Re: [Bluez-users] Problem developing bluetooth program

[manojt ambe <mp_tambe@yahoo.com>]

Are you sure channel 40 exists on your device. Try
sdptool browse <bdaddr> or sdptool records command to
find out.
Also i think try following to fill in sockaddr_rc. It
may remove some unwanted characters.

  char *bdaddr_str;
  bdaddr_t bdaddr;
  struct sockaddr_rc addr;
  int channel=3D40;

  bdaddr_str =3D "00:11:67:39:05:0F";
  str2ba(bdaddr_str, &bdaddr);

  memset(&addr, 0, sizeof(addr));
  addr.rc_family =3D AF_BLUETOOTH;
  bacpy(&addr.rc_bdaddr, bdaddr);
  addr.rc_channel =3D channel;

thanks,
Manoj

--- Mate Soos <msoos@freemail.hu> wrote:

> Hi!
> =

> I have been having problems developing a bluetooth
> program of mine. The
> problem, simply put: I open an RFCOMM socket with
> socket(), bind(),
> connect(), and whatever I do, the connect() will
> fail with Invalid
> Argument. I have now made this *extremely simple*
> program, and I am
> having the same damn problem:
> =

> #include <bluetooth/bluetooth.h>
> #include <bluetooth/rfcomm.h>
> #include <iostream>
> #include <errno.h>
> #include <string.h>
> #include <sys/socket.h>
> =

> int main() {
>     int s;
>     int channel=3D40;
>     char addr[40],addr2[40];
>     strcpy(addr,"00:11:67:39:05:0F");
>     strcpy(addr2,"00:11:67:39:36:BB");
> =

> =

>     std::cerr << "RfcommSocket::connectToHost from "
> << addr2 << " to
> addr: "<< addr << "," << channel << std::endl;
>     sockaddr_rc rem_addr, loc_addr;
> =

>     if( (s =3D ::socket(PF_BLUETOOTH, SOCK_STREAM,
> BTPROTO_RFCOMM)) < 0 ) {
>         std::cerr << "Can't create socket" <<
> strerror(errno) << errno
> << std::endl;
>         return -1;
>     }
> =

>     memset(&loc_addr, 0, sizeof(loc_addr));
>     loc_addr.rc_family =3D AF_BLUETOOTH;
>     str2ba(addr2,&loc_addr.rc_bdaddr);
>     if (bind(s, (struct sockaddr *) &loc_addr,
> sizeof(loc_addr)) < 0 ) {
>         std::cerr  << "Can't bind socket"<< =

> strerror(errno) << errno <<
> std::endl;
>         return -1;
>     }
> =

>     memset(&rem_addr, 0, sizeof(rem_addr));
>     rem_addr.rc_family =3D AF_BLUETOOTH;
>     str2ba(addr,&rem_addr.rc_bdaddr);
>     rem_addr.rc_channel =3D channel;
>     if(::connect(s, (struct sockaddr *)&rem_addr,
> sizeof(rem_addr)) < 0 ){
>             std::cerr << "Can't connect." <<
> strerror(errno) << errno <<
> std::endl;
>             close(s);
>             return -1;
>     }
>     std::cerr << "Connected." << std::endl;
> return 0;
> }
> =

> Output of program:
> =

> RfcommSocket::connectToHost from 00:11:67:39:36:BB
> to addr:
> 00:11:67:39:05:0F,40
> Can't connect.Invalid argument22
> =

> Output of hciconf -a:
> =

> hci0:   Type: USB
>         BD Address: 00:11:67:39:36:BB ACL MTU: 678:8
> SCO MTU: 48:10
>         UP RUNNING PSCAN ISCAN INQUIRY
>         RX bytes:418 acl:0 sco:0 events:22 errors:0
>         TX bytes:339 acl:0 sco:0 commands:22
> errors:0
>         Features: 0xbf 0xfe 0x8d 0x78 0x08 0x18 0x00
> 0x00
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2
> HV3
>         Link policy:
>         Link mode: SLAVE ACCEPT
>         Name: 'masodik'
>         Class: 0x3e0100
>         Service Classes: Networking, Rendering,
> Capturing
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.2 (0x2) HCI Rev: 0x1fe LMP Ver:
> 1.2 (0x2) LMP Subver:
> 0x1fe
>         Manufacturer: Integrated System Solution
> Corp. (57)
> =

> hci1:   Type: USB
>         BD Address: 00:11:67:39:05:0F ACL MTU: 678:8
> SCO MTU: 48:10
>         UP RUNNING PSCAN ISCAN
>         RX bytes:13012 acl:110 sco:0 events:356
> errors:0
>         TX bytes:5061 acl:110 sco:0 commands:102
> errors:0
>         Features: 0xbf 0xfe 0x8d 0x78 0x08 0x18 0x00
> 0x00
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2
> HV3
>         Link policy:
>         Link mode: SLAVE ACCEPT
>         Name: 'elso'
>         Class: 0x3e0100
>         Service Classes: Networking, Rendering,
> Capturing
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.2 (0x2) HCI Rev: 0x1fe LMP Ver:
> 1.2 (0x2) LMP Subver:
> 0x1fe
>         Manufacturer: Integrated System Solution
> Corp. (57)
> =

> =

> I have *really* read through all the revelant
> details, I have been
> reading the libbluetooth sourcecode nonstop(!), I
> have copy-pasted
> several examples, no luck. It always gives me this
> stupid error, and I
> am totally fed up with it. I have been getting it
> for the past 1.5
> weeks, and I work 4 hours per day on this. Any
> ideas?
> =

> I really appreciate all help,
> =

> M=E1t=E9 So=F3s
> =

>
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