If you set "javax.net.debug" to "help" as in :
It will produce this useful help, and then cause your app to exit.
all turn on all debugging ssl turn on ssl debugging The following can be used with ssl: record enable per-record tracing handshake print each handshake message keygen print key generation data session print session activity defaultctx print default SSL initialization sslctx print SSLContext tracing sessioncache print session cache tracing keymanager print key manager tracing trustmanager print trust manager tracing pluggability print pluggability tracing handshake debugging can be widened with: data hex dump of each handshake message verbose verbose handshake message printing record debugging can be widened with: plaintext hex dump of record plaintext packet print raw SSL/TLS packets
If you have a problem with your SSL certificates, mutual authentication, cookie mangling, ssl session reuse, etc., these flags are your best bet for finding the problem. Often it's easy to turn on 'all' and the grep/cut/sed the meaningful parts of the log file.