main-http-socket-reuse.cpp

00001 #include "select-demo.h"
00002 
00003 #if DEMO == DEMO_HTTP_SOCKET_REUSE
00004 
00005 #include "mbed.h"
00006 #include "easy-connect.h"
00007 #include "http_request.h"
00008 
00009 void dump_response(HttpResponse* res) {
00010     printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str());
00011 
00012     printf("Headers:\n");
00013     for (size_t ix = 0; ix < res->get_headers_length(); ix++) {
00014         printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str());
00015     }
00016     printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str());
00017 }
00018 
00019 int main() {
00020     // Connect to the network (see mbed_app.json for the connectivity method used)
00021     NetworkInterface* network = easy_connect(true);
00022     if (!network) {
00023         printf("Cannot connect to the network, see serial output");
00024         return 1;
00025     }
00026 
00027     // Create a TCP socket
00028     printf("\n----- Setting up TCP connection -----\n");
00029 
00030     TCPSocket* socket = new TCPSocket();
00031     nsapi_error_t open_result = socket->open(network);
00032     if (open_result != 0) {
00033         printf("Opening TCPSocket failed... %d\n", open_result);
00034         return 1;
00035     }
00036 
00037     nsapi_error_t connect_result = socket->connect("httpbin.org", 80);
00038     if (connect_result != 0) {
00039         printf("Connecting over TCPSocket failed... %d\n", connect_result);
00040         return 1;
00041     }
00042 
00043     printf("Connected over TCP to httpbin.org:80\n");
00044 
00045     // Do a GET request to httpbin.org
00046     {
00047         HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418");
00048 
00049         // By default the body is automatically parsed and stored in a string, this is memory heavy.
00050         // To receive chunked response, pass in a callback as third parameter to 'send'.
00051         HttpResponse* get_res = get_req->send();
00052         if (!get_res) {
00053             printf("HttpRequest failed (error code %d)\n", get_req->get_error());
00054             return 1;
00055         }
00056 
00057         printf("\n----- HTTP GET response -----\n");
00058         dump_response(get_res);
00059 
00060         delete get_req;
00061     }
00062 
00063     // POST request to httpbin.org
00064     {
00065         HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://httpbin.org/post");
00066         post_req->set_header("Content-Type", "application/json");
00067 
00068         const char body[] = "{\"hello\":\"world\"}";
00069 
00070         HttpResponse* post_res = post_req->send(body, strlen(body));
00071         if (!post_res) {
00072             printf("HttpRequest failed (error code %d)\n", post_req->get_error());
00073             return 1;
00074         }
00075 
00076         printf("\n----- HTTP POST response -----\n");
00077         dump_response(post_res);
00078 
00079         delete post_req;
00080     }
00081 
00082     delete socket;
00083 
00084     wait(osWaitForever);
00085 }
00086 
00087 #endif