Fixing The “Invalid use of SingleClientConnManager: connection still allocated” Problem

I came upon this problem because the site I wanted to access had server problems, meaning the website was down. When my code tried to access it again, it gave out this “Invalid use of SingleClientConnManager: connection still allocated” exception message.

My code uses Apache’s HttpClient 3rd party library and I thought at first calling the consumeContent() method of the HttpEntity class did the trick since I never even closed the InputStream when getting a reference to it. It did not.

Luckily, after much surfing I stumbled upon Jason Hudgin’s site where he created a convenience method that avoids this problem.

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  1. 3 Responses to “Fixing The “Invalid use of SingleClientConnManager: connection still allocated” Problem”

  2. HttpEntity entity = response.getEntity();
    EntityUtils.consume(entity);

    By Patrick Chung on Jan 11, 2012

  3. To Patrick:
    I check your solution. I doesn’t work. Problem still appears.

    By Alex on Jan 11, 2012

  4. Excellent!

    By nikolas7_7 on Feb 19, 2013

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