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rfcomm(1) [centos man page]

RFCOMM(1)																 RFCOMM(1)

rfcomm - RFCOMM configuration utility SYNOPSIS
rfcomm [ options ] < command > < dev > DESCRIPTION
rfcomm is used to set up, maintain, and inspect the RFCOMM configuration of the Bluetooth subsystem in the Linux kernel. If no command is given, or if the option -a is used, rfcomm prints information about the configured RFCOMM devices. OPTIONS
-h Gives a list of possible commands. -a Prints information about all configured RFCOMM devices. -r Switch TTY into raw mode (doesn't work with "bind"). -f <file> Specify alternate config file. -i <hciX> | <bdaddr> The command is applied to device -A Enable authentication. -E Enable encryption. -S Secure connection. -M Become the master of a piconet. hciX , which must be the name or the address of an installed Bluetooth device. If not specified, the command will be use the first available Bluetooth device. -A Enable authentification -E Enable encryption -S Secure connection -M Become the master of a piconet -L <seconds> Set linger timeout COMMANDS
show <dev> Display the information about the specified device. connect <dev> [bdaddr] [channel] Connect the RFCOMM device to the remote Bluetooth device on the specified channel. If no channel is specified, it will use the chan- nel number 1. If also the Bluetooth address is left out, it tries to read the data from the config file. This command can be termi- nated with the key sequence CTRL-C. listen <dev> [channel] [cmd] Listen on a specified RFCOMM channel for incoming connections. If no channel is specified, it will use the channel number 1, but a channel must be specified before cmd. If cmd is given, it will be executed as soon as a client connects. When the child process ter- minates or the client disconnect, the command will terminate. Occurrences of {} in cmd will be replaced by the name of the device used by the connection. This command can be terminated with the key sequence CTRL-C. watch <dev> [channel] [cmd] Watch is identical to listen except that when the child process terminates or the client disconnect, the command will restart lis- tening with the same parameters. bind <dev> [bdaddr] [channel] This binds the RFCOMM device to a remote Bluetooth device. The command did not establish a connection to the remote device, it only creates the binding. The connection will be established right after an application tries to open the RFCOMM device. If no channel number is specified, it uses the channel number 1. If the Bluetooth address is also left out, it tries to read the data from the config file. If all is specified for the RFCOMM device, then all devices that have bind yes set in the config will be bound. release <dev> This command releases a defined RFCOMM binding. If all is specified for the RFCOMM device, then all bindings will be removed. This command didn't care about the settings in the config file. AUTHOR
Written by Marcel Holtmann <>. APRIL 28, 2002 RFCOMM(1)

Check Out this Related Man Page

RFCOMM_SPPD(1)						    BSD General Commands Manual 					    RFCOMM_SPPD(1)

rfcomm_sppd -- RFCOMM Serial Port Profile daemon SYNOPSIS
rfcomm_sppd [-bhtS] -a address -c channel DESCRIPTION
The rfcomm_sppd utility is a Serial Port Profile daemon. It can operate in two modes: client and server. In client mode, rfcomm_sppd opens RFCOMM connection to the specified address server and channel. Once connection is established, the rfcomm_sppd utility provides access to the server's remote serial port via stdin/stdout or via pts(4) interface if -t option was specified. If the -S option is specified, rfcomm_sppd will operate in server mode and act as RFCOMM server, listening on ANY address and advertising a virtual serial port via the sdpd(8) daemon. If -t options was specified, the server side of the virtual serial port is attached to a pseudo- terminal. Otherwise the virtual serial port is attached to the stdin/stdout. rfcomm_sppd should be run as root in order to communicate with sdpd(8) in this case. The rfcomm_sppd utility opens both master and slave pseudo terminals. This is done to ensure that RFCOMM connection stays open until rfcomm_sppd is terminated. The data received from the master pseudo terminal are sent over the RFCOMM connection. The data received from the RFCOMM connection are written into master pseudo terminal. The application in its turn opens the slave pseudo terminal and operates on it just like it would operate over the standard serial port. The options are as follows: -a address In client mode, this required option specifies the address of the remote RFCOMM server. If this option is specified in server mode, rfcomm_sppd will only accept connections from the Bluetooth device with address address. The address can be specified as BD_ADDR or name. If name was specified then rfcomm_sppd utility will attempt to resolve the name via bt_gethostbyname(3). -b Detach from the controlling terminal, i.e., run in background. -c channel In both client and server mode, this option specifies the RFCOMM channel to connect to or listen on. In server mode, the channel should be a number between 1 and 30. If not specified, rfcomm_sppd will try to bind to ``wildcard'' RFCOMM channel number. The actual RFCOMM channel will be obtained via getsockname(2) call and will be used to register Serial Port service with sdpd(8). In client mode, the channel could either be a number between 1 and 30 or a service name. Supported service names are: DUN (for DialUp Networking service), FAX (for Fax service), LAN (for LAN Access Using PPP service) and SP (for Serial Port service). If channel was not specified then rfcomm_sppd utility will try to obtain RFCOMM channel for Serial Port service via Service Discovery Protocol from the server. -h Display usage message and exit. -S Server mode; see DESCRIPTION. -t Use slave pseudo tty. If not set stdin/stdout will be used. This option is required if -b option was specified. FILES
/dev/pts/[num] slave pseudo terminals EXIT STATUS
The rfcomm_sppd utility exits 0 on success, and >0 if an error occurs. EXAMPLES
rfcomm_sppd -a 00:01:02:03:04:05 -c 1 -t Will start the rfcomm_sppd utility and open RFCOMM connection to the server at 00:01:02:03:04:05 and channel 1. Once the connection has been established, a pts(4) can be used to talk to the remote serial port on the server. rfcomm_sppd prints the name of the pts(4) to use on std- out. SEE ALSO
bluetooth(3), ng_btsocket(4), pts(4), rfcomm_pppd(8), sdpd(8) AUTHORS
Maksim Yevmenkin <> BUGS
Please report if found. BSD
April 21, 2008 BSD
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