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简介

quickws是一个高性能的websocket库

Go codecov Go Report Card

特性

  • 完整实现rfc6455
  • 完整实现rfc7692
  • 高tps
  • 低内存占用
  • 池化管理所有buffer

内容

注意⚠️

quickws默认返回read buffer的浅引用,如果生命周期超过OnMessage的,需要clone一份再使用

Installation

go get github.com/antlabs/quickws

example

net http升级到websocket服务端

package main

import (
 "fmt"
 "net/http"
 "time"

 "github.com/antlabs/quickws"
)

type echoHandler struct{}

func (e *echoHandler) OnOpen(c *quickws.Conn) {
 fmt.Println("OnOpen:\n")
}

func (e *echoHandler) OnMessage(c *quickws.Conn, op quickws.Opcode, msg []byte) {
 fmt.Printf("OnMessage: %s, %v\n", msg, op)
 if err := c.WriteTimeout(op, msg, 3*time.Second); err != nil {
  fmt.Println("write fail:", err)
 }
}

func (e *echoHandler) OnClose(c *quickws.Conn, err error) {
 fmt.Println("OnClose: %v", err)
}

// echo测试服务
func echo(w http.ResponseWriter, r *http.Request) {
 c, err := quickws.Upgrade(w, r, quickws.WithServerReplyPing(),
  // quickws.WithServerDecompression(),
  // quickws.WithServerIgnorePong(),
  quickws.WithServerCallback(&echoHandler{}),
  quickws.WithServerReadTimeout(5*time.Second),
 )
 if err != nil {
  fmt.Println("Upgrade fail:", err)
  return
 }

 c.StartReadLoop()
}

func main() {
 http.HandleFunc("/", echo)

 http.ListenAndServe(":8080", nil)
}

返回

gin升级到websocket服务端

package main

import (
 "fmt"

 "github.com/antlabs/quickws"
 "github.com/gin-gonic/gin"
)

type handler struct{}

func (h *handler) OnOpen(c *quickws.Conn) {
 fmt.Printf("服务端收到一个新的连接")
}

func (h *handler) OnMessage(c *quickws.Conn, op quickws.Opcode, msg []byte) {
 // 如果msg的生命周期不是在OnMessage中结束,需要拷贝一份
 // newMsg := make([]byte, len(msg))
 // copy(newMsg, msg)

 fmt.Printf("收到客户端消息:%s\n", msg)
 c.WriteMessage(op, msg)
 // os.Stdout.Write(msg)
}

func (h *handler) OnClose(c *quickws.Conn, err error) {
 fmt.Printf("服务端连接关闭:%v\n", err)
}

func main() {
 r := gin.Default()
 r.GET("/", func(c *gin.Context) {
  con, err := quickws.Upgrade(c.Writer, c.Request, quickws.WithServerCallback(&handler{}))
  if err != nil {
   return
  }
  con.StartReadLoop()
 })
 r.Run()
}

返回

客户端

package main

import (
 "fmt"
 "time"

 "github.com/antlabs/quickws"
)

type handler struct{}

func (h *handler) OnOpen(c *quickws.Conn) {
 fmt.Printf("客户端连接成功\n")
}

func (h *handler) OnMessage(c *quickws.Conn, op quickws.Opcode, msg []byte) {
 // 如果msg的生命周期不是在OnMessage中结束,需要拷贝一份
 // newMsg := make([]byte, len(msg))
 // copy(newMsg, msg)

 fmt.Printf("收到服务端消息:%s\n", msg)
 c.WriteMessage(op, msg)
 time.Sleep(time.Second)
}

func (h *handler) OnClose(c *quickws.Conn, err error) {
 fmt.Printf("客户端端连接关闭:%v\n", err)
}

func main() {
 c, err := quickws.Dial("ws://127.0.0.1:8080/", quickws.WithClientCallback(&handler{}))
 if err != nil {
  fmt.Printf("连接失败:%v\n", err)
  return
 }

 c.WriteMessage(opcode.Text, []byte("hello"))
 c.ReadLoop()
}

返回

配置函数

客户端配置参数

配置header

func main() {
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientHTTPHeader(http.Header{
  "h1": "v1",
  "h2":"v2", 
 }))
}

