WSO2 API Manager Received fatal alert: handshake_failure

Using WSO2 API Manager (V1.10), I published a API and I imported the SSL certificate to client-truststore.jks. But When I call this API, I 'm receving this error:

2016-07-11 11:42:11,296 [-] [HTTPS-Sender I/O dispatcher-7] ERROR TargetHandler I/O error: Received fatal alert: handshake_failure
javax.net.ssl.SSLException: Received fatal alert: handshake_failure
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1650)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1618)
at sun.security.ssl.SSLEngineImpl.recvAlert(SSLEngineImpl.java:1787)
at sun.security.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:1071)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:893)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:767)
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
at org.apache.http.nio.reactor.ssl.SSLIOSession.doUnwrap(SSLIOSession.java:228)
at org.apache.http.nio.reactor.ssl.SSLIOSession.doHandshake(SSLIOSession.java:263)
at org.apache.http.nio.reactor.ssl.SSLIOSession.isAppInputReady(SSLIOSession.java:391)
at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:119)
at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:159)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:338)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:316)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:277)
at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:105)
at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:586)
at java.lang.Thread.run(Thread.java:745)

Solution

I suspect your API calling client program does not have the API server's certificate. (Usually you import your certificate into your JRE's jacerts or other trust store)

But When I call this API, I 'm receving this error:

When you call this API, did this API calling client program (Java, for example) also get this WSO2 server's certificate imported? This may solve your problem.