HTTP客户端,空闲超时 [英] HTTP client, idle timeout
本文介绍了HTTP客户端,空闲超时的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
空闲超时是指从HTTP客户端内部调用Conn接口的Read / Write方法的超时时间。它在客户端下载文件时很有用,而且由于读取超时已到,下载失败。
net.Dialer
,它返回一个 net.Conn
,它设置适当的读写期限。 Conn
看起来像这样: // Conn包装一个net.Conn,并为每个读取的
//设置一个最后期限并写入操作。
类型Conn结构{
net.Conn
ReadTimeout time.Duration
WriteTimeout time.Duration
}
func(c * Conn)读取(b []字节)(int,错误){
err:= c.Conn.SetReadDeadline(time.Now().Add(c.ReadTimeout))
if err!= nil {
返回0,err
}
返回c.Conn.Read(b)
}
func(c * Conn)写(b []字节)(int,error){
err:= c.Conn.SetWriteDeadline(time.Now().Add(c.WriteTimeout))
if err!= nil {
return 0, err
}
return c.Conn.Write(b)
}
How to make idle timeout in Go HTTP client?
Idle timeout means timeout on calling Read/Write methods of Conn interface from HTTP client internals. It can be useful when client downloads file and in some moment downloading fails because read timeout reached.
解决方案
You need to create your own net.Dialer
, that returns a net.Conn
which sets the appropriate read and write deadlines.
The Conn
would look something like this:
// Conn wraps a net.Conn, and sets a deadline for every read
// and write operation.
type Conn struct {
net.Conn
ReadTimeout time.Duration
WriteTimeout time.Duration
}
func (c *Conn) Read(b []byte) (int, error) {
err := c.Conn.SetReadDeadline(time.Now().Add(c.ReadTimeout))
if err != nil {
return 0, err
}
return c.Conn.Read(b)
}
func (c *Conn) Write(b []byte) (int, error) {
err := c.Conn.SetWriteDeadline(time.Now().Add(c.WriteTimeout))
if err != nil {
return 0, err
}
return c.Conn.Write(b)
}
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