Gin The key of the response header is changed to lowercase, how to keep the response same as set

golang version: go1.18.3 linux/amd64 gin version: v1.8.1 nodejs version: 16.15.1 vue version: 2.6.12 axios version: 0.24.0

I set up some response headers like this: ctx.Writer.Header().Set("SM-Encrypted", "true") ctx.Writer.Header().Set("SM-Timestamp", timestamp) ctx.Writer.Header().Set("SM-Key", key) ctx.Writer.Header().Set("SM-Check-Code", checkCode)

However, the key of the response header on the chrome console print results is all lowercase： connection: close content-length: 299 content-type: application/json; charset=utf-8 date: Fri, 04 Nov 2022 03:19:23 GMT sm-check-code: 7ff15cd19ce8e390e4b3b5927b5e8a3c94323cc28dbab70d9c327a47e1a79c4e sm-encrypted: true sm-key: 0123456789abcdef sm-timestamp: 1667531963217 X-Powered-By: Express

Is this correct？I want to return the same result as I set. What do I need to do?

Comment From: liuliqiang

• go version: go version go1.18.7 darwin/amd64
• gin version: github.com/gin-gonic/gin v1.8.1

with codes:

func ginMain() {
    router := gin.Default()
    router.GET("/", func(c *gin.Context) {
        c.Writer.Header().Set("SM-Encrypted", "true")
        c.Writer.Header().Set("SM-Timestamp", "1")
        c.JSON(http.StatusOK, map[string]string{})
    })
    http.ListenAndServe(":8080", router)
}

seems can't reproduce:

And From the content you provided, seems like this response came from Express as there has a header: X-Powered-By: Express.

Comment From: Cookiery

Sorry, I don't reproduce you question too. Maybe it happend in other way.