gws: 性能与用户友好并存的 go websocket server

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

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这是一个创建于 684 天前的主题，其中的信息可能已经有所发展或是发生改变。

全程用爱发电、花了很多时间肝代码，所以厚着脸皮，来求一波 star, issue

话不多说先上测试结果

machine: Ubuntu 20.04LTS VM (4C8T)
client: tcpkali

Server	Connection	Send Speed(msg/s)	Payload size	Download / Upload Bandwidth(Mbps)
gws	200	20000	2.34KiB	11614.442↓ 11556.101↑
gorilla	200	20000	2.34KiB	4244.398↓ 4188.711↑
gws	2000	500	2.34KiB	7906.156↓ 7914.797↑
gorilla	2000	500	2.34KiB	4263.545↓ 4260.077↑
gws	5000	50	2.34KiB	4941.188↓ 4943.667↑
gorilla	5000	50	2.34KiB	-
gws	10000	10	2.34KiB	1980.124↓ 1977.561↑
gorilla	10000	10	2.34KiB	1972.556↓ 1979.981↑
gws	10000	20	2.34KiB	3952.788↓ 3959.341↑
gorilla	10000	20	2.34KiB	-

- means exception

亮点

无依赖
不需要开启额外协程监听消息, 处理各种事件
读写消息不返回错误, 它们在 gws 内部被适当的处理了
重新实现了 bytes.Buffer, 大部分情况不会动态扩容
通过了 autobahn-testsuite 所有的 WebSocket Protocol 测试用例

安装

go get -v github.com/lxzan/gws@latest

核心接口

type Event interface {
    OnOpen(socket *Conn)
    OnError(socket *Conn, err error)
    OnClose(socket *Conn, code uint16, reason []byte)
    OnPing(socket *Conn, payload []byte)
    OnPong(socket *Conn, payload []byte)
    OnMessage(socket *Conn, message *Message)
}

快速开始

package main

import (
	"fmt"
	"github.com/lxzan/gws"
	"net/http"
)

func main() {
	var config = &gws.Config{
		CompressEnabled:   true,
		CheckTextEncoding: true,
		MaxContentLength:  32 * 1024 * 1024,
		ResponseHeader:    http.Header{"Server": []string{"gws"}},
	}
	var handler = new(WebSocket)
	http.HandleFunc("/connect", func(writer http.ResponseWriter, request *http.Request) {
		socket, err := gws.Accept(writer, request, handler, config)
		if err != nil {
			return
		}
		socket.Listen()
	})

	_ = http.ListenAndServe(":3000", nil)
}

type WebSocket struct{}

func (c *WebSocket) OnClose(socket *gws.Conn, code uint16, reason []byte) {
	fmt.Printf("onclose: code=%d, payload=%s\n", code, string(reason))
}

func (c *WebSocket) OnError(socket *gws.Conn, err error) {
	fmt.Printf("onerror: err=%s\n", err.Error())
}

func (c *WebSocket) OnOpen(socket *gws.Conn) {
	println("connected")
}

func (c *WebSocket) OnPing(socket *gws.Conn, payload []byte) {
	fmt.Printf("onping: payload=%s\n", string(payload))
	socket.WritePong(payload)
}

func (c *WebSocket) OnPong(socket *gws.Conn, payload []byte) {}

func (c *WebSocket) OnMessage(socket *gws.Conn, message *gws.Message) {
	socket.WriteMessage(message.Typ(), message.Bytes())
	message.Close()
}

测试

docker run -it --rm \
    -v ${PWD}/config:/config \
    -v ${PWD}/reports:/reports \
    crossbario/autobahn-testsuite \
    wstest -m fuzzingclient -s /config/fuzzingclient.json

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