100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
|
|
#include "lwip/opt.h"
|
|
#include "lwip/arch.h"
|
|
#include "lwip/api.h"
|
|
|
|
#include "httpserver-netconn.h"
|
|
|
|
#if LWIP_NETCONN
|
|
|
|
#ifndef HTTPD_DEBUG
|
|
#define HTTPD_DEBUG LWIP_DBG_OFF
|
|
#endif
|
|
|
|
const static char http_html_hdr[] = "HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n";
|
|
const static char http_index_html[] = "<html><head><title>Congrats!</title></head><body><h1>Welcome to our lwIP HTTP server!</h1><p>This is a small test page, served by httpserver-netconn.</body></html>";
|
|
|
|
/** Serve one HTTP connection accepted in the http thread */
|
|
static void
|
|
http_server_netconn_serve(struct netconn *conn)
|
|
{
|
|
struct netbuf *inbuf;
|
|
char *buf;
|
|
u16_t buflen;
|
|
err_t err;
|
|
|
|
/* Read the data from the port, blocking if nothing yet there.
|
|
We assume the request (the part we care about) is in one netbuf */
|
|
err = netconn_recv(conn, &inbuf);
|
|
|
|
if (err == ERR_OK) {
|
|
netbuf_data(inbuf, (void**)&buf, &buflen);
|
|
|
|
/* Is this an HTTP GET command? (only check the first 5 chars, since
|
|
there are other formats for GET, and we're keeping it very simple )*/
|
|
if (buflen>=5 &&
|
|
buf[0]=='G' &&
|
|
buf[1]=='E' &&
|
|
buf[2]=='T' &&
|
|
buf[3]==' ' &&
|
|
buf[4]=='/' ) {
|
|
|
|
/* Send the HTML header
|
|
* subtract 1 from the size, since we dont send the \0 in the string
|
|
* NETCONN_NOCOPY: our data is const static, so no need to copy it
|
|
*/
|
|
netconn_write(conn, http_html_hdr, sizeof(http_html_hdr)-1, NETCONN_NOCOPY);
|
|
|
|
/* Send our HTML page */
|
|
netconn_write(conn, http_index_html, sizeof(http_index_html)-1, NETCONN_NOCOPY);
|
|
}
|
|
}
|
|
/* Close the connection (server closes in HTTP) */
|
|
netconn_close(conn);
|
|
|
|
/* Delete the buffer (netconn_recv gives us ownership,
|
|
so we have to make sure to deallocate the buffer) */
|
|
netbuf_delete(inbuf);
|
|
}
|
|
|
|
/** The main function, never returns! */
|
|
static void
|
|
http_server_netconn_thread(void *arg)
|
|
{
|
|
struct netconn *conn, *newconn;
|
|
err_t err;
|
|
LWIP_UNUSED_ARG(arg);
|
|
|
|
/* Create a new TCP connection handle */
|
|
conn = netconn_new(NETCONN_TCP);
|
|
LWIP_ERROR("http_server: invalid conn", (conn != NULL), return;);
|
|
|
|
/* Bind to port 80 (HTTP) with default IP address */
|
|
netconn_bind(conn, NULL, 80);
|
|
|
|
/* Put the connection into LISTEN state */
|
|
netconn_listen(conn);
|
|
|
|
do {
|
|
err = netconn_accept(conn, &newconn);
|
|
if (err == ERR_OK) {
|
|
http_server_netconn_serve(newconn);
|
|
netconn_delete(newconn);
|
|
}
|
|
} while(err == ERR_OK);
|
|
LWIP_DEBUGF(HTTPD_DEBUG,
|
|
("http_server_netconn_thread: netconn_accept received error %d, shutting down",
|
|
err));
|
|
netconn_close(conn);
|
|
netconn_delete(conn);
|
|
}
|
|
|
|
/** Initialize the HTTP server (start its thread) */
|
|
void
|
|
http_server_netconn_init()
|
|
{
|
|
sys_thread_new("http_server_netconn", http_server_netconn_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
|
|
}
|
|
|
|
#endif /* LWIP_NETCONN*/
|