我从客户端发送“用户代理 header ”,但没有在服务器端接收,但当我使用浏览器时它可以工作。
服务器代码:
package main
import (
"crypto/tls"
"fmt"
"log"
"net/http"
"time"
)
const (
defaultServerDomain = "localhost:443"
certPemPath = "./selfsigned.crt"
privKeyPath = "./selfsigned.key"
)
func main() {
mux := http.NewServeMux()
mux.HandleFunc("/demo/echo", func(w http.ResponseWriter, req *http.Request) {
w.Header().Add("Strict-Transport-Security", "max-age=63072000; includeSubDomains")
w.Write([]byte("This is an example server.\n"))
fmt.Printf("\n\nUserAgent : %s", req.UserAgent())
})
cfg := &tls.Config{
MinVersion: tls.VersionTLS12,
CurvePreferences: []tls.CurveID{tls.CurveP521, tls.CurveP384, tls.CurveP256},
PreferServerCipherSuites: true,
CipherSuites: []uint16{
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
},
}
srv := &http.Server{
ReadHeaderTimeout: 2 * time.Second,
Addr: defaultServerDomain,
Handler: mux,
TLSConfig: cfg,
TLSNextProto: make(map[string]func(*http.Server, *tls.Conn, http.Handler), 0),
}
log.Fatal(srv.ListenAndServeTLS(certPemPath, privKeyPath))
}
客户端代码:
package main
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"log"
"net/http"
"os"
"time"
)
const (
serverDomain = "https://localhost:443/demo/echo"
certPemPath = "./selfsigned.crt"
)
func main() {
cert, err := os.ReadFile(certPemPath)
if err != nil {
log.Fatal(err)
}
certPool := x509.NewCertPool()
if ok := certPool.AppendCertsFromPEM(cert); !ok {
log.Fatalf("unable to parse cert from %s", certPemPath)
}
client := &http.Client{
Timeout: 2 * time.Second,
Transport: &http.Transport{
DisableKeepAlives: false,
TLSClientConfig: &tls.Config{
RootCAs: certPool,
},
},
}
r, err := http.NewRequest("GET", serverDomain, nil)
req, err := client.Do(r)
if err != nil {
log.Fatal(err)
}
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.7113.93 Safari/537.36")
defer req.Body.Close()
html, err := io.ReadAll(req.Body)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%v\n", req.Status)
fmt.Printf(string(html))
}
假设获取服务器端:
UserAgent:Mozilla/5.0(Windows NT 10.0;Win64;x64;rv:91.0)Gecko/20100101 Firefox/91.0 Waterfox/91.4.2
相反,我得到了这个:
用户代理:Go-http-client/1.1
但是当我在我的例子中使用 Waterfox 浏览器时,它就可以工作了
UserAgent:Mozilla/5.0(Windows NT 10.0;Win64;x64;rv:91.0)Gecko/20100101 Firefox/91.0 Waterfox/91.4.2
这与我使用的 selfsinged 证书的代码或证书有关吗
最佳答案
我认为问题很可能在这里:
r, err := http.NewRequest("GET", serverDomain, nil)
req, err := client.Do(r)
NewRequest
的定义是 func NewRequest(method, url string, body io.Reader) (*Request, error) 和 Client.Do
func (c *Client) Do(req *Request) (*Response, error)
。所以上面的代码可能更容易理解为:
req, err := http.NewRequest("GET", serverDomain, nil)
resp, err := client.Do(req) // This returns a response; not the request
当您调用 Do
时,就会发出请求(因此必须在此之前设置 header )。当您设置要调用 resp.Header.Set...
的 header 时,对您的代码进行上述改写(即您正在更改请求返回的 header ;而不是请求 header )。
在调用 Do
之前更改代码以设置 header ,即
req, err := http.NewRequest("GET", serverDomain, nil)
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.7113.93 Safari/537.36")
resp, err := client.Do(req)
注意:我尚未完整测试您的代码,因此可能存在其他问题
关于go - Http Over TLS Golang 未接收 header ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/72598797/