l2cap-server-page80.c

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/l2cap.h>


int main(){

  struct sockaddr_l2 loc_addr =  { 0 }, rem_addr = { 0 };
  char buf[1024] = { 0 };
  int s, client, bytes_read;
  unsigned int opt = sizeof(rem_addr);
  
  //allocate socket
  s = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);

  //bind socket to port 0x1001 of the first available bluetooth adapter.
  loc_addr.l2_family = AF_BLUETOOTH;
  loc_addr.l2_bdaddr = *BDADDR_ANY;
  loc_addr.l2_psm = htobs(0x1001);
  
  bind(s, ( struct sockaddr*)&loc_addr, sizeof(loc_addr));
  
  //put socket into listening mode.
  listen(s,1);
  
  //accept one connection
  client = accept (s, (struct sockaddr*)&rem_addr, &opt);
  
  ba2str(&rem_addr.l2_bdaddr, buf);
  fprintf(stderr, "accepted connection from %s\n", buf);
  
  //read data from client
  memset(buf, 0, sizeof(buf));
  bytes_read = recv(client, buf, sizeof(buf), 0);
  if(bytes_read > 0){
    printf("received [%s]\n", buf);
  }

  //close connection
  close(client);
  close(s);
  
  return 0;

}