自己组ip包 然后发送 出错

grepkey

我的代码是这样的   我这里用的是原始套接字  为的是组装自己的ip包头  然后发送  程序在运行sendto函数时报错了
sockaddr_in dstaddr;
dstaddr.sin_family = AF_INET; /* Address family: Internet protocols */
dstaddr.sin_port = dst_prt; /* Leave it empty */
dstaddr.sin_addr.s_addr = dst_ip; /* Destination IP */
/* Get a raw socket to send TCP packets */
if ( (rawsocket = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) < 0){
   perror("TCP_RST_send():socket()");
   exit(1);
}
if( setsockopt(rawsocket, IPPROTO_IP, IP_HDRINCL, &one, sizeof(one)) < 0){
   perror("TCP_RST_send():setsockopt()");
   exit(1);
}
if ( sendto(rawsocket, packet, ntohs(ipheader->ip_len), 0,(struct sockaddr *) &dstaddr, sizeof (dstaddr)) < 0){
     return -1;
}