feat: add gost-plugin in which only ws and mws are currently tested.

[cesaryuan]

The reason for proposing this PR is that currently mihomo does not support ss nodes with a transport layer of multiplexing websocket(mws) which is served by gost, because the multiplexing in gost uses xtaci/smux, which is different from the multiplexing in mihomo v2ray-plugin.

Although my modification does indeed allow me to use the ss+mws node of gost normally, after all, I have not deeply studied the code of mihomo. So I don't know if there are any omissions or unclear places. I hope everyone can criticize and correct me.

Test steps

First, run a gost server.

gost -L ss+mws://aes-128-gcm:password@localhost:8000

Corresponding mihomo configuration:

mixed-port: 7854

proxy-groups:
  - name: PROXY
    type: select
    include-all: true

rules:
  - MATCH,gost ss+mws

proxies:
  - name: 'gost ss+mws'
    type: 'ss'
    server: 'localhost'
    port: 8000
    cipher: 'aes-128-gcm'
    password: 'password'
    plugin: gost-plugin
    plugin-opts:
      mode: 'websocket'
      path: "/ws"
      mux: true

Curl command for testing: curl -x "http://127.0.0.1:7854" https://qq.com

Test result

Before applying my pull request (PR), the command will report an error:

E:\desktop> curl -x "http://127.0.0.1:7854" https://qq.com
curl: (35) schannel: failed to receive handshake, SSL/TLS connection failed

Apply my pull request, then the command runs successfully.

[xishang0128]

@cesaryuan This protocol is not included in the V2Ray Transport, you should write a separate plugin for this protocol

[cesaryuan]

@cesaryuan This protocol is not included in the V2Ray Transport, you should write a separate plugin for this protocol

Understood. I will try to write a separate plugin right away.

[xishang0128]

@cesaryuan Additionally, smux can directly use the existing dependence github.com/sagernet/smux in go.mod.

[cesaryuan]

@xishang0128 I have separated out a plugin. There is only one websocket file, and this file is basically a copy of v2ray-plugin. Please check it.

Although the plugin currently only implements gost's mws and ws, I still submitted it first. If there are more functional requirements later, more pr will be pushed.

[xishang0128]

There are still some unnecessary configuration items in gostObfsOption

[cesaryuan]

There are still some unnecessary configuration items in gostObfsOption

Thanks! V2rayHttpUpgrade and V2rayHttpUpgradeFastOpen are removed now.

[xishang0128]

Additionally, mode can directly use websocket, and it is sufficient to distinguish gost using plugin

[cesaryuan]

Additionally, mode can directly use websocket, and it is sufficient to distinguish gost using plugin

I originally thought so, but I found that if websocket is used, the function signature of StreamConnContext may need to be modified. It seems that this function can not obtain the Plugin name. So it cannot be distinguished whether it is v2ray's or gost's websocket mode.

mihomo/adapter/outbound/shadowsocks.go

Lines 111 to 116 in 382b08c

	case "websocket":
	var err error
	c, err = v2rayObfs.NewV2rayObfs(ctx, c, ss.v2rayOption)
	if err != nil {
	return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
	}

Should I modify the function signature?

[wwqgtxx]

it cannot be distinguished whether it is v2ray's or gost's websocket mode.

You can simply determine whether ss.v2rayOption is nil。

[cesaryuan]

You can simply determine whether ss.v2rayOption is nil。

Thank you for your advice! Done.

[cesaryuan]

@xishang0128 Hi, sorry to bother you. Is there anything else I need to do with this pr?

[xishang0128]

@xishang0128 Hi, sorry to bother you. Is there anything else I need to do with this pr?

Just need to add an example of using gost in docs/config.yaml.

[cesaryuan]

Just need to add an example of using gost in docs/config.yaml.

@xishang0128 The example is added. Another change during this period is disabling the keepalive option to fix memory leaks.

[dbr4fr]

@cesaryuan
Hope support ss+mwss for gost-plugin thank u very very very much
This is a feature I have been looking forward to for a long time. I am using the default certificate of gost
this is my server config
services:

• name: service-0
  addr: server:port
  handler:
  type: ss
  listener:
  type: mwss
  metadata:
  path: /ws
  header:
  host: apple.com
  keepalive: false

[cesaryuan]

@cesaryuan Hope support ss+mwss for gost-plugin thank u very very very much This is a feature I have been looking forward to for a long time. I am using the default certificate of gost this is my server config services:

• name: service-0
  addr: server:port
  handler:
  type: ss
  listener:
  type: mwss
  metadata:
  path: /ws
  header:
  host: apple.com
  keepalive: false

You can try the following mwss config:

    plugin: gost-plugin
    plugin-opts:
      mode: 'websocket'
      path: "/ws"
      mux: true
      tls: true
      skip-cert-verify: true

[dbr4fr]

@cesaryuan thank u very very very much!!!
Since it is not using the real gost code, the speed and speed stability seems not as good as using the gost client
you can use speed.cloudflare.com of 100kB download test to confirm

[cesaryuan]

@cesaryuan thank u very very very much!!! Since it is not using the real gost code, the speed and speed stability seems not as good as using the gost client you can use speed.cloudflare.com of 100kB download test to confirm

I didn't detect a significant gap on my node. 😂

[dbr4fr]

@cesaryuan
😃 I'll observe for a while
The speed of small files is similar to sing-box vless+reality+smux, it should be slower than useing gost client on mwss
thank u for your reply!!

[dbr4fr]

@cesaryuan, gost,clash中下面这关于smux的参数是不是默认值不一样呀
max-connections:
min-streams: 
max-streams: 

[cesaryuan]

max-connections:
min-streams:
max-streams:

没有更改，都是默认的

[wlrsx]

如果能支援 gost 的 Remote Port Forwarding 更棒。

[cesaryuan]

如果能支援 gost 的 Remote Port Forwarding 更棒。

https://wiki.metacubex.one/config/tunnels/