public RelayCookie resolve(String serverID, String id) throws IOException {
if (!Util.isQuickConnectId(serverID)) {
throw new IllegalArgumentException("serverID isn't a Quick Connect ID");
}
RelayManager relayManager = (RelayManager) RelayHandler.getDefault();
RelayCookie cookie = relayManager.get(serverID);
if (cookie == null) {
cookie = new RelayCookie.Builder().serverID(serverID).id(id).build();
relayManager.put(serverID, cookie);
}
HttpUrl serverUrl = HttpUrl.parse("http://global.quickconnect.to/Serv.php");
ServerInfoJson infoJson = getServerInfo(serverUrl, serverID, id);
// ping DSM directly
HttpUrl resolvedUrl = pingDSM(infoJson);
if (resolvedUrl != null) {
cookie = cookie.newBuilder().resolvedUrl(resolvedUrl).build();
return cookie;
}
// ping DSM through tunnel
resolvedUrl = pingTunnel(infoJson.service);
if (resolvedUrl != null) {
cookie = cookie.newBuilder().resolvedUrl(resolvedUrl).build();
return cookie;
}
// request tunnel
infoJson = requestTunnel(infoJson, serverID, id);
if (infoJson != null) {
resolvedUrl =
requestUrl
.newBuilder()
.host(infoJson.service.relay_ip)
.port(infoJson.service.relay_port)
.build();
cookie = cookie.newBuilder().resolvedUrl(resolvedUrl).build();
return cookie;
}
throw new IOException("No valid url resolved");
}
public ServerInfoJson requestTunnel(ServerInfoJson infoJson, String serverID, String id)
throws IOException {
if (infoJson == null || infoJson.env == null || Util.isEmpty(infoJson.env.control_host)) {
return null;
}
// set timeout to 30 seconds
OkHttpClient client =
defaultClient
.newBuilder()
.connectTimeout(30, TimeUnit.SECONDS)
.readTimeout(30, TimeUnit.SECONDS)
.build();
final String server = infoJson.env.control_host;
JsonObject jsonObject = new JsonObject();
jsonObject.addProperty("command", "request_tunnel");
jsonObject.addProperty("version", 1);
jsonObject.addProperty("serverID", serverID);
jsonObject.addProperty("id", id);
RequestBody requestBody =
RequestBody.create(MediaType.parse("text/plain"), gson.toJson(jsonObject));
Request request =
new Request.Builder()
.url(HttpUrl.parse("http://" + server + "/Serv.php"))
.post(requestBody)
.build();
Response response = client.newCall(request).execute();
JsonReader reader = null;
try {
InputStream in = response.body().byteStream();
reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
return gson.fromJson(reader, ServerInfoJson.class);
} finally {
if (reader != null) {
reader.close();
}
}
}