Recipes.java 文件源码

/**
 * Returns a full HTTP response with the specified status, content type, and custom headers.
 *
 * <p>Headers should be specified as a map of strings. For example, to allow CORS, add the
 * following key and value: "access-control-allow-origin", "http://foo.example"
 *
 * <p>If content type or content length are passed in as custom headers, they will be ignored.
 * Instead, content type will be as specified by the parameter contentType and content length will
 * be the length of the parameter contentLength.
 */
public static FullHttpResponse newResponse(
    HttpResponseStatus status,
    ByteBuf payload,
    ContentType contentType,
    Map<String, String> customHeaders) {
  FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status, payload);

  if (customHeaders != null) {
    for (Map.Entry<String, String> entry : customHeaders.entrySet()) {
      response.headers().set(entry.getKey(), entry.getValue());
    }
  }

  response.headers().set(CONTENT_TYPE, contentType.value);
  response.headers().setInt(CONTENT_LENGTH, payload.readableBytes());

  return response;
}