diff --git a/.gitignore b/.gitignore
index 543823a..ea62484 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 bin/
 build/
 lib/
-core*
\ No newline at end of file
+protobuf/
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50251c1..7d7cdb7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,18 +2,22 @@ cmake_minimum_required(VERSION 3.0)
 
 project(tinyrpc)
 
+# set(CMAKE_CXX_STANDARD 14)
+
 enable_language(CXX ASM)
 
-add_compile_options(-g -Wall -std=c++11)
+add_compile_options(-g -Wall -std=c++17)
 
 include_directories(includes/coroutine)
 include_directories(includes/log)
 include_directories(includes/net)
 include_directories(includes/net/tcp)
+include_directories(includes/net/tinypb)
 
 aux_source_directory(${CMAKE_SOURCE_DIR}/src/coroutine COROUTINE_SRC_LIST)
 aux_source_directory(${CMAKE_SOURCE_DIR}/src/net NET_SRC_LIST)
 aux_source_directory(${CMAKE_SOURCE_DIR}/src/net/tcp TCP_SRC_LIST)
+aux_source_directory(${CMAKE_SOURCE_DIR}/src/net/tinypb TINYPB_SRC_LIST)
 
 
 set(ASM_FILES ${CMAKE_SOURCE_DIR}/src/coroutine/coctx_swap.S)
@@ -28,6 +32,7 @@ add_library(tinyrpc
         ${COROUTINE_SRC_LIST}
         ${TCP_SRC_LIST}
         ${NET_SRC_LIST}
+        ${TINYPB_SRC_LIST}
         ${ASM_FILES} 
 )
 
@@ -39,4 +44,5 @@ add_executable(test_tinyrpc
 )
 
 target_link_libraries(test_tinyrpc PRIVATE tinyrpc)
-target_link_libraries(test_tinyrpc PUBLIC stdc++)
\ No newline at end of file
+target_link_libraries(test_tinyrpc PUBLIC protobuf)
+target_link_libraries(test_tinyrpc PUBLIC stdc++)
diff --git a/includes/net/abstract_coder.hpp b/includes/net/abstract_coder.hpp
new file mode 100644
index 0000000..15c92bf
--- /dev/null
+++ b/includes/net/abstract_coder.hpp
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "tcp_buffer.hpp"
+#include <cstdint>
+#include <netinet/in.h>
+
+
+namespace tinyrpc {
+
+    struct AbstractData {
+        AbstractData() = default;
+        virtual ~AbstractData() = default;
+    };
+
+
+    class AbstractCoder {
+    public:
+        AbstractCoder() = default;
+        virtual ~AbstractCoder() = default;
+
+        virtual bool encoder(TcpBuffer& buffer, AbstractData& data) = 0; // 编码
+
+        virtual bool decoder(TcpBuffer& buffer, AbstractData& data) = 0; // 解码
+
+        // virtual std::string getProtocalType() = 0;
+    private:
+
+    
+
+    };
+
+    inline int32_t getInt32FromNetByte(char& buf) {
+        int32_t tmp;
+        memcpy(&tmp, &buf, sizeof(tmp));
+        return ntohl(tmp);
+    }
+
+}
\ No newline at end of file
diff --git a/includes/net/abstract_dispatcher.hpp b/includes/net/abstract_dispatcher.hpp
new file mode 100644
index 0000000..dd38442
--- /dev/null
+++ b/includes/net/abstract_dispatcher.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "abstract_coder.hpp"
+#include "tcp_connection.hpp"
+
+namespace tinyrpc {
+
+
+    class AbstractDispatcher {
+    public:
+        AbstractDispatcher() = default;
+        virtual ~AbstractDispatcher() = default;
+        virtual void dispatcher(TcpConnection& conn, AbstractData& data, AbstractData& respond) = 0;
+       
+    private:
+
+    
+
+    };
+}
\ No newline at end of file
diff --git a/includes/net/error_code.hpp b/includes/net/error_code.hpp
new file mode 100644
index 0000000..1a3becc
--- /dev/null
+++ b/includes/net/error_code.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+namespace tinyrpc {
+
+enum ErrorCode {
+    ERROR_PEER_CLOSED, // connect when peer close
+    ERROR_FAILED_CONNECT, // failed to connection peer host
+    ERROR_FAILED_GET_REPLY, // failed to get server reply
+    ERROR_FAILED_DESERIALIZE, // deserialize failed
+    ERROR_FAILED_SERIALIZE, // serialize failed
+
+    ERROR_FAILED_ENCODE, // encode failed
+    ERROR_FAILED_DECODE, // decode failed
+
+    ERROR_RPC_CALL_TIMEOUT, // call rpc timeout
+
+    ERROR_SERVICE_NOT_FOUND, // not found service name
+
+    ERROR_METHOD_NOT_FOUND, // not found method
+
+    ERROR_PARSE_SERVICE_NAME, // not found service name
+    ERROR_ASYNC_RPC_CALL_SINGLE_IOTHREAD, // not supoort async rpc call when only have single iothread
+
+};
+
+}
\ No newline at end of file
diff --git a/includes/net/tcp/io_thread.hpp b/includes/net/tcp/io_thread.hpp
index d801771..b36f597 100644
--- a/includes/net/tcp/io_thread.hpp
+++ b/includes/net/tcp/io_thread.hpp
@@ -1,7 +1,6 @@
 #pragma once
 #include "reactor.hpp"
 #include "tcp_connection.hpp"
-#include <atomic>
 #include <mutex>
 #include <thread>
 #include <unordered_map>
@@ -9,11 +8,11 @@
 #include <vector>
 
