Apranik

Mux.Cool ​

The muxcool key of a VLESS inbound or outbound: how Mux.Cool is used. On an outbound each key means "send"; on an inbound, "accept". Left out, UDP goes as XUDP and TCP is not multiplexed, as in Xray's and sing-box's clients.

Structure ​

json
{
  "udp": {
    "enabled": true,
    "xudp": {
      "enabled": true,
      "global_id": { "enabled": true, "hold_time": "60s" }
    }
  },
  "tcp": { "enabled": false }
}

Fields ​

udp.enabled ​

booleanDefault: true

Carry UDP through Mux.Cool. false uses the protocol's plain UDP; on an inbound, an Xray or sing-box client's default UDP then fails.

udp.xudp.enabled ​

booleanDefault: true

Use XUDP: one sub-connection carries every destination of a UDP session. false is refused, since plain Mux.Cool UDP is not built.

udp.xudp.global_id.enabled ​

booleanDefault: true

Name each UDP session with a Global ID, so a session survives a lost stream (a phone moving from Wi-Fi to mobile data): the destination keeps seeing the same source port. Tested against Xray's server, which supports it (Xray 26.10.10). sing-box's server was not found to use it.

udp.xudp.global_id.hold_time ​

durationDefault: 60sinbound only

How long the server holds a session whose stream was lost. Only the same user can take it back.

tcp.enabled ​

booleanDefault: false

TCP over Mux.Cool is not built: true is refused.

udp.concurrency, tcp.concurrency and tcp.max_total are reserved and refused.