There are several downsides to this simple approach.Servers should be able to upgrade to stronger keys over time ("key rotation"), which replaces the public key in the certificate with a new one.The chain is made of a server certificate, an intermediate CA certificate, and a root self-signed certificate.The validation outcome is ok if the input is: The validation failed, with unhandled extensions key usage and basic constraints, if the input is the whole certificate chain.To help you ensure that this does not happen to your app, this article highlights the common pitfalls when using secure network protocols and addresses some larger concerns about using Public-Key Infrastructure (PKI).In a typical SSL usage scenario, a server is configured with a certificate containing a public key as well as a matching private key.
Http Input Stream(Http URLConnection.java:1615) at Https URLConnection Input Stream(Https URLConnection Impl.java:254) at Main Project.
That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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IOException: Server returned HTTP response code: 401 for URL: https:// at
X509Certificate; public class Cert Exception in thread "main"