返回

配置握手时的超时时间

func main() {
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientDialTimeout(2 * time.Second))
}

返回

配置自动回复ping消息

func main() {
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientReplyPing())
}

返回

配置socks5代理

import(
    "github.com/antlabs/quickws"
 "golang.org/x/net/proxy"
)

func main() {
    quickws.Dial("ws://127.0.0.1:12345", quickws.WithClientDialFunc(func() (quickws.Dialer, error) {
        return proxy.SOCKS5("tcp", "socks5代理服务地址", nil, nil)
    }))
}

返回

配置proxy代理

import(
    "github.com/antlabs/quickws"
)

func main() {

    proxy := func(*http.Request) (*url.URL, error) {
        return url.Parse("http://127.0.0.1:1007")
    }

    quickws.Dial("ws://127.0.0.1:12345", quickws.WithClientProxyFunc(proxy))
}

返回

配置客户端最大读message

func main() {
 // 限制客户端最大服务返回返回的最大包是1024,如果超过这个大小报错
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientReadMaxMessage(1024))
}

返回

配置客户端压缩和解压消息

func main() {
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientDecompressAndCompress())
}

返回

配置客户端上下文接管

func main() {
 quickws.Dial("ws://127.0.0.1:12345/test", quickws.WithClientContextTakeover())
}

返回

服务端配置参数

配置服务自动回复ping消息

func main() {
 c, err := quickws.Upgrade(w, r, quickws.WithServerReplyPing())
        if err != nil {
                fmt.Println("Upgrade fail:", err)
                return
        }   
}

返回

配置服务端最大读message

func main() {
 // 配置服务端读取客户端最大的包是1024大小, 超过该值报错
 c, err := quickws.Upgrade(w, r, quickws.WithServerReadMaxMessage(1024))
        if err != nil {
                fmt.Println("Upgrade fail:", err)
                return
        }   
}

返回

配置服务端解压消息

func main() {
 // 配置服务端读取客户端最大的包是1024大小, 超过该值报错
 c, err := quickws.Upgrade(w, r, quickws.WithServerDecompression())
        if err != nil {
                fmt.Println("Upgrade fail:", err)
                return
        }   
}

返回

配置服务端压缩和解压消息

func main() {
 c, err := quickws.Upgrade(w, r, quickws.WithServerDecompressAndCompress())
        if err != nil {
                fmt.Println("Upgrade fail:", err)
                return
        }   
}

返回

配置服务端上下文接管

func main() {
 // 配置服务端读取客户端最大的包是1024大小, 超过该值报错
 c, err := quickws.Upgrade(w, r, quickws.WithServerContextTakeover)
        if err != nil {
                fmt.Println("Upgrade fail:", err)
                return
        }   
}

返回

综合例子

https://github.com/antlabs/quickws-example

常见问题

1.为什么quickws不标榜zero upgrade?

第一:quickws 是基于 std 的方案实现的 websocket 协议。

第二:原因是 zero upgrade 对 websocket 的性能提升几乎没有影响(同步方式),所以 quickws 就没有选择花时间优化 upgrade 过程,

直接基于 net/http, websocket 的协议是整体符合大数定律,一个存活几秒的websocket协议由 upgrade(握手) frame(数据包) frame frame 。。。组成。

所以随着时间的增长, upgrade 对整体的影响接近于0,我们用数字代入下。

A: 代表 upgrade 可能会慢点,但是 frame 的过程比较快,比如基于 net/http 方案的 websocket

upgrade (100ms) frame(10ms) frame(10ms) frame(10ms) avg = 32.5ms

B: 代表主打zero upgrade的库,假如frame的过程处理慢点,

upgrade (90ms) frame(15ms) frame(15ms) frame(15ms) avg = 33.75ms

简单代入下已经证明了,决定 websocket 差距的是 frame 的处理过程,无论是tps还是内存占用 quickws 在实战中也会证明这个点。所以没有必须也不需要在 upgrade 下功夫,常规优化就够了。

