%s]", res, httpResToStr(res));
mfiore 0:6ce1803b7a03 75 else
mfiore 0:6ce1803b7a03 76 logInfo("HTTPS GET succeeded [%d]\r\n%s", http.getHTTPResponseCode(), http_rx_buf);
mfiore 0:6ce1803b7a03 77 }
mfiore 0:6ce1803b7a03 78
mfiore 0:6ce1803b7a03 79 // HTTP POST example - httpbin.org
mfiore 0:6ce1803b7a03 80 {
mfiore 0:6ce1803b7a03 81 char http_rx_buf[1024];
mfiore 0:6ce1803b7a03 82 HTTPResult res;
mfiore 0:6ce1803b7a03 83
mfiore 0:6ce1803b7a03 84 char http_tx_buf[] = "{ \"name\": \"temp_1\", \"temperature\": 75 }";
mfiore 0:6ce1803b7a03 85
mfiore 0:6ce1803b7a03 86 // IHTTPDataIn object - will contain data received from server.
mfiore 0:6ce1803b7a03 87 HTTPText http_rx(http_rx_buf, sizeof(http_rx_buf));
mfiore 0:6ce1803b7a03 88
mfiore 0:6ce1803b7a03 89 // IHTTPDataOut object - contains data to be posted to server.
mfiore 0:6ce1803b7a03 90 // HTTPJson automatically adds the JSON content-type header to the request.
mfiore 0:6ce1803b7a03 91 HTTPJson http_tx(http_tx_buf, sizeof(http_tx_buf));
mfiore 0:6ce1803b7a03 92
mfiore 0:6ce1803b7a03 93 // Make a HTTP POST request to http://httpbin.org/
mfiore 0:6ce1803b7a03 94 res = http.post("https://httpbin.org/post", http_tx, &http_rx);
mfiore 0:6ce1803b7a03 95 if (res != HTTP_OK)
mfiore 0:6ce1803b7a03 96 logError("HTTPS POST failed [%d][%s]", res, httpResToStr(res));
mfiore 0:6ce1803b7a03 97 else
mfiore 0:6ce1803b7a03 98 logInfo("HTTPS POST succeeded [%d]\r\n%s", http.getHTTPResponseCode(), http_rx_buf);
mfiore 0:6ce1803b7a03 99 }
mfiore 0:6ce1803b7a03 100 }
mfiore 0:6ce1803b7a03 101
mfiore 0:6ce1803b7a03 102 logInfo("finished - bringing down link");
mfiore 0:6ce1803b7a03 103 radio->disconnect();
mfiore 0:6ce1803b7a03 104
mfiore 0:6ce1803b7a03 105 return 0;
mfiore 0:6ce1803b7a03 106 }
mfiore 0:6ce1803b7a03 107
mfiore 0:6ce1803b7a03 108 bool init_mtsas() {
mfiore 0:6ce1803b7a03 109 io = new mts::MTSSerialFlowControl(RADIO_TX, RADIO_RX, RADIO_RTS, RADIO_CTS);
mfiore 0:6ce1803b7a03 110 if (! io)
mfiore 0:6ce1803b7a03 111 return false;
mfiore 0:6ce1803b7a03 112
mfiore 0:6ce1803b7a03 113 // radio default baud rate is 115200
mfiore 0:6ce1803b7a03 114 io->baud(115200);
mfiore 0:6ce1803b7a03 115 radio = mts::CellularFactory::create(io);
mfiore 0:6ce1803b7a03 116 if (! radio)
mfiore 0:6ce1803b7a03 117 return false;
mfiore 0:6ce1803b7a03 118
mfiore 0:6ce1803b7a03 119 // Transport must be set properly before any TCPSocketConnection or UDPSocket objects are created
mfiore 0:6ce1803b7a03 120 Transport::setTransport(radio);
mfiore 0:6ce1803b7a03 121
mfiore 0:6ce1803b7a03 122 return true;
mfiore 0:6ce1803b7a03 123 }
mfiore 0:6ce1803b7a03 124
mfiore 0:6ce1803b7a03 125 char* httpResToStr(HTTPResult res) {
mfiore 0:6ce1803b7a03 126 switch(res) {
mfiore 0:6ce1803b7a03 127 case HTTP_PROCESSING:
mfiore 0:6ce1803b7a03 128 return "HTTP_PROCESSING";
mfiore 0:6ce1803b7a03 129 case HTTP_PARSE:
mfiore 0:6ce1803b7a03 130 return "HTTP_PARSE";
mfiore 0:6ce1803b7a03 131 case HTTP_DNS:
mfiore 0:6ce1803b7a03 132 return "HTTP_DNS";
mfiore 0:6ce1803b7a03 133 case HTTP_PRTCL:
mfiore 0:6ce1803b7a03 134 return "HTTP_PRTCL";
mfiore 0:6ce1803b7a03 135 case HTTP_NOTFOUND:
mfiore 0:6ce1803b7a03 136 return "HTTP_NOTFOUND";
mfiore 0:6ce1803b7a03 137 case HTTP_REFUSED:
mfiore 0:6ce1803b7a03 138 return "HTTP_REFUSED";
mfiore 0:6ce1803b7a03 139 case HTTP_ERROR:
mfiore 0:6ce1803b7a03 140 return "HTTP_ERROR";
mfiore 0:6ce1803b7a03 141 case HTTP_TIMEOUT:
mfiore 0:6ce1803b7a03 142 return "HTTP_TIMEOUT";
mfiore 0:6ce1803b7a03 143 case HTTP_CONN:
mfiore 0:6ce1803b7a03 144 return "HTTP_CONN";
mfiore 0:6ce1803b7a03 145 case HTTP_CLOSED:
mfiore 0:6ce1803b7a03 146 return "HTTP_CLOSED";
mfiore 0:6ce1803b7a03 147 case HTTP_REDIRECT:
mfiore 0:6ce1803b7a03 148 return "HTTP_REDIRECT";
mfiore 0:6ce1803b7a03 149 case HTTP_OK:
mfiore 0:6ce1803b7a03 150 return "HTTP_OK";
mfiore 0:6ce1803b7a03 151 default:
mfiore 0:6ce1803b7a03 152 return "HTTP Result unknown";
mfiore 0:6ce1803b7a03 153 }
mfiore 0:6ce1803b7a03 154 }