I have seen Where to find Java 6 JSSE/JCE Source Code? and asked the question myself How to get JRE/JDK with matching source? but I don\'t either of these was specific enough
As a matter of fact, the SSL implementation is included in the OpenJDK sources, but for some reason not in the standard source Zip file. I have no clue why.
I don't know where one would normally fetch the OpenJDK sources; I got them on Debian via apt-get source openjdk-6
. The SSL implementation sources are in jdk/src/share/classes/javax/net/ssl
.