SSLHandshakeException - Chain chain validation failed, how to solve?

Question

in my application I am trying to do a HTTPS POST request to my server. However, I keep getting SSLHandshakeException - Chain chain validation failed, all the time. I tried to send a request using POSTMAN and I got a response from the server. What can be causing this error when I try to send the request from the application?

Here a code snippet where I try to send the post request:

   public static JSONObject getDataLibConfiguration(Context context) throws HttpRequestException {      int statusCode = 0;      JSONObject commonInformation;     HttpsURLConnection connection = null;      try {          commonInformation = ConfigurationProcessor.getCommonInformation(context);         if (commonInformation == null) {             return null;         }          URL url = new URL(BuildConfig.SERVER_CONFIG_URL);         if (BuildConfig.DEBUG) {             LogUtils.d(TAG, "url = " + url.getPath());         }          connection = getHttpsConnection(url);         connection.setDoOutput(true);         connection.setDoInput(true);         connection.setRequestMethod("POST");         connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");         connection.setRequestProperty("Content-Encoding", "gzip");          byte[] gzipped = HttpUtils.gzip(commonInformation.toString());         cos = new CountingOutputStream(connection.getOutputStream()); //<-- This is where I get the exception         cos.write(gzipped);         cos.flush();          statusCode = connection.getResponseCode();         // More code her  }  private static HttpsURLConnection getHttpsConnection(URL url) throws IOException, GeneralSecurityException {          HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();          try {             SSLContext sslContext = SSLContext.getInstance("TLS");             MatchDomainTrustManager myTrustManager = new MatchDomainTrustManager(url.getHost());             TrustManager[] tms = new TrustManager[]{myTrustManager};             sslContext.init(null, tms, null);             SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();             connection.setSSLSocketFactory(sslSocketFactory);         } catch (AssertionError ex) {             if (BuildConfig.DEBUG) {                 LogFileUtils.e(TAG, "Exception in getHttpsConnection: " + ex.getMessage());             }             LogUtils.e(TAG, "Exception: " + ex.toString());         }         return connection;     } 

Answer 1

In my case it was wrong date on phone.

Fixing date resolved an issue