 namespace tinyrpc {
-
+    class TcpServer;
     class IOThread {
         friend  class IOThreadPool;
     public:
-        void addClient(int fd);
+        void addClient(TcpServer* ser, int fd);
         static IOThread* getThisIoThread();
         // void removeFd(int fd);
         Reactor* getReactor() {return m_reactor;}
diff --git a/includes/net/tcp/tcp_connection.hpp b/includes/net/tcp/tcp_connection.hpp
index eed07df..b456f67 100644
--- a/includes/net/tcp/tcp_connection.hpp
+++ b/includes/net/tcp/tcp_connection.hpp
@@ -1,12 +1,13 @@
 #pragma once
 
+#include "abstract_coder.hpp"
 #include "coroutine.hpp"
 #include "fd_event.hpp"
 #include "reactor.hpp"
 #include "tcp_buffer.hpp"
 
-namespace tinyrpc {
-
+namespace tinyrpc { 
+    class TcpServer;
     class TcpConnection {
     public:
         enum class State{
@@ -14,9 +15,9 @@ namespace tinyrpc {
             Connected
         };
 
-
+        
     public:
-        TcpConnection(int fd, Reactor* reactor);
+        TcpConnection(int fd, Reactor& reactor, TcpServer& ser);
         void clearClient();
         void mainLoopFun();
 
@@ -34,7 +35,8 @@ namespace tinyrpc {
         State m_state{State::Connected};
         TcpBuffer m_writeBuffer{};
         TcpBuffer m_readBuffer{};
-        Reactor* m_reactor{};
+        Reactor& m_reactor;
+        TcpServer& m_server; 
     };
 
 }
\ No newline at end of file
diff --git a/includes/net/tcp/tcp_server.hpp b/includes/net/tcp/tcp_server.hpp
index ef91ebf..460e5c3 100644
--- a/includes/net/tcp/tcp_server.hpp
+++ b/includes/net/tcp/tcp_server.hpp
@@ -1,4 +1,6 @@
 #pragma once
+#include "abstract_coder.hpp"
+#include "abstract_dispatcher.hpp"
 #include "coroutine.hpp"
 #include "io_thread.hpp"
 #include "net_address.hpp"
@@ -22,7 +24,10 @@ namespace tinyrpc {
         TcpServer();
         TcpServer(const NetAddress& addr);
         TcpServer(const std::string& ip, uint16_t port);
+        ~TcpServer();
         void start();
+        AbstractCoder& getCoder() {return *m_coder;}
+        AbstractDispatcher& getDispatcher() {return *m_dispatcher;}
     private:
         void mainAcceptCorFun();
     private:
@@ -34,6 +39,8 @@ namespace tinyrpc {
         // int m_conn_cnt{0};
         // IOThread m_ioThread{};
         IOThreadPool m_ioThreadPool{4};
+        AbstractCoder* m_coder{};
+        AbstractDispatcher* m_dispatcher{};
     };
 