2.quickws tps如何

在5800h的cpu上面,tps稳定在47w/s,接近48w/s。比gorilla使用ReadMessage的38.9w/s,快了近9w/s

quickws.1:
1s:357999/s 2s:418860/s 3s:440650/s 4s:453360/s 5s:461108/s 6s:465898/s 7s:469211/s 8s:470780/s 9s:472923/s 10s:473821/s 11s:474525/s 12s:475463/s 13s:476021/s 14s:476410/s 15s:477593/s 16s:477943/s 17s:478038/s
gorilla-linux-ReadMessage.4.1 
1s:271126/s 2s:329367/s 3s:353468/s 4s:364842/s 5s:371908/s 6s:377633/s 7s:380870/s 8s:383271/s 9s:384646/s 10s:385986/s 11s:386448/s 12s:386554/s 13s:387573/s 14s:388263/s 15s:388701/s 16s:388867/s 17s:389383/s
gorilla-linux-UseReader.4.2:
1s:293888/s 2s:377628/s 3s:399744/s 4s:413150/s 5s:421092/s 6s:426666/s 7s:430239/s 8s:432801/s 9s:434977/s 10s:436058/s 11s:436805/s 12s:437865/s 13s:438421/s 14s:438901/s 15s:439133/s 16s:439409/s 17s:439578/s 
gobwas.6:
1s:215995/s 2s:279405/s 3s:302249/s 4s:312545/s 5s:318922/s 6s:323800/s 7s:326908/s 8s:329977/s 9s:330959/s 10s:331510/s 11s:331911/s 12s:332396/s 13s:332418/s 14s:332887/s 15s:333198/s 16s:333390/s 17s:333550/s

3.quickws 流量测试数据如何 ?

在5800h的cpu上面, 同尺寸read buffer(4k), 对比默认用法,quickws在30s处理119GB数据,gorilla处理48GB数据。

  • quickws
quickws.windows.tcp.delay.4x:
Destination: [127.0.0.1]:9000
Interface lo address [127.0.0.1]:0
Using interface lo to connect to [127.0.0.1]:9000
Ramped up to 10000 connections.
Total data sent:     119153.9 MiB (124941915494 bytes)
Total data received: 119594.6 MiB (125404036361 bytes)
Bandwidth per channel: 6.625⇅ Mbps (828.2 kBps)
Aggregate bandwidth: 33439.980↓, 33316.752↑ Mbps
Packet rate estimate: 3174704.8↓, 2930514.7↑ (9↓, 34↑ TCP MSS/op)
Test duration: 30.001 s.
  • gorilla 使用ReadMessage取数据
gorilla-linux-ReadMessage.tcp.delay:
WARNING: Dumb terminal, expect unglorified output.
Destination: [127.0.0.1]:9003
Interface lo address [127.0.0.1]:0
Using interface lo to connect to [127.0.0.1]:9003
Ramped up to 10000 connections.
Total data sent:     48678.1 MiB (51042707521 bytes)
Total data received: 50406.2 MiB (52854715802 bytes)
Bandwidth per channel: 2.771⇅ Mbps (346.3 kBps)
Aggregate bandwidth: 14094.587↓, 13611.385↑ Mbps
Packet rate estimate: 1399915.6↓, 1190593.2↑ (6↓, 45↑ TCP MSS/op)
Test duration: 30 s.

4.内存占用如何 ?

quickws的特色之一是低内存占用。

1w连接的tps测试,1k payload 回写,初始内存占用约122MB, 在240s-260s之后大约86MB,

百万长链接测试

BenchType : BenchEcho
Framework : quickws
TPS : 108143
EER : -118.52
Min : 32.99us
Avg : 92.26ms
Max : 1.03s
TP50 : 48.37ms
TP75 : 53.88ms
TP90 : 215.18ms
TP95 : 430.07ms
TP99 : 502.95ms
Used : 18.49s
Total : 2000000
Success : 2000000
Failed : 0
Conns : 1000000
Concurrency: 10000
Payload : 1024
CPU Min : -520020.80%
CPU Avg : -912.44%
CPU Max : 220653.13%
MEM Min : 8.46G
MEM Avg : 8.47G
MEM Max : 8.47G