news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
> If I do this:
>        Dim receiver As New UdpClient()
> Then the documentation says the system will pick a port. How can I
> extract the chosen port number from receiver?
> Bill
>

"Miro" <miron***@golden.net> wrote in message
news:%23CWWtbo1GHA.4796@TK2MSFTNGP03.phx.gbl...
> Bill,
>
> This is a great example:
> http://www.codeproject.com/vb/net/UDP_Send_Receive.asp
>
> I used it...but basically you do this:
>
> 'in my case i made it a public var
> Public SocketNO As Integer = 1234   ' where 1234 is your socket no u want
> Public RemoteIpEndPoint As New _
> System.Net.IPEndPoint(System.Net.IPAddress.Any, SocketNO)
>
> 'then the sub i had as a receiver
> Public Sub Receive_Application_Parameters()
>        Dim receiveBytes As [Byte]() =
> receivingUdpClient.Receive(RemoteIpEndPoint)
>
>       ... more code
>
> End Sub
>
>
> <swartzbill2***@yahoo.com> wrote in message
> news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
>> If I do this:
>>        Dim receiver As New UdpClient()
>> Then the documentation says the system will pick a port. How can I
>> extract the chosen port number from receiver?
>> Bill
>>
>
>

> One more thing Bill,
>
> Dont forget to close the Receiving UPD client before you close the
> hread.  - i dont think the example link shows it.
> Otherwise what happens is the Application still remains running for a while
> even after
> you close the form.
> So what I did is on the "close" of the form I added this code.
>
>             'Close the Socket - which should force the close of the open
> thread listener
>             'Without this the thread could still remain open
>             receivingUdpClient.Close()
>             'Abort the thread - This doesnt always work alone - need to
> close socket as well.
>             ThreadReceive.Abort()
>
> If you want my mini snippet of code i created to send and recieve strings
> between an exe, lemi know.
> Ill just paste it all here.
>
> Miro
>
>
> "Miro" <miron***@golden.net> wrote in message
> news:%23CWWtbo1GHA.4796@TK2MSFTNGP03.phx.gbl...
> > Bill,
> >
> > This is a great example:
> > http://www.codeproject.com/vb/net/UDP_Send_Receive.asp
> >
> > I used it...but basically you do this:
> >
> > 'in my case i made it a public var
> > Public SocketNO As Integer = 1234   ' where 1234 is your socket no u want
> > Public RemoteIpEndPoint As New _
> > System.Net.IPEndPoint(System.Net.IPAddress.Any, SocketNO)
> >
> > 'then the sub i had as a receiver
> > Public Sub Receive_Application_Parameters()
> >        Dim receiveBytes As [Byte]() =
> > receivingUdpClient.Receive(RemoteIpEndPoint)
> >
> >       ... more code
> >
> > End Sub
> >
> >
> > <swartzbill2***@yahoo.com> wrote in message
> > news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
> >> If I do this:
> >>        Dim receiver As New UdpClient()
> >> Then the documentation says the system will pick a port. How can I
> >> extract the chosen port number from receiver?
> >> Bill
> >>
> >
> >

news:1158083535.664044.226520@i42g2000cwa.googlegroups.com...
> Interesting, but it doesn't answer my question. If the UdpClient ctor
> picks a free port number, how can I find out which port number?
> Bill
>
> Miro wrote:
>> One more thing Bill,
>>
>> Dont forget to close the Receiving UPD client before you close the
>> hread.  - i dont think the example link shows it.
>> Otherwise what happens is the Application still remains running for a
>> while
>> even after
>> you close the form.
>> So what I did is on the "close" of the form I added this code.
>>
>>             'Close the Socket - which should force the close of the open
>> thread listener
>>             'Without this the thread could still remain open
>>             receivingUdpClient.Close()
>>             'Abort the thread - This doesnt always work alone - need to
>> close socket as well.
>>             ThreadReceive.Abort()
>>
>> If you want my mini snippet of code i created to send and recieve strings
>> between an exe, lemi know.
>> Ill just paste it all here.
>>
>> Miro
>>
>>
>> "Miro" <miron***@golden.net> wrote in message
>> news:%23CWWtbo1GHA.4796@TK2MSFTNGP03.phx.gbl...
>> > Bill,
>> >
>> > This is a great example:
>> > http://www.codeproject.com/vb/net/UDP_Send_Receive.asp
>> >
>> > I used it...but basically you do this:
>> >
>> > 'in my case i made it a public var
>> > Public SocketNO As Integer = 1234   ' where 1234 is your socket no u
>> > want
>> > Public RemoteIpEndPoint As New _
>> > System.Net.IPEndPoint(System.Net.IPAddress.Any, SocketNO)
>> >
>> > 'then the sub i had as a receiver
>> > Public Sub Receive_Application_Parameters()
>> >        Dim receiveBytes As [Byte]() =
>> > receivingUdpClient.Receive(RemoteIpEndPoint)
>> >
>> >       ... more code
>> >
>> > End Sub
>> >
>> >
>> > <swartzbill2***@yahoo.com> wrote in message
>> > news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
>> >> If I do this:
>> >>        Dim receiver As New UdpClient()
>> >> Then the documentation says the system will pick a port. How can I
>> >> extract the chosen port number from receiver?
>> >> Bill
>> >>
>> >
>> >
>

