Provides an option to disbale auto download spark

[Akiranya]

As the title. The reason for this feature request is because my server sometimes could be stuck at this startup stage for a very long time just because the spark server is timeout. The second reason for this is because some of my test enviroment is not connected to the Internet but to the other server in my LAN.

This is where the server got stuck at:

[14:36:02 INFO]: Generating keypair                                                                                        
[14:36:02 INFO]: Starting Minecraft server on *:20000                                                                      
[14:36:02 INFO]: Using epoll channel type                                                                                  
[14:36:02 INFO]: Paper: Using libdeflate (Linux x86_64) compression from Velocity.              
[14:36:02 INFO]: Paper: Using OpenSSL 1.1.x (Linux x86_64) cipher from Velocity.                                           
[14:38:12 ERROR]: Purpur: Failed to download and install spark plugin                                                      
[14:38:12 WARN]: java.net.ConnectException: Connection timed out                                                           
[14:38:12 WARN]:        at java.base/sun.nio.ch.Net.connect0(Native Method)                                                
[14:38:12 WARN]:        at java.base/sun.nio.ch.Net.connect(Net.java:579)                                                  
[14:38:12 WARN]:        at java.base/sun.nio.ch.Net.connect(Net.java:568)                                                  
[14:38:12 WARN]:        at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588)                              
[14:38:12 WARN]:        at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)                            [14:38:12 WARN]:        at java.base/java.net.Socket.connect(Socket.java:633)                                              
[14:38:12 WARN]:        at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)                        
[14:38:12 WARN]:        at java.base/sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:174)                
[14:38:12 WARN]:        at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:183)                               
[14:38:12 WARN]:        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:498)
[14:38:12 WARN]:        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:603)                           
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:266)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:380)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Abstrac
tDelegateHttpsURLConnection.java:189)                                                                                      
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1242)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1128)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegate
HttpsURLConnection.java:175)                                                                                               
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:166
5)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589
)
[14:38:12 WARN]:        at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImp
l.java:224)
[14:38:12 WARN]:        at java.base/java.net.URL.openStream(URL.java:1161)
[14:38:12 WARN]:        at org.bukkit.craftbukkit.v1_19_R1.CraftServer.loadPlugins(CraftServer.java:434)
[14:38:12 WARN]:        at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:313)
[14:38:12 WARN]:        at net.minecraft.server.MinecraftServer.v(MinecraftServer.java:1141)
[14:38:12 WARN]:        at net.minecraft.server.MinecraftServer.lambda$spin$1(MinecraftServer.java:310)
[14:38:12 WARN]:        at java.base/java.lang.Thread.run(Thread.java:833)

I hope there can be an option to disable this auto download feature

[0x7d8]

You can disable spark using -DPurpur.IReallyDontWantSpark=true

[Akiranya]

Oh didn't know that this was already done by using an Java argument ... Thank you