diff --git a/.clang-format b/.clang-format
index 7626823..c7a6a80 100644
--- a/.clang-format
+++ b/.clang-format
@@ -11,7 +11,7 @@ ReflowComments: true
 SpacesBeforeTrailingComments: 3
 TabWidth: 4
 ConstructorInitializerAllOnOneLineOrOnePerLine: true
-ColumnLimit: 1100
+ColumnLimit: 110
 AllowShortBlocksOnASingleLine: Never
 AllowShortFunctionsOnASingleLine: None
 AllowShortEnumsOnASingleLine: false
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0446fa8..1e8b489 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,10 @@ project(transm LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+if (MSVC)
+    add_compile_options(/source-charset:utf-8)
+endif()
+
 set(CMAKE_DEBUG_POSTFIX "d")
 message(STATUS "System: ${CMAKE_SYSTEM_NAME}")
 message(STATUS "Compiler CXX ID: ${CMAKE_CXX_COMPILER_ID}")
diff --git a/client/client.cpp b/client/client.cpp
index 4e8adcd..b7a0df8 100644
--- a/client/client.cpp
+++ b/client/client.cpp
@@ -1,9 +1,12 @@
 #include "client.h"
 #include <iostream>
+#include <of_str.h>
 
+using namespace ofen;
 CClient::CClient(const std::shared_ptr<spdlog::logger>& logger) : logger_(logger)
 {
     client_ = std::make_shared<CTcpClient>(io_context_, logger_);
+    supported_.push_back("GetTaskList");
 }
 
 CClient::~CClient()
@@ -12,14 +15,62 @@ CClient::~CClient()
 
 void CClient::run()
 {
-    std::thread thread([this]() { io_context_.run(); });
+    if (!client_->connect("127.0.0.1", "8080")) {
+        logger_->info("{} connect err.", __FUNCTION__);
+        return;
+    }
+    client_->register_func([&](CFrameBuffer* buf) { handle_data(buf); });
+    client_->async_recv();
+    std::thread thread([&]() { io_context_.run(); });
     char line[512]{};
     while (std::cin.getline(line, 512)) {
+        std::string cmd_input(line);
         if (std::strstr(line, "end")) {
             break;
         }
+        auto vec = COfStr::split(cmd_input, " ");
+        if (vec.size() < 2) {
+            logger_->error("input's invalid format.");
+            continue;
+        }
+        auto cmd = vec[0];
+        if (cmd == "GetTaskList") {
+            bool ret = get_task_list();
+            logger_->info("exec GetTaskList Command result is:{}.", ret);
+        }
     }
     client_->disconnect();
     thread.join();
     logger_->info("{} exit.", __FUNCTION__);
 }
+
+bool CClient::get_task_list()
+{
+    logger_->info("{} start.", __FUNCTION__);
+    char* send = nullptr;
+    int len{};
+    std::shared_ptr<CFrameBuffer> buf = std::make_shared<CFrameBuffer>();
+    buf->data_ = new char[512]{};
+    auto flen = std::snprintf(buf->data_, 512, "%s", gGetTaskList);
+    buf->len_ = flen;
+    buf->type_ = 1;
+    if (!CTransProtocal::pack(buf.get(), &send, len)) {
+        logger_->error("{} pack failed.", __FUNCTION__);
+        return false;
+    }
+    if (!client_->send(send, len)) {
+        return false;
+    }
+    delete[] send;
+    return true;
+}
+
+void CClient::handle_data(CFrameBuffer* buf)
+{
+    if (buf == nullptr) {
+        logger_->error("{} nullptr.", __FUNCTION__);
+        return;
+    }
+    logger_->debug("type: {}", buf->type_);
+    logger_->debug("len: {}", buf->len_);
+}
diff --git a/client/client.h b/client/client.h
index f445fd2..afb9600 100644
--- a/client/client.h
+++ b/client/client.h
@@ -1,6 +1,8 @@
 #pragma once
 #include <net_base.h>
 #include <util.h>
+#include <vector>
+#include <string>
 
 class CClient
 {
@@ -11,8 +13,15 @@ public:
 public:
     void run();
 
