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  1. #1
    Registered User
    Join Date
    Nov 2007
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    22

    Mobile to Mobile udp messaging

    Huy

    When i send message from mobile to other mobile, it is not received by that mobile. But when i send message from computer to mobile and vice versa,messages received on both sides. Now what is the problem,i am not understanding. i have done udp hole punching.

    Regards

  2. #2
    Nokia Developer Moderator
    Join Date
    Feb 2006
    Location
    Oslo, Norway
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    28,751

    Re: Mobile to Mobile udp messaging

    What kind of bearer do you use? In case of WLAN it should work. In any other case it usually will not work.

  3. #3
    Registered User
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    Nov 2007
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    Re: Mobile to Mobile udp messaging

    Huy

    i am using packet data. i mean gprs. now what would be the solution.

    Regards

  4. #4
    Nokia Developer Moderator
    Join Date
    Feb 2006
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    Oslo, Norway
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    28,751

    Re: Mobile to Mobile udp messaging

    There are several possible obstacles. Network operators usually assign private IP addresses, and sometimes they block internal routing between private addresses in addition. You can check if the operator offers assigning "normal" IP addresses for a higher fee perhaps.
    I think your PC->mobile UDP packet was a reply to a previous mobile->PC packet, and your PC has a globally unique IP address, which makes the difference.

  5. #5
    Registered User
    Join Date
    Nov 2007
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    22

    Re: Mobile to Mobile udp messaging

    Huy

    My pc is also behind a router.the problem is something else bcoz i have tried it on many pc's.plz let me know the prblem bcoz i have to submit my project on friday.

    regards

  6. #6
    Nokia Developer Moderator
    Join Date
    Feb 2006
    Location
    Oslo, Norway
    Posts
    28,751

    Re: Mobile to Mobile udp messaging

    A router is a router, and NAT (Network Address Translation) is NAT. While NAT can not exist without a router, router can exist without NAT. So if your PC can be accessed from "outside", it has either a fully public IP, or at least some port-forwarding has been configured on the router. I would vote for the first one (public IP), since you would have probably heard about these things if the second one (port-forwarding) would be involved.

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