Osamu Koizumi / Mbed OS Hello-TLSSocket-old

Https example program using TLSSocket library.

Hello-TLSSocket

TLSSocket library example program.

In this example, https connection to os.mbed.com is established by using TLSSocket. The program is tested on K64F.

Output from console

When set mbed-trace.enable true.

HelloTSLSocket, HTTPS example of TLSSocket

[INFO][TLSx]: Connecting to os.mbed.com:443
[INFO][TLSx]: Connected.
[INFO][TLSx]: Starting the TLS handshake...
[INFO][TLSx]: TLS connection to os.mbed.com:443 established

[DBG ][TLSx]: Server certificate:
    cert. version     : 3
    serial number     : 03:56:D4:79:41:63:31:CA:E0:56:06:61
    issuer name       : C=BE, O=GlobalSign nv-sa, CN=GlobalSign Organization Validation CA - SHA256 - G2
    subject name      : C=GB, ST=Cambridgeshire, L=Cambridge, O=Arm Ltd, CN=*.mbed.com
    issued  on        : 2018-05-04 15:36:03
    expires on        : 2019-06-06 10:31:02
    signed using      : RSA with SHA-256
    RSA key size      : 2048 bits
    basic constraints : CA=false
    subject alt name  : *.mbed.com, mbed.org, *.mbed.org, mbed.com
    key usage         : Digital Signature, Key Encipherment
    ext key usage     : TLS Web Server Authentication, TLS Web Client Authentication


[INFO][TLSx]: Certificate verification passed

GET / HTTP/1.1
Host: os.mbed.com
Connection: close

HTTP/1.1 200 OK
Server: nginx/1.11.12
Date: Wed, 13 Jun 2018 08:26:02 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: close
Vary: Accept-Language,Cookie,Accept-Encoding
Content-Language: en-gb
Set-Cookie: csrftoken=zM3AGfeZ6W4OQZsT6nCcxNBYxEEN73sf; expires=Wed, 12-Jun-2019 08:25:33 GMT; Max-Age=31449600; Path=/
Strict-Transport-Security: max-age=31536000; includeSubdomains

eae
<!DOCTYPE html>

...
...
...

        AJAX_req.onreadystatechange = handle_AJAX_Complete;
        AJAX_req.send();
    }
</script>


</body>
</html>

0

HelloTSLSocket DONE.

main.cpp

Committer:
Osamu Koizumi
Date:
2018-06-15
Revision:
13:e82471c0624c
Parent:
12:7d952bcda2c1

File content as of revision 13:e82471c0624c:

#include "mbed.h"
#include "easy-connect.h"
#include "TLSSocket.h"

#include "mbed-trace/mbed_trace.h"

const char* HOST_NAME = "os.mbed.com";
const int PORT = 443;
const char* HTTPS_PATH = "/";

int main(int argc, char* argv[]) {
    mbed_trace_init();

    printf("HelloTSLSocket, HTTPS example of TLSSocket\r\n");
    printf("\r\n");

    // Open a network interface
    NetworkInterface* network = NULL;
    network = easy_connect(false);    // If true, prints out connection details.
    if (!network) {
        printf("Unable to open network interface.\r\n");
        return -1;
    }

    // Create a TLS socket
    TLSSocket socket = TLSSocket();
    if(socket.open(network) != 0) {
        printf("Unable to open TLS socket.\r\n");
        return -1;
    }

    // Set root CA certificate
    socket.set_root_ca_cert(MBED_CONF_APP_ROOT_CA_CERT_PEM);

    // Connect to the server, including TLS handshake
    if(socket.connect(HOST_NAME, PORT) != 0) {
        printf("Failed to connect to the server.");
        return -1;
    }
    
    const size_t buf_size = 1024;
    char *buf = new char[buf_size];

    // Send HTTP request
    /* "Connection: close" header is specified to detect end of the body
     * contents by connection close notification. If this is not specified,
     * connection is kept, and need to detect end of the content in another
     * way.
     */
    int len = snprintf(buf, buf_size, 
                "GET %s HTTP/1.1\n"
                "Host: %s\n"
                "Connection: close\n"
                "\n", HTTPS_PATH, HOST_NAME);
    printf("\r\n%s", buf);
    int rc = 0;
    rc = socket.send(buf, len);
    if(rc < 0) {
        printf("send error.\r\n");
        return -1;
    }

    // Receive response from the server
    while((rc = socket.recv(buf, buf_size - 1)) > 0) {
        buf[rc] = '\0';
        printf("%s", buf);
    }
    if(rc < 0) {
        printf("\r\n! Read failed. err code = %d\r\n", rc);
    }

    // Done
    printf("HelloTSLSocket DONE.\r\n");
    delete[] buf;
    
    socket.close();
}