 }
\ No newline at end of file
diff --git a/includes/net/tinypb/tinypb_coder.hpp b/includes/net/tinypb/tinypb_coder.hpp
new file mode 100644
index 0000000..6f6a4a7
--- /dev/null
+++ b/includes/net/tinypb/tinypb_coder.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include "abstract_coder.hpp"
+namespace tinyrpc {
+
+    class TinypbCoder : public AbstractCoder {
+    public:
+        TinypbCoder();
+        ~TinypbCoder();
+        bool encoder(TcpBuffer& buffer, AbstractData& data) override; // 编码
+        bool decoder(TcpBuffer& buffer, AbstractData& data) override; // 解码
+    private:
+
+
+    };
+
+
+
+}
\ No newline at end of file
diff --git a/includes/net/tinypb/tinypb_data.hpp b/includes/net/tinypb/tinypb_data.hpp
new file mode 100644
index 0000000..ac86985
--- /dev/null
+++ b/includes/net/tinypb/tinypb_data.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+
+#include "abstract_coder.hpp"
+#include <cstdint>
+#include <string>
+
+namespace tinyrpc {
+
+    struct TinypbData : public AbstractData {
+        
+        TinypbData() {};
+        ~TinypbData() {};
+        
+        // char start = 0x02;                      // indentify start of a TinyPb protocal data
+        int32_t pk_len {0};                 // len of all package(include start char and end char)
+        int32_t msg_req_len {0};            // len of msg_req
+        std::string msg_req;                // msg_req, which identify a request 
+        int32_t service_name_len {0};       // len of service full name
+        std::string service_full_name;      // service full name, like QueryService.query_name
+        int32_t err_code {0};               // err_code, 0 -- call rpc success, otherwise -- call rpc failed. it only be seted by RpcController
+        int32_t err_info_len {0};           // len of err_info
+        std::string err_info;               // err_info, empty -- call rpc success, otherwise -- call rpc failed, it will display details of reason why call rpc failed. it only be seted by RpcController
+        std::string pb_data;                // business pb data
+        int32_t check_num {-1};             // check_num of all package. to check legality of data
+        // char end = 0x03;                        // identify end of a TinyPb protocal data
+    };
+
+
+
+}
\ No newline at end of file
diff --git a/includes/net/tinypb/tinypb_dispatcher.hpp b/includes/net/tinypb/tinypb_dispatcher.hpp
new file mode 100644
index 0000000..7575aa7
--- /dev/null
+++ b/includes/net/tinypb/tinypb_dispatcher.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "abstract_dispatcher.hpp"
+#include <unordered_map>
+#include <google/protobuf/message.h>
+#include <google/protobuf/service.h>
+#include <google/protobuf/descriptor.h>
+
+namespace tinyrpc {
+
+    class TinypbDispatcher : public AbstractDispatcher {
+        using Service = google::protobuf::Service;
+    public:
+        TinypbDispatcher();
+        ~TinypbDispatcher();
+        void dispatcher(TcpConnection& conn, AbstractData& data, AbstractData& respond) override;
+        bool parseServiceFullName(const std::string& name, std::string& serviceName, std::string& methodName);
+    private:
+        std::unordered_map<std::string, Service*> m_service_map;
+
+    };
+
+
+
+}
\ No newline at end of file
diff --git a/src/net/tcp/io_thread.cc b/src/net/tcp/io_thread.cc
index 6255b2c..521470a 100644
--- a/src/net/tcp/io_thread.cc
+++ b/src/net/tcp/io_thread.cc
@@ -3,6 +3,7 @@
 #include "reactor.hpp"
 #include "coroutine.hpp"
 #include "tcp_connection.hpp"
+#include "tcp_server.hpp"
 #include <memory>
 #include <mutex>
 #include <thread>
@@ -23,9 +24,9 @@ namespace tinyrpc {
 
 
 
-    void IOThread::addClient(int fd) {
+    void IOThread::addClient(TcpServer* ser, int fd) {
      
-        m_clients[fd] = std::make_shared<TcpConnection>(fd, m_reactor);
+        m_clients[fd] = std::make_shared<TcpConnection>(fd, *m_reactor, *ser);
 
