如何用原始套接字自定义协议，实现数据包的收发，求大神帮忙。跪谢。

【求助】怎么用原始套接字自定义协议，实现数据包的收发，求大神帮忙。。跪谢。。。。
如题，自己写了个小程序发包，但是sendto的时候老出错
#include "client.h"
#define SERVPORT 0x8808

void sendpack(int, struct sockaddr_ll *);

ne_u8 recvbuf[1024] = {0};
ne_u8 sendbuf[1024] = {0};

int main(int argc, char *argv[])
{
  int sockfd;
  struct sockaddr_ll my_addr;
  struct sockaddr_ll de_addr;
  if (argc <2)
  {
  fprintf(stderr,"please enter the hostname!\n");
  exit(1);
  }

  if ((sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) == -1)
  {
  perror("socket error!");
  exit(1);
  }
  memset(&my_addr,0,sizeof(my_addr));
  my_addr.sll_family = AF_PACKET;
  my_addr.sll_protocol = htons(ETH_P_ALL);
  my_addr.sll_ifindex = 0;
// my_addr.sll_pkttype = PACKET_BROADCAST;
// my_addr.sll_htype =
// my_addr.sin_addr.s_addr = INADDR_ANY;
// bzero(&(my_addr.sin_zero),8);

  if(bind(sockfd, (struct sockaddr * )&my_addr,sizeof(my_addr)) !=0 )
  {
  perror("errno");
  exit(1);
  }
  sendpack(sockfd,&my_addr);
  close(sockfd);
  return 0;
}

void sendpack(int sockfd, struct sockaddr_ll *my_addr)
{
  int head_len = 0;
  bzero(sendbuf , 1024);
  struct ether_header *ether_header;
  struct protocol *optl;
  ne_u8 s_mac[6] = {0x00,0x0c,0x29,0xe4,0x15,0x32};
  ne_u8 d_mac[6] = {0xff,0xff,0xff,0xff,0xff,0xff};

  ether_header = (struct ether_header*)sendbuf;
  ether_header->ether_type = 0x8808;
  memcpy(ether_header->ether_shost, s_mac, 6);
  memcpy(ether_header->ether_dhost, d_mac, 6);

  head_len = sizeof(struct ether_header *) + sizeof(struct protocol *);

  optl = (struct protocol *)(sendbuf + 14);
  memcpy(optl->so_mac, s_mac, 6);
  memcpy(optl->de_mac, d_mac, 6);
  optl->port = SERVPORT;
  optl->flags = 55;
  if (sendto(sockfd, sendbuf, head_len, 0, (struct sockaddr *)my_addr, sizeof(struct sockaddr)) ==-1)
  {
  perror("send error!");
  printf("%d\n",errno);
  exit(1);
  }
/*
  if (send(sockfd, sendbuf, head_len, 0) ==-1 )
  {
  perror("send error!");
  printf("%d\n",errno);
  exit(1);
  }
*/
}
完整代码如上，求帮助，不胜感激！！

------解决方案--------------------
救不了你.
------解决方案--------------------
建议楼主还是去看下套接字编程的吧。
------解决方案--------------------
先把常规协议的编程先搞懂再说吧
------解决方案--------------------

探讨

哥们玩服务器不，玩的话一起啊？引用:
救不了你.

------解决方案--------------------
要封包啊。。。