You can use wifi direct or use phonenet - content centric networking! On May 10, 2012 10:30 AM, "devin kelly" <[email protected]> wrote:
> > > On Thu, May 10, 2012 at 12:35 PM, Robert Greenwalt > <[email protected]>wrote: > >> >> >> On Thu, May 10, 2012 at 9:23 AM, Devin <[email protected]> wrote: >> >>> >>> >>> On Thursday, May 10, 2012 11:08:20 AM UTC-4, Robert Greenwalt wrote: >>>> >>>> Could you use wifi? They will both be given addresses via dhcp and >>>> will be able to see each other. Finding the other guy is a problem, but >>>> you're going to have that in any situation. >>> >>> Finding the other guy or finding you, whatever works :) He's the only >>> other person I've found searching around that's had the same problem. >>> >> >> You might be able to use a service discovery protocol like bonjour for >> this. >> >> >>> >>> >>> I think usb tether uses unroutable addresses and considers the two links >>>> as separate networks. wifi treats them as on the same network. >>>> >>> That's fine I plan on putting each phone on a different subnet and >>> routing between them (for now at least). I'd like to have pairs of >>> addresses like this >>> >>> PC Phone >>> 192.168.1.1, 192.168.1.2 >>> 192.168.2.1, 192.168.2.2 >>> 192.168.3.1, 192.168.3.2 >>> 192.168.4.1, 192.168.4.2 >>> 192.168.5.1, 192.168.5.2 >>> etc >>> >>> In a tethering situation the phone is the dhcp server and the PC >> contacts us for an ip address. >> > > That architecture doesn't really work for me for obvious reasons. > Although it makes total sense for the common use case (one phone, one pc > tethered together) since you don't have to assume that the PC is running a > DHCP server. > > >> The addresses used are hardcoded in the tethering code and you won't be >> able to change it without rebuilding and flashing devices. >> > > Not necessarily true, I use commands like the one below to change the > phones IP. > > adb -s myphoneserial shell 'echo 1 > /sys/class/usb_composite/rndis/enable' > adb -s myphoneserial shell 'ip route add myphoneaddress dev usb0; ip link > set usb0 up' > > for each phone, it works just like I want it to, like in the table I made > earlier. I do a few other things (like PC side setup and ip addr del > 192.168.42.129 dev usb0) to set up the network but those two lines > (especially the first one) are key for me. > > > >> It could be moved into a user visible setting but the extra complexity in >> settings and the percentage of users who would like it just didn't lead us >> down that path. >> >> > > That makes sense though I think hardcoding anything is, in general, bad > practice. I think you (you meaning Google) should add this functionality > in, I think you're going to see a lot more requests like mine in the next > year or so. It doesn't even have to be in the Settings menu on the phones > IMO, maybe just a config file somewhere. Basically, I'd like to be able to > change the default IP address without having to rebuild anything. > > >> Each phone has a usb0 interface, the PC has interfaces usb0, usb1, usb2, >>> usb3, usb4, etc. I plan on making a network of many ( >10, < 100) phones, >>> eventually I'll have more than PC too. >>> >>> Most users also appreciate the convenience of wireless when using phones >>>> also.. don't tie them down! >>>> >>> >>> Not me! :) I specifically want to make a usb network of devices. >>> >> >> lol.. to each their own.. >> > > heh, I'm not crazy I swear. > > >> >>> >>> One more question: it seems that Android phones really like >>> 192.168.42.129 as their address when they're put in tethering mode. I >>> grepped the entire FS on my phone for this string and it seems that this >>> address is hard coded and can't be changed without rebuilding some part of >>> Android, is this right? I believe I found the address in a dex file >>> somewhere under /cache. I'm really sure how those dex files are created >>> (run time, build time, something else??) >>> >>> As I said above these addresses are baked into java code and can't >> really be altered without making a new image. I don't know about the >> problem you might face trying to patch the dex files. >> >> >>> R >>>> >>>> On Wed, May 9, 2012 at 7:57 AM, Devin wrote: >>>> >>>>> John-Marc, >>>>> >>>>> I'm trying to do the same thing and I'm running into the same problem, >>>>> any updates? >>>>> >>>>> Thanks, >>>>> Devin >>>>> >>>>> On Thursday, February 2, 2012 1:45:04 PM UTC-5, John-Marc Desmarais >>>>> wrote: >>>>>> >>>>>> Hi, >>>>>> >>>>>> Does anyone know of a method to tether two phones via USB so that one >>>>>> phone can communicate with the other using an intermediate PC? >>>>>> >>>>>> Or, a method to change the default gateway given when tethering on one >>>>>> of the phones from 192.168.42.129 to something else. >>>>>> >>>>>> It seems that if I connect two android phones to the PC both are given >>>>>> the same gateway address, it is possible to send/receive data from one >>>>>> phone to the other? is there an address on the other side of the >>>>>> gateway address that can be used? Can I configure the address on one >>>>>> of the phones so that the gateway addresses are unique? >>>>>> >>>>>> Thanks, >>>>>> John-Marc Desmarais >>>>>> >>>>>> >>>>> >>> On Thursday, May 10, 2012 11:08:20 AM UTC-4, Robert Greenwalt wrote: >>> >>>> Could you use wifi? They will both be given addresses via dhcp and >>>> will be able to see each other. Finding the other guy is a problem, but >>>> you're going to have that in any situation. >>>> >>>> I think usb tether uses unroutable addresses and considers the two >>>> links as separate networks. wifi treats them as on the same network. >>>> >>>> Most users also appreciate the convenience of wireless when using >>>> phones also.. don't tie them down! >>>> >>>> R >>>> >>>> On Wed, May 9, 2012 at 7:57 AM, Devin wrote: >>>> >>>> John-Marc, >>>>> >>>>> I'm trying to do the same thing and I'm running into the same problem, >>>>> any updates? >>>>> >>>>> Thanks, >>>>> Devin >>>>> >>>>> On Thursday, February 2, 2012 1:45:04 PM UTC-5, John-Marc Desmarais >>>>> wrote: >>>>>> >>>>>> Hi, >>>>>> >>>>>> Does anyone know of a method to tether two phones via USB so that one >>>>>> phone can communicate with the other using an intermediate PC? >>>>>> >>>>>> Or, a method to change the default gateway given when tethering on one >>>>>> of the phones from 192.168.42.129 to something else. >>>>>> >>>>>> It seems that if I connect two android phones to the PC both are given >>>>>> the same gateway address, it is possible to send/receive data from one >>>>>> phone to the other? is there an address on the other side of the >>>>>> gateway address that can be used? Can I configure the address on one >>>>>> of the phones so that the gateway addresses are unique? >>>>>> >>>>>> Thanks, >>>>>> John-Marc Desmarais >>>>>> >>>>>> -- >>>>> >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Android Developers" group. >>> To post to this group, send email to [email protected] >>> To unsubscribe from this group, send email to >>> [email protected] >>> For more options, visit this group at >>> http://groups.google.com/group/android-developers?hl=en >>> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > > > -- > http://alum.wpi.edu/~dkelly/ > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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