simple http request (temperature data) from mbed lpc1768 with application board to thingsboard device/dashboard
Fork of http-example by
source/main.cpp
- Committer:
- daklowprofile
- Date:
- 2018-06-29
- Revision:
- 30:6b0698841e48
File content as of revision 30:6b0698841e48:
#include "select-demo.h" #if DEMO == MAIN #include "mbed.h" #include "easy-connect.h" #include "http_request.h" #include "LM75B.h" LM75B tmp(p28,p27); void dump_response(HttpResponse* res) { printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str()); printf("Headers:\n"); for (size_t ix = 0; ix < res->get_headers_length(); ix++) { printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str()); } printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str()); } int main() { // Connect to the network (see mbed_app.json for the connectivity method used) NetworkInterface* network = easy_connect(true); if (!network) { printf("Cannot connect to the network, see serial output"); return 1; } // Create a TCP socket printf("\n----- Setting up TCP connection -----\n"); while(tmp.read()<=30){ TCPSocket* socket = new TCPSocket(); nsapi_error_t open_result = socket->open(network); if (open_result != 0) { printf("Opening TCPSocket failed... %d\n", open_result); return 1; } nsapi_error_t connect_result = socket->connect("demo.thingsboard.io", 80); if (connect_result != 0) { printf("Connecting over TCPSocket failed... %d\n", connect_result); return 1; } printf("Connected over TCP to demo.thingsboard.io:80\n"); /*/ Do a GET request to httpbin.org { HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418"); // By default the body is automatically parsed and stored in a string, this is memory heavy. // To receive chunked response, pass in a callback as third parameter to 'send'. HttpResponse* get_res = get_req->send(); if (!get_res) { printf("HttpRequest failed (error code %d)\n", get_req->get_error()); return 1; } printf("\n----- HTTP GET response -----\n"); dump_response(get_res); delete get_req; } *//// POST request to httpbin.org { HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://demo.thingsboard.io/api/v1/aq8Xr1qkEzo1ANb4VQHa/telemetry"); post_req->set_header("Content-Type", "application/json"); char body[256]; //body[0] = 0; sprintf(body,"{\"temperature\":%2f, \"active\": false}",tmp.read()); //printf(buffer); //const char body[] = "{\"hello\":\"world\"}"; HttpResponse* post_res = post_req->send(body, strlen(body)); if (!post_res) { printf("HttpRequest failed (error code %d)\n", post_req->get_error()); return 1; } printf("\n----- HTTP POST response -----\n"); dump_response(post_res); delete post_req; } delete socket; wait(5); } } #endif