[HttpClient] javax.net.ssl.SSLProtocolException: handshake alert: unrecognized_name

http 통신 기능 구현 시 아래와 같은 에러를 접하는 경우가 있어서 해결 방법을 기록해 봅니다.

[에러내용]

javax.net.ssl.SSLProtocolException: handshake alert:  unrecognized_name

    at sun.security.ssl.ClientHandshaker.handshakeAlert(ClientHandshaker.java:1441)

    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2016)

    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125)

    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)

    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)

    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)

    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:394)

    at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:353)

    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:141)

[해결방법]

JVM 실행 시 옵션 추가)

-Djsse.enableSNIExtension=false

Application 내부에서 설정 추가)

System.setProperty(“jsse.enableSNIExtension”, “false”);