How to Bypass HTTPS Server Certificate Verification in Android?

Https Connection Android: Ignoring Server Certificate for Network Requests

When establishing HTTPS connections in Android, it's crucial to consider server certificate security. However, in certain situations, it may be necessary to establish a connection without verifying the server certificate. This article addresses how to bypass server certificate verification for HTTP connections in Android.

Solution: Trusting All Servers

To ignore server certificates and trust all connections, you can implement a custom HostnameVerifier and install a trust manager that validates all certificates. Here's the code:

HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
  public boolean verify(String hostname, SSLSession session) {
    return true;
  }
};

private static void trustAllHosts() {
  TrustManager[] trustAllCerts = new TrustManager[] {
    new X509TrustManager() {
      public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return new java.security.cert.X509Certificate[] {};
      }

      public void checkClientTrusted(X509Certificate[] chain, String authType)
          throws CertificateException {}

      public void checkServerTrusted(X509Certificate[] chain, String authType)
          throws CertificateException {}
    }
  };

  SSLContext sc = SSLContext.getInstance("TLS");
  sc.init(null, trustAllCerts, new java.security.SecureRandom());
  HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
}

Connection Establishment

Once the trust all hosts method is implemented, you can establish an HTTP connection while ignoring certificate verification using the following code:

HttpURLConnection http = null;
if (url.getProtocol().toLowerCase().equals("https")) {
  trustAllHosts();
  HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
  https.setHostnameVerifier(DO_NOT_VERIFY);
  http = https;
} else {
  http = (HttpURLConnection) url.openConnection();
}

This will allow you to make HTTPS connections without relying on server certificate validation, which may be necessary in specific scenarios. It's crucial to note that this approach should only be used in development or controlled environments where security is not a primary concern.

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