I was never able to receive udp packets from my server onto my phone that's connected a 3G network. I concluded that this is not allowed when using a non LAN connection. Phone to phone TCP works from what I've heard, but frankly I don't see the advantages unless your game REALLY needs it.
What works for me is of course having all players communicate via a common server and try to have the latency as low as possible. There was a thread about this where I gave my two cents and experience. I use a combination of perl, erlang/rabbitmq, and java. You can find the thread here: http://groups.google.com/group/android-developers/browse_thread/thread/496d03e91ec26294/c4614fd68dabaf31?show_docid=c4614fd68dabaf31&pli=1 http://groups.google.com/group/android-developers/browse_thread/thread/33235221c82baae7 Miguel. On Thu, Jul 1, 2010 at 9:40 AM, HeHe <cnm...@gmail.com> wrote: > i would suggest that you try udp with your app because, against the > same well-designed nat, often a very good tcp "hole punch" technique > has a much higher failure rate than a fair udp one. > > On Jul 1, 8:44 am, WuffIT Tech <wuffi...@gmail.com> wrote: >> I understand that the IP is subject to change but that is not my >> concern. If a connection is dropped, I can always send the other >> phone my IP address and reconnect. I have come to the conclusion that >> there is not a way to do this without actually using a third party >> server. My question now is how should I implement this server. Any >> good server examples out there that is similar to what I need? My >> overall objective is to have a server that will route a message from >> one phone to another like an IM program. >> >> On Jun 15, 5:47 am, Matthew Powers <mtpow...@gmail.com> wrote: >> >> >> >> > I would worry about your IP address changing as you move in and out of >> > different networks, your IP address is not constant >> >> > On Thu, Jun 10, 2010 at 2:40 PM, WuffIT Tech <wuffi...@gmail.com> wrote: >> > > Hi, >> >> > > I am new to this forum and I would like to throw out this question and >> > > hopefully someone can point me in the right direction. I am developing >> > > an Android application and I would like to setup a tcp/ip type of >> > > connection between two Android phones using the 3G/Edge network. My >> > > test version will establish a connection if I have both phones on a >> > > lan using wifi but when I use T-Mobile's network a connection is not >> > > established. Could this issue be a port or ip address? Thanks in >> > > advance. >> >> > > -- >> > > You received this message because you are subscribed to the Google >> > > Groups "Android Developers" group. >> > > To post to this group, send email to android-developers@googlegroups.com >> > > To unsubscribe from this group, send email to >> > > android-developers+unsubscr...@googlegroups.com<android-developers%2Bunsubs >> > > cr...@googlegroups.com> >> > > 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 android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- http://developingthedream.blogspot.com/, http://diastrofunk.com, http://www.youtube.com/user/revoltingx, ~Isaiah 55:8-9 -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
