Francois Berder / Mbed 2 deprecated HTTPSClientExample2

This example shows how to use the TLS_cyassl library. It connects to twitter.com and downloads a webpage.

Dependencies:   EthernetInterface7 HTTPSClient_cyassl TLS_cyassl mbed-rtos mbed

Fork of HTTPSClientExample2 by Francois Berder

Once you imported this program, you need to load the right certificate. To do so, open the file cert.h in the TLS_cyassl library then, replace the content by this :

root certificate of twitter

static const uint8_t root_cert[] =
{
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};

static const uint32_t root_cert_len = sizeof(root_cert);

HTTPSClient.h@0:0687eb79c581, 2013-09-16 (annotated)

Committer:
feb11
Date:
Mon Sep 16 09:01:32 2013 +0000
Revision:
0:0687eb79c581
initial import

Who changed what in which revision?

UserRevisionLine numberNew contents of line
feb11 0:0687eb79c581 1 #ifndef HTTPS_CLIENT_H
feb11 0:0687eb79c581 2 #define HTTPS_CLIENT_H
feb11 0:0687eb79c581 3
feb11 0:0687eb79c581 4 #include <string>
feb11 0:0687eb79c581 5 #include "TLSConnection.h"
feb11 0:0687eb79c581 6 #include "HTTPHeader.h"
feb11 0:0687eb79c581 7
feb11 0:0687eb79c581 8
feb11 0:0687eb79c581 9 /** Simple wrapper of TLS library to send GET request to
feb11 0:0687eb79c581 10 a server and receive some web pages.
feb11 0:0687eb79c581 11 */
feb11 0:0687eb79c581 12 class HTTPSClient
feb11 0:0687eb79c581 13 {
feb11 0:0687eb79c581 14 public :
feb11 0:0687eb79c581 15
feb11 0:0687eb79c581 16 HTTPSClient();
feb11 0:0687eb79c581 17
feb11 0:0687eb79c581 18 /** Connnect to the given host.
feb11 0:0687eb79c581 19
feb11 0:0687eb79c581 20 \param host A valid hostname (e.g. "mbed.org")
feb11 0:0687eb79c581 21 \return True if the connection was established with
feb11 0:0687eb79c581 22 success, false otherwise.
feb11 0:0687eb79c581 23
feb11 0:0687eb79c581 24 \note If the client is already connected, it returns false.
feb11 0:0687eb79c581 25 */
feb11 0:0687eb79c581 26 bool connect(const std::string& host);
feb11 0:0687eb79c581 27
feb11 0:0687eb79c581 28 /** Send a GET request to the host.
feb11 0:0687eb79c581 29
feb11 0:0687eb79c581 30 \param path
feb11 0:0687eb79c581 31 \param hdr A pointer to an HTTPHeader object.
feb11 0:0687eb79c581 32 \return Returns 0 if the request was sent with success,
feb11 0:0687eb79c581 33 or -1 if an error occured.
feb11 0:0687eb79c581 34 */
feb11 0:0687eb79c581 35 int get(const std::string& path, HTTPHeader *hdr);
feb11 0:0687eb79c581 36
feb11 0:0687eb79c581 37 /** Send a get request and reads (partially) the body
feb11 0:0687eb79c581 38
feb11 0:0687eb79c581 39 \param path
feb11 0:0687eb79c581 40 \param hdr A pointer to an HTTPHeader object.
feb11 0:0687eb79c581 41 \param data A pointer to some buffer
feb11 0:0687eb79c581 42 \param length Maximum number of bytes to read
feb11 0:0687eb79c581 43 \return Number of bytes stored in data in range 0..length, or -1
feb11 0:0687eb79c581 44 if an error occured.
feb11 0:0687eb79c581 45
feb11 0:0687eb79c581 46 \note To check whether this request is sent with success, you must check
feb11 0:0687eb79c581 47 the status of the HTTPHeader and the value of the integer returned by this
feb11 0:0687eb79c581 48 function.
feb11 0:0687eb79c581 49
feb11 0:0687eb79c581 50 Example:
feb11 0:0687eb79c581 51 @code
feb11 0:0687eb79c581 52 // Assuming that an HTTPSClient object c is connected to a host
feb11 0:0687eb79c581 53 HTTPHeader hdr;
feb11 0:0687eb79c581 54 char buffer[256];
feb11 0:0687eb79c581 55 int n = c.get("/", &hdr, buffer, 256);
feb11 0:0687eb79c581 56 if(n > 0 && hdr.getStatus() == HTTP_OK) // GET request sent with success
feb11 0:0687eb79c581 57 {
feb11 0:0687eb79c581 58 // do some stuff here..
feb11 0:0687eb79c581 59 }
feb11 0:0687eb79c581 60 else
feb11 0:0687eb79c581 61 printf("Failed to send get request\n");
feb11 0:0687eb79c581 62 @endcode
feb11 0:0687eb79c581 63
feb11 0:0687eb79c581 64
feb11 0:0687eb79c581 65 \note If hdr is null, this function does not send anything and directly writes
feb11 0:0687eb79c581 66 bytes in data. This is particularly useful if you expect large answers (such as
feb11 0:0687eb79c581 67 webpages) from the host.
feb11 0:0687eb79c581 68 */
feb11 0:0687eb79c581 69 int get(const std::string& path, HTTPHeader *hdr, char *data, int length);
feb11 0:0687eb79c581 70
feb11 0:0687eb79c581 71 /** Disconnect from host
feb11 0:0687eb79c581 72
feb11 0:0687eb79c581 73 \return True if the client disconnected with success, false otherwise.
feb11 0:0687eb79c581 74 */
feb11 0:0687eb79c581 75 bool disconnect();
feb11 0:0687eb79c581 76
feb11 0:0687eb79c581 77 private :
feb11 0:0687eb79c581 78
feb11 0:0687eb79c581 79 std::string readLine();
feb11 0:0687eb79c581 80 HTTPHeader readHeader();
feb11 0:0687eb79c581 81
feb11 0:0687eb79c581 82 TLSConnection _con;
feb11 0:0687eb79c581 83
feb11 0:0687eb79c581 84 };
feb11 0:0687eb79c581 85
feb11 0:0687eb79c581 86 #endif
feb11 0:0687eb79c581 87