After upgrading Apache CXF from version 3.5.9 to 3.6.4, I started encountering the following exception during HTTPS requests:
javax.ws.rs.ProcessingException: java.io.IOException: IOException invoking <URL>: java.lang.IllegalArgumentException: Unsupported protocolTLSat org.apache.cxf.jaxrs.client.AbstractClient.checkClientException(AbstractClient.java:645)...Caused by: java.lang.IllegalArgumentException: Unsupported protocolTLS at sun.security.ssl.ProtocolVersion.namesOf(ProtocolVersion.java:292) ...This issue didn't occur with version 3.5.9, and I have verified that the server supports TLSv1.2. My application is explicitly configured to use TLSv1.2, and no changes were made to the code except for upgrading dependencies.What I’ve Tried:
- Verified that the server supports TLSv1.2 using external tools.
- Ensured my JVM (Java 11) supports TLSv1.2.
- Checked Apache CXF release notes for any changes in protocol or SSL configuration but found no relevant
- Confirmed the same configuration worked perfectly with CXF 3.5.9.
Environment:
- Apache CXF: 3.6.4 (previously 3.5.9)
- Java: 11
- Framework: Spring Boot 2.x
- Protocol: HTTPS with TLSv1.2