University of Plymouth - Stages 1, 2 and 3 / Mbed OS Task670-mbedos-FZ429-TCP

Simple TCP/IP Server (static web page_

main.cpp@2:31688a1ac73a, 2019-11-08 (annotated)

Committer:
noutram
Date:
Fri Nov 08 14:19:22 2019 +0000
Revision:
2:31688a1ac73a
Parent:
0:5552cdb52638
Child:
3:c62ab6a06986
Updated for 2019

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:5552cdb52638 1 #include "mbed.h"
noutram 0:5552cdb52638 2 #include "EthernetInterface.h"
noutram 0:5552cdb52638 3 #include "TCPServer.h"
noutram 0:5552cdb52638 4 #include "TCPSocket.h"
noutram 0:5552cdb52638 5
noutram 0:5552cdb52638 6 #define HTTP_STATUS_LINE "HTTP/1.0 200 OK"
noutram 0:5552cdb52638 7 #define HTTP_HEADER_FIELDS "Content-Type: text/html; charset=utf-8"
noutram 0:5552cdb52638 8 #define HTTP_MESSAGE_BODY "" \
noutram 0:5552cdb52638 9 "<html>" "\r\n" \
noutram 0:5552cdb52638 10 " <body style=\"display:flex;text-align:center\">" "\r\n" \
noutram 0:5552cdb52638 11 " <div style=\"margin:auto\">" "\r\n" \
noutram 0:5552cdb52638 12 " <h1>Hello World</h1>" "\r\n" \
noutram 0:5552cdb52638 13 " <p>It works !</p>" "\r\n" \
noutram 0:5552cdb52638 14 " </div>" "\r\n" \
noutram 0:5552cdb52638 15 " </body>" "\r\n" \
noutram 0:5552cdb52638 16 "</html>"
noutram 0:5552cdb52638 17
noutram 0:5552cdb52638 18 #define HTTP_RESPONSE HTTP_STATUS_LINE "\r\n" \
noutram 0:5552cdb52638 19 HTTP_HEADER_FIELDS "\r\n" \
noutram 0:5552cdb52638 20 "\r\n" \
noutram 0:5552cdb52638 21 HTTP_MESSAGE_BODY "\r\n"
noutram 0:5552cdb52638 22
noutram 0:5552cdb52638 23 #define IP "10.0.0.10"
noutram 0:5552cdb52638 24 #define NETMASK "255.0.0.0"
noutram 0:5552cdb52638 25 #define GATEWAY "10.0.0.1"
noutram 0:5552cdb52638 26
noutram 0:5552cdb52638 27
noutram 0:5552cdb52638 28 int main()
noutram 0:5552cdb52638 29 {
noutram 0:5552cdb52638 30 printf("Basic HTTP server example\n");
noutram 0:5552cdb52638 31
noutram 0:5552cdb52638 32 //Configure an ethernet connection
noutram 0:5552cdb52638 33 EthernetInterface eth;
noutram 0:5552cdb52638 34 eth.set_network(IP, NETMASK, GATEWAY);
noutram 0:5552cdb52638 35 eth.connect();
noutram 0:5552cdb52638 36 printf("The target IP address is '%s'\n", eth.get_ip_address());
noutram 0:5552cdb52638 37
noutram 0:5552cdb52638 38 //Now setup a web server
noutram 2:31688a1ac73a 39 TCPSocket srv; //TCP/IP Server
noutram 0:5552cdb52638 40 TCPSocket clt_sock; //Socket for communication
noutram 0:5552cdb52638 41 SocketAddress clt_addr; //Address of incoming connection
noutram 0:5552cdb52638 42
noutram 0:5552cdb52638 43 /* Open the server on ethernet stack */
noutram 0:5552cdb52638 44 srv.open(&eth);
noutram 0:5552cdb52638 45
noutram 0:5552cdb52638 46 /* Bind the HTTP port (TCP 80) to the server */
noutram 0:5552cdb52638 47 srv.bind(eth.get_ip_address(), 80);
noutram 0:5552cdb52638 48
noutram 0:5552cdb52638 49 /* Can handle 5 simultaneous connections */
noutram 0:5552cdb52638 50 srv.listen(5);
noutram 0:5552cdb52638 51
noutram 0:5552cdb52638 52 while (true) {
noutram 0:5552cdb52638 53 //Block and wait on an incoming connection
noutram 2:31688a1ac73a 54 srv.accept();
noutram 0:5552cdb52638 55 printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
noutram 0:5552cdb52638 56
noutram 0:5552cdb52638 57 //Send static HTML response
noutram 0:5552cdb52638 58 clt_sock.send(HTTP_RESPONSE, strlen(HTTP_RESPONSE));
noutram 0:5552cdb52638 59 }
noutram 0:5552cdb52638 60 }