S40PacketDisconnect — Minecraft 1.8.9 Packet Reference

0x40 S40PacketDisconnect

Kicks the player from the server during gameplay with a JSON chat component reason message.

Clientbound (Server → Client) · PLAY · net/minecraft/network/play/server/S40PacketDisconnect.java

playerdisconnectkick

Fields

Field	Type	Description
reason	IChatComponent (JSON)	Kick/disconnection reason displayed to the player

Wire Encoding

Field	Type	Notes
Reason	Chat Component (JSON)	JSON-serialized IChatComponent

MCP References

MCPNetHandlerPlayClient.handleDisconnect()

Handler Interface

HNDINetHandlerPlayClient

Notes

This is the PLAY-state disconnect (vs S00PacketDisconnect for LOGIN). When received, the client immediately closes the network connection and displays the disconnect screen with the reason.

implementation Implementation Cases

AutoReconnect (Tenacity 5.1, Gugustus)

Detect disconnect/kick. AutoReconnect reconnects. AntiKick cancels.

if (event.getPacket() instanceof S40PacketDisconnect) {
  event.setCancelled(true);
  AutoReconnect.reconnect();
}

Vanilla hook: EventReceivePacket

AntiKick (Tenacity 5.1, Gugustus)

Detect disconnect/kick. AutoReconnect reconnects. AntiKick cancels.

if (event.getPacket() instanceof S40PacketDisconnect) {
  event.setCancelled(true);
  AutoReconnect.reconnect();
}

Vanilla hook: EventReceivePacket

NameProtect (Tenacity 5.1, Gugustus)

Detect disconnect/kick. AutoReconnect reconnects. AntiKick cancels.

if (event.getPacket() instanceof S40PacketDisconnect) {
  event.setCancelled(true);
  AutoReconnect.reconnect();
}

Vanilla hook: EventReceivePacket

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