Morgan Du / Mbed OS http-webserver-example

Webserver example for Nuvoton NuMaker boards and mbed OS 5.15 - HTTP 1.1 and multi-threaded.

Dependencies:   mbed-http

For Mbed OS 6, please use the NuMaker-simple-httpd example.

This application demonstrates how to run an HTTP server on an mbed OS 5 device. It is derived from http-webserver-example Request parsing is done through nodejs/http-parser.

Fixed for Mbed OS 5.15 or later

Tested on

NuMaker IoT-M487 with Ethernet NuMaker PFM-M487 with Ethernet

source/main.cpp@2:ff1a293c4df3, 2020-06-29 (annotated)

Committer:
morgandu
Date:
Mon Jun 29 08:17:16 2020 +0000
Revision:
2:ff1a293c4df3
Parent:
0:41f820ea137a 
Webserver example for mbed OS 5 - HTTP 1.1 and multi-threaded; Fix for mbed OS 5.15 and clean unnecessary libraries; Add fixed IP address option; Test on Nuvoton NuMaker boards.

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 "http_server.h"
Jan Jongboom 0:41f820ea137a 3 #include "http_response_builder.h"
Jan Jongboom 0:41f820ea137a 4
morgandu 2:ff1a293c4df3 5 #define USE_FIXED_IP 1 // 1 for fixed IP, 0 for DHCP
morgandu 2:ff1a293c4df3 6
Jan Jongboom 0:41f820ea137a 7 DigitalOut led(LED1);
Jan Jongboom 0:41f820ea137a 8
Jan Jongboom 0:41f820ea137a 9 // Requests come in here
Jan Jongboom 0:41f820ea137a 10 void request_handler(ParsedHttpRequest* request, TCPSocket* socket) {
Jan Jongboom 0:41f820ea137a 11
Jan Jongboom 0:41f820ea137a 12 printf("Request came in: %s %s\n", http_method_str(request->get_method()), request->get_url().c_str());
Jan Jongboom 0:41f820ea137a 13
Jan Jongboom 0:41f820ea137a 14 if (request->get_method() == HTTP_GET && request->get_url() == "/") {
Jan Jongboom 0:41f820ea137a 15 HttpResponseBuilder builder(200);
Jan Jongboom 0:41f820ea137a 16 builder.set_header("Content-Type", "text/html; charset=utf-8");
Jan Jongboom 0:41f820ea137a 17
Jan Jongboom 0:41f820ea137a 18 char response[] = "<html><head><title>Hello from mbed</title></head>"
Jan Jongboom 0:41f820ea137a 19 "<body>"
Jan Jongboom 0:41f820ea137a 20 "<h1>mbed webserver</h1>"
Jan Jongboom 0:41f820ea137a 21 "<button id=\"toggle\">Toggle LED</button>"
Jan Jongboom 0:41f820ea137a 22 "<script>document.querySelector('#toggle').onclick = function() {"
Jan Jongboom 0:41f820ea137a 23 "var x = new XMLHttpRequest(); x.open('POST', '/toggle'); x.send();"
Jan Jongboom 0:41f820ea137a 24 "}</script>"
Jan Jongboom 0:41f820ea137a 25 "</body></html>";
Jan Jongboom 0:41f820ea137a 26
Jan Jongboom 0:41f820ea137a 27 builder.send(socket, response, sizeof(response) - 1);
Jan Jongboom 0:41f820ea137a 28 }
Jan Jongboom 0:41f820ea137a 29 else if (request->get_method() == HTTP_POST && request->get_url() == "/toggle") {
Jan Jongboom 0:41f820ea137a 30 printf("toggle LED called\n");
Jan Jongboom 0:41f820ea137a 31 led = !led;
Jan Jongboom 0:41f820ea137a 32
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() {
Jan Jongboom 0:41f820ea137a 43
Jan Jongboom 0:41f820ea137a 44 // Connect to the network (see mbed_app.json for the connectivity method used)
morgandu 2:ff1a293c4df3 45 NetworkInterface *network = NetworkInterface::get_default_instance();
Jan Jongboom 0:41f820ea137a 46 if (!network) {
Jan Jongboom 0:41f820ea137a 47 printf("Cannot connect to the network, see serial output\n");
Jan Jongboom 0:41f820ea137a 48 return 1;
Jan Jongboom 0:41f820ea137a 49 }
Jan Jongboom 0:41f820ea137a 50
morgandu 2:ff1a293c4df3 51 #if USE_FIXED_IP
morgandu 2:ff1a293c4df3 52 // This fixed IP address is convenient to test with Windows PC
morgandu 2:ff1a293c4df3 53 SocketAddress ip_addr("169.254.108.2");
morgandu 2:ff1a293c4df3 54 SocketAddress ip_mask("255.255.0.0");
morgandu 2:ff1a293c4df3 55 SocketAddress ip_gwaddr("169.254.108.1");
morgandu 2:ff1a293c4df3 56 network->set_network(ip_addr, ip_mask, ip_gwaddr);
morgandu 2:ff1a293c4df3 57 #endif
morgandu 2:ff1a293c4df3 58
morgandu 2:ff1a293c4df3 59 network->connect();
morgandu 2:ff1a293c4df3 60
Jan Jongboom 0:41f820ea137a 61 HttpServer server(network);
morgandu 2:ff1a293c4df3 62 nsapi_error_t res = server.start(80, &request_handler);
Jan Jongboom 0:41f820ea137a 63
Jan Jongboom 0:41f820ea137a 64 if (res == NSAPI_ERROR_OK) {
morgandu 2:ff1a293c4df3 65 SocketAddress ip_addr;
morgandu 2:ff1a293c4df3 66 network->get_ip_address(&ip_addr);
morgandu 2:ff1a293c4df3 67 printf("Server is listening at http://%s\n", ip_addr.get_ip_address());
Jan Jongboom 0:41f820ea137a 68 }
Jan Jongboom 0:41f820ea137a 69 else {
Jan Jongboom 0:41f820ea137a 70 printf("Server could not be started... %d\n", res);
Jan Jongboom 0:41f820ea137a 71 }
Jan Jongboom 0:41f820ea137a 72
morgandu 2:ff1a293c4df3 73 while(1) ThisThread::sleep_for(1000000);
Jan Jongboom 0:41f820ea137a 74 }