我如何在Ubuntu 14.04上安装pybonjour(How do I install pybonjour on Ubuntu 14.04)

 默认的http.Transport过快地打开和关闭连接。 由于所有连接都是相同的主机：端口组合，因此需要增加MaxIdleConnsPerHost以匹配MaxIdleConnsPerHost的值。 否则，传输将经常关闭额外的连接，只是让它们立即重新打开。 
 
 您可以在默认传输上全局设置： 
 
http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = numCoroutines
 
 或者在创建自己的运输时 
 
t := &http.Transport{
    Proxy: http.ProxyFromEnvironment,
    DialContext: (&net.Dialer{
        Timeout:   30 * time.Second,
        KeepAlive: 30 * time.Second,
    }).DialContext,
    MaxIdleConnsPerHost:   numCoroutines,
    MaxIdleConns:          100,
    IdleConnTimeout:       90 * time.Second,
    TLSHandshakeTimeout:   10 * time.Second,
    ExpectContinueTimeout: 1 * time.Second,
}
 
 类似的问题： 去http.Get，并发，和“由同行重置连接” 

The default http.Transport is opening and closing connections too quickly. Since all connections are to the same host:port combination, you need to increase MaxIdleConnsPerHost to match your value for num_coroutines. Otherwise, the transport will frequently close the extra connections, only to have them reopened immediately.
 
You can set this globally on the default transport:
 
http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = numCoroutines
 
Or when creating your own transport
 
t := &http.Transport{
    Proxy: http.ProxyFromEnvironment,
    DialContext: (&net.Dialer{
        Timeout:   30 * time.Second,
        KeepAlive: 30 * time.Second,
    }).DialContext,
    MaxIdleConnsPerHost:   numCoroutines,
    MaxIdleConns:          100,
    IdleConnTimeout:       90 * time.Second,
    TLSHandshakeTimeout:   10 * time.Second,
    ExpectContinueTimeout: 1 * time.Second,
}
 
Similar question: Go http.Get, concurrency, and "Connection reset by peer"