Transports

Place transport options beside type inside a node. Available transports depend on the proxy protocol; changing a WebSocket service to gRPC locally will not make it work.

Protocol	Transport values in this reference
VMess	tcp, ws, http, h2, grpc, mkcp, mekya
VLESS	tcp, ws, http, h2, grpc, xhttp
Trojan	tcp, ws, grpc

These are fragments to merge into a node, not complete configurations. Retain its endpoint, authentication, and TLS settings; choose one transport.

WebSocket

network: ws
ws-opts:
  path: /proxy
  headers:
    Host: cdn.example.com

Match the server path. Host is an HTTP header, separate from TLS SNI. Add max-early-data and early-data-header-name only with server support. v2ray-http-upgrade selects HTTP Upgrade and is not interchangeable with ordinary WebSocket.

gRPC

network: grpc
grpc-opts:
  grpc-service-name: proxy-service

The service name must match. grpc-user-agent sets the client identifier. Adjust connection and stream limits only for a specific need.

HTTP and HTTP/2

network: http
http-opts:
  method: GET
  path: [/proxy]
  headers:
    Host: [proxy.example.com]

network: h2
h2-opts:
  host: [proxy.example.com]
  path: /proxy

The structures differ: HTTP paths and header values are lists; h2 host is a list and path is a string.

XHTTP for VLESS

network: xhttp
alpn: [h2]
xhttp-opts:
  host: proxy.example.com
  path: /proxy
  mode: stream-one

Match stream-one, stream-up, or packet-up to the service. ALPN must match the server HTTP version. Retain any service-provided headers, padding, and reuse options under xhttp-opts.

mKCP and Mekya for VMess

network: mkcp
mkcp-opts:
  mtu: 1350
  tti: 50
  uplink-capacity: 5
  downlink-capacity: 20
  congestion: false

mKCP mtu is in bytes and tti in milliseconds. Match seed and header to the service.

network: mekya
mekya-opts:
  url: https://proxy.example.com/mekya
  max-write-delay: 80
  max-request-size: 96000
  polling-interval-initial: 200
  h2-pool-size: 8

Mekya uses the supplied HTTP URL; nested KCP options go under mekya-opts.kcp. Remove unrelated transport options from the node.

Reference: mihomo.