     }
 
diff --git a/src/net/tcp/tcp_connection.cc b/src/net/tcp/tcp_connection.cc
index 70ce853..45419b9 100644
--- a/src/net/tcp/tcp_connection.cc
+++ b/src/net/tcp/tcp_connection.cc
@@ -1,26 +1,31 @@
 #include "tcp_connection.hpp"
+#include "abstract_coder.hpp"
 #include "coroutine_hook.hpp"
 #include "fd_event.hpp"
 #include "logger.hpp"
 #include "reactor.hpp"
+#include "tcp_server.hpp"
+#include "tinypb_data.hpp"
 #include <cerrno>
 #include <cstring>
+#include <memory>
 #include <pthread.h>
 #include <unistd.h>
 
 
 namespace tinyrpc {
-    TcpConnection::TcpConnection(int fd, Reactor* reactor)  : 
+    TcpConnection::TcpConnection(int fd, Reactor& reactor, TcpServer& ser)  : 
         m_fdEvent(FdEventPool::getInstance()->getFdEvent(fd)), 
         m_mainCoroutine(std::bind(&TcpConnection::mainLoopFun, this)),
-        m_reactor(reactor)
+        m_reactor(reactor),
+        m_server(ser)
     {
         Reactor::Task task = [this] {
             logger() << "conn coroutine is resume";
             m_mainCoroutine.resume();
         };
 
-        reactor->addTask(task, true);
+        reactor.addTask(task, true);
 
     }
 
@@ -36,7 +41,7 @@ namespace tinyrpc {
     void TcpConnection::clearClient() {
         logger() << "clearClient";
         m_state = State::Disconnected;
-        m_reactor->delFdEvent(m_fdEvent);
+        m_reactor.delFdEvent(m_fdEvent);
         m_fdEvent->reset();
         close(m_fdEvent->getFd());
     }
@@ -110,17 +115,31 @@ namespace tinyrpc {
     
     void TcpConnection::process() {
         logger() << "process";
-        if(m_state == State::Disconnected) {
-            return;
-        }
-        if(m_writeBuffer.getWriteable() < m_readBuffer.getReadable()) {
-            m_writeBuffer.resize(m_readBuffer.getReadable() * 2);
-        }
-        std::memcpy(m_writeBuffer.getWriteAddress(), m_readBuffer.getReadAddress(), m_readBuffer.getReadable());
-        m_writeBuffer.writeOffset(m_readBuffer.getReadable());
-        m_readBuffer.readOffset(m_readBuffer.getReadable());
+        // if(m_state == State::Disconnected) {
+        //     return;
+        // }
+        // if(m_writeBuffer.getWriteable() < m_readBuffer.getReadable()) {
+        //     m_writeBuffer.resize(m_readBuffer.getReadable() * 2);
+        // }
+        // std::memcpy(m_writeBuffer.getWriteAddress(), m_readBuffer.getReadAddress(), m_readBuffer.getReadable());
+        // m_writeBuffer.writeOffset(m_readBuffer.getReadable());
+        // m_readBuffer.readOffset(m_readBuffer.getReadable());
         
-        logger() << "write data " << m_writeBuffer.getReadable()  << " byte";
+        // logger() << "write data " << m_writeBuffer.getReadable()  << " byte";
+    
+        while(m_readBuffer.getReadable() > 0) {
+            std::unique_ptr<AbstractData> data(new TinypbData);
+
+            bool ret = m_server.getCoder().decoder(m_readBuffer, *data);
+            if(ret == false) {
+                logger() << "decode error";
+                break;
+            }
+            std::unique_ptr<AbstractData> resp(new TinypbData);
+            m_server.getDispatcher().dispatcher(*this, *data,  *resp);
+            
+        }
+    
     }
 
     TcpConnection::~TcpConnection() {
diff --git a/src/net/tcp/tcp_server.cc b/src/net/tcp/tcp_server.cc
index 7e705f9..40f0c5b 100644
--- a/src/net/tcp/tcp_server.cc
+++ b/src/net/tcp/tcp_server.cc
@@ -5,6 +5,8 @@
 #include "coroutine_hook.hpp"
 #include "net_address.hpp"
 #include "reactor.hpp"
+#include "tinypb_coder.hpp"
+#include "tinypb_dispatcher.hpp"
 #include <cerrno>
 #include <cstring>
 #include <netinet/in.h>
@@ -58,21 +60,25 @@ namespace tinyrpc {
     }
 
