[lwip-users] lwip1.30+ucos2.86 on luminary lm3s8962

[greencity]

Hi all:

There is something wrong with my process. Please help me. Thanks a lot.

I am porting lwip1.30 and ucos2.86 on luminary lm3s8962. The RTOS and stack begin to work now and can ping with each other. So I want to build a simple http server on it. The code below is my http connect task and connect process function. They are written with reference to the httpserver-netconn.c in lwip contrib-1.30.

I use realview MDK3.24 to build the target and use lm link to debug.When the program is running, I find that http server only can connect one time. And when the connect is closed the server send RST package to web browser(MAXTHON). After this I refresh the web browser but the server can not response to this connect request. Why??

 

static void Http_Task(void  *parg) 
{
 extern void http_process(struct netconn *pxNetCon);
 struct netconn *pxHTTPListener, *pxNewConnection;
 
 /* Create a new tcp connection handle */

  pxHTTPListener = netconn_new( NETCONN_TCP );
 netconn_bind(pxHTTPListener, NULL, 80 );
 netconn_listen( pxHTTPListener );

 while(1)
 {
  /* Wait for connection. */
  pxNewConnection=netconn_accept(pxHTTPListener);
  http_process(pxNewConnection);
  netconn_delete(pxNewConnection);
 }
} 

 

extern void
http_process(struct netconn *conn) {
  struct netbuf *inbuf;
  char *buf;
  u16_t buflen;
 
  /* Read the data from the port, blocking if nothing yet there.
   We assume the request (the part we care about) is in one netbuf */
  inbuf = netconn_recv(conn);
 
  if (netconn_err(conn) == ERR_OK) {
    netbuf_data(inbuf, &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);
}