Develop Reference

An authentication problem occurs in the Android web socket

I try to connect to the server using a web socket, but this error occurs.
java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Here's my code for the connection.
private final class EchoWebSocketListener extends WebSocketListener {
#Override
public void onOpen(WebSocket webSocket, Response response) {
webSocket.send("text");
}
#Override
public void onMessage(WebSocket webSocket, String text) {
output("Receiving : " + text);
}
#Override
public void onMessage(WebSocket webSocket, ByteString bytes) {
output("Receiving bytes : " + bytes.hex());
}
#Override
public void onClosing(WebSocket webSocket, int code, String reason) {
webSocket.close(NORMAL_CLOSURE_STATUS, null);
output("Closing : " + code + " / " + reason);
}
#Override
public void onFailure(WebSocket webSocket, Throwable t, Response response) {
output("Error : " + t.getMessage());
}
}
private void start() {
Request request = new Request.Builder().url("wss://xxx.xxx.xxx.xxx:8443/one2many").build();
EchoWebSocketListener listener = new EchoWebSocketListener();
WebSocket ws = client.newWebSocket(request, listener);
client.dispatcher().executorService().shutdown();
}
}
I am staying in this problem and I want you to help me!

How to show response errorBody in Retrofit on Android

In my app, I want to use Retrofit2 to connect to the server and get some data.
For this, I've written the code as shown below but it doesn't show the data. And for some reason, no (detailed) error is outputted.
private void getDetailData(String auctionID, final String jwtToken) {
showLoading(true);
Call<DetailResponse> call = apis.getDetainAuctions(auctionID, jwtToken, agent);
call.enqueue(new Callback<DetailResponse>() {
#Override
public void onResponse(Call<DetailResponse> call, final Response<DetailResponse> response) {
Log.e("detailLog", "OK");
Log.e("detailLog", response.message() + " --- " + response.errorBody());
if (response.isSuccessful()) {
}
}
#Override
public void onFailure(Call<DetailResponse> call, Throwable t) {
Log.e("detailLog", "Err : " + t.getMessage());
}
});
}
Logcat error:
E/detailLog: --- okhttp3.ResponseBody$1#cbf85bc
What does the error mean?

java.net.ProtocolException: unexpected end of stream happened when i uploaded a image to server by okhttp

The error happened when i upload a 115KB image file to server.(the most answer of stackoverflow is about download the file.I do not know if it is the same to those)
the error information is below:
onFailure : java.net.ProtocolException: unexpected end of stream
Relevant Code:
public void upLoadImageFile(String uploadUrl, File file, Map<String, String> maps, final HWUploadListener listener) {
final CallbackHandler handler = new CallbackHandler(listener);
try {
MultipartBody.Builder builder = new MultipartBody.Builder().setType(MultipartBody.FORM);
if (maps == null) {
builder.addPart(Headers.of("Content-Disposition", "form-data; name=\"image\";filename=\"file.jpg\""),
RequestBody.create(MediaType.parse("image/jpeg"), file)).build();
} else {
for (String key : maps.keySet()) {
builder.addFormDataPart(key, maps.get(key));
}
builder.addPart(Headers.of("Content-Disposition", "form-data; name=\"image\";filename=" + file.getName()), RequestBody.create(MediaType.parse("image/jpeg"), file)
);
}
RequestBody body = builder.build();
final Request request = new Request.Builder().url(uploadUrl).post(body).build();
final Call call = mOkHttpClient.newBuilder().writeTimeout(50, TimeUnit.SECONDS).build().newCall(request);
call.enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
UtilUtils1.log("HuowuSdk", "onFailure ：" + e.toString());
handler.uploadFailure(e.toString());
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if (response.isSuccessful()) {
String result = response.body().string();
handler.uploadSuccess(result);
} else {
handler.uploadFailure(response.message());
}
}
});
} catch (Exception e) {
UtilUtils1.log("HuowuSdk", e.toString());
handler.uploadError(e.toString());
}
}
Appreciate your answer!!

Here in this line below you have to increase write timeout because while uploading your write timeout expires that may be the reason so in below line increase writeTimeout limit:
final Call call = mOkHttpClient.newBuilder().writeTimeout(50, TimeUnit.SECONDS).build().newCall(request);

Simpler way to call and API Gateway endpoint with Cognito credentials in Java without generated SDK?

