Boon Boon / Mbed OS lpc1768_appboard_http_thingsboard

simple http request (temperature data) from mbed lpc1768 with application board to thingsboard device/dashboard

Dependencies:   LM75B mbed-http

Fork of http-example by sandbox

source/main-https-chunked-request.cpp@31:cba9d9dea21a, 2018-06-29 (annotated)

Committer:
daklowprofile
Date:
Fri Jun 29 03:19:58 2018 +0000
Revision:
31:cba9d9dea21a
don't change anything

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daklowprofile 31:cba9d9dea21a 1 /**
daklowprofile 31:cba9d9dea21a 2 * This is an example of doing chunked requests, where you do not need to load the full request body
daklowprofile 31:cba9d9dea21a 3 * into memory. You do this by adding a callback to the `send` function of the HTTP/HTTPS request.
daklowprofile 31:cba9d9dea21a 4 */
daklowprofile 31:cba9d9dea21a 5
daklowprofile 31:cba9d9dea21a 6 #include "select-demo.h"
daklowprofile 31:cba9d9dea21a 7
daklowprofile 31:cba9d9dea21a 8 #if DEMO == DEMO_HTTPS_CHUNKED_REQUEST
daklowprofile 31:cba9d9dea21a 9
daklowprofile 31:cba9d9dea21a 10 #include "mbed.h"
daklowprofile 31:cba9d9dea21a 11 #include "https_request.h"
daklowprofile 31:cba9d9dea21a 12 #include "easy-connect.h"
daklowprofile 31:cba9d9dea21a 13
daklowprofile 31:cba9d9dea21a 14 /* List of trusted root CA certificates
daklowprofile 31:cba9d9dea21a 15 * currently one: Comodo, the CA for reqres.in
daklowprofile 31:cba9d9dea21a 16 *
daklowprofile 31:cba9d9dea21a 17 * To add more root certificates, just concatenate them.
daklowprofile 31:cba9d9dea21a 18 */
daklowprofile 31:cba9d9dea21a 19 const char SSL_CA_PEM[] = "-----BEGIN CERTIFICATE-----\n"
daklowprofile 31:cba9d9dea21a 20 "MIICiTCCAg+gAwIBAgIQH0evqmIAcFBUTAGem2OZKjAKBggqhkjOPQQDAzCBhTEL\n"
daklowprofile 31:cba9d9dea21a 21 "MAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UE\n"
daklowprofile 31:cba9d9dea21a 22 "BxMHU2FsZm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxKzApBgNVBAMT\n"
daklowprofile 31:cba9d9dea21a 23 "IkNPTU9ETyBFQ0MgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNMDgwMzA2MDAw\n"
daklowprofile 31:cba9d9dea21a 24 "MDAwWhcNMzgwMTE4MjM1OTU5WjCBhTELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdy\n"
daklowprofile 31:cba9d9dea21a 25 "ZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMRQ09N\n"
daklowprofile 31:cba9d9dea21a 26 "T0RPIENBIExpbWl0ZWQxKzApBgNVBAMTIkNPTU9ETyBFQ0MgQ2VydGlmaWNhdGlv\n"
daklowprofile 31:cba9d9dea21a 27 "biBBdXRob3JpdHkwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAAQDR3svdcmCFYX7deSR\n"
daklowprofile 31:cba9d9dea21a 28 "FtSrYpn1PlILBs5BAH+X4QokPB0BBO490o0JlwzgdeT6+3eKKvUDYEs2ixYjFq0J\n"
daklowprofile 31:cba9d9dea21a 29 "cfRK9ChQtP6IHG4/bC8vCVlbpVsLM5niwz2J+Wos77LTBumjQjBAMB0GA1UdDgQW\n"
daklowprofile 31:cba9d9dea21a 30 "BBR1cacZSBm8nZ3qQUfflMRId5nTeTAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/\n"
daklowprofile 31:cba9d9dea21a 31 "BAUwAwEB/zAKBggqhkjOPQQDAwNoADBlAjEA7wNbeqy3eApyt4jf/7VGFAkK+qDm\n"
daklowprofile 31:cba9d9dea21a 32 "fQjGGoe9GKhzvSbKYAydzpmfz1wPMOG+FDHqAjAU9JM8SaczepBGR7NjfRObTrdv\n"
daklowprofile 31:cba9d9dea21a 33 "GDeAU/7dIOA1mjbRxwG55tzd8/8dLDoWV9mSOdY=\n"
daklowprofile 31:cba9d9dea21a 34 "-----END CERTIFICATE-----\n";
daklowprofile 31:cba9d9dea21a 35
daklowprofile 31:cba9d9dea21a 36 void dump_response(HttpResponse* res) {
daklowprofile 31:cba9d9dea21a 37 mbedtls_printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str());
