带缓存的HTTP 代理服务器(9)

最新推荐文章于 2024-07-16 22:54:10 发布

原创最新推荐文章于 2024-07-16 22:54:10 发布 · 1k 阅读

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本文深入探讨了Go语言中http包在资源限定方面的强大功能，包括如何配置服务器监听地址、处理请求超时、设置响应超时、限制请求头部大小等关键参数。通过实例代码展示如何灵活使用这些特性来优化网络应用性能。

HTTP资源限定 go中自带的http包真是非常好，封装了一些资源限定的服务器和接口。

type Server struct {
    Addr           string        // TCP address to listen on, ":http" if empty
    Handler        Handler       // handler to invoke, http.DefaultServeMux if nil
    ReadTimeout    time.Duration // maximum duration before timing out read of the request
    WriteTimeout   time.Duration // maximum duration before timing out write of the response
    MaxHeaderBytes int           // maximum size of request headers, DefaultMaxHeaderBytes if 0
    TLSConfig      *tls.Config   // optional TLS config, used by ListenAndServeTLS

    // TLSNextProto optionally specifies a function to take over
    // ownership of the provided TLS connection when an NPN
    // protocol upgrade has occurred.  The map key is the protocol
    // name negotiated. The Handler argument should be used to
    // handle HTTP requests and will initialize the Request's TLS
    // and RemoteAddr if not already set.  The connection is
    // automatically closed when the function returns.
    TLSNextProto map[string]func(*Server, *tls.Conn, Handler)

    // ConnState specifies an optional callback function that is
    // called when a client connection changes state. See the
    // ConnState type and associated constants for details.
    ConnState func(net.Conn, ConnState)

    // ErrorLog specifies an optional logger for errors accepting
    // connections and unexpected behavior from handlers.
    // If nil, logging goes to os.Stderr via the log package's
    // standard logger.
    ErrorLog *log.Logger
    // contains filtered or unexported fields
}

这个server中有三个重要参数，用于资源限定：

    ReadTimeout    time.Duration // maximum duration before timing out read of the request
    WriteTimeout   time.Duration // maximum duration before timing out write of the response
    MaxHeaderBytes int           // maximum size of request headers, DefaultMaxHeaderBytes if 0