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：
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;
}