Reem M / Mbed OS http-server-example1

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main.cpp

00001 #include "mbed.h"
00002 #include "easy-connect.h"
00003 #include "http_server.h"
00004 #include "http_response_builder.h"
00005 
00006 
00007 
00008 Serial pc(USBTX,USBRX,9600);
00009 DigitalOut led(LED1);
00010 
00011 // Requests come in here
00012 
00013 void request_handler(ParsedHttpRequest* request, TCPSocket* socket) {
00014 
00015     pc.printf("Request came in: %s %s\n", http_method_str(request->get_method()), request->get_url().c_str());
00016 
00017     if (request->get_method() == HTTP_GET && request->get_url() == "/") {
00018         HttpResponseBuilder builder(200);
00019         builder.set_header("Content-Type", "text/html; charset=utf-8");
00020 
00021         char response[] = "<html><head><title>Hello from mbed</title></head>"
00022             "<body>"
00023                 "<h1>mbed webserver</h1>"
00024                 "<button id=\"toggle\">Toggle LED</button>"
00025                 "<script>document.querySelector('#toggle').onclick = function() {"
00026                     "var x = new XMLHttpRequest(); x.open('POST', '/toggle'); x.send();"
00027                 "}</script>"
00028             "</body></html>";
00029 
00030         builder.send(socket, response, sizeof(response) - 1);
00031         
00032     }
00033     else if (request->get_method() == HTTP_POST && request->get_url() == "/toggle") {
00034         pc.printf("toggle LED called\n");
00035         led = !led;
00036 
00037         HttpResponseBuilder builder(200);
00038         builder.send(socket, NULL, 0);
00039     }
00040     else {
00041         HttpResponseBuilder builder(404);
00042         builder.send(socket, NULL, 0);
00043     }
00044 }
00045 
00046 int main() {
00047    
00048    lcd_printf("Reem");
00049     // Connect to the network (see mbed_app.json for the connectivity method used)
00050     NetworkInterface* network = easy_connect(true);
00051     if (!network) {
00052         pc.printf("Cannot connect to the network, see serial output\n");
00053         return 1;
00054     }
00055 
00056     HttpServer server(network);
00057     nsapi_error_t res = server.start(8080, &request_handler);
00058 
00059     if (res == NSAPI_ERROR_OK) {
00060         pc.printf("Server is listening at http://%s:8080\n", network->get_ip_address());
00061     }
00062     else {
00063         pc.printf("Server could not be started... %d\n", res);
00064     }
00065 
00066 
00067 
00068     wait(osWaitForever);
00069 
00070 
00071 }
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