I do not want to use a generated SDK for my API Gateway endpoint. I want to use the plain AWS SDK. When I googled how to do that, nothing obvious came up in the first few hits (surprisingly). So I cobbled this together:
private static void invokeApiGatewayWithCognito(String identityPoolId, String endpoint) throws URISyntaxException {
AmazonCognitoIdentity cognitoClient = AmazonCognitoIdentityClient.builder()
.withCredentials(new AWSCredentialsProvider() {
#Override
public AWSCredentials getCredentials() {
return new AnonymousAWSCredentials();
}
#Override
public void refresh() {
}
}).withRegion(EU_CENTRAL_1.getName()).build();
String identityId = cognitoClient.getId(new GetIdRequest()
.withIdentityPoolId(identityPoolId))
.getIdentityId();
Credentials cognitoCreds = cognitoClient
.getCredentialsForIdentity(
new GetCredentialsForIdentityRequest()
.withIdentityId(identityId))
.getCredentials();
AWS4Signer signer = new AWS4Signer();
signer.setServiceName("execute-api");
signer.setRegionName(EU_CENTRAL_1.getName());
AmazonHttpClient amazonHttpClient =
new AmazonHttpClient(new ClientConfiguration());
Request r = new DefaultRequest("execute-api");
r.setEndpoint(new URI(endpoint));
r.setHttpMethod(HttpMethodName.GET);
BasicSessionCredentials basicCreds = new BasicSessionCredentials(
cognitoCreds.getAccessKeyId(),
cognitoCreds.getSecretKey(),
cognitoCreds.getSessionToken());
signer.sign(r, basicCreds);
amazonHttpClient
.requestExecutionBuilder()
.request(r)
.execute(logResponse());
}
private static HttpResponseHandler<Void> logResponse() {
return new HttpResponseHandler<Void>() {
#Override
public Void handle(HttpResponse httpResponse) throws Exception {
System.out.println("response code = " + httpResponse.getStatusCode());
System.out.println("response headers = " + httpResponse.getHeaders());
System.out.println("response content = " + new String(bytes(httpResponse.getContent())));
return null;
}
#Override
public boolean needsConnectionLeftOpen() {
return false;
}
};
}
It works, but boy is that ugly code. What am I missing? How can this be done more cleanly?

GAE OAuth Java: No authentication header information

I have this error:
WARNING: Authentication error: Unable to respond to any of these challenges: {}
Exception : No authentication header information
I am using GWT with eclipse.
I really don't know what's wrong in my code.
Any help would be appreciated.
Thanks in advance.
Client side EntryPoint class:
private static final String GOOGLE_AUTH_URL = "https://accounts.google.com/o/oauth2/auth";
private static final String GOOGLE_CLIENT_ID = "xxxxxxx.apps.googleusercontent.com";
private static final String CONTACTS_SCOPE = "https://www.google.com/m8/feeds";
private static final Auth AUTH = Auth.get();
public void onModuleLoad() {
final AuthRequest req = new AuthRequest(GOOGLE_AUTH_URL, GOOGLE_CLIENT_ID).withScopes(CONTACTS_SCOPE);
AUTH.login(req, new Callback<String, Throwable>() {
public void onSuccess(String token) {
ABASession.setToken(token);
}
public void onFailure(Throwable caught) {
Window.alert("Error:\n" + caught.getMessage());
}
});
}
I store the token in a class that I will use later.
Server side: ContactServiceImpl (RPC GAE procedure)
//The token stored previously is then passed through RPC
public List printAllContacts(String token) {
try {
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey("My consumer key");
oauthParameters.setOAuthConsumerSecret("My consumer secret");
PrivateKey privKey = getPrivateKey("certificate/akyosPrivateKey.key");
OAuthRsaSha1Signer signer = new OAuthRsaSha1Signer(privKey);
ContactsService service = new ContactsService("XXX");
service.setProtocolVersion(ContactsService.Versions.V3);
oauthParameters.setOAuthToken(token);
service.setOAuthCredentials(oauthParameters, signer);
// Request the feed
URL feedUrl = new URL("http://www.google.com/m8/feeds/contacts/default/full?xoauth_requestor_id=xxx.yyy#gmail.com");
ContactFeed resultFeed = service.getFeed(feedUrl, ContactFeed.class);
for (ContactEntry entry : resultFeed.getEntries()) {
for (Email email : entry.getEmailAddresses()) {
contactNames.add(email.getAddress());
}
}
return contactNames;
} catch (Exception e) {
System.err.println("Exception : " + e.getMessage());
}
return null;
}

set the scope
oauthParameters.setScope("http://www.google.com/m8/feeds/contacts/default/full");