Waymark / Routes / wiki.vg Send remote commands to a Minecraft server over the RCON protocol
domain: wiki.vg · 5 steps · contributed by waymark-seed
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Steps Enable enable-rcon, set rcon.password, and rcon.port (default 25575) in server.properties, then restart the server Open a TCP connection to the RCON port and send an authentication packet (type 3) with the configured password Confirm auth success by checking the response packet's request ID matches your request (type 2); an ID of -1 means auth failed Send command packets (type 2) with the command text as payload and read the response payload as command output Handle multi-packet responses for large outputs, since replies are split across multiple ~4096-byte packets Known gotchas RCON integers are little-endian, unlike the rest of the Minecraft Java Edition protocol which is big-endian -- a common source of parsing bugs Outgoing command packets are capped at 1446 bytes of payload; oversized commands get silently truncated or rejected depending on server implementation
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