 
-    TcpServer::TcpServer() : 
-        m_accept_cor(std::bind(&TcpServer::mainAcceptCorFun, this)),
-        m_acceptor(NetAddress())
-    {
-        m_acceptor.init();
-    }
+
     TcpServer::TcpServer(const NetAddress& addr) : 
         m_accept_cor(std::bind(&TcpServer::mainAcceptCorFun, this)),
-        m_acceptor(addr)
+        m_acceptor(addr),
+        m_coder(new TinypbCoder),
+        m_dispatcher(new TinypbDispatcher)
     {
         m_acceptor.init();
     }
 
-    TcpServer::TcpServer(const std::string& ip, uint16_t port) : TcpServer(NetAddress(ip, port)) {
+    TcpServer::TcpServer() : 
+        TcpServer(NetAddress("127.0.0.1", 9001)) {}
 
+    TcpServer::TcpServer(const std::string& ip, uint16_t port) : 
+        TcpServer(NetAddress(ip, port)) {}
+
+    TcpServer::~TcpServer() {
+        delete m_coder;
+        delete m_dispatcher;
     }
 
     void TcpServer::start() {
@@ -93,7 +99,7 @@ namespace tinyrpc {
             logger() << "new connect fd = " << fd;
             
             logger() << " 添加 fd 到子 reactor 中 " << fd;
-            m_ioThreadPool.getIOThread()->addClient(fd);
+            m_ioThreadPool.getIOThread()->addClient(this, fd);
         }
         
