[BitBucket user: Alain Mazy]
[BitBucket date: 2020-06-16.12:41:09]

I’ve tried again to fail a transfer from DicomWeb, we now get plenty of details:

```
I0616 14:39:18.207275 JobsRegistry.cpp:712] New job submitted with priority 0: c6801429-743e-4418-917b-4d1bfee12016
I0616 14:39:18.215273 JobsEngine.cpp:144] Executing job with priority 0 in worker thread 0: c6801429-743e-4418-917b-4d1bfee12016
E0616 14:39:20.442945 HttpClient.cpp:68] Error code 7 in libcurl: Couldn't connect to server
I0616 14:39:20.449741 HttpClient.cpp:970] HTTP status code 0 in 2216 ms after POST request on: http://localhost:20042/dicom-web/studies
E0616 14:39:20.459740 OrthancException.h:87] Error in the network protocol: libCURL error: Couldn't connect to server
E0616 14:39:20.480779 PluginsManager.cpp:197] Exception while invoking plugin service 34: Error in the network protocol
E0616 14:40:06.149150 PluginsManager.cpp:164] Error in a job: Error in the network protocol
I0616 14:40:07.798149 JobsRegistry.cpp:486] Job has completed with failure: c6801429-743e-4418-917b-4d1bfee12016
```

closing the issue..