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Thread: [NOT RESOLVED] Send to an Existing Port

  1. Jul 14th, 2002, 05:11 PM #1
    Microbasic
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    [NOT RESOLVED] Send to an Existing Port

    Using winsock (the control - I've never worked with the Winsock APIs), how do I send a message through an existing port opened by another application? How do I listen on one?

    I need to send a packet to a port opened by AIM without having to connect to oscar.aol.com myself.
    Last edited by Microbasic; Jul 14th, 2002 at 07:17 PM.


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  2. Jul 14th, 2002, 07:17 PM #2
    Microbasic
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  3. Jul 14th, 2002, 07:22 PM #3
    nemaroller
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    I don't have an answer Micro, but will help keep this on top....

    The way I remember is, its near impossible, since the OS ties an application to a specific port and forbids access to it if another application tries to access it...

    However, somehow packet sniffers get around this, and I guess that's where you need to Google for ideas...
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  4. Jul 14th, 2002, 07:24 PM #4
    PT Exorcist
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    i think the only way is thru proxys....
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  6. Jul 14th, 2002, 07:48 PM #5
    Microbasic
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    Well, is there a way to make such a packet sniffer?


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  7. Jul 14th, 2002, 09:18 PM #6
    nemaroller
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    Nevermind, it was for Unix, but the basic premise is to put the Ethernet card into 'promiscuous mode'...
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  8. Jul 15th, 2002, 12:42 PM #7
    Microbasic
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    [bump]Still not resolved[/bump]


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  9. Jul 15th, 2002, 07:18 PM #8
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  11. Jan 23rd, 2003, 01:09 PM #9
    phase
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    you could do like aim filter does and just rerout everything..did u figure out how to do it? im trying myself just to listen to find when the profile is updated but i cant find a way
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  12. Jan 23rd, 2003, 02:23 PM #10
    KayJay
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    There is a Packet Sniffer control for VB. I think its called PacketX. Search these boards for my posts on "Packet Sniffer", you will find the link.

    Though, I would not know how U would send data once U have access to the port.

    Also check this out. ethereal

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