Function extractToken

utils.go:29–55

Looks for auth token in query string, then headers, then cookies

(tokenName string, r *http.Request)

// Looks for auth token in query string, then headers, then cookies
func extractToken(tokenName string, r *http.Request) (string, error) {

	query := r.URL.Query()

	queryToken := query.Get(tokenName)
	if queryToken != "" {
		return queryToken, nil
	}

	tokenHeader := r.Header.Get(tokenName)
	if tokenHeader != "" {
		return tokenHeader, nil
	}

	authHeader := r.Header.Get("Authorization")
	if authHeader != "" {
		tokenHeader := strings.Split(authHeader, " ")[1]
		return tokenHeader, nil
	}

	tokenCookie, err := r.Cookie(tokenName)
	if err == nil {
		return tokenCookie.Value, nil
	}

	return "", errors.New("No token found")
}

const chars string = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"