[SOLVED]Server can't recevie packet

[yyk419476391]

mod will send a packet to server when player join,but server can't recevie packet

here's code

@SubscribeEvent
    public void joinWorld(EntityJoinWorldEvent e) {
    	if (e.entity != Minecraft.getMinecraft().thePlayer)
    		return;
    	Minecraft.getMinecraft().thePlayer.sendQueue.handleCustomPayload(new S3FPacketCustomPayload("CV",new PacketBuffer(Unpooled.copiedBuffer(VERSION.getBytes()))));
    	LogManager.getLogger().info("Packet Sent");
    }

VERSION

is String type

 

server plugin's code

Bukkit.getMessenger().registerIncomingPluginChannel(this, "CV", (String channel, Player ply, byte[] bytes) -> {
            String version = new String(bytes);
            getLogger().log(Level.INFO, "Player client version:{0}", version);
        });

 

after player join,server doesn't write out client version

Edited April 1, 2018 by yyk419476391
Question solved

[Choonster]

NetHandlerPlayClient#handleCustomPayload is the method called when the client receives a custom payload packet from the server, it doesn't send the packet to the server. Use NetworkManager#sendPacket to send a packet to the server.

 

S3FPacketCustomPayload is the custom payload packet sent from the server to the client, hence the S at the start of its name. You need to send the client-to-server custom payload packet that has a C at the start of its name (called CPacketCustomPayload in modern versions).

[yyk419476391]

7 hours ago, Choonster said:

NetHandlerPlayClient#handleCustomPayload is the method called when the client receives a custom payload packet from the server, it doesn't send the packet to the server. Use NetworkManager#sendPacket to send a packet to the server.

 

S3FPacketCustomPayload is the custom payload packet sent from the server to the client, hence the S at the start of its name. You need to send the client-to-server custom payload packet that has a C at the start of its name (called CPacketCustomPayload in modern versions).

thank you,but how to get a NetworkManager instance?

 

[Choonster]

5 minutes ago, yyk419476391 said:

thank you,but how to get a NetworkManager instance?

 

Use your IDE's Find Usages/Find References tool on the NetworkManager class to look for fields that store an instance of it.

[DaemonUmbra]

I can't say much for Bukkit, but I found this in the Forge Docs:
https://mcforge.readthedocs.io/en/latest/networking/simpleimpl/

Edit: Isn't Bukkit entirely serverside anyway? (Rhetorical question)

Edited April 1, 2018 by DaemonUmbra

[yyk419476391]

1 hour ago, Choonster said:

 

Use your IDE's Find Usages/Find References tool on the NetworkManager class to look for fields that store an instance of it.

thanks,i found it at Minecraft class