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Minecrell 16869992a8 Call PaperServerListPingEvent for legacy pings (#1057)
* Make the legacy ping handler more reliable

The Minecraft server often fails to respond to old ("legacy") pings
from old Minecraft versions using the protocol used before the switch
to Netty in Minecraft 1.7.

Due to packet fragmentation[1], we might not have all needed bytes
available when the LegacyPingHandler is called. In this case, it will
run into an error, remove the handler and continue using the modern
protocol.

This is unlikely to happen for the first two revisions of the legacy
ping protocol (used in Minecraft 1.5.x and older) since the request
consists of only one or two bytes, but happens frequently for the
last/third revision introduced in Minecraft 1.6.

It has much larger, variable packet sizes due to the inclusion of
the virtual host (the hostname/port used to connect to the server).

The solution[2] is simple: If we find more than two matching bytes,
we buffer the remaining bytes until we have enough to fully read and
respond to the request.

[1]: https://netty.io/wiki/user-guide-for-4.x.html#wiki-h3-11
[2]: https://netty.io/wiki/user-guide-for-4.x.html#wiki-h4-13

* Add legacy ping support to PaperServerListPingEvent

Add a new method to StatusClient check if the client is a legacy
client that does not support all of the features provided in the
event.
2018-03-30 13:00:01 -04:00
.github Update ISSUE_TEMPLATE.md 2016-03-26 14:00:59 +01:00
Spigot-API-Patches Call PaperServerListPingEvent for legacy pings (#1057) 2018-03-30 13:00:01 -04:00
Spigot-Server-Patches Call PaperServerListPingEvent for legacy pings (#1057) 2018-03-30 13:00:01 -04:00
licenses [CI-SKIP] Clarify project licensing 2018-03-06 20:41:03 -05:00
scripts Call PaperServerListPingEvent for legacy pings (#1057) 2018-03-30 13:00:01 -04:00
work Update upstream 2018-03-25 20:06:44 -04:00
.gitignore [CI-SKIP] macOS filesystem dust made it past gitignore! 2018-03-13 18:43:13 -04:00
.gitmodules Cleanup and restructure the project 2016-04-01 23:15:41 -05:00
.travis.yml Move mc decompile source to its own folder 2017-08-12 18:56:59 -05:00
CONTRIBUTING.md Add file import and patch notes to CONTRIBUTING.md 2018-01-24 22:47:00 -05:00
LICENSE.md [CI-SKIP] Add vemacs to MIT list (#1043) 2018-03-11 12:16:52 -07:00
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paper Add clean command and fix critical script issue 2017-09-28 17:52:05 -05:00
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README.md

Paper Build Status

High performance Spigot fork that aims to fix gameplay and mechanics inconsistencies.

IRC Support and Project Discussion

Documentation

Access the Paper docs here: paper.readthedocs.io
Access the Paper API javadocs here: paperdocs.emc.gs

How To (Server Admins)

Paperclip is a jar file that you can download and run just like a normal jar file.

Download a copy of paperclip.jar from our build server, here.

Run the Paperclip jar directly from your server. Just like old times

Paper requires Java 8 or above.

How To (Compiling Jar From Source)

To compile Paper, you need JDK 8, maven, and an internet connection.

Clone this repo, run ./paper jar from bash, get files.

How To (Pull Request)

See Contributing

Special Thanks To:

YourKit-Logo

YourKit, makers of the outstanding java profiler, support open source projects of all kinds with their full featured Java and .NET application profilers. We thank them for granting Paper an OSS license so that we can make our software the best it can be.