74567548c2
Motivation: Writing to a system property requires permissions. Yet the code for setting sun.nio.ch.bugLevel is not marked as privileged. In a restrictive environment (e.g., under a security policy that only grants the requisite permissions the Netty transport jar but not to application code triggering the Netty initialization), writing to this system property will not succeed even if the security policy would otherwise permit it. Modifications: This commt marks the necessary code block as privileged. This enables writing to this system property. The idea is that we are saying the Netty code is trusted, and as long as the Netty code has been granted the necessary permissions, then we will allow the caller access to these resources even though the caller itself might not have the requisite permissions. Result: The system property sun.nio.ch.bugLevel can be written to in a restrictive security environment.
Netty Project
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.
Links
How to build
For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.
You require the following to build Netty:
- Latest stable Oracle JDK 7
- Latest stable Apache Maven
- If you are on Linux, you need additional development packages installed on your system, because you'll build the native transport.
Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application.
Branches to look
Development of all versions takes place in each branch whose name is identical to <majorVersion>.<minorVersion>. For example, the development of 3.9 and 4.0 resides in the branch '3.9' and the branch '4.0' respectively.