TCPMUX

frp supports routing connections received on a single port to different proxies, similar to vhostHTTPPort and vhostHTTPSPort.

Currently, the only supported multiplexer is httpconnect.

When tcpmuxHTTPConnectPort is set in frps.toml, frps will listen on this port and accept HTTP CONNECT requests.

frps will route to different backend proxies based on the host in the HTTP CONNECT request.

Example configuration:

# frps.toml
bindPort = 7000
tcpmuxHTTPConnectPort = 1337

# frpc.toml
serverAddr = "x.x.x.x"
serverPort = 7000

[[proxies]]
name = "proxy1"
type = "tcpmux"
multiplexer = "httpconnect"
customDomains = ["test1"]
localPort = 80

[[proxies]]
name = "proxy2"
type = "tcpmux"
multiplexer = "httpconnect"
customDomains = ["test2"]
localPort = 8080

With the above configuration, if frps receives an HTTP CONNECT request:

CONNECT test1 HTTP/1.1\r\n\r\n

The connection will be routed to proxy1.