一个 helloword 程序

最新推荐文章于 2024-05-21 19:26:03 发布

最新推荐文章于 2024-05-21 19:26:03 发布 · 139 阅读

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本文介绍了一个使用ACE库实现的异步IO服务示例。该服务通过ACE_Proactor处理异步接受连接请求，并利用ACE_Asynch_Acceptor进行异步读写操作。当读操作完成时，服务会响应一个简单的HTTP请求并返回一个包含‘Hello World’的网页。

#include "ace/Message_Queue.h"
#include "ace/Asynch_IO.h"
#include "ace/OS.h"
#include "ace/Proactor.h"
#include "ace/Asynch_Acceptor.h"
#include "ace/Addr.cpp"
#include "ace/Time_Value.cpp"
#include "ace/String_Base_Const.cpp"
#include "ace/OS_String.cpp"
#include "ace/Synch_Options.cpp"
//#include <mstcpip.h>

class HA_Proactive_Service : public ACE_Service_Handler
{
public:
~HA_Proactive_Service ()
{
if (this->handle () != ACE_INVALID_HANDLE)
ACE_OS::closesocket (this->handle ());
}

virtual void open (ACE_HANDLE h, ACE_Message_Block&)
{
this->handle (h);
if (this->reader_.open (*this) != 0 )
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("HA_Proactive_Service reader open")));
delete this;
return;
}
if (this->writer_.open (*this) != 0 )
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("HA_Proactive_Service write open")));
delete this;
return;
}
ACE_Message_Block *mb = new ACE_Message_Block(buffer,1024);
if (this->reader_.read (*mb, mb->space ()) != 0)
{
ACE_OS::printf("Begin read fail\n");
delete this;
return;
}

return;
}

//异步读完成后会调用此函数
virtual void handle_read_stream(const ACE_Asynch_Read_Stream::Result &result)
{
ACE_Message_Block &mb = result.message_block ();
if (!result.success () || result.bytes_transferred () == 0)
{
mb.release ();
delete this;
return;
}

mb.copy(""); //为字符串添加结束标记'\0'
ACE_OS::printf("rev:\t%s\n",mb.rd_ptr());

/* if(this->writer_.write(mb,mb.length()) !=0)
{
ACE_OS::printf("Begin read fail\n");
delete this;
return;
}*/

mb.release();

//实现一个WEB helloword程序~
ACE_Message_Block *bb = new ACE_Message_Block(1000);
bb->copy("HTTP/1.1 200 OK\r\n \
Date: Tue, 03 Mar 2009 09:27:26 GMT\r\n \
Server: BWS/1.0\r\n \
Content-Length: 50\r\n \
Content-Type: text/html\r\n \
Cache-Control: privateExpires: Tue, 03 Mar 2009 09:27:26 GMT\r\n \
Content-Encoding: text\r\n\r\n-hello world-<br> saving people ，saving the word");
if(this->writer_.write(*bb,bb->length()) !=0)
{
ACE_OS::printf("Begin read fail\n");
delete this;
return;
}

ACE_Message_Block *nmb = new ACE_Message_Block(buffer,1024);
if (this->reader_.read (*nmb, nmb->space ()) != 0)

return;
}

virtual void handle_write_stream(const ACE_Asynch_Write_Stream::Result &result)
{
ACE_Message_Block &mb = result.message_block ();
ACE_OS::printf("mb.release{ %s\n",mb.base());
mb.release();
return;
}

private:
ACE_Asynch_Read_Stream reader_;
ACE_Asynch_Write_Stream writer_;
char buffer[1024];
};

int main(int argc, char *argv[])
{
int port=3000;
ACE_Asynch_Acceptor<HA_Proactive_Service> acceptor;

if (acceptor.open (ACE_INET_Addr (port)) == -1)
return -1;

while(true)
ACE_Proactor::instance ()->handle_events ();

return 0;
}