Golang web服务器在crypto/tls处泄漏内存。(*block).reserve

我有一个用Go写的web服务器。

tlsConfig := &tls.Config{
    PreferServerCipherSuites: true,
    MinVersion:               tls.VersionTLS12,
    CurvePreferences: []tls.CurveID{
        tls.CurveP256,
        tls.X25519,
    },
    CipherSuites: []uint16{
        tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
        tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
        tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
        tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
        tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
        tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
    },
}

s := &http.Server{
    ReadTimeout:  5 * time.Second,
    WriteTimeout: 10 * time.Second,
    IdleTimeout:  120 * time.Second,
    Handler:      r, // where r is my router
    TLSConfig:    tlsConfig,
}

// redirect http to https
redirect := &http.Server{
    ReadTimeout:  5 * time.Second,
    WriteTimeout: 10 * time.Second,
    IdleTimeout:  120 * time.Second,
    Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        w.Header().Set("Connection", "close")
        url := "https://" + r.Host + r.URL.String()
        http.Redirect(w, r, url, http.StatusMovedPermanently)
    }),
}
go func() {
    log.Fatal(redirect.ListenAndServe())
}()

log.Fatal(s.ListenAndServeTLS(certFile, keyFile))

这是我的数字海洋仪表板截图。

正如你所见,记忆一直在增长。所以我开始看 https://github.com/google/pprof . 下面是 top5 .

Type: inuse_space
Time: Nov 7, 2018 at 10:31am (CET)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top5
Showing nodes accounting for 289.50MB, 79.70% of 363.24MB total
Dropped 90 nodes (cum <= 1.82MB)
Showing top 5 nodes out of 88
      flat  flat%   sum%        cum   cum%
  238.98MB 65.79% 65.79%   238.98MB 65.79%  crypto/tls.(*block).reserve
   20.02MB  5.51% 71.30%    20.02MB  5.51%  crypto/tls.Server
   11.50MB  3.17% 74.47%    11.50MB  3.17%  crypto/aes.newCipher
   10.50MB  2.89% 77.36%    10.50MB  2.89%  crypto/aes.(*aesCipherGCM).NewGCM

SVG显示了crypto/tls(*block).reserve所分配的同样大的内存量。

这是确切的代码。

我花了最后几天阅读每一篇文章,文件,博客文章,源代码,帮助文件,我可以找到。但是没有任何帮助。代码在ubuntu17.10x64机器上运行,在Docker容器中使用Go 1.11。

服务器似乎没有关闭与客户端的连接。我想把所有的 xyzTimeout

编辑2018年12月20日:

https://github.com/golang/go/issues/28654#issuecomment-448477056