Utils.java 文件源码

/**
 * Returns the security permission required for the given details.
 * If method is CONNECT, then uri must be of form "scheme://host:port"
 */
static URLPermission getPermission(URI uri,
                                   String method,
                                   Map<String, List<String>> headers) {
    StringBuilder sb = new StringBuilder();

    String urlstring, actionstring;

    if (method.equals("CONNECT")) {
        urlstring = uri.toString();
        actionstring = "CONNECT";
    } else {
        sb.append(uri.getScheme())
                .append("://")
                .append(uri.getAuthority())
                .append(uri.getPath());
        urlstring = sb.toString();

        sb = new StringBuilder();
        sb.append(method);
        if (headers != null && !headers.isEmpty()) {
            sb.append(':');
            Set<String> keys = headers.keySet();
            boolean first = true;
            for (String key : keys) {
                if (!first) {
                    sb.append(',');
                }
                sb.append(key);
                first = false;
            }
        }
        actionstring = sb.toString();
    }
    return new URLPermission(urlstring, actionstring);
}