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ʵսLinux Bluetooth±à³Ì(Áù) L2CAP±à³ÌʵÀý

ÀýÒ»£º·¢ËÍSignaling Packet£º
Signaling CommandÊÇ2¸öBluetoothʵÌåÖ®¼äµÄL2CAP²ãÃüÁî´«Êä¡£ËùÒÔµÃSignaling CommandʹÓÃCID 0x0001.
¶à¸öCommand¿ÉÒÔÔÚÒ»¸öC-frame£¨control frame£©Öз¢ËÍ¡£
 Èç¹ûÒªÖ±½Ó·¢ËÍSignaling Command.ÐèÒª½¨Á¢SOCK_RAWÀàÐ͵ÄL2CAPÁ¬½ÓSocket¡£ÕâÑù²ÅÓлú»á×Ô¼ºÌî³äCommand Code£¬IdentifierµÈ¡£
ÒÔÏÂÊÇÒ»¸ö·¢ËÍsignaling CommandÒÔ¼°½ÓÊÕResponseµÄ¼òµ¥Àý×Ó£º
int main(int argc, char** argv)
{
 int l2_sck = 0;
 int iRel  = 0;
 struct sockaddr_l2 local_l2_addr;
 struct sockaddr_l2 remote_l2_addr;
 char str[24] ={0};
 int len = 0;
 int size = 50;
 char* send_buf;
 char* recv_buf;
 int i = 0;
 int id = 1; //²»ÒªÎª0
 
 send_buf = malloc(L2CAP_CMD_HDR_SIZE + size);
 recv_buf = malloc(L2CAP_CMD_HDR_SIZE + size);
 
 if(argc < 2)
 {
  printf("\n%s <bdaddr>\n", argv[0]);
  exit(0);
 }
 // create l2cap raw socket
 l2_sck = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_L2CAP); //´´½¨L2CAP protocolµÄRAW Packet
 if(l2_sck < 0)
 {
  perror("\nsocket:");
  return -1;
 }
 //bind
 memset(&local_l2_addr, 0, sizeof(struct sockaddr_l2));
 local_l2_addr.l2_family = PF_BLUETOOTH;
 bacpy(&local_l2_addr.l2_bdaddr , BDADDR_ANY);
 iRel = bind(l2_sck, (struct sockaddr*) &local_l2_addr, sizeof(struct sockaddr_l2));
 if(iRel < 0)
 {
  perror("\nbind()");
  exit(0);
 }
 //connect
 memset(&remote_l2_addr, 0 , sizeof(struct sockaddr_l2));
 remote_l2_addr.l2_family = PF_BLUETOOTH;
 //printf("\nConnect to %s\n", argv[1]);
 str2ba(argv[1], &remote_l2_addr.l2_bdaddr);
 iRel = connect(l2_sck, (struct sockaddr*)&remote_l2_addr, sizeof(struct sockaddr_l2));
 if(iRel < 0)
 {
  perror("\nconnect()");
  exit(0);
 }
 //get local bda


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