Re: [Bluez-devel] connect fail : Operation now in progress

["Aveek Audhya" <aveek@rebaca.com>]

[-- Attachment #1.1: Type: text/plain, Size: 5537 bytes --]

Hi Nocera,
      Thanks for your reply. What I have seen is that my socket's fd is by
default blocking, every time it returns -1 after waiting for sometime. If I
set it as non-blocking then it returns -1 immediately.  
      I have set up a watcher with select() and getsockopt() call. 
It's like that ....
 
s = socket(AF_BLUETOOTH, SOCK_STREAM/*SOCK_SEQPACKET*/, BTPROTO_RFCOMM);
 
remote_addr.rc_family = AF_BLUETOOTH; // specifies the addressing family of
the socket
remote_addr.rc_channel = (uint8_t)4; // port no to connect to
str2ba(dest, &remote_addr.rc_bdaddr); // address to connect to
 
status = connect(s, (struct sockaddr*)&remote_addr, sizeof(struct
sockaddr_rc));
 
if(status < 0)
      {
            if(errno == EINPROGRESS)
            {
                  printf("EINPROGRESS : %s\n",strerror(errno));
                  do
                  {
                        timeout.tv_sec = 25;
                        timeout.tv_usec = 0;
                        FD_ZERO(&wr);
                        FD_ZERO(&rd);     
                        FD_ZERO(&exceptfds);
 
                        FD_SET(s,&wr);
                        FD_SET(s,&rd);
                        FD_SET(s,&exceptfds);
 
                        if((status =
select(s+1,&rd,&wr,&exceptfds,&timeout)) >0 )
                        {
                              //struct protoent *result;
                              len = sizeof(int);
                              //while((result = getprotoent()) != NULL)
                              //printf("name = %s, protocol =
%d\n",result->p_name,result->p_proto); 
 
                              
                  if(getsockopt(s,SOL_RFCOMM,SO_ERROR,(void*)&valopt,&len) <
0)
                              {
                                    printf("Error in getsockopt() %d -
%s\n",errno,strerror(errno));
                                    _exit(0);
                              }
                        
                              if(valopt) // check the value returned
                              {     
                                    printf("Error in delayed connection() %d
- %s\n",valopt,strerror(valopt));
                                    _exit(0);
                              }
                              printf("before break\n");
                              break;
                        }
                        else if(status < 0 && errno != EINTR)
                        {
                              printf("Error connecting %d - %s\n",errno,
strerror(errno));
                              _exit(0);
                        }
                        else
                        {
                              printf("errno = %d\n",errno);
                              perror("Timeout in select(). exiting... ");
                              _exit(0);
                        }
                  }while(1); /**/
            }
            else
            {
                  printf("errno = %d\n",errno);
                  perror("Error in connect. exiting... ");
                  _exit(0);
            }
      }
 
But for SOL_RFCOMM in getsockopt() I get an error message at run time ..
Error in getsockopt() 92 - Protocol not available ..... although SOL_RFCOMM
is defined in '/usr/include/Bluetooth/bluetooth.h'. Is it the right way to
implement a watcher on a socket fd ? 
 
One thing I forgot to mention that after making connect() call, my mobile
phone ask for 'accept connection request', and after pressing 'yes'
connect() returns -1 with error value 'Operation now in progress'.    
 
Unfortunately I couldn't find 'manager.c' in 'bluez-utils-3.9/serial/'. The
folder doesn't contain any .c file except Makefile, Makefile.am and
Makefile.in. 'manager.c' is present only in 'bluez-utils-3.9/daemon' folder,
but there is no 'rfcomm_connect()' implementation. Probably we are using
different utils version.
Thanks again for your time.
 
 
-----Original Message-----
From: Bastien Nocera [mailto:hadess@hadess.net] 
Sent: Thursday, May 31, 2007 8:38 PM
To: BlueZ development
Cc: bluez-users@lists.sourceforge.net
Subject: Re: [Bluez-devel] connect fail : Operation now in progress
 
On Thu, 2007-05-31 at 16:44 +0530, Aveek Audhya wrote:
> Hi,
> 
>             I am trying to communicate with a J2ME application running
> on my mobile phone(Nokia 6600) using a client program running on a
> Linux machine (FC6). The 'sdptool browse' reports that the J2ME
> application is listening on channel 4. The J2ME application is using
> btspp protocol whereas my client side application is using RFCOMM. But
> when I run the client application, the 'connect' system-call fails
> (returns -1) with error value "Operation now in progress". I am using
> BlueZ protocol stack.
> 
> What can be the probable reason for this kind of behavior? Any
> suggestion is appreciated.
 
You probably made the socket's fd non-blocking. Either make it blocking,
or setup a watcher on the fd to wait for the link to be created.
 
See rfcomm_connect() in bluez-utils/serial/manager.c
 
-- 
Bastien Nocera <hadess@hadess.net> 
 
 
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel

[-- Attachment #1.2: Type: text/html, Size: 37564 bytes --]

[-- Attachment #2: Type: text/plain, Size: 286 bytes --]

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel