[BitBucket user: Alain Mazy]
[BitBucket date: 2018-03-07.14:02:57]

Here's some python3 code to reproduce (note: don't configure Orthanc in verbose mode since outputting to stdout might slow down the whole process and hide the problem)

```
import requests
http = requests.Session()
while (True):
    if http.get("http://127.0.0.1:8042/studies").status_code != 200:
        print("error")
```
After 10-20 seconds, you should actually get a 'ConnectionError' exception thrown (and not catched)