In a connection to a server we get errors such as:
<errorCode>101500</errorCode><errorMessage>Error in Sender</errorMessage>
Is there a way to get more information on the cause, except from "Error in Sender"?
Note: In the SSL transport sender I have set AllowAll for the HostnameVerifier
<transportSender name="https" class="org.apache.synapse.transport.passthru.PassThroughHttpSSLSender">
<parameter name="non-blocking" locked="false">true</parameter>
<parameter name="http.proxyHost" locked="false">internet.proxy</parameter>
<parameter name="http.proxyPort" locked="false">8080</parameter>
<parameter name="http.nonProxyHosts" locked="false">localhost</parameter>
<parameter name="HostnameVerifier">AllowAll</parameter>
Here is some more in detail log (wso2-esb-errors.log). Note that sometimes the messages are delivered correctly to the remote server. The remote server is maintained by a customer on which I have no control.
2016-08-30 05:06:51,995 [-] [HTTPS-Sender I/O dispatcher-1] 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:1666)
at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1634)
at sun.security.ssl.SSLEngineImpl.recvAlert(SSLEngineImpl.java:1800)
at sun.security.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:1083)
at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:907)
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:781)
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)