How to connect to a server with a self signed certificate from android using 5222 port

Put your certificate into the asset folder (***.crt). Just download it using Firefox when you enter your domain via https

then use the following code

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XMPPTCPConnectionConfiguration   config  = XMPPTCPConnectionConfiguration.builder()

        .setHost(HOST)

        .setPort(PORT) // default 5222

        .setServiceName(SERVECE_NAME) // usually the same as your server name

        .setCustomSSLContext(getSSLContext())

        .setResource(RESOURCE)

        .setUsernameAndPassword(USERNAME, PASSWORD)

        .setCompressionEnabled(true)

        .setSecurityMode(ConnectionConfiguration.SecurityMode.required)

        .setDebuggerEnabled(true)

        .setSendPresence(false).build();

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public  SSLContext getSSLContext (){

   CertificateFactory cf = null;

   SSLContext context= null;

   try {

            cf = CertificateFactory.getInstance("X.509");

            InputStream caInput = new BufferedInputStream((application or activity Context).getAssets().open("***.crt"));

            Certificate ca = cf.generateCertificate(caInput);

            String keyStoreType = KeyStore.getDefaultType();

            KeyStore keyStore = KeyStore.getInstance(keyStoreType);

            keyStore.load(null, null);

            keyStore.setCertificateEntry("ca", ca);

            String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();

            TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);

            tmf.init(keyStore);

             // Create an SSLContext that uses our TrustManager
            context = SSLContext.getInstance("TLS");

            context.init(null, tmf.getTrustManagers(), null);

  } catch (CertificateException e) {

            e.printStackTrace();

  } catch (KeyManagementException e) {

            e.printStackTrace();

  } catch (NoSuchAlgorithmException e) {

            e.printStackTrace();

  } catch (KeyStoreException e) {

            e.printStackTrace();

  } catch (IOException e) {

            e.printStackTrace();

  }

   return context;

}

Resources: CertificateFactory (Java Platform SE 7 )