Re: recv list

[Wolfgang <wutz@unterderbruecke.de>]

Hi,

now it is saying 'sendto failed: Machine is not on the network', when I am 
sending a message with id 0x15FFD000

#include <sys/ioctl.h>
#include <net/if.h>
#include <string.h>
#include <linux/can/j1939.h>
#include <linux/can.h>
#include <unistd.h>
#include <sys/socket.h>
#include <stdio.h>
#include <sys/types.h>



int main (void)
{
	int s;
	s = socket(PF_CAN, SOCK_DGRAM, CAN_J1939);
	    
	struct sockaddr_can addr;

    memset(&addr, 0, sizeof(addr));
    addr.can_ifindex = if_nametoindex("can0");
    addr.can_addr.j1939.name = J1939_NO_NAME;    
    addr.can_addr.j1939.addr = 0x00;
    addr.can_addr.j1939.pgn = J1939_NO_PGN;
    addr.can_family = AF_CAN;  
   
   
    if (bind(s, (void *)&addr, sizeof(addr))<0)
    	   		perror ("bind failed");
    	   	else
        		printf("bind of s1 on can0 successful\n");
        	       	
       	
     
    int s2;
	s2 = socket(PF_CAN, SOCK_DGRAM, CAN_J1939);
	
	struct sockaddr_can addr2;	
	   
    memset(&addr2, 0, sizeof(addr2));
    addr2.can_ifindex = if_nametoindex("can1");
    addr2.can_addr.j1939.name = J1939_NO_NAME;    
    addr2.can_addr.j1939.addr = 0x3d;
    addr2.can_addr.j1939.pgn = J1939_NO_PGN;
    addr2.can_family = AF_CAN;     
   
    if (bind(s2, (void *)&addr2, sizeof(addr2))<0)
    	   		perror ("bind2 failed");
        	else
        		printf("bind of s2 on can1 successful\n");
        	
    int ret;
	socklen_t len; 
	struct sockaddr_can src_addr;
	char buf[128];


	while (1) {
		len = sizeof(src_addr);
		ret = recvfrom(s, buf, sizeof(buf), 0, (void *)&src_addr, &len);
		
		
		if (ret < 0)
		perror ("recvfrom failed");
		
		src_addr.can_addr.j1939.addr = J1939_NO_ADDR;

		
			if (sendto(s2, buf, ret, 0, (void *)&src_addr, len) < 0)
				perror("sendto failed");
						
	}

  		 
  return 0;
}