c - Sending broadcast in Linux via Sockets -


solved please close question (but not know how :/ bad day)

im trying send broadcast in linux via sockets, going out through both interfaces(ive got active eth0 , eth1, both in different segments), suddelny, going out through first one, eth0

here code:

void sendbroad(char *dstip, char *localip) {     int sock;                         /* socket */     struct sockaddr_in broadcastaddr; /* broadcast address */     int broadcastpermission;          /* socket opt set permission broadcast */     unsigned int localiplen;       /* length of string broadcast */       /* create socket sending/receiving datagrams */     if ((sock = socket(pf_inet, sock_dgram, ipproto_udp)) < 0)         perror("socket() failed");      /* set socket allow broadcast */     broadcastpermission = 1;     if (setsockopt(sock, sol_socket, so_broadcast, (void *) &broadcastpermission,            sizeof(broadcastpermission)) < 0)         perror("setsockopt() failed");      /* construct local address structure */     memset(&broadcastaddr, 0, sizeof(broadcastaddr));   /* 0 out structure */     broadcastaddr.sin_family = af_inet;                 /* internet address family */     broadcastaddr.sin_addr.s_addr = inet_addr(dstip);   /* broadcast ip address */     broadcastaddr.sin_port = htons(broadcastport);      /* broadcast port */      localiplen = strlen(localip);  /* find length of localip */     int j;     (j=0; j<1; j++) //doesnt mean far, not important     {          /* broadcast localip in datagram clients */          if (sendto(sock, localip, localiplen, 0, (struct sockaddr *)                 &broadcastaddr, sizeof(broadcastaddr)) != localiplen)              perror("sendto() sent different number of bytes expected");       } } 

any issue?

thanks in advance!

just had make fix broadcast ports, mixed. code ok


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