OpenSslX509TrustManagerWrapper in netty-handler is not Java 6 compatible

Netty 4.y should work on Java 6, it’s not the case of the OpenSslX509TrustManagerWrapper which fails to load the class:

java.lang.NoClassDefFoundError: Could not initialize class io.netty.handler.ssl.OpenSslX509TrustManagerWrapper
	at io.netty.handler.ssl.ReferenceCountedOpenSslContext.chooseTrustManager(ReferenceCountedOpenSslContext.java:541)
	at io.netty.handler.ssl.ReferenceCountedOpenSslServerContext.newSessionContext(ReferenceCountedOpenSslServerContext.java:142)
	at io.netty.handler.ssl.OpenSslServerContext.<init>(OpenSslServerContext.java:350)
	at io.netty.handler.ssl.OpenSslServerContext.<init>(OpenSslServerContext.java:333)
	at io.netty.handler.ssl.SslContext.newServerContextInternal(SslContext.java:422)
	at io.netty.handler.ssl.SslContextBuilder.build(SslContextBuilder.java:447)
	at ...

The problem is rooted in using javax.net.ssl.X509ExtendedTrustManager which was introduced in Java 7.

The netty-handler versions with the issue: 4.1.31 - 4.1.34 (current)

[kwart]

You’re too fast 👍 😃 I’ll check the PR in our tests. Thanks.

[kwart]

All our TLS tests passed on Java 6 with the fix. Well done!