+public:
+    bool get_task_list();
+
+private:
+    void handle_data(CFrameBuffer* buf);
+
 private:
     std::shared_ptr<spdlog::logger> logger_;
     asio::io_context io_context_;
     std::shared_ptr<CTcpClient> client_;
+    std::vector<std::string> supported_;
 };
\ No newline at end of file
diff --git a/net/net_base.cpp b/net/net_base.cpp
index 17b8b35..f36a91f 100644
--- a/net/net_base.cpp
+++ b/net/net_base.cpp
@@ -1,11 +1,89 @@
 #include "net_base.h"
 
-CTcpServer::CTcpServer()
+CTcpServer::CTcpServer(asio::io_context& io_context, const std::shared_ptr<spdlog::logger>& logger)
+    : io_context_(io_context), logger_(logger), acceptor_(io_context)
+{
+}
+CTcpServer::~CTcpServer()
 {
 }
 
-CTcpServer::~CTcpServer()
+bool CTcpServer::Start(unsigned short port)
 {
+    asio::ip::tcp::endpoint endpoint(asio::ip::tcp::v4(), port);
+    try {
+        acceptor_.open(endpoint.protocol());
+        acceptor_.set_option(asio::socket_base::reuse_address(true));
+        acceptor_.bind(endpoint);
+        acceptor_.listen();
+    } catch (const asio::system_error& e) {
+        logger_->error("Failed to bind to {}: {}", endpoint.address().to_string(), e.what());
+        return false;
+    }
+
+    Accept();
+    logger_->info("Server started on port {}", port);
+    return true;
+}
+
+void CTcpServer::Stop()
+{
+    acceptor_.close();
+    std::lock_guard<std::mutex> lock(mutex_);
+    for (auto& [key, thread] : client_threads_) {
+        if (thread.joinable()) {
+            thread.join();
+        }
+    }
+    client_threads_.clear();
+}
+
+void CTcpServer::Accept()
+{
+    auto socket = std::make_shared<asio::ip::tcp::socket>(io_context_);
+    acceptor_.async_accept(*socket, [this, socket](const asio::error_code& error) {
+        if (!error) {
+            auto endpoint = socket->remote_endpoint();
+            std::string client_key = endpoint.address().to_string() + ":" + std::to_string(endpoint.port());
+            logger_->info("New connection from {}", client_key);
+
+            {
+                std::lock_guard<std::mutex> lock(mutex_);
+                client_map_[client_key] = 0;   // Initial value as 0
+            }
+
+            client_threads_[client_key] = std::thread(&CTcpServer::HandleClient, this, socket, client_key);
+        }
+        Accept();
+    });
+}
+
+void CTcpServer::HandleClient(std::shared_ptr<asio::ip::tcp::socket> socket, const std::string& client_key)
+{
+    try {
+        char data[1024];
+        while (true) {
+            asio::error_code error;
+            size_t length = socket->read_some(asio::buffer(data), error);
+            if (error == asio::error::eof) {
+                logger_->info("Connection closed by client: {}", client_key);
+                break;
+            } else if (error) {
+                throw asio::system_error(error);
+            }
+            auto relen = socket->send(asio::buffer(data, length));
+            logger_->info("Received data from {}, len={}, relen={}", client_key, length, relen);
+        }
+    } catch (std::exception& e) {
+        logger_->error("Error with client {}: {}", client_key, e.what());
+    }
+
+    std::lock_guard<std::mutex> lock(mutex_);
+    client_map_.erase(client_key);
+    if (client_threads_.find(client_key) != client_threads_.end()) {
+        client_threads_.at(client_key).detach();
+        client_threads_.erase(client_key);
+    }
 }
 
 CTcpClient::CTcpClient(asio::io_context& io_context, const std::shared_ptr<spdlog::logger>& logger)
@@ -55,7 +133,7 @@ bool CTcpClient::send(const char* data, int len)
     }
 }
 
