File content as of revision 79:7cade4176d12:

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

Serial pc(USBTX, USBRX);

/* List of trusted root CA certificates
 * This is the root CA for Google from GeoTrustGlobalCA
 *
 * To add more root certificates, just concatenate them.
 */
const char SSL_CA_PEM[] = "-----BEGIN CERTIFICATE-----\n"
"MIIDujCCAqKgAwIBAgILBAAAAAABD4Ym5g0wDQYJKoZIhvcNAQEFBQAwTDEgMB4G\n"
"A1UECxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjIxEzARBgNVBAoTCkdsb2JhbFNp\n"
"Z24xEzARBgNVBAMTCkdsb2JhbFNpZ24wHhcNMDYxMjE1MDgwMDAwWhcNMjExMjE1\n"
"MDgwMDAwWjBMMSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMjETMBEG\n"
"A1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjCCASIwDQYJKoZI\n"
"hvcNAQEBBQADggEPADCCAQoCggEBAKbPJA6+Lm8omUVCxKs+IVSbC9N/hHD6ErPL\n"
"v4dfxn+G07IwXNb9rfF73OX4YJYJkhD10FPe+3t+c4isUoh7SqbKSaZeqKeMWhG8\n"
"eoLrvozps6yWJQeXSpkqBy+0Hne/ig+1AnwblrjFuTosvNYSuetZfeLQBoZfXklq\n"
"tTleiDTsvHgMCJiEbKjNS7SgfQx5TfC4LcshytVsW33hoCmEofnTlEnLJGKRILzd\n"
"C9XZzPnqJworc5HGnRusyMvo4KD0L5CLTfuwNhv2GXqF4G3yYROIXJ/gkwpRl4pa\n"
"zq+r1feqCapgvdzZX99yqWATXgAByUr6P6TqBwMhAo6CygPCm48CAwEAAaOBnDCB\n"
"mTAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUm+IH\n"
"V2ccHsBqBt5ZtJot39wZhi4wNgYDVR0fBC8wLTAroCmgJ4YlaHR0cDovL2NybC5n\n"
"bG9iYWxzaWduLm5ldC9yb290LXIyLmNybDAfBgNVHSMEGDAWgBSb4gdXZxwewGoG\n"
"3lm0mi3f3BmGLjANBgkqhkiG9w0BAQUFAAOCAQEAmYFThxxol4aR7OBKuEQLq4Gs\n"
"J0/WwbgcQ3izDJr86iw8bmEbTUsp9Z8FHSbBuOmDAGJFtqkIk7mpM0sYmsL4h4hO\n"
"291xNBrBVNpGP+DTKqttVCL1OmLNIG+6KYnX3ZHu01yiPqFbQfXf5WRDLenVOavS\n"
"ot+3i9DAgBkcRcAtjOj4LaR0VknFBbVPFd5uRHg5h6h+u/N5GJG79G+dwfCMNYxd\n"
"AfvDbbnvRG15RjF+Cv6pgsH/76tuIMRQyV+dTZsXjAzlAcmgQWpzU/qlULRuJQ/7\n"
"TBj0/VLZjmmx6BEP3ojY+x1J96relc8geMJgEtslQIxq/H5COEBkEveegeGTLg==\n"
"-----END CERTIFICATE-----";

void dump_response(HttpResponse* res) {
    mbedtls_printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str());

    mbedtls_printf("Headers:\n");
    for (size_t ix = 0; ix < res->get_headers_length(); ix++) {
        mbedtls_printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str());
    }
    mbedtls_printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str());
}

int main() {
    pc.baud(115200);

    NetworkInterface* network = easy_connect(true);
    if (!network) {
        return 1;
    }

    // GET request to firebase.google.com
    {
        printf("\n----- HTTPS GET request -----\n");

        HttpsRequest* get_req = new HttpsRequest(network, SSL_CA_PEM, HTTP_GET, "https://firebase.google.com/styles/docs.css");
        get_req->set_debug(true);

        HttpResponse* get_res = get_req->send();
        if (!get_res) {
            printf("HttpRequest failed (error code %d)\n", get_req->get_error());
            return 1;
        }
        printf("\n----- HTTPS GET response -----\n");
        dump_response(get_res);

        delete get_req;
    }

    Thread::wait(osWaitForever);
}