48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
package sockjs
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import (
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"fmt"
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"net/http"
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"time"
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)
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func xhrCors(rw http.ResponseWriter, req *http.Request) {
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header := rw.Header()
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origin := req.Header.Get("origin")
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if origin == "" || origin == "null" {
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origin = "*"
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}
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header.Set("Access-Control-Allow-Origin", origin)
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if allowHeaders := req.Header.Get("Access-Control-Request-Headers"); allowHeaders != "" && allowHeaders != "null" {
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header.Add("Access-Control-Allow-Headers", allowHeaders)
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}
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header.Add("Access-Control-Allow-Credentials", "true")
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}
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func xhrOptions(rw http.ResponseWriter, req *http.Request) {
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rw.Header().Set("Access-Control-Allow-Methods", "OPTIONS, POST")
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rw.WriteHeader(http.StatusNoContent) // 204
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}
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func cacheFor(rw http.ResponseWriter, req *http.Request) {
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rw.Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", 365*24*60*60))
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rw.Header().Set("Expires", time.Now().AddDate(1, 0, 0).Format(time.RFC1123))
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rw.Header().Set("Access-Control-Max-Age", fmt.Sprintf("%d", 365*24*60*60))
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}
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func noCache(rw http.ResponseWriter, req *http.Request) {
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rw.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0")
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}
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func welcomeHandler(rw http.ResponseWriter, req *http.Request) {
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rw.Header().Set("content-type", "text/plain;charset=UTF-8")
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fmt.Fprintf(rw, "Welcome to SockJS!\n")
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}
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func httpError(w http.ResponseWriter, error string, code int) {
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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w.WriteHeader(code)
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fmt.Fprintf(w, error)
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}
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