"Miro" <miron***@golden.net> wrote in message
news:OucxQfp1GHA.4388@TK2MSFTNGP03.phx.gbl...
> Sorry, I misread the question.
> I read it as you were trying to figure out how to assign the Port.
>
> My bad,
> But....
>
> I was under the impression you "Have To" and always should specify a port.
> Even if you create an array of ports to use and randomly go thru them.
> Otherwise Firewalls will catch and wont let thru a "random port" that you
> try to create.
>
> Ive taken a look at all my examples I had when I tried the UPD socket, and
> all of them had
> a port specified.
>
> Im a VB.net newbie and you have now stumped me.
> Hopefully someone else reads this and helps us both out now.
>
> Any reason though you do not want to specify a socket?
>
> M.
>
>
>
> <swartzbill2***@yahoo.com> wrote in message
> news:1158083535.664044.226520@i42g2000cwa.googlegroups.com...
>> Interesting, but it doesn't answer my question. If the UdpClient ctor
>> picks a free port number, how can I find out which port number?
>> Bill
>>
>> Miro wrote:
>>> One more thing Bill,
>>>
>>> Dont forget to close the Receiving UPD client before you close the
>>> hread.  - i dont think the example link shows it.
>>> Otherwise what happens is the Application still remains running for a
>>> while
>>> even after
>>> you close the form.
>>> So what I did is on the "close" of the form I added this code.
>>>
>>>             'Close the Socket - which should force the close of the open
>>> thread listener
>>>             'Without this the thread could still remain open
>>>             receivingUdpClient.Close()
>>>             'Abort the thread - This doesnt always work alone - need to
>>> close socket as well.
>>>             ThreadReceive.Abort()
>>>
>>> If you want my mini snippet of code i created to send and recieve
>>> strings
>>> between an exe, lemi know.
>>> Ill just paste it all here.
>>>
>>> Miro
>>>
>>>
>>> "Miro" <miron***@golden.net> wrote in message
>>> news:%23CWWtbo1GHA.4796@TK2MSFTNGP03.phx.gbl...
>>> > Bill,
>>> >
>>> > This is a great example:
>>> > http://www.codeproject.com/vb/net/UDP_Send_Receive.asp
>>> >
>>> > I used it...but basically you do this:
>>> >
>>> > 'in my case i made it a public var
>>> > Public SocketNO As Integer = 1234   ' where 1234 is your socket no u
>>> > want
>>> > Public RemoteIpEndPoint As New _
>>> > System.Net.IPEndPoint(System.Net.IPAddress.Any, SocketNO)
>>> >
>>> > 'then the sub i had as a receiver
>>> > Public Sub Receive_Application_Parameters()
>>> >        Dim receiveBytes As [Byte]() =
>>> > receivingUdpClient.Receive(RemoteIpEndPoint)
>>> >
>>> >       ... more code
>>> >
>>> > End Sub
>>> >
>>> >
>>> > <swartzbill2***@yahoo.com> wrote in message
>>> > news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
>>> >> If I do this:
>>> >>        Dim receiver As New UdpClient()
>>> >> Then the documentation says the system will pick a port. How can I
>>> >> extract the chosen port number from receiver?
>>> >> Bill
>>> >>
>>> >
>>> >
>>
>
>

