UDP Single Socket, Two Ports

Hi,
I am currently building software for an antenna testing pedestal. I am trying to receive information and send commands through a program for the ACU. The LabVIEW program is supposed to receive information through a slave port by parsing bytes from the received information, and send a new command back.
I am having trouble with the transmission portion. Because of the limitation of the software, if I try to open a socket for both the receive and transmission ports, I get an error saying that the port is already in use. I have come to a conclusion(please tell me if this is correct) that I will need to use a single socket, but use two ports on the same socket. Is this possible? If so, how can I do this?
If this is not possible, how can I work around this?
I have attached the receive/transmit portion of my test program.
Thank you,
Aki
LabVIEW 2011 SP1 Version 11.0.1f1
Windows XP Professional Version 2002 SP3
Attachments:
Compact Range UDP.vi ‏22 KB

First, please take some time to learn how to use data flow and program correctly in LabVIEW. Your program is very typical of someone coming from a text programming background and trying to make LabVIEW look like that. For instance, in one frame (of your many frame structures) you have four copies of the same local variable. Simply branch the wire. Your parallel frame structures will not operate independently. Each must complete a full cycle before you can move on to the next loop iteration. Speaking of frame structures, please do not use stacked frames. Take some time to learn how to use state machines. They are much more flexible. However, most of your code could be written using simple dataflow.
With respect to your UDP question, I assume based on your code that you are connecting to the remote device which is acting like a server. If this is the case you can both read and write over that same connection. (UDP does not actually have connections but when you open a UDP session it can be considered a connection.) Unless you are using different ports, which you are not since you are getting the error, you only need a single UDP open. The reference out of that can be used for both sending anf receiving data.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

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I have to send messages through UDP multicast and unicast from same port. In Labview I tried that it throws error. I heard it is possible by means of Datagram (UDP unicast and multicast) Port Sharing. How can it be achieved in Labview?

I have to send UDP multicast and Unicast messages to a remote port from a single source/local port. I tried by opening UDP unicast and multicast in the same port and got the expected error. I tried by opening a unicast connection and sending unicast messages.After that when multicast messages has to send I closed unicast and opened multicast in the same port.This is not throwing any error. But my requirenment is to comminicate with another application in C ++ which recieves this data, throwing an error of lost connectivity and both the applications are not abled to communicate properly.
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CIT Engineering Netherlands
a division of Test & Measurement Solutions

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Attachments:
twoport.zip ‏1184 KB

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Michael Girdley wrote:
If, you mean the same port on two different IP addresses, then the answer is
yes.
If, you mean two different ports on the same IP address, then the answer is
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Michael Girdley
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fxy <[email protected]> wrote in message
news:8fdk99$t9$[email protected]..
<URGENT QUESTION>
I'd like to know if weblogic can support two ports at the same time.
thank you in advance.
<URGENT QUESTION>

Well, the question was really meant to see if any change was made to WL to support
this, not because I didn't believe Michael Girdley.
P.S., this is something Websphere 4.0 let's you do...In case this encourages someone
to add this support.
"Mike Reiche" <[email protected]> wrote:
>
If you don't believe Michael Girdley, then I don't know why you would
believe anyone
else. I believe the answer is still 'no'.
Why do they 'have to be on different ports'? We block requests by URI
- so just
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Mike
you"Anil Arora" <[email protected]> wrote:
Is it still true that WL 6.0 cannot host multiple (non-secure) HTTPports
on one
server? We need this capability within one JVM to allow one web application
to
be accessed from one port while another through a second port. Forexample,
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Michael Girdley
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Allen Akers <[email protected]> wrote in message
news:[email protected]...
That's not true. WebLogic supports a non-secure and secure listenerport
at the
same time. That was one of the selling points for my organization.
Michael Girdley wrote:
If, you mean the same port on two different IP addresses, then
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answer is
yes.
If, you mean two different ports on the same IP address, then theanswer
is
no.
Thanks,
Michael
Michael Girdley
Product Manager, WebLogic Server & Express
BEA Systems Inc
fxy <[email protected]> wrote in message
news:[email protected]...
<URGENT QUESTION>
I'd like to know if weblogic can support two ports at the same
time.
thank you in advance.
<URGENT QUESTION>

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MPIO Storage Snapshot on Wednesday, 17 April 2013, at 18:31:40.275
Registered DSMs: 2
================
+--------------------------------|-------------------|----|----|----|---|-----+
|DSM Name | Version |PRP | RC | RI |PVP| PVE |
|--------------------------------|-------------------|----|----|----|---|-----|
|Microsoft DSM |006.0002.09200.16384|0120|0003|0001|030| True|
|Intel(R) Storage Controller MPIO|004.0001.00140.0002|0120|0003|0001|030| True|
+--------------------------------|-------------------|----|----|----|---|-----+
Microsoft DSM
=============
No devices controlled by this DSM at this time!
Intel(R) Storage Controller MPIO Driver
=======================================
MPIO Disk4: 02 Paths, Fail Over Only, Explicit Only
SN: 2263015539BAB
Supported Load Balance Policies: FOO RR RRWS LQD
Path ID State SCSI Address Weight
0000000077000001 Standby 000|000|001|004 0
TPG_State: Standby , TPG_Id: 1, TP_Id: 6
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0000000077000000 Active/Optimized 000|000|000|004 0
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0000000077000001 Active/Optimized 000|000|001|003 0
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0000000077000000 Standby 000|000|000|003 0
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Adapter: LSI Adapter, SAS 3000 series, 4-port ... (B|D|F: 004|000|000)
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Supported Load Balance Policies: FOO RR RRWS LQD
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0000000077000001 Active/Optimized 000|000|001|002 0
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0000000077000000 Active/Optimized 000|000|000|000 0
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================================================================================

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