/*
 *   BlueZ example code to build an rfcomm client.
 *     This code just creates a socket and connects
 *       to a remote bluetooth device and sends a string.
 *         Programmed by Bastian Ballmann
 *           http://www.geektown.de
 *             Compile with gcc -lbluetooth <executable> <source>
 *             */

#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h> 
#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
#include <bluetooth/hci.h>
#include <unistd.h>
#include <bluetooth/hci_lib.h>

int main(int argc, char *argv[])
{
	int sock, bytes_read, bt_channel=1;
	struct sockaddr_rc laddr, raddr;
	struct hci_dev_info di;
	char bt_addr[]="98:D3:31:FD:14:BC";
	if(argc < 3)
	{
		printf("%s <btaddr> <channel>\n", argv[0]);
		exit(0);
	}
	if(hci_devinfo(0, &di) < 0) 
	{
		perror("HCI device info failed");
	        exit(1);
	}
	printf("Local device %s\n", batostr(&di.bdaddr));

	laddr.rc_family = AF_BLUETOOTH;
	laddr.rc_bdaddr = di.bdaddr;
	laddr.rc_channel = 0;
        raddr.rc_family = AF_BLUETOOTH;
        str2ba(argv[1],&raddr.rc_bdaddr);
        raddr.rc_channel = atoi(argv[2]);  
	if( (sock = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0)
	{
	        perror("socket");
	}

	if(bind(sock, (struct sockaddr *)&laddr, sizeof(laddr)) < 0)
	{
		perror("bind");
	        exit(1);
	}
	printf("Remote device %s\n", argv[1]);
        if(connect(sock, (struct sockaddr *)&raddr, sizeof(raddr)) < 0)
	{
		perror("connect");
		exit(1);
	}
	  
	printf("Connected.\nRecieving data\n");
	//read data from the client
while(1)
{	
	char buf[1024]={0};
	bytes_read = read(sock, buf, sizeof(buf));
	if( bytes_read > 0 ) {
	printf("%s\n", buf);
	}                  
	
}	
	printf("Disconnect.\n");
	close(sock);
	return 0;
}