frame/g: issue g.client Can we add a method for customizing request header types

[wisonlau]

Description

#3758

我在这个问题里面提到,如果我想避免请求头首字母被改变,只能用go官方的方法.gf官方的包能不能出多一个方法兼容.

Additional

No response

[gqcn]

@wisonlau 你好，

• 首先，在HTTP协议中，规范化的Header Key是首字母大写的，并且使用英文词连接符号-连接多个单词。
• 其次，在goframe的gclient包中，是通过标准库的HTTP Header Set方法来设置的Header，具体源码在这里

  gf/net/gclient/gclient_request.go

  Line 329 in 183395f

  req.Header.Set(k, v)

• 最后，如果实在是想要自定义与众不同的Header，那么可以考虑使用gclient的前置中间件来实现，具体请参考文档 https://goframe.org/pages/viewpage.action?pageId=7301625
• 此外，给你一个示例吧：

package main

import (
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/gclient"
	"net/http"
)

func main() {
	c := g.Client()
	c.Use(func(c *gclient.Client, r *http.Request) (resp *gclient.Response, err error) {
		// 注意这里不要使用r.Header.Set方法设置Header，会被标准化转换为规范的Header Key
		r.Header["userid"] = []string{"10000"}
		resp, err = c.Next(r)
		return resp, err
	})
}

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---

@wisonlau Hello,

• First of all, in the HTTP protocol, the standardized Header Key is capitalized, and the English word connection symbol - is used to connect multiple words.
• Secondly, in the gclient package of goframe, the Header is set through the HTTP Header Set method of the standard library. The specific source code is here https://github.com/gogf/gf/blob/ 183395f/net/gclient/gclient_request.go#L329
• Finally, if you really want to customize a unique Header, you can consider using the gclient front-end middleware to implement it. For details, please refer to the document https://goframe.org/pages/viewpage.action ?pageId=7301625
• Also, let me give you an example:

package main

import (
"github.com/gogf/gf/v2/frame/g"
"github.com/gogf/gf/v2/net/gclient"
"net/http"
)

func main() {
c := g.Client()
c.Use(func(c *gclient.Client, r *http.Request) (resp *gclient.Response, err error) {
// Be careful not to use the r.Header.Set method to set the Header here. It will be standardized and converted into a standard Header Key.
r.Header["userid"] = []string{"10000"}
resp, err = c.Next(r)
return resp, err
})
}