Strange behavior with uri and WebClient lessons in SSIS package

Question

I have a rather strange situation.

I have this very simple package:

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The "get list" task retrieves a data table from an assembly with a single column and a list of URLs that will be launched into the object variable.
The foreach loop goes through the object variable and loads the url in the url string variable

"Run" invokes the url with this code (its 2005, so I'm stuck with VB):

Dim myURI As New Uri("http://" + Dts.Variables("URL").Value.ToString())
Dim myWebClient As New System.Net.WebClient
myWebClient.OpenReadAsync(myURI)

the called URL is internal and just reads the parameters and performs a series of operations that take some time, so I used "OpenReadAsync"

: 4 URL- , 2 . lops 4 , script 4 ( , ), myWebClient.OpenReadAsync(myURI) 4 4 , 2 URL.

, 2 URL-, , URL- . 4 URL- (, 4 ) , , , , URL-.

, VB, , uri WebClient, , Im - . 5 , .

.

+5

Diego 23 '12 15:25

2

+1

Brandon Arnold 04 . '12 20:58

Panagiotis Kanavos · Accepted Answer · 2012-06-05T11:36:54+0000

, , ..NET 2 . , .

, script, , Dispose WebClient. WebClient , , . , .

, OpenReadAsync , , . DownloadXXXAsync, .

DownloadStringAsync DownloadStringAsyncCompleted.

UPDATE:

ServicePointManager.DefaultConnectionLimit , , - AppDomain. SSIS AppDomain , .

, FindServicePoint, ServicePoint :

var myTarget= ServicePointManager.FindServicePoint(new Uri("http://www.google.com"));
myTarget.ConnectionLimit = 10;