myapp.c

运行环境是keil.这是一个实现嵌入式TCP_IP的程序,运行在万邦的w78e516上面,网卡芯片采用的是rtl8019

#include "..\uip.h"  //LEON.Z.
#include "myapp.h"


#define NULL (void *)0

#ifdef DEBUG
#include <stdio.h>
#define PRINT(x) printf("%s", x)
#define PRINTLN(x) printf("%s\n", x)
#else /* DEBUG */
#define PRINT(x)
#define PRINTLN(x)
#endif /* DEBUG */

struct myapp_state *hs;

#define APPport 1180

/*-----------------------------------------------------------------------------------*/
void
myapp_init(void)
{
  
  /* Listen to port 1180. */
  uip_listen(APPport);
}
/*-----------------------------------------------------------------------------------*/
void
myapp(void)
{ 
//  u8_t i;
  
  switch(uip_conn->lport) {
    /* This is the web server: */
  case htons(APPport):
    /* Pick out the application state from the uip_conn structure. */
    hs = (struct httpd_state *)(uip_conn->appstate);

    if(uip_connected()) {
      /* first connect, the app do some initialize here */

      //hs->state = HTTP_NOGET;
      //hs->count = 0;
      /* Don't send any data in return; we wait for the remote request
	 instead. */
      uip_send(uip_appdata, 0);
      return;

    } else if(uip_poll()) {
      /* If we are polled ten times, we abort the connection. This is
         because we don't want connections lingering indefinately in
         the system. */
      if(hs->count++ >= 10) {
	    uip_abort();
      }
      return;
    } else if(uip_newdata()) {
      /* we have recieved the request or data, apply the remote now*/
	 
      //--------leon, add the protocal here----, we receive the pc data or 
      //--retquest,  in uip_appdata, length=uip_len;
      //and we process it, place our data in uip_appdata. and set uip_len;
      
      /* Check for GET. */
      if(uip_appdata[0] != 't' ||
	     uip_appdata[1] != 'e' ||
	     uip_appdata[2] != 's' ||
	     uip_appdata[3] != 't') {
	/* If it isn't a GET, we abort the connection. */
  	     uip_abort();
	     return;
      }
	       

   uip_appdata[0]='o';
   uip_appdata[1]='k';

   uip_len=2;       
    }

      if(uip_acked()) {
	  	    uip_close();
	  }
    /* Finally, return to uIP. Our outgoing packet will soon be on its
       way... */
    return;

  default:
    /* Should never happen. */
    uip_abort();
    break;
  }  
}
/*-----------------------------------------------------------------------------------*/