Python Request et Android HttpURLConnection équivalent

Bonjour,

J'essaye de porter sur Android une application Python de télécommande de télé Panasonic:
Android version:
https://github.com/GreenSnakeLinux/Panasonic
Python version:
https://github.com/florianholzapfel/panasonic-viera

Mais j'ai une erreur code 400 (Bad request) sur HttpURLConnection
Il doit y avoir des différences avec Python mais je ne sais pas lesquels, peut-être coté header
Voici un extrait du code Python et ma version Android:

Python:

Code:

1
2
3
4
5
6
7
8
9
10
11
headers = {
    'Host': '{}:{}'.format(self._host, self._port),
    'Content-Length': len(soap_body),
    'Content-Type': 'text/xml; charset=utf-8',
    'SOAPAction': '"urn:{}#{}"'.format(urn, action),
}
 
url = 'http://{}:{}/{}'.format(self._host, self._port, url)
 
req = Request(url, soap_body, headers)
res = urlopen(req, timeout=5).read()

Android:

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setDoOutput(true);
urlConnection.setConnectTimeout(3000);
urlConnection.setReadTimeout(5000);
 
urlConnection.setRequestProperty("Host", _host + ":" + _port);
urlConnection.setRequestProperty("Content-Length", Integer.toString(soap_body.length()));
urlConnection.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
urlConnection.setRequestProperty("SOAPAction", "\"urn:" + urn + "#" + action + "\"");
 
urlConnection.setChunkedStreamingMode(0);
OutputStream send = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(send, "UTF-8"));
writer.write(soap_body);
writer.flush();
writer.close();
send.close();
int responseCode = urlConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK)
    server_response = readStream(urlConnection.getInputStream());

Merci de votre aide