CODEWITHSUNDEEP
httpgo
Ram
Ram

Reputation: 1193

How to add custom http header in go fasthttp ?

I am using a fasthttp server https://github.com/valyala/fasthttp

I need to add a custom header for all requests 

Access-Control-Allow-Origin: *

How can I do this ?

Upvotes: 1

Views: 2948

Answers (3)

mdemir
mdemir

Reputation: 112

To enable CORS support on fasthttp, better use fasthttpcors package.

import (
    ...
    cors "github.com/AdhityaRamadhanus/fasthttpcors"
    ...
)

func main() {
    ...

    withCors := cors.NewCorsHandler(cors.Options{
        AllowMaxAge: math.MaxInt32,
    })

    log.Fatal(fasthttp.ListenAndServe(":8080", withCors.CorsMiddleware(router.HandleRequest)))
}

Upvotes: 0

fallaway
fallaway

Reputation: 459

Another option if you are not using Context:

func setResponseHeader(h http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        w.Header().Set("Access-Control-Allow-Origin", "*")
        h.ServeHTTP(w, r)
    }
}

setResponseHeader is essentially a decorator of the argument HandlerFunc h. When you assemble your routes, you can do something like this:

http.HandleFunc("/api/endpoint", setResponseHeader(myHandlerFunc)) 
http.ListenAndServe(":8000", nil)

Upvotes: 0

Vadyus
Vadyus

Reputation: 1329

Since it's a response header i assume you mean this:

ctx.Response.Header.Set("Access-Control-Allow-Origin", "*")

Upvotes: 4

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