The given exception "javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake" indicates that the SSL handshake process between the client and the remote server could not be successfully completed, and the remote host terminated the connection during the handshake.
This exception can occur due to various reasons, such as:
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SSL/TLS mismatch: The client and server may be using different versions of the SSL/TLS protocol, or they may not support the same cryptographic algorithms. In such cases, the handshake fails, and the remote host terminates the connection.
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Certificate validation failure: If the server's SSL certificate is not trusted by the client, or if there is an issue with the certificate's chain of trust, the handshake may fail. This can happen if the server's certificate is expired, self-signed, or issued by an untrusted certificate authority (CA).
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Server configuration issues: The server's SSL configuration may be incorrect or incomplete, causing the handshake to fail. For example, the server may be missing intermediate CA certificates or may have disabled certain SSL/TLS protocols or cipher suites.
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Network issues: Network problems, like a firewall or proxy blocking the connection, can also cause the SSL handshake to fail.
To troubleshoot this issue, you can try the following steps:
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Check the SSL/TLS configuration on the client side to ensure it matches the server's requirements. Ensure that you're using a compatible version of the SSL/TLS protocol and supported cipher suites.
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Verify the server's SSL certificate and ensure it is valid and trusted by the client. Check if the certificate is expired, self-signed, or issued by an untrusted CA. If necessary, install the missing intermediate CA certificates on the client.
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Review the server's SSL configuration and ensure it is correctly set up. Check for any misconfigurations, such as missing certificates, disabled protocols, or unsupported cipher suites.
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Test the connection from a different network or location to confirm if there are any network-related issues. Check if the server's IP or hostname is correctly resolved and reachable.
It's worth noting that the exact cause of the issue may vary depending on the specific scenario and environment. Analyzing the server logs and any available debug information can provide more insights into the root cause of the SSL handshake failure.