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Pause in HTTP POST?  Multiple threads?

Posted on 2013-06-24
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Last Modified: 2013-06-25
I have a Web Request that I kick off with
Dim sendWebRequest As HttpWebRequest = CType(WebRequest.Create(stUrl), HttpWebRequest)

The headers are set up as
sendWebRequest.SendChunked = True
sendWebRequest.Method = "POST"
sendWebRequest.ContentType = "text/plain"
sendWebRequest.KeepAlive = True
sendWebRequest.UserAgent = "CometTest"

My sending posts the xml below to the stUrl (Actually in one string)
<command>
   <cmd>8889990000</cmd>
</command>
<command>
   <cmd>88899900013</cmd>
</command>
<command>
   <cmd>8889990002</cmd>
</command>
<command>
   <cmd>8889990003</cmd>
</command>
<command>
   <cmd>8889990004</cmd>
</command>
etc....

The stUrl receives these commands (which actually means to start monitoring these VOIP phones)
I then get an "Open" response stream that runs in a loop ( While streamResponse.CanRead) and sends xml to me as a phone picks up, ends call, whatever...
WHich I send on to a WCF and which posts to our callData table

Thanks to CodeCruiser's earlier help...Works perfectly

Now I've discovered that even though we have 200 phones...
And technically I can send everything to the VOIP Vendor to monitor...

On THEIR end...it takes a @1/4 second to start the monitor on each.
And the vendor is (now) limiting the "waiting monitors" to a max of 8

Is there a way to put a 3 second pause in this thing?
Can I have 200/8 threads using the same connection?

This is the request post side of it...

Dim encodedData As New ASCIIEncoding()
Dim byteArray As Byte() = encodedData.GetBytes(postData)
sendWebRequest.ContentLength = byteArray.Length

Dim newStream As Stream = sendWebRequest.GetRequestStream()
newStream.Write(byteArray, 0, byteArray.Length)
newStream.Close()

And here is how I'm consuming the response
            ' The response object of 'HttpWebRequest' is assigned to a 'HttpWebResponse' variable. 
            Using myHttpWebResponse As HttpWebResponse = CType(sendWebRequest.GetResponse(), HttpWebResponse)

                ' Displaying the contents of the page to the console 
                Using streamResponse As Stream = myHttpWebResponse.GetResponseStream()

                    'Next Line tricks into staying in Response Stream Loop
                    While streamResponse.CanRead

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Question by:lrbrister
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4 Comments
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 39272720
I guess the limit is on the connection itself so threads won't help. If vendor allows multiple connection then you may be able to send multiple requests with 8 phones being monitored with each request in its own thread. First step though is to confirm what the limit is applied to (could be connection, ip, your account etc).
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Author Comment

by:lrbrister
ID: 39272790
CodeCruiser,
 I'm checking now, but am almost positive its an internal "status" on their side.

In other words, they only allow 7 requests in a "pendingStart" status.

Is it possible to do a "staged" HTTPWebRequest post?
And I'm almost positive I've used the incorrect verbiage and sound like one of the "special" people.

Forgive me Obi-Wan
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LVL 83

Accepted Solution

by:
CodeCruiser earned 500 total points
ID: 39272859
As a test, run two instances of the exe with different xml.
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Author Closing Comment

by:lrbrister
ID: 39274606
Thanks.
It's a status on their side.
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