Mohamad Nazrin Napiah / Mbed OS http-example

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Fork of http-example by sandbox

source/main-http-socket-reuse.cpp@12:4c226ca06191, 2017-03-28 (annotated)

Committer:
Jan Jongboom
Date:
Tue Mar 28 14:53:07 2017 +0200
Revision:
12:4c226ca06191
Child:
15:65a49b573ba5
Add socket reuse demo's

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jan Jongboom 12:4c226ca06191 1 #include "select-demo.h"
Jan Jongboom 12:4c226ca06191 2
Jan Jongboom 12:4c226ca06191 3 #if DEMO == DEMO_HTTP_SOCKET_REUSE
Jan Jongboom 12:4c226ca06191 4
Jan Jongboom 12:4c226ca06191 5 #include "mbed.h"
Jan Jongboom 12:4c226ca06191 6 #include "easy-connect.h"
Jan Jongboom 12:4c226ca06191 7 #include "http_request.h"
Jan Jongboom 12:4c226ca06191 8
Jan Jongboom 12:4c226ca06191 9 Serial pc(USBTX, USBRX);
Jan Jongboom 12:4c226ca06191 10
Jan Jongboom 12:4c226ca06191 11 void dump_response(HttpResponse* res) {
Jan Jongboom 12:4c226ca06191 12 printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str());
Jan Jongboom 12:4c226ca06191 13
Jan Jongboom 12:4c226ca06191 14 printf("Headers:\n");
Jan Jongboom 12:4c226ca06191 15 for (size_t ix = 0; ix < res->get_headers_length(); ix++) {
Jan Jongboom 12:4c226ca06191 16 printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str());
Jan Jongboom 12:4c226ca06191 17 }
Jan Jongboom 12:4c226ca06191 18 printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str());
Jan Jongboom 12:4c226ca06191 19 }
Jan Jongboom 12:4c226ca06191 20
Jan Jongboom 12:4c226ca06191 21 int main() {
Jan Jongboom 12:4c226ca06191 22 pc.baud(115200);
Jan Jongboom 12:4c226ca06191 23 // Connect to the network (see mbed_app.json for the connectivity method used)
Jan Jongboom 12:4c226ca06191 24 NetworkInterface *network = easy_connect(true);
Jan Jongboom 12:4c226ca06191 25 if (!network) {
Jan Jongboom 12:4c226ca06191 26 printf("Cannot connect to the network, see serial output");
Jan Jongboom 12:4c226ca06191 27 return 1;
Jan Jongboom 12:4c226ca06191 28 }
Jan Jongboom 12:4c226ca06191 29
Jan Jongboom 12:4c226ca06191 30 // Create a TCP socket
Jan Jongboom 12:4c226ca06191 31 printf("\n----- Setting up TCP connection -----\n");
Jan Jongboom 12:4c226ca06191 32
Jan Jongboom 12:4c226ca06191 33 TCPSocket* socket = new TCPSocket();
Jan Jongboom 12:4c226ca06191 34 nsapi_error_t open_result = socket->open(network);
Jan Jongboom 12:4c226ca06191 35 if (open_result != 0) {
Jan Jongboom 12:4c226ca06191 36 printf("Opening TCPSocket failed... %d\n", open_result);
Jan Jongboom 12:4c226ca06191 37 return 1;
Jan Jongboom 12:4c226ca06191 38 }
Jan Jongboom 12:4c226ca06191 39
Jan Jongboom 12:4c226ca06191 40 nsapi_error_t connect_result = socket->connect("httpbin.org", 80);
Jan Jongboom 12:4c226ca06191 41 if (connect_result != 0) {
Jan Jongboom 12:4c226ca06191 42 printf("Connecting over TCPSocket failed... %d\n", connect_result);
Jan Jongboom 12:4c226ca06191 43 return 1;
Jan Jongboom 12:4c226ca06191 44 }
Jan Jongboom 12:4c226ca06191 45
Jan Jongboom 12:4c226ca06191 46 printf("Connected over TCP to httpbin.org:80\n");
Jan Jongboom 12:4c226ca06191 47
Jan Jongboom 12:4c226ca06191 48 // Do a GET request to httpbin.org
Jan Jongboom 12:4c226ca06191 49 {
Jan Jongboom 12:4c226ca06191 50 HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418");
Jan Jongboom 12:4c226ca06191 51
Jan Jongboom 12:4c226ca06191 52 // By default the body is automatically parsed and stored in a string, this is memory heavy.
Jan Jongboom 12:4c226ca06191 53 // To receive chunked response, pass in a callback as third parameter to 'send'.
Jan Jongboom 12:4c226ca06191 54 HttpResponse* get_res = get_req->send();
Jan Jongboom 12:4c226ca06191 55 if (!get_res) {
Jan Jongboom 12:4c226ca06191 56 printf("HttpRequest failed (error code %d)\n", get_req->get_error());
Jan Jongboom 12:4c226ca06191 57 return 1;
Jan Jongboom 12:4c226ca06191 58 }
Jan Jongboom 12:4c226ca06191 59
Jan Jongboom 12:4c226ca06191 60 printf("\n----- HTTP GET response -----\n");
Jan Jongboom 12:4c226ca06191 61 dump_response(get_res);
Jan Jongboom 12:4c226ca06191 62
Jan Jongboom 12:4c226ca06191 63 delete get_req;
Jan Jongboom 12:4c226ca06191 64 }
Jan Jongboom 12:4c226ca06191 65
Jan Jongboom 12:4c226ca06191 66 // POST request to httpbin.org
Jan Jongboom 12:4c226ca06191 67 {
Jan Jongboom 12:4c226ca06191 68 HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://httpbin.org/post");
Jan Jongboom 12:4c226ca06191 69 post_req->set_header("Content-Type", "application/json");
Jan Jongboom 12:4c226ca06191 70
Jan Jongboom 12:4c226ca06191 71 const char body[] = "{\"hello\":\"world\"}";
Jan Jongboom 12:4c226ca06191 72
Jan Jongboom 12:4c226ca06191 73 HttpResponse* post_res = post_req->send(body, strlen(body));
Jan Jongboom 12:4c226ca06191 74 if (!post_res) {
Jan Jongboom 12:4c226ca06191 75 printf("HttpRequest failed (error code %d)\n", post_req->get_error());
Jan Jongboom 12:4c226ca06191 76 return 1;
Jan Jongboom 12:4c226ca06191 77 }
Jan Jongboom 12:4c226ca06191 78
Jan Jongboom 12:4c226ca06191 79 printf("\n----- HTTP POST response -----\n");
Jan Jongboom 12:4c226ca06191 80 dump_response(post_res);
Jan Jongboom 12:4c226ca06191 81
Jan Jongboom 12:4c226ca06191 82 delete post_req;
Jan Jongboom 12:4c226ca06191 83 }
Jan Jongboom 12:4c226ca06191 84
Jan Jongboom 12:4c226ca06191 85 delete socket;
Jan Jongboom 12:4c226ca06191 86
Jan Jongboom 12:4c226ca06191 87 Thread::wait(osWaitForever);
Jan Jongboom 12:4c226ca06191 88 }
Jan Jongboom 12:4c226ca06191 89
Jan Jongboom 12:4c226ca06191 90 #endif