Best Practice using HttpWebRequest & HttpWebResponse classes in Extensions

João Portela

Staff

Question

Hi,

This week I notice that some of the extensions published in the Community could be incorrectly using classes HttpWebRequest/HttpWebResponse.

There are some known “connection leaks” in the .Net framework, so please remember to close all HttpWebRequest/HttpWebResponse’s after using them to avoid there “connection leaks”.

Here some usage advices/best practices of how to do it:

HttpWebResponse webresponse;
webresponse = (HttpWebResponse)webrequest.GetResponse();
…. webresponse.Close(); or
HttpWebResponse webresponse; using (webresponse = (HttpWebResponse)webrequest.GetResponse()) {
….
}

Explicitly closing the response will force the release of resources and release connection to the pool to be reused (https://msdn2.microsoft.com/en-us/library/system.net.httpwebresponse.close.aspx). This action will also “help” garbage collector to free up unused resources.

If you're developing extensions where you use these classes, please recheck your code.

Regards,

João Portela

29 Feb 2008

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