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package se.leap.openvpn;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.List;
import se.leap.leapclient.R;
public class ProxyDetection {
static SocketAddress detectProxy(VpnProfile vp) {
// Construct a new url with https as protocol
try {
URL url = new URL(String.format("https://%s:%s",vp.mServerName,vp.mServerPort));
Proxy proxy = getFirstProxy(url);
if(proxy==null)
return null;
SocketAddress addr = proxy.address();
if (addr instanceof InetSocketAddress) {
return addr;
}
} catch (MalformedURLException e) {
OpenVPN.logError(R.string.getproxy_error,e.getLocalizedMessage());
} catch (URISyntaxException e) {
OpenVPN.logError(R.string.getproxy_error,e.getLocalizedMessage());
}
return null;
}
static Proxy getFirstProxy(URL url) throws URISyntaxException {
System.setProperty("java.net.useSystemProxies", "true");
List<Proxy> proxylist = ProxySelector.getDefault().select(url.toURI());
if (proxylist != null) {
for (Proxy proxy: proxylist) {
SocketAddress addr = proxy.address();
if (addr != null) {
return proxy;
}
}
}
return null;
}
}
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