-void CTcpClient::register_func(ExFun_t& f)
+void CTcpClient::register_func(ExFun_t&& f)
 {
     fun_ = f;
 }
@@ -64,6 +142,7 @@ void CTcpClient::async_recv()
 {
     auto self(shared_from_this());
     socket_.async_read_some(asio::buffer(tmp_buf_), [this, self](std::error_code ec, std::size_t length) {
+        logger_->debug("{} {}", __FUNCTION__, ec.message());
         if (!ec) {
             std::lock_guard<std::mutex> lock(mutex_);
             buffer_.push(tmp_buf_.data(), length);
diff --git a/net/net_base.h b/net/net_base.h
index 95f133a..fef0cff 100644
--- a/net/net_base.h
+++ b/net/net_base.h
@@ -11,8 +11,24 @@ using ExFun_t = std::function<void(CFrameBuffer* buf)>;
 class CTcpServer
 {
 public:
-    CTcpServer();
+    CTcpServer(asio::io_context& io_context, const std::shared_ptr<spdlog::logger>& logger);
     ~CTcpServer();
+
+public:
+    bool Start(unsigned short port);
+    void Stop();
+
+private:
+    void Accept();
+    void HandleClient(std::shared_ptr<asio::ip::tcp::socket> socket, const std::string& client_key);
+
+private:
+    asio::io_context& io_context_;
+    asio::ip::tcp::acceptor acceptor_;
+    std::shared_ptr<spdlog::logger> logger_;
+    std::map<std::string, int> client_map_;
+    std::map<std::string, std::thread> client_threads_;
+    std::mutex mutex_;
 };
 
 class CTcpClient : public std::enable_shared_from_this<CTcpClient>
@@ -25,7 +41,7 @@ public:
     bool connect(const std::string& host, const std::string& port);
     void disconnect();
     bool send(const char* data, int len);
-    void register_func(ExFun_t& f);
+    void register_func(ExFun_t&& f);
     void async_recv();
 
 private:
diff --git a/ofen b/ofen
index 0f7a8d3..1427bf4 160000
--- a/ofen
+++ b/ofen
@@ -1 +1 @@
-Subproject commit 0f7a8d3c928ef93c6250fa048b5c1cda2e42ed57
+Subproject commit 1427bf4bca2c0f52429fe751c4c205acfd78b326
diff --git a/server/CMakeLists.txt b/server/CMakeLists.txt
index d77fc59..315e6f0 100644
--- a/server/CMakeLists.txt
+++ b/server/CMakeLists.txt
@@ -3,8 +3,8 @@ cmake_minimum_required(VERSION 3.16)
 project(transms LANGUAGES CXX)
 
 if (MSVC)
-    add_definitions(-D_WIN32_WINNT=0x0601)
     add_compile_options(/source-charset:utf-8)
 endif()
 
-add_executable(transms main.cpp)
\ No newline at end of file
+add_executable(transms main.cpp server.h server.cpp)
+target_link_libraries(transms PRIVATE trans_net trans_util)
\ No newline at end of file
diff --git a/server/main.cpp b/server/main.cpp
index 74d43e4..7cb0076 100644
--- a/server/main.cpp
+++ b/server/main.cpp
@@ -1,8 +1,11 @@
 #include <iostream>
+#include "server.h"
 