     }
diff --git a/src/net/tinypb/tinypb_coder.cc b/src/net/tinypb/tinypb_coder.cc
new file mode 100644
index 0000000..b931b63
--- /dev/null
+++ b/src/net/tinypb/tinypb_coder.cc
@@ -0,0 +1,215 @@
+#include "tinypb_coder.hpp"
+#include "abstract_coder.hpp"
+#include "tinypb_data.hpp"
+#include <cstdint>
+#include <cstring>
+#include <memory>
+#include <netinet/in.h>
+#include <new>
+#include <vector>
+
+
+namespace tinyrpc {
+
+    static const char PB_START = 0x02;     // start char
+    static const char PB_END = 0x03;      // end char
+    static const int MSG_REQ_LEN = 20;    // default length of msg_req
+
+    TinypbCoder::TinypbCoder() {
+        // TODO
+    }
+    TinypbCoder::~TinypbCoder() {
+        // TODO
+    }
+    bool  TinypbCoder::encoder(TcpBuffer& buffer, AbstractData& data)  {
+        TinypbData& pbdata = dynamic_cast<TinypbData&>(data);
+        if(pbdata.msg_req.empty()) return false;
+        if(pbdata.service_full_name.empty()) return false;
+        if(pbdata.pb_data.empty()) return false;
+        // TODO msg_req 处理
+
+        int32_t pk_len = 2 * sizeof(char) + 6 * sizeof(int32_t)
+                    + pbdata.pb_data.length() + pbdata.service_full_name.length()
+                    + pbdata.msg_req.length() + pbdata.err_info.length();
+
+        std::unique_ptr<char[]> buf(new char[pk_len + 1]{});
+        
+        int cur_index = 0;
+        buf[cur_index++] = PB_START;
+        int32_t pk_len_net = htonl(pk_len);
+
+        memcpy(&buf[cur_index], &pk_len_net, sizeof(pk_len_net));
+        cur_index += sizeof(pk_len_net);
+
+        int32_t msg_req_len = pbdata.msg_req.length();
+        int32_t msg_req_len_net = htonl(msg_req_len);
+        memcpy(&buf[cur_index], &msg_req_len_net, sizeof(msg_req_len_net));
+        cur_index += sizeof(msg_req_len_net);
+        memcpy(&buf[cur_index], pbdata.msg_req.c_str(), msg_req_len);
+        cur_index += msg_req_len;
+
+        int32_t service_name_len = pbdata.service_full_name.length();
+        int32_t service_name_len_net = htonl(service_name_len);
+        memcpy(&buf[cur_index], &service_name_len_net, sizeof(service_name_len_net));
+        cur_index += sizeof(service_name_len_net);
+        memcpy(&buf[cur_index], pbdata.msg_req.c_str(), service_name_len);
+        cur_index += service_name_len;
+
+        int32_t err_code = pbdata.err_code;
+        int32_t err_code_net = htonl(err_code);
+        memcpy(&buf[cur_index], &err_code_net, sizeof(err_code_net));
+        cur_index += sizeof(err_code_net);
+
+        int32_t err_info_len = pbdata.err_info.length();
+        int32_t err_info_len_net = htonl(err_info_len);
+        memcpy(&buf[cur_index], &err_info_len_net, sizeof(err_info_len_net));
+        cur_index += sizeof(err_info_len_net);
+        memcpy(&buf[cur_index], pbdata.err_info.c_str(), err_info_len);
+        cur_index += err_info_len;
+        
+        int32_t pb_data_len = pbdata.err_info.length();
+        memcpy(&buf[cur_index], pbdata.pb_data.c_str(), pb_data_len);
+        cur_index += pb_data_len;
+
+        int32_t check_num = 1;
+        int32_t check_num_net = htonl(check_num);
+        memcpy(&buf[cur_index], &check_num_net, sizeof(check_num_net));
+        cur_index += sizeof(check_num_net);
+
+        buf[cur_index++] = PB_END;
+
+        memcpy(buffer.getWriteAddress(), buf.get(), pk_len);
+
+        return true;
+
+    }
+
+    bool TinypbCoder::decoder(TcpBuffer& buffer, AbstractData& data) {
+        
+        char* buff = static_cast<char*>(buffer.getReadAddress());
+
+        int start_index = -1;
+        int end_index = -1;
+        bool isFullPack = false;
+        int pack_len = -1;
+
+        for(int i = 0; i < buffer.getReadable(); i++) {
+            if(buff[i] == PB_START) {
+
+                if(i + 1 >= buffer.getReadable()) {
+                    return false; // 包不完整
+                }
+
+                pack_len = getInt32FromNetByte(buff[i + 1]);
+                end_index  = pack_len + i - 1;
+
+                if(end_index >= buffer.getReadable()) {
+                    continue;
+                }
+
+                if(buff[end_index] == PB_END) {
+                    isFullPack = true;
+                    start_index = i;
+                    break;
+                }
+
+                
+            }
+        }
+
+        if(isFullPack == false) {
+            return false; // 包不完整
+        }
+
+        TinypbData& pbdata = dynamic_cast<TinypbData&>(data);
+        pbdata.pk_len = pack_len;
+        
+        int cur_index = start_index + sizeof(char) + sizeof(int32_t);
+
+        if (cur_index > end_index) {
+            return false;
+        }
+        
+        pbdata.msg_req_len =  getInt32FromNetByte(buff[cur_index]);
+        cur_index = cur_index + sizeof(int32_t);
