英文:
Unexpected EOF using Go http client
问题
我正在学习Go，并遇到了这个问题。
我只是使用HTTP客户端下载网页内容：
package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
)
func main() {
client := &http.Client{}
req, err := http.NewRequest("GET", "https://mail.ru/", nil)
req.Close = true
response, err := client.Do(req)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
fmt.Println(err)
}
fmt.Println(string(content)[:100])
}
当读取响应体时，我遇到了一个"unexpected EOF"错误。与此同时，content变量中包含了完整的页面内容。
只有当我下载https://mail.ru/的内容时才会出现这个错误。对于其他URL，一切正常，没有任何错误。
我使用curl下载这个页面的内容时一切正常。
我有点困惑 - 这里发生了什么？
Go版本为v1.2，在Ubuntu和MacOS X上尝试过。
英文:
I am learning Go and came across this problem.
I am just downloading web page content using HTTP client:
package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
)
func main() {
client := &http.Client{}
req, err := http.NewRequest("GET", "https://mail.ru/", nil)
req.Close = true
response, err := client.Do(req)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
fmt.Println(err)
}
fmt.Println(string(content)[:100])
}
I get an unexpected EOF error when reading response body. At the same time content variable has full page content.
This error appear only when I downloading https://mail.ru/ content. With other URLs everything works fine - without any errors.
I used curl for downloading this page content - everything works as expected.
I am confused a bit - what's happening here?
Go v1.2, tried on Ubuntu and MacOS X
答案1
得分: 9
看起来那个服务器（Apache 1.3，哇！）正在提供一个被截断的gzip响应。如果你明确请求identity编码（防止Go传输添加gzip），你就不会得到ErrUnexpectedEOF错误：
req.Header.Add("Accept-Encoding", "identity")
英文:
It looks like the that server (Apache 1.3, wow!) is serving up a truncated gzip response. If you explicitly request the identity encoding (preventing the Go transport from adding gzip itself), you won't get the ErrUnexpectedEOF:
req.Header.Add("Accept-Encoding", "identity")
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