Question

I am trying to get a String of http response (just a JSON object), and sometimes this piece of code waits infinite time in

line = reader.readLine()

May be, the reason of such behavior is bad Internet connection (I use 3G modem), but I need a stable solution to avoid this infinite lock. What can be done here to avoid it?

HttpResponse response = httpClient.execute(httpPost);

InputStream content = null;
JSONObject json_obj;
if (response.getStatusLine().getStatusCode() == 200) {
    HttpEntity entity = response.getEntity();

    try {
        content = entity.getContent();

        BufferedReader reader = new BufferedReader(new InputStreamReader(content, "UTF-8"), 256);
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
    } catch (Exception e) {}
}

Answer 1

You can specify a read timeout:

HttpClient client = new DefaultHttpClient();
client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 30000);

Should set a read timeout to 30 seconds.
Probably, you also want to specify a connection timeout:

client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 30000);