University of Plymouth - Stages 1, 2 and 3
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Task671-mbedos-FZ429-TCP-dynamic
Simple TCP/IP Server (dynamic web page)
main.cpp
- Committer:
- noutram
- Date:
- 2019-12-04
- Revision:
- 3:265121e8c2cc
- Parent:
- 2:ecf4c78019ab
- Child:
- 4:094d7d0f9a1f
File content as of revision 3:265121e8c2cc:
#include "mbed.h" #include "EthernetInterface.h" #include "TCPServer.h" #include "TCPSocket.h" #include <iostream> #include <string> #define HTTP_STATUS_LINE "HTTP/1.0 200 OK" #define HTTP_HEADER_FIELDS "Content-Type: text/html; charset=utf-8" #define HTTP_MESSAGE_BODY1 "" \ "<html>" "\r\n" \ " <body style=\"display:flex;text-align:center\">" "\r\n" \ " <div style=\"margin:auto\">" "\r\n" \ " <h1>Hello World</h1>" "\r\n" \ " <p>The LDR value is " #define HTTP_MESSAGE_BODY2 "" \ "</p>" "\r\n" \ " </div>" "\r\n" \ " </body>" "\r\n" \ "</html>" #define HTTP_RESPONSE HTTP_STATUS_LINE "\r\n" \ HTTP_HEADER_FIELDS "\r\n" \ "\r\n" \ HTTP_MESSAGE_BODY "\r\n" #define IP "10.0.0.10" #define NETMASK "255.0.0.0" #define GATEWAY "10.0.0.1" AnalogIn ldr(PA_0); int main() { printf("Basic HTTP server example\n"); //Configure an ethernet connection EthernetInterface eth; eth.set_network(IP, NETMASK, GATEWAY); eth.connect(); printf("The target IP address is '%s'\n", eth.get_ip_address()); //Now setup a web server TCPSocket srv; //TCP/IP Server TCPSocket* clt_sock; //Socket for communication SocketAddress clt_addr; //Address of incoming connection /* Open the server on ethernet stack */ srv.open(ð); /* Bind the HTTP port (TCP 80) to the server */ srv.bind(eth.get_ip_address(), 80); /* Can handle 5 simultaneous connections */ srv.listen(5); while (true) { using namespace std; //Block and wait on an incoming connection clt_sock=srv.accept(); printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port()); //Uses a C++ string to make it easier to concatinate string response; //This is a C string char ldr_str[64]; //Read the LDR value float u = ldr; //Convert to a C String sprintf(ldr_str, "%5.3f", u ); printf("LDR: %5.3f\n\r", u); //Build the C++ string response response = HTTP_MESSAGE_BODY1; response += ldr_str; response += HTTP_MESSAGE_BODY2; //Send static HTML response (as a C string) clt_sock->send(response.c_str(), response.size()+6); clt_sock->close(); wait_us(1000000); } }