daklowprofile 31:cba9d9dea21a 38
daklowprofile 31:cba9d9dea21a 39 mbedtls_printf("Headers:\n");
daklowprofile 31:cba9d9dea21a 40 for (size_t ix = 0; ix < res->get_headers_length(); ix++) {
daklowprofile 31:cba9d9dea21a 41 mbedtls_printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str());
daklowprofile 31:cba9d9dea21a 42 }
daklowprofile 31:cba9d9dea21a 43 mbedtls_printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str());
daklowprofile 31:cba9d9dea21a 44 }
daklowprofile 31:cba9d9dea21a 45
daklowprofile 31:cba9d9dea21a 46 // Spread the message out over 3 different chunks
daklowprofile 31:cba9d9dea21a 47 const char * chunks[] = {
daklowprofile 31:cba9d9dea21a 48 "{\"message\":",
daklowprofile 31:cba9d9dea21a 49 "\"this is an example",
daklowprofile 31:cba9d9dea21a 50 " of chunked encoding\"}"
daklowprofile 31:cba9d9dea21a 51 };
daklowprofile 31:cba9d9dea21a 52
daklowprofile 31:cba9d9dea21a 53 int chunk_ix = 0;
daklowprofile 31:cba9d9dea21a 54
daklowprofile 31:cba9d9dea21a 55 // Callback function, grab the next chunk and return it
daklowprofile 31:cba9d9dea21a 56 const void * get_chunk(size_t* out_size) {
daklowprofile 31:cba9d9dea21a 57 // If you don't have any data left, set out_size to 0 and return a null pointer
daklowprofile 31:cba9d9dea21a 58 if (chunk_ix == (sizeof(chunks) / sizeof(chunks[0]))) {
daklowprofile 31:cba9d9dea21a 59 *out_size = 0;
daklowprofile 31:cba9d9dea21a 60 return NULL;
daklowprofile 31:cba9d9dea21a 61 }
daklowprofile 31:cba9d9dea21a 62 const char *chunk = chunks[chunk_ix];
daklowprofile 31:cba9d9dea21a 63 *out_size = strlen(chunk);
daklowprofile 31:cba9d9dea21a 64 chunk_ix++;
daklowprofile 31:cba9d9dea21a 65
daklowprofile 31:cba9d9dea21a 66 return chunk;
daklowprofile 31:cba9d9dea21a 67 }
daklowprofile 31:cba9d9dea21a 68
daklowprofile 31:cba9d9dea21a 69 int main() {
daklowprofile 31:cba9d9dea21a 70 NetworkInterface* network = easy_connect(true);
daklowprofile 31:cba9d9dea21a 71 if (!network) {
daklowprofile 31:cba9d9dea21a 72 return 1;
daklowprofile 31:cba9d9dea21a 73 }
daklowprofile 31:cba9d9dea21a 74
daklowprofile 31:cba9d9dea21a 75 // POST request to httpbin.org
daklowprofile 31:cba9d9dea21a 76 {
daklowprofile 31:cba9d9dea21a 77 HttpsRequest* post_req = new HttpsRequest(network, SSL_CA_PEM, HTTP_POST, "https://reqres.in/api/users");
daklowprofile 31:cba9d9dea21a 78 post_req->set_debug(true);
daklowprofile 31:cba9d9dea21a 79 post_req->set_header("Content-Type", "application/json");
daklowprofile 31:cba9d9dea21a 80
daklowprofile 31:cba9d9dea21a 81 // If you pass a callback here, the Transfer-Encoding header is automatically set to chunked
daklowprofile 31:cba9d9dea21a 82 HttpResponse* post_res = post_req->send(&get_chunk);
daklowprofile 31:cba9d9dea21a 83 if (!post_res) {
daklowprofile 31:cba9d9dea21a 84 printf("HttpsRequest failed (error code %d)\n", post_req->get_error());
daklowprofile 31:cba9d9dea21a 85 return 1;
daklowprofile 31:cba9d9dea21a 86 }
daklowprofile 31:cba9d9dea21a 87
daklowprofile 31:cba9d9dea21a 88 printf("\n----- HTTPS POST response -----\n");
daklowprofile 31:cba9d9dea21a 89 dump_response(post_res);
daklowprofile 31:cba9d9dea21a 90
daklowprofile 31:cba9d9dea21a 91 delete post_req;
daklowprofile 31:cba9d9dea21a 92 }
daklowprofile 31:cba9d9dea21a 93
daklowprofile 31:cba9d9dea21a 94 wait(osWaitForever);
daklowprofile 31:cba9d9dea21a 95 }
daklowprofile 31:cba9d9dea21a 96
daklowprofile 31:cba9d9dea21a 97 #endif