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package main
import (
"io"
"log"
"net/http"
"github.com/emicklei/go-restful"
)
// Cross-origin resource sharing (CORS) is a mechanism that allows JavaScript on a web page
// to make XMLHttpRequests to another domain, not the domain the JavaScript originated from.
//
// http://en.wikipedia.org/wiki/Cross-origin_resource_sharing
// http://enable-cors.org/server.html
//
// GET http://localhost:8080/users
//
// GET http://localhost:8080/users/1
//
// PUT http://localhost:8080/users/1
//
// DELETE http://localhost:8080/users/1
//
// OPTIONS http://localhost:8080/users/1 with Header "Origin" set to some domain and
type UserResource struct{}
func (u UserResource) RegisterTo(container *restful.Container) {
ws := new(restful.WebService)
ws.
Path("/users").
Consumes("*/*").
Produces("*/*")
ws.Route(ws.GET("/{user-id}").To(u.nop))
ws.Route(ws.POST("").To(u.nop))
ws.Route(ws.PUT("/{user-id}").To(u.nop))
ws.Route(ws.DELETE("/{user-id}").To(u.nop))
container.Add(ws)
}
func (u UserResource) nop(request *restful.Request, response *restful.Response) {
io.WriteString(response.ResponseWriter, "this would be a normal response")
}
func main() {
wsContainer := restful.NewContainer()
u := UserResource{}
u.RegisterTo(wsContainer)
// Add container filter to enable CORS
cors := restful.CrossOriginResourceSharing{
ExposeHeaders: []string{"X-My-Header"},
AllowedHeaders: []string{"Content-Type", "Accept"},
CookiesAllowed: false,
Container: wsContainer}
wsContainer.Filter(cors.Filter)
// Add container filter to respond to OPTIONS
wsContainer.Filter(wsContainer.OPTIONSFilter)
log.Printf("start listening on localhost:8080")
server := &http.Server{Addr: ":8080", Handler: wsContainer}
log.Fatal(server.ListenAndServe())
}
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