+std::shared_ptr<spdlog::logger> g_Logger = nullptr;
 int main()
 {
-
-
+    g_Logger = get_logger("server", "server.log");
+    CServer server(g_Logger);
+    server.run();
     return 0;
 }
\ No newline at end of file
diff --git a/server/server.cpp b/server/server.cpp
new file mode 100644
index 0000000..1599a46
--- /dev/null
+++ b/server/server.cpp
@@ -0,0 +1,24 @@
+#include "server.h"
+
+CServer::CServer(const std::shared_ptr<spdlog::logger>& logger)
+    : logger_(logger)
+{
+    server_ = std::make_shared<CTcpServer>(io_context_, logger);
+}
+
+CServer::~CServer()
+{
+}
+
+void CServer::run()
+{
+    if (!server_->Start(8080)) {
+        return;
+    }
+    io_context_.run();
+}
+
+bool CServer::get_task_list()
+{
+    return false;
+}
diff --git a/server/server.h b/server/server.h
new file mode 100644
index 0000000..363603c
--- /dev/null
+++ b/server/server.h
@@ -0,0 +1,24 @@
+#pragma once
+#include <net_base.h>
+#include <util.h>
+#include <vector>
+#include <string>
+
+class CServer
+{
+public:
+    CServer(const std::shared_ptr<spdlog::logger>& logger);
+    ~CServer();
+
+public:
+    void run();
+
+public:
+    bool get_task_list();
+
+private:
+    std::shared_ptr<spdlog::logger> logger_;
+    asio::io_context io_context_;
+    std::shared_ptr<CTcpServer> server_;
+    std::vector<std::string> supported_;
+};
\ No newline at end of file
diff --git a/test2.cpp b/test2.cpp
index 891f761..64505bc 100644
--- a/test2.cpp
+++ b/test2.cpp
@@ -5,13 +5,16 @@ std::shared_ptr<spdlog::logger> g_Logger;
 
 void TestHandle(CFrameBuffer* buf)
 {
-    g_Logger->info("type: {}", buf->type_);   
-    g_Logger->info("len: {}", buf->len_);   
-    g_Logger->info("{} exec. 中文测试", __FUNCTION__);
+    std::string chinese_test("中文测试");
+    g_Logger->debug("type: {}", buf->type_);
+    g_Logger->info("len: {}", buf->len_);
+    g_Logger->warn("{} exec. {} 1", __FUNCTION__, chinese_test);
+    g_Logger->error("{} exec. {} 2", __FUNCTION__, chinese_test);
 }
 
