ACE入门学习之创建简单的服务器端和客户端

ACE入门学习之创建简单的服务器端和客户端

ACE自适配通行环境(Adaptive Communicatin Environment)是面向对象的框架和工具包。它为通信软件实现了核心的并发和分布式模式。

ACE具有分层的体系结构，基本分为三层：

1. 操作系统适配层(OS)

2. C++包装层

3. 框架和模式层

Shock类属（ACE_SOCK）:

1.   Dgram类和Stream类：Dgram类基于UDP数据报协议，提供不可靠的无连接消息传递功能。另一方面，Stream类基于TCP协议，提供面向连接的消息传递.

2.   Acceptor、Connector类和Stream类：Acceptor和Connector类分别用于被动和主动地建立连接。Acceptor类封装BSD accept()调用，而Connector封装BSD connect()调用。Stream类用于在连接建立之后提供双向的数据流，并包含有发送和接收.

 

ACE中流包装中提供面向连接的通信，数据传输类包括ACE_SOCK_Stream类，建立连接的针对于TCP/IP的ACE_SOCK_Connector 和 ACE_SOCK_Acceptor.

 

创建一个服务器端所要创建的变量：

ACE_INET_Addr  server_addr_;

    ACE_SOCK_Acceptor

    ACE_SOCK_Connector

    ACE_SOCK_Stream

而客户端则多了个：

ACE_SOCK_Connector

服务器开启侦听代码：

//ACE_Server.h
#include"ace/SOCK_Acceptor.h"
#include"ace/SOCK_Stream.h"
#include"ace/Log_Msg.h"
#include"ace/Time_Value.h"
 
#define SIZE_DATA		18
#define SIZE_BUF		1024
#define NO_INTERATION	5
 
class ACE_Server
{
public:
       ACE_Server(int port);
       ~ACE_Server();
       int handle_connection();
       int accept_connections();
 
private:
       char *data_buf_;
       ACE_INET_Addr server_addr_;
       ACE_INET_Addr client_addr_;
       ACE_SOCK_Acceptor peer_acceptor_;
       ACE_SOCK_Stream new_stream_;
};

//ACE_Server.cpp
#include"stdafx.h"
#include"ACE_Server.h"
 
ACE_Server::ACE_Server(int port) : server_addr_(port), peer_acceptor_(server_addr_)
{
       data_buf_ = newchar[SIZE_BUF];
}
 
ACE_Server::~ACE_Server()
{
       delete []data_buf_;
       data_buf_ = NULL;
}
 
int ACE_Server::handle_connection()
{
       for (int i=0; i < NO_INTERATION; i++)
       {
              int byte_count = 0;
              if ((byte_count = new_stream_.recv(data_buf_,SIZE_DATA,0)) == -1)
              {
                     ACE_ERROR ((LM_ERROR, "%p\n", "Error in recv"));
              }
              else
              {
                     data_buf_[byte_count] = '\0';
                     ACE_DEBUG((LM_DEBUG,"Server received %s \n",data_buf_));
              }
 
       }
 
       if (new_stream_.close() == -1)
                     ACE_ERROR((LM_ERROR, "%p\n","Close Error"));
 
              return0;
}
 
int ACE_Server::accept_connections()
{
       if (peer_acceptor_.get_local_addr(server_addr_) == -1)
              ACE_ERROR_RETURN((LM_ERROR,"%p \n","Error in get_local_addr"),1);
 
       ACE_DEBUG((LM_DEBUG,"Starting server at port: %d \n",server_addr_.get_port_number()));
 
       while(1)
       {
              ACE_Time_Value timeout(ACE_DEFAULT_TIMEOUT);
              if (peer_acceptor_.accept(new_stream_,&client_addr_,&timeout) == -1)
              {
                     ACE_ERROR((LM_ERROR,"%p \n","Accept"));
                     continue;
              }
              else
              {
                     ACE_DEBUG((LM_DEBUG,"Connection established with remote %s : %d \n",
                            client_addr_.get_host_name(), client_addr_.get_port_number()));
 
                     handle_connection();
              }
       }
}

//main
#include"ACE_Server.h"
int _tmain(int argc, _TCHAR* argv[])
{
       WORD wVersionRequested;
       WSADATA wsaData;
       int err;
        
       wVersionRequested = MAKEWORD( 2, 2 );
        
       err = WSAStartup( wVersionRequested, &wsaData );
       if ( err != 0 ) {
              return0;
       }
        
       if ( LOBYTE( wsaData.wVersion ) != 2 ||
                      HIBYTE( wsaData.wVersion ) != 2 ) {
              WSACleanup( );
              return0;
       }
 
 
       ACE_Server server(1234);
       server.accept_connections();
       getchar();
       return0;
}

客户端

//Client.h:
#define SIZE_BUF		128
#define NO_INTERATION	5
 
class ACE_Client_
{
public:
       ACE_Client_(char* hostname, int port);
       int connect_to_server();
       int send_to_server();
       int close();

private:
       ACE_SOCK_Stream          client_stream_;
       ACE_INET_Addr        remote_addr_;
       ACE_SOCK_Connector connector_;
       char*                           data_buf_;
};
 
//Client.cpp
#include"stdafx.h"
#include"Client.h"
ACE_Client_::ACE_Client_(char* hostname, int port) : remote_addr_(port, hostname)
{
       data_buf_ = "Hello from Client";
}
 
int ACE_Client_::connect_to_server()
{
       ACE_DEBUG((LM_DEBUG, "(%P | %T) Starting connect to %s:%d \n",
              remote_addr_.get_host_name(), remote_addr_.get_port_number()));
 
       if (connector_.connect(client_stream_, remote_addr_) == -1)
       {
              ACE_ERROR_RETURN((LM_ERROR,"(%p | %t) %p\n", "Connection failed"), -1);
       }
       else
       {
              ACE_DEBUG((LM_DEBUG, "(%P | %T) connected to %s\n", remote_addr_.get_host_name()));
       }
 
       return0;
}
 
int ACE_Client_::send_to_server()
{
       for (int i=0; i < NO_INTERATION; i++)
       {
              if (client_stream_.send_n(data_buf_, strlen(data_buf_)+1, 0) == -1 )
                     ACE_ERROR_RETURN((LM_ERROR, "(%p | %t) %p\n", "send to"), 0);
              else
                     ACE_DEBUG((LM_DEBUG, "(%T) Send Message to Server\n"));
       }
 
       close();
}

int ACE_Client_::close()
{
       if (client_stream_.close() == -1)
              ACE_ERROR_RETURN((LM_ERROR, "(%p | %t) %p \n", "close"), -1);
       else
              return0;
}
 
//main
int _tmain(int argc, _TCHAR* argv[])
{
       WORD wVersionRequested;
       WSADATA wsaData;
       int err;
        
       wVersionRequested = MAKEWORD( 2, 2 );
        
       err = WSAStartup( wVersionRequested, &wsaData );
       if ( err != 0 ) {
              return0;
       }
        
       if ( LOBYTE( wsaData.wVersion ) != 2 ||
                      HIBYTE( wsaData.wVersion ) != 2 ) {
              WSACleanup( );
              return0;
       }
 
       ACE_Client_   client("wangj",1234);
       client.connect_to_server();
       client.send_to_server();
       getchar();
       return0;
}