Belkin PF31 Specifications download pdf (Page 31)

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Chapter 7: Bluetooth

OBEX FTP over Bluetooth is not very well supported on Linux. The most

popular package, obexftp, still has Bluetooth support in development at the

time of writing. We advise you to check the project’s home page at http://

triq.net/obex.

OBEX PUSH is better supported and is more practical since it is consis-

tently implemented in consumer devices such as cell phones. There are sev-

eral graphical programs available to support OBEX PUSH on Linux, as we

shall see later. First, we look at the command-line tools available to perform

file transfers.

Basic support

OBEX support on Linux is implemented through a project called OpenOBEX.

Any OBEX-related program requires you to have these libraries installed. They

can be obtained and compiled from the project’s home page at http://openobex.

sourceforge.net/ or installed through your Linux system’s package manage-

ment system.

If your Linux distribution is relatively old, be aware that

OpenOBEX might not have been compiled with Bluetooth

enabled. If you are encountering inexplicable errors in start-

ing up OBEX applications, this may well be the case, and

you should contact your Linux distribution vendor.

The OpenOBEX libraries have a companion package called openobex-apps.

The openobex-apps package contains a set of basic test programs that you

can use to get started. They are by no means production quality, but they

enable you to test your setup. We’ll use the

obex_test program to test

receiving and sending files.

To send a file to a remote device, you must first discover the RFCOMM port

the OBEX PUSH support uses, as shown in Example 7-3. Use

sdptool to dis-

cover this, and then run

obex_test. Let’s suppose our remote device has the

address 11:22:33:44:55:66 and uses RFCOMM port 3 for OBEX PUSH.

Here is an imaginary session:

$ obex_test -b 11:22:33:44:55:66 3

> c

> p localfilename remotefilename

This session presents two arguments to the p command: the location of the

file you want to send and the name of the file to use when it reaches the

remote device.

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Belkin PF31 Specifications Page 31