在Go中,我可以在请求重定向时检查响应吗? [英] In Go, can I check response when the request is redirected?
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问题描述
我们可以注册 CheckRedirect ,以在请求重定向时检查下一个请求。有没有一种方法可以在第一次请求被重定向时得到响应?
目前实现的方式是,似乎没有可能在默认情况下查看响应(除非您自己实现 Do()
)。
请参阅 src / net / http /client.go#L384-L399
:
if shouldRedirect(resp.StatusCode ){
//读取正文,如果很小,基础TCP连接将被重新使用。
//无需检查错误:如果失败,传输将无法重复使用。
const maxBodySlurpSize = 2<< 10
如果resp.ContentLength == -1 || resp.ContentLength< = maxBodySlurpSize {
io.CopyN(ioutil.Discard,resp.Body,maxBodySlurpSize)
}
resp.Body.Close()
如果urlStr = resp .Header.Get( 位置); urlStr =={
err = fmt.Errorf(%d响应丢失位置标题,resp.StatusCode)
break
}
ase = req.URL
via = append(via,req)
continue
}
We can register CheckRedirect to check the next request when the request is redirected. Is there a way that I can get the response for the first request when it's redirected?
解决方案
The way it is currently implemented, it doesn't seem possible to have a look at the response by default (unless you implement yourself what Do()
does).
See src/net/http/client.go#L384-L399
:
if shouldRedirect(resp.StatusCode) {
// Read the body if small so underlying TCP connection will be re-used.
// No need to check for errors: if it fails, Transport won't reuse it anyway.
const maxBodySlurpSize = 2 << 10
if resp.ContentLength == -1 || resp.ContentLength <= maxBodySlurpSize {
io.CopyN(ioutil.Discard, resp.Body, maxBodySlurpSize)
}
resp.Body.Close()
if urlStr = resp.Header.Get("Location"); urlStr == "" {
err = fmt.Errorf("%d response missing Location header", resp.StatusCode)
break
}
base = req.URL
via = append(via, req)
continue
}
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