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 Serial pc(USBTX, USBRX);
00010 
00011 void dump_response(HttpResponse* res) {
00012     printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str());
00013 
00014     printf("Headers:\n");
00015     for (size_t ix = 0; ix < res->get_headers_length(); ix++) {
00016         printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str());
00017     }
00018     printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str());
00019 }
00020 
00021 int main() {
00022     pc.baud(115200);
00023     // Connect to the network (see mbed_app.json for the connectivity method used)
00024     NetworkInterface *network = easy_connect(true);
00025     if (!network) {
00026         printf("Cannot connect to the network, see serial output");
00027         return 1;
00028     }
00029 
00030     // Create a TCP socket
00031     printf("\n----- Setting up TCP connection -----\n");
00032 
00033     TCPSocket* socket = new TCPSocket();
00034     nsapi_error_t open_result = socket->open(network);
00035     if (open_result != 0) {
00036         printf("Opening TCPSocket failed... %d\n", open_result);
00037         return 1;
00038     }
00039 
00040     nsapi_error_t connect_result = socket->connect("httpbin.org", 80);
00041     if (connect_result != 0) {
00042         printf("Connecting over TCPSocket failed... %d\n", connect_result);
00043         return 1;
00044     }
00045 
00046     printf("Connected over TCP to httpbin.org:80\n");
00047 
00048     // Do a GET request to httpbin.org
00049     {
00050         HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418");
00051 
00052         // By default the body is automatically parsed and stored in a string, this is memory heavy.
00053         // To receive chunked response, pass in a callback as third parameter to 'send'.
00054         HttpResponse* get_res = get_req->send();
00055         if (!get_res) {
00056             printf("HttpRequest failed (error code %d)\n", get_req->get_error());
00057             return 1;
00058         }
00059 
00060         printf("\n----- HTTP GET response -----\n");
00061         dump_response(get_res);
00062 
00063         delete get_req;
00064     }
00065 
00066     // POST request to httpbin.org
00067     {
00068         HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://httpbin.org/post");
00069         post_req->set_header("Content-Type", "application/json");
00070 
00071         const char body[] = "{\"hello\":\"world\"}";
00072 
00073         HttpResponse* post_res = post_req->send(body, strlen(body));
00074         if (!post_res) {
00075             printf("HttpRequest failed (error code %d)\n", post_req->get_error());
00076             return 1;
00077         }
00078 
00079         printf("\n----- HTTP POST response -----\n");
00080         dump_response(post_res);
00081 
00082         delete post_req;
00083     }
00084 
00085     delete socket;
00086 
00087     Thread::wait(osWaitForever);
00088 }
00089 
00090 #endif