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Thread: Winsock SendData Problems

  1. Jul 6th, 2000, 07:46 PM #1
    SteveCRM
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    Code:
    Winsock1.RemoteIP = "127.0.0.1"
Winsock1.RemotePort = 1000
Winsock1.Connect

Dim MyMessage as String
MyMessage = "Hello, My Name Is Steve"
Winsock1.SendData MyMessage
    I get an error on the last line of that code. Why?
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  2. Jul 6th, 2000, 08:30 PM #2
    SteveCRM
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    By the way, ive tried
    Winsock1.SendData (MyMessage)
    and I still got the error.
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  3. Jul 6th, 2000, 09:40 PM #3
    noone
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    It looks like you are connecting to yourself, do you have a server program runnign to listen on that port? Sorry if I sound insulting.
    "People who think they know everything are a great annoyance to those of us who do."
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  4. Jul 7th, 2000, 08:32 AM #4
    SteveCRM
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    No, that form that that code goes into listens to 1001, the server form sends from 1001 and listens to 1000. I asked about how many ports before. Since 1 - 1024 are reserved for http and ftp, do you think the internet is screwing me up and giving me these problems? Maybe I should make the ports lke 2000, and 2001?
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  6. Jul 7th, 2000, 11:02 AM #5
    Clunietp
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    are you using TCP or UDP?
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  7. Jul 7th, 2000, 11:25 AM #6
    SteveCRM
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    Every winsock control uses TCP
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  8. Jul 7th, 2000, 03:30 PM #7
    noone
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    I may be reading your post wrong but it sounds like you've got the way TCP works a bit mixed up.
    When you say:
    Winsock1.RemoteIP = "127.0.0.1"
    Winsock1.RemotePort = 1000
    Winsock1.Connect1

    There has to already be a server program listening to port 1000 on your machine, otherwise no connection will be established and thus you cant send any data.
    "People who think they know everything are a great annoyance to those of us who do."
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  9. Jul 7th, 2000, 04:35 PM #8
    SteveCRM
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    Sorry, this is my first winsock program. What is the different between TCP and UDT?
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  11. Jul 7th, 2000, 05:59 PM #9
    noone
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    The main difference between TCP and UDP is that TCP is connection oriented where UDP isnt. TCP is also much more reliable than UDP. But UDP has a much lower overhead for use then TCP.
    This link might help you out with using the control:
    http://www.vbsquare.com/internet/comms/
    "People who think they know everything are a great annoyance to those of us who do."
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  12. Jul 7th, 2000, 09:08 PM #10
    SteveCRM
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    Thanks noone! That was the perfect tutorial! Just what I needed!
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  13. Jul 8th, 2000, 06:37 PM #11
    arachnid
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    I would put the SendData command in the Winsock_Connect event. If you send the data before Winsock connects, you'll get an error.
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  14. Jul 8th, 2000, 07:39 PM #12
    SteveCRM
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    No its connected. The start button (where the senddata is) is dissabled until connected.
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  15. Jul 9th, 2000, 03:26 PM #13
    FirePoweR
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    What error are you getting?
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  16. Jul 9th, 2000, 03:28 PM #14
    SteveCRM
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    Hold on, for some reason its working......thanks
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