Akifumi Takahashi / HTTP_SERVER

The library with which to make your mbed a HTTP Server which just reads HTML files in the mbed and sends it to the clients.

Dependents:   httpserversample SIMPLE_WSS

Quote:

This library depends on EthernetInterface class, TCPSocketServer class and TCPSocketConnection class. These classes can be imported at EthernetInterface library. Moreover, the EthernetInterface library depends on the mbed-rtos library, so import it here.

Abstract

This is the library to make a mbed a simple HTTP server. With this library, a mbed can understand only GET requests, and can send clients htm or jpg files as a response.

Handleable Requests:

  • GET

Handleable files:

  • html
  • jpg

Note the length of the Filename

A mbed can handle only 8.3 filename (also called as "short filename" or SFN), such as index.htm (in this case, length of the filename is 5.3).

Sample Code

Running the code below, if your mbed is connected to a network, you can see an IP address of the mbed on your console. (When connecting the mbed to a PC with USB, the baud rate should be 9600)

Hello World

#include "mbed.h"
#include "HTTP_SERVER.h"
int main()
{
    HttpServer httpsvr;
    if(httpsvr.init()){
        if(httpsvr.run() == 0)
            printf("end\r\n");
        else
            printf("error end\r\n");
    }
    return 0;
}

As an example, make a index.htm like below (NOT .html; the reason is referred above) in the mbed, and access to <the IP address>/index.htm with a web browser on your PC or any terminals on the network the mbed is connected to, then you would be able to see the page.

index.htm in mbed

<!DOCTYPE html>
<html>
<head>
<title>mbed http server demo</title>
</head>
<body>
	<h1>Mbed Simple HTTP Server</h1> 
	hello world<br />
	<a href="./index.htm" terget="self">Hyper Link Test</a><br />
</body>
</html>

HTTP_SERVER.h@0:cc483bea4fe3, 2016-02-16 (annotated)

Committer:
aktk
Date:
Tue Feb 16 10:59:31 2016 +0000
Revision:
0:cc483bea4fe3
Child:
9:84aca9965f9f
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Who changed what in which revision?

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aktk 0:cc483bea4fe3 1 //HTTP_SERVER.h
aktk 0:cc483bea4fe3 2 #ifndef HTTP_SERVER_H
aktk 0:cc483bea4fe3 3 #define HTTP_SERVER_H
aktk 0:cc483bea4fe3 4 #include "mbed.h"
aktk 0:cc483bea4fe3 5 #include "EthernetInterface.h"
aktk 0:cc483bea4fe3 6 #include "ResponseMessenger.h"
aktk 0:cc483bea4fe3 7 #include "FileHandler.h"
aktk 0:cc483bea4fe3 8 #include "string.h"
aktk 0:cc483bea4fe3 9 #include <stdlib.h>
aktk 0:cc483bea4fe3 10 using namespace std;
aktk 0:cc483bea4fe3 11
aktk 0:cc483bea4fe3 12 enum PortNum {
aktk 0:cc483bea4fe3 13 TCP_PORT = 80
aktk 0:cc483bea4fe3 14 };
aktk 0:cc483bea4fe3 15
aktk 0:cc483bea4fe3 16 class HttpServer
aktk 0:cc483bea4fe3 17 {
aktk 0:cc483bea4fe3 18 public:
aktk 0:cc483bea4fe3 19 HttpServer();
aktk 0:cc483bea4fe3 20 ~HttpServer();
aktk 0:cc483bea4fe3 21 /**
aktk 0:cc483bea4fe3 22 * HTTP SERVER Initialization.
aktk 0:cc483bea4fe3 23 * This is called in the Constructor.
aktk 0:cc483bea4fe3 24 * You don't have to use but can call this if you have some reasons to init the server.
aktk 0:cc483bea4fe3 25 * @return result of init() as boolean.
aktk 0:cc483bea4fe3 26 * @retval TRUE SACCESS
aktk 0:cc483bea4fe3 27 * @retval FALSE
aktk 0:cc483bea4fe3 28 */
aktk 0:cc483bea4fe3 29 bool init();
aktk 0:cc483bea4fe3 30 /**
aktk 0:cc483bea4fe3 31 * Run the surver service while listening flag is true.
aktk 0:cc483bea4fe3 32 * @return state ending.
aktk 0:cc483bea4fe3 33 * @retval TRUE at error end.
aktk 0:cc483bea4fe3 34 * @retval FALSE at normal end.
aktk 0:cc483bea4fe3 35 */
aktk 0:cc483bea4fe3 36 bool run();
aktk 0:cc483bea4fe3 37
aktk 0:cc483bea4fe3 38 private:
aktk 0:cc483bea4fe3 39 // Handlers
aktk 0:cc483bea4fe3 40 EthernetInterface eth; // Eternet
aktk 0:cc483bea4fe3 41 TCPSocketServer tcpsvr; // TCP server
aktk 0:cc483bea4fe3 42 TCPSocketConnection tcpcon; // TCP server connection clerk
aktk 0:cc483bea4fe3 43 ResponseMessenger msger; // Messenger for a client
aktk 0:cc483bea4fe3 44 FileHandler fhandl; //
aktk 0:cc483bea4fe3 45 // Param
aktk 0:cc483bea4fe3 46 bool keep_alive;
aktk 0:cc483bea4fe3 47 bool listening_flag;
aktk 0:cc483bea4fe3 48 char* req_buf[1024];
aktk 0:cc483bea4fe3 49 };
aktk 0:cc483bea4fe3 50
aktk 0:cc483bea4fe3 51 #endif