Bongjun Hur / Mbed OS http-webserver-example

Simple Webserver example for wiznet W5500 (SPI Ethernet chip) mbed OS 5 - HTTP 1.1 and multi-threaded

Dependencies:   W5500Interface easy-connect mbed-http

Fork of http-webserver-example by sandbox

mbed-os-example-http-server

This application demonstrates how to run an HTTP server on an mbed OS 5 device & WIZnet W5500 Ethernet components.

Request parsing is done through [nodejs/http-parser](https://github.com/nodejs/http-parser).

To build

  1. Open ``mbed_app.json`` and change the `network-interface` option to your connectivity method ([more info](https://github.com/ARMmbed/easy-connect)).
  2. Build the project in the online compiler or using mbed CLI.
  3. Flash the project to your development board.
  4. Attach a serial monitor to your board to see the debug messages.

Tested on

But every networking stack that supports the [mbed OS 5 NetworkInterface API](https://docs.mbed.com/docs/mbed-os-api-reference/en/latest/APIs/communication/network_sockets/) should work.

Test Result

source/main.cpp@5:ac9aebd61a31, 2018-08-10 (annotated)

Committer:
Bongjun
Date:
Fri Aug 10 08:52:29 2018 +0000
Revision:
5:ac9aebd61a31
Parent:
2:c8eff436549f 
remove some comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jan Jongboom 0:41f820ea137a 1 #include "mbed.h"
Jan Jongboom 0:41f820ea137a 2 #include "easy-connect.h"
Jan Jongboom 0:41f820ea137a 3 #include "http_server.h"
Jan Jongboom 0:41f820ea137a 4 #include "http_response_builder.h"
Jan Jongboom 0:41f820ea137a 5
Bongjun 2:c8eff436549f 6 //Serial pc(USBTX, USBRX);
Bongjun 2:c8eff436549f 7 //DigitalOut led(D1);
Bongjun 5:ac9aebd61a31 8 //confict with W5500 SPI CS pin, so D1 pin can't use for this example.
Jan Jongboom 0:41f820ea137a 9
Jan Jongboom 0:41f820ea137a 10 // Requests come in here
Jan Jongboom 0:41f820ea137a 11 void request_handler(ParsedHttpRequest* request, TCPSocket* socket) {
Jan Jongboom 0:41f820ea137a 12
Jan Jongboom 0:41f820ea137a 13 printf("Request came in: %s %s\n", http_method_str(request->get_method()), request->get_url().c_str());
Jan Jongboom 0:41f820ea137a 14
Jan Jongboom 0:41f820ea137a 15 if (request->get_method() == HTTP_GET && request->get_url() == "/") {
Jan Jongboom 0:41f820ea137a 16 HttpResponseBuilder builder(200);
Jan Jongboom 0:41f820ea137a 17 builder.set_header("Content-Type", "text/html; charset=utf-8");
Jan Jongboom 0:41f820ea137a 18
Jan Jongboom 0:41f820ea137a 19 char response[] = "<html><head><title>Hello from mbed</title></head>"
Jan Jongboom 0:41f820ea137a 20 "<body>"
Jan Jongboom 0:41f820ea137a 21 "<h1>mbed webserver</h1>"
Jan Jongboom 0:41f820ea137a 22 "<button id=\"toggle\">Toggle LED</button>"
Jan Jongboom 0:41f820ea137a 23 "<script>document.querySelector('#toggle').onclick = function() {"
Jan Jongboom 0:41f820ea137a 24 "var x = new XMLHttpRequest(); x.open('POST', '/toggle'); x.send();"
Jan Jongboom 0:41f820ea137a 25 "}</script>"
Jan Jongboom 0:41f820ea137a 26 "</body></html>";
Jan Jongboom 0:41f820ea137a 27
Jan Jongboom 0:41f820ea137a 28 builder.send(socket, response, sizeof(response) - 1);
Jan Jongboom 0:41f820ea137a 29 }
Jan Jongboom 0:41f820ea137a 30 else if (request->get_method() == HTTP_POST && request->get_url() == "/toggle") {
Jan Jongboom 0:41f820ea137a 31 printf("toggle LED called\n");
Bongjun 2:c8eff436549f 32 //led = !led;
Jan Jongboom 0:41f820ea137a 33 HttpResponseBuilder builder(200);
Jan Jongboom 0:41f820ea137a 34 builder.send(socket, NULL, 0);
Jan Jongboom 0:41f820ea137a 35 }
Jan Jongboom 0:41f820ea137a 36 else {
Jan Jongboom 0:41f820ea137a 37 HttpResponseBuilder builder(404);
Jan Jongboom 0:41f820ea137a 38 builder.send(socket, NULL, 0);
Jan Jongboom 0:41f820ea137a 39 }
Jan Jongboom 0:41f820ea137a 40 }
Jan Jongboom 0:41f820ea137a 41
Jan Jongboom 0:41f820ea137a 42 int main() {
Bongjun 2:c8eff436549f 43 // pc.baud(115200);
Jan Jongboom 0:41f820ea137a 44
Bongjun 2:c8eff436549f 45 // Connect to the network (see mbed_app.json for the connectivity method used)
Bongjun 2:c8eff436549f 46 NetworkInterface* network = easy_connect(true);
Bongjun 2:c8eff436549f 47 if (!network) {
Bongjun 2:c8eff436549f 48 printf("Cannot connect to the network, see serial output\n");
Bongjun 2:c8eff436549f 49 return 1;
Bongjun 2:c8eff436549f 50 }
Bongjun 2:c8eff436549f 51
Bongjun 2:c8eff436549f 52 HttpServer server(network);
Bongjun 2:c8eff436549f 53 nsapi_error_t res = server.start(8080, &request_handler);
Bongjun 2:c8eff436549f 54
Bongjun 2:c8eff436549f 55 if (res == NSAPI_ERROR_OK) {
Bongjun 2:c8eff436549f 56 printf("Server is listening at http://%s:8080\n", network->get_ip_address());
Bongjun 2:c8eff436549f 57 }
Bongjun 2:c8eff436549f 58 else {
Bongjun 2:c8eff436549f 59 printf("Server could not be started... %d\n", res);
Bongjun 2:c8eff436549f 60 }
Bongjun 2:c8eff436549f 61
Bongjun 2:c8eff436549f 62 wait(osWaitForever);
Bongjun 5:ac9aebd61a31 63
Jan Jongboom 0:41f820ea137a 64 }