+
+        if (cur_index > end_index || cur_index + pbdata.msg_req_len - 1 > end_index) {
+            return false;
+        }
+
+        std::unique_ptr<char[]> msg_req(new char[pbdata.msg_req_len + 1]{});
+        memcpy(&msg_req[0], &buff[cur_index], pbdata.msg_req_len);
+
+        pbdata.msg_req = std::string(msg_req.get());
+
+        cur_index = cur_index + pbdata.msg_req_len;
+
+        if (cur_index > end_index || cur_index + sizeof(int32_t) - 1 > end_index) {
+            return false;
+        }
+
+        pbdata.service_name_len = getInt32FromNetByte(buff[cur_index]);
+
+        if (pbdata.service_name_len > pack_len) {
+            return false;
+        }
+
+        cur_index = cur_index + sizeof(int32_t);
+
+        if (cur_index > end_index || cur_index +  pbdata.service_name_len - 1 >end_index) {
+            return false;
+        }
+
+        std::unique_ptr<char[]> service_name(new char[pbdata.service_name_len + 1]{});
+        memcpy(&service_name[0], &buff[cur_index], pbdata.service_name_len);
+
+        pbdata.service_full_name = std::string(service_name.get());
+
+        cur_index = cur_index + pbdata.service_name_len; 
+    
+        if(cur_index > end_index || cur_index + sizeof(int32_t) - 1 > end_index) {
+            return false;
+        }
+
+        pbdata.err_code = getInt32FromNetByte(buff[cur_index]);
+    
+        cur_index = cur_index + sizeof(int32_t);
+
+        if(cur_index > end_index || cur_index + sizeof(int32_t) - 1 > end_index) {
+            return false;
+        }
+
+        pbdata.err_info_len = getInt32FromNetByte(buff[cur_index]);
+
+        cur_index = cur_index + sizeof(int32_t);
+
+        if(cur_index > end_index || cur_index + pbdata.err_info_len - 1 > end_index) {
+            return false;
+        }
+
+        std::unique_ptr<char[]> err_info(new char[pbdata.err_info_len + 1]{});
+
+        memcpy(&err_info[0], &buff[cur_index], pbdata.err_info_len);
+
+        pbdata.err_info = std::string(err_info.get());
+
+        int pb_data_len = pbdata.pk_len 
+                      - pbdata.service_name_len - pbdata.msg_req_len - pbdata.err_info_len
+                      - 2 * sizeof(char) - 6 * sizeof(int32_t);
+
+        cur_index = cur_index + pbdata.err_info_len;
+        
+        if(cur_index > end_index || cur_index + pb_data_len - 1 > end_index) {
+            return false;
+        }
+
+
+        pbdata.pb_data = std::string(&buff[cur_index], pb_data_len);
+
+
+
+        return true;
+    }
+
+}
+
diff --git a/src/net/tinypb/tinypb_dispatcher.cc b/src/net/tinypb/tinypb_dispatcher.cc
new file mode 100644
index 0000000..1a94dd4
--- /dev/null
+++ b/src/net/tinypb/tinypb_dispatcher.cc
@@ -0,0 +1,61 @@
+#include "tinypb_dispatcher.hpp"
+#include "logger.hpp"
+#include "tinypb_data.hpp"
+#include "error_code.hpp"
+#include <sstream>
+
+namespace tinyrpc {
+    TinypbDispatcher::TinypbDispatcher() {}
+        // TODO
+    TinypbDispatcher::~TinypbDispatcher() {
+
+    }
+    void TinypbDispatcher::dispatcher(TcpConnection& conn, AbstractData& data, AbstractData& resp) {
+        logger() << "dispatcher";
+        TinypbData& pbdata = dynamic_cast<TinypbData&>(data);
+        TinypbData& respond = dynamic_cast<TinypbData&>(resp);
+        std::string service_name;
+        std::string method_name;
+
+        respond.service_full_name = pbdata.service_full_name;
+        respond.msg_req = pbdata.msg_req;
+        bool ret = parseServiceFullName(pbdata.service_full_name, service_name, method_name);
+        if(ret == false) {
+            respond.err_code = ERROR_PARSE_SERVICE_NAME;
+            std::stringstream ss;
+            ss << "not found service_name:[" << service_name << "]"; 
+            respond.err_info = ss.str();
+            return;
+        }
+
+        auto it = m_service_map.find(service_name);
+
+        if (it == m_service_map.end() || !((*it).second)) {
+            respond.err_code = ERROR_SERVICE_NOT_FOUND;
+            std::stringstream ss;
+            ss << "not found service_name:[" << service_name << "]"; 
+            respond.err_info = ss.str();
+            return;
+
+        }
+
+        Service* service = it->second;
+
+        const google::protobuf::MethodDescriptor* method = service->GetDescriptor()->FindMethodByName(method_name);
+    }
+
+    bool TinypbDispatcher::parseServiceFullName(const std::string& name, std::string& serviceName, std::string& methodName)  {
+        if(name.empty()) return false;
+
+        auto pos = name.find(".");
+        if(pos == std::string::npos) return false;
+        serviceName = name.substr(0, pos);
+        methodName = name.substr(pos + 1);
+
+        logger() << "serviceName=" << serviceName;
+        logger() << "methodName=" << methodName;
+        return true;
+    }
+
+}
+