From ff54d8f02022d05783629f325766596cd055374a Mon Sep 17 00:00:00 2001
From: p8keuqptb <2096779240@qq.com>
Date: Mon, 30 Dec 2024 19:55:54 +0800
Subject: [PATCH] ADD file via upload

---
 src%2Fserver/WFDnsServer.h | 70 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src%2Fserver/WFDnsServer.h

diff --git a/src%2Fserver/WFDnsServer.h b/src%2Fserver/WFDnsServer.h
new file mode 100644
index 0000000..25c2ae8
--- /dev/null
+++ b/src%2Fserver/WFDnsServer.h
@@ -0,0 +1,70 @@
+/*
+  Copyright (c) 2021 Sogou, Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+  Authors: Liu Kai (liukaidx@sogou-inc.com)
+*/
+
+#ifndef _WFDNSSERVER_H_
+#define _WFDNSSERVER_H_
+
+#include "DnsMessage.h"    // 引入 DNS 消息相关的头文件
+#include "WFServer.h"      // 引入服务器功能的头文件
+#include "WFTaskFactory.h" // 引入任务工厂以创建 DNS 任务
+
+// 定义一个 dns_process_t 类型，它是一个接受 WFDnsTask 指针并返回 void 的函数对象
+using dns_process_t = std::function<void (WFDnsTask *)>;
+
+// 定义 WFDnsServer 类型，基于 WFServer 模板类，使用 DnsRequest 和 DnsResponse 作为协议
+using WFDnsServer = WFServer<protocol::DnsRequest, protocol::DnsResponse>;
+
+// 设置 DNS 服务器的默认参数
+static constexpr struct WFServerParams DNS_SERVER_PARAMS_DEFAULT =
+{
+	.transport_type			=	TT_UDP,                // 传输类型为 UDP
+	.max_connections		=	2000,                   // 最大连接数
+	.peer_response_timeout	=	10 * 1000,             // 对端响应超时时间
+	.receive_timeout		=	-1,                     // 接收超时时间，-1 表示不超时
+	.keep_alive_timeout		=	300 * 1000,            // 保持连接的超时时间
+	.request_size_limit		=	(size_t)-1,            // 请求大小限制，-1 表示无限制
+	.ssl_accept_timeout		=	5000,                  // SSL 接受超时时间
+};
+
+// WFDnsServer 构造函数的特化模板
+template<> inline
+WFDnsServer::WFServer(dns_process_t proc) :
+	WFServerBase(&DNS_SERVER_PARAMS_DEFAULT), // 调用基类构造函数，传入默认参数
+	process(std::move(proc))                  // 移动构造函数以提高性能
+{
+}
+
+// 创建新的会话，重写基类方法
+template<> inline
+CommSession *WFDnsServer::new_session(long long seq, CommConnection *conn)
+{
+	WFDnsTask *task;
+
+	// 使用任务工厂创建一个新的 DNS 任务
+	task = WFServerTaskFactory::create_dns_task(this, this->process);
+	// 设置保持连接的超时时间
+	task->set_keep_alive(this->params.keep_alive_timeout);
+	// 设置接收超时时间
+	task->set_receive_timeout(this->params.receive_timeout);
+	// 设置请求大小限制
+	task->get_req()->set_size_limit(this->params.request_size_limit);
+
+	return task; // 返回创建的任务
+}
+
+#endif // _WFDNSSERVER_H_