 int main()
 {
+    // setlocale(LC_ALL, ".utf-8");
     char buffer[] = "Java";
     g_Logger = get_logger("test1", "test1.log");
     asio::io_context io_context;
@@ -19,9 +22,8 @@ int main()
     if (!client->connect("127.0.0.1", "8080")) {
         return -1;
     }
-    client->send(buffer, sizeof(buffer));
-    std::function<void(CFrameBuffer*)> func = TestHandle;
-    client->register_func(func);
+    //client->send(buffer, sizeof(buffer));
+    client->register_func([](CFrameBuffer* buf) { TestHandle(buf); });
     client->async_recv();
     std::thread t([&io_context]() { io_context.run(); });
     char line[512]{};
diff --git a/util/util.cpp b/util/util.cpp
index c310555..92d1d49 100644
--- a/util/util.cpp
+++ b/util/util.cpp
@@ -7,10 +7,11 @@ std::shared_ptr<spdlog::logger> get_logger(const std::string& mark, const std::s
     auto file_sink = std::make_shared<spdlog::sinks::rotating_file_sink_mt>(log_file, 1024 * 50, 3);
     auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
     file_sink->set_pattern("[%Y-%m-%d %H:%M:%S.%e][%l]: %v");
-    console_sink->set_pattern("[%Y-%m-%d %H:%M:%S.%e][%l]: %v");
+    console_sink->set_color(spdlog::level::level_enum::info, 0xFFFF);
+    console_sink->set_pattern("%^[%Y-%m-%d %H:%M:%S.%e][%l]: %v%$");
     std::vector<spdlog::sink_ptr> sinks{file_sink, console_sink};
     auto logger = std::make_shared<spdlog::logger>(mark, sinks.begin(), sinks.end());
-    logger->set_level(spdlog::level::info);
+    logger->set_level(spdlog::level::debug);
     spdlog::register_logger(logger);
     return logger;
 }
@@ -27,6 +28,7 @@ CTransProtocal::~CTransProtocal()
 【 transm TCP 数据协议 】
     header 2 char: 0xFF 0xFE
     type   2 char:
+    mark   1 char:
     len    4 char:
     data    xxxxx:
     tail   2 char: 0xFF 0xFF
@@ -42,8 +44,9 @@ CFrameBuffer* CTransProtocal::parse(CMutBuffer& buffer)
         return result;
     }
     int16_t type = *(reinterpret_cast<const int16_t*>(buffer.get_data() + find + 2));
-    int32_t len = *(reinterpret_cast<const int32_t*>(buffer.get_data() + find + 2 + sizeof(int16_t)));
-    int32_t tail_index = find + 2 + sizeof(int16_t) + sizeof(int32_t) + len;
+    char mark = *(buffer.get_data() + find + 2 + 2);
+    int32_t len = *(reinterpret_cast<const int32_t*>(buffer.get_data() + find + 2 + 2 + 1));
+    int32_t tail_index = find + 2 + 2 + 1 + 4 + len;
     if (buffer.get_len() - 2 < tail_index || len < 0) {
         return result;
     }
@@ -56,7 +59,7 @@ CFrameBuffer* CTransProtocal::parse(CMutBuffer& buffer)
     result->data_ = new char[len];
     result->len_ = len;
     std::memset(result->data_, 0x0, len);
-    std::memcpy(result->data_, buffer.get_data() + find + 2 + sizeof(int16_t) + sizeof(int32_t), len);
+    std::memcpy(result->data_, buffer.get_data() + find + 2 + 2 + 1 + 4, len);
     buffer.remove_of(0, tail_index + 2);
     return result;
 }
@@ -68,12 +71,13 @@ bool CTransProtocal::pack(CFrameBuffer* buf, char** out_buf, int& len)
     }
     unsigned char header[] = {0xFF, 0xFE};
     unsigned char tail[] = {0xFF, 0xFF};
-    len = buf->len_ + 10;
+    len = buf->len_ + 11;
     *out_buf = new char[len];
     std::memcpy(*out_buf, header, 2);
     std::memcpy(*out_buf + 2, &buf->type_, 2);
-    std::memcpy(*out_buf + 4, &buf->len_, 4);
-    std::memcpy(*out_buf + 8, buf->data_, buf->len_);
+    std::memcpy(*out_buf + 2 + 2, &buf->mark_, 1);
+    std::memcpy(*out_buf + 2 + 2 + 1, &buf->len_, 4);
+    std::memcpy(*out_buf + 2 + 2 + 1 + 4, buf->data_, buf->len_);
     std::memcpy(*out_buf + len - 2, tail, 2);
     return true;
 }
diff --git a/util/util.h b/util/util.h
index ac97876..d34b4b1 100644
--- a/util/util.h
+++ b/util/util.h
@@ -1,9 +1,11 @@
 #pragma once
+#include "of_util.h"
+#include <cstdint>
 #include <spdlog/sinks/rotating_file_sink.h>
 #include <spdlog/sinks/stdout_color_sinks.h>
 #include <spdlog/spdlog.h>
-#include "of_util.h"
-#include <cstdint>
+
+constexpr auto gGetTaskList = "GetTaskList";
 
 using namespace ofen;
 std::shared_ptr<spdlog::logger> get_logger(const std::string& mark, const std::string& log_file);
@@ -12,16 +14,19 @@ class CFrameBuffer
 public:
     CFrameBuffer();
     ~CFrameBuffer();
+
 public:
     int16_t type_{};
     char* data_{};
     int len_{};
+    char mark_{};
 };
 
 /*
 【 transm TCP 数据协议 】
     header 2 char: 0xFF 0xFE
-    type   2 char: 
+    type   2 char:
+    mark   1 char:
     len    4 char:
     data    xxxxx:
     tail   2 char: 0xFF 0xFF
@@ -31,6 +36,7 @@ class CTransProtocal
 public:
     CTransProtocal();
     ~CTransProtocal();
+
 public:
     static CFrameBuffer* parse(CMutBuffer& buffer);
     static bool pack(CFrameBuffer* buf, char** out_buf, int& len);