Re: TCP/IP over Bluetooth

[Reco <recoverym4n@gmail.com>]

	Hi.

On Fri, 22 Apr 2016 20:27:38 -0700
peter@easthope.ca wrote:

> According to https://en.wikipedia.org/wiki/Bluetooth ,
> Bluetooth was "... originally conceived as a wireless alternative 
> to RS-232 data cables."  Therefore TCP/IP inside PPP on a 
> Bluetooth connection is hypthetically possible.
> 
> Has anyone tried it with a debian system on one end at least?

I have to use the thing on a regular basis. Connection speed is
turtle-slow by today's standards, but it works, and aside from the
bluez package it only requires wvdial one.

A sample implementation is:

# cat /etc/network/if-pre-up.ppp0
/usr/bin/rfcomm connect /dev/rfcomm0 xx:xx:xx:xx:xx:xx &
while [ ! -r /dev/rfcomm0 ]; do
        /bin/echo "Waiting for /dev/rfcomm0 ..."
        /bin/sleep 1
done

# cat /etc/network/if-post-down.ppp0
pkill -9 rfcomm

# grep -A1 ppp0 /etc/network/interfaces
iface ppp0 inet wvdial
    pre-up /etc/network/if-pre-up.ppp0
    metric 1
    post-down /etc/network/if-post-down.ppp0

# cat /etc/wvdial.conf
[Dialer Defaults]
Baud = 460800
Dial Command = ATD
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CGDCONT=1,"IP","my.cellphone.carrier.gateway"
Modem = /dev/rfcomm0
Modem Type = Analog Modem
New PPD = yes
Password = xxx
Phone = *99#
Username = xxx
ISDN = false
Idle Seconds = 300

Reco