> Who mentioned firewalls - itt could just as easily be for communication
> between 2processs on the same machine.
>
> Because this end is the will be sending the packet, you don't really care
> which port it uses. You only have to know which port to send it to!
>
> If you want to know which port the OS has assigned then you can get from
>
>   UdpClient.Client.LocalEndPoint
>
> Therre is a caveat that this property returns an EndPoint object and you
> have to cast it as IPEndPoint object before you can get the port, e.g.:
>
>   Console.WriteLine(CType(UdpClient.Client.LocalEndPoint, IPEndPoint).Port)
>
>
>
> "Miro" <miron***@golden.net> wrote in message
> news:OucxQfp1GHA.4388@TK2MSFTNGP03.phx.gbl...
> > Sorry, I misread the question.
> > I read it as you were trying to figure out how to assign the Port.
> >
> > My bad,
> > But....
> >
> > I was under the impression you "Have To" and always should specify a port.
> > Even if you create an array of ports to use and randomly go thru them.
> > Otherwise Firewalls will catch and wont let thru a "random port" that you
> > try to create.
> >
> > Ive taken a look at all my examples I had when I tried the UPD socket, and
> > all of them had
> > a port specified.
> >
> > Im a VB.net newbie and you have now stumped me.
> > Hopefully someone else reads this and helps us both out now.
> >
> > Any reason though you do not want to specify a socket?
> >
> > M.
> >
> >
> >
> > <swartzbill2***@yahoo.com> wrote in message
> > news:1158083535.664044.226520@i42g2000cwa.googlegroups.com...
> >> Interesting, but it doesn't answer my question. If the UdpClient ctor
> >> picks a free port number, how can I find out which port number?
> >> Bill
> >>
> >> Miro wrote:
> >>> One more thing Bill,
> >>>
> >>> Dont forget to close the Receiving UPD client before you close the
> >>> hread.  - i dont think the example link shows it.
> >>> Otherwise what happens is the Application still remains running for a
> >>> while
> >>> even after
> >>> you close the form.
> >>> So what I did is on the "close" of the form I added this code.
> >>>
> >>>             'Close the Socket - which should force the close of the open
> >>> thread listener
> >>>             'Without this the thread could still remain open
> >>>             receivingUdpClient.Close()
> >>>             'Abort the thread - This doesnt always work alone - need to
> >>> close socket as well.
> >>>             ThreadReceive.Abort()
> >>>
> >>> If you want my mini snippet of code i created to send and recieve
> >>> strings
> >>> between an exe, lemi know.
> >>> Ill just paste it all here.
> >>>
> >>> Miro
> >>>
> >>>
> >>> "Miro" <miron***@golden.net> wrote in message
> >>> news:%23CWWtbo1GHA.4796@TK2MSFTNGP03.phx.gbl...
> >>> > Bill,
> >>> >
> >>> > This is a great example:
> >>> > http://www.codeproject.com/vb/net/UDP_Send_Receive.asp
> >>> >
> >>> > I used it...but basically you do this:
> >>> >
> >>> > 'in my case i made it a public var
> >>> > Public SocketNO As Integer = 1234   ' where 1234 is your socket no u
> >>> > want
> >>> > Public RemoteIpEndPoint As New _
> >>> > System.Net.IPEndPoint(System.Net.IPAddress.Any, SocketNO)
> >>> >
> >>> > 'then the sub i had as a receiver
> >>> > Public Sub Receive_Application_Parameters()
> >>> >        Dim receiveBytes As [Byte]() =
> >>> > receivingUdpClient.Receive(RemoteIpEndPoint)
> >>> >
> >>> >       ... more code
> >>> >
> >>> > End Sub
> >>> >
> >>> >
> >>> > <swartzbill2***@yahoo.com> wrote in message
> >>> > news:1158076259.251382.93480@h48g2000cwc.googlegroups.com...
> >>> >> If I do this:
> >>> >>        Dim receiver As New UdpClient()
> >>> >> Then the documentation says the system will pick a port. How can I
> >>> >> extract the chosen port number from receiver?
> >>> >> Bill
> >>> >>
> >>> >
> >>> >
> >>
> >
> >