Why Am I Getting an \'Unrecognized SSL Message, Plaintext Connection?\' Exception in Java?

Unveiling the Cause of SSL Exception: Plaintext Connection Detected

An exception resembling "Unrecognized SSL message, plaintext connection?" plagues Java developers attempting to establish secure connections with HTTPS servers. This bewildering error message often arises when connecting to a remote server over HTTP instead of HTTPS.

Diagnosis and Resolution

The exception signifies that the established connection between the client and the server lacks encryption. This occurs when the client program attempts to communicate with an HTTP endpoint (default port 80) rather than an HTTPS endpoint (default port 443).

To rectify this issue, ensure that the target server supports HTTPS communication and verify the port number used. Reconfigure your client program to connect to the HTTPS endpoint (port 443) instead of the HTTP endpoint (port 80). By transitioning to a secure HTTPS connection, you establish encryption, protecting your data from eavesdropping and man-in-the-middle attacks.

By adhering to these simple steps, you can effortlessly resolve the "Unrecognized SSL message, plaintext connection?" exception and secure your communication with remote HTTPS servers.

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