ACE自适配通信环境（ADAPTIVE Communication Environment）是可以自由使用、开放源码的面向对象（OO）框架（Framework）

				// C-inclient.cpp,v 4.10 2005/01/21 02:19:20 ossama Exp								#include "ace/OS_main.h"				#include "ace/OS_NS_string.h"				#include "ace/OS_NS_sys_socket.h"				#include "ace/OS_NS_unistd.h"				#include "ace/OS_NS_stdlib.h"				#include "ace/OS_NS_stdio.h"				#include "ace/OS_NS_netdb.h"				#include "ace/Default_Constants.h"								ACE_RCSID(SOCK_SAP, C_inclient, "C-inclient.cpp,v 4.10 2005/01/21 02:19:20 ossama Exp")								/* BSD socket client */								int				ACE_TMAIN (int argc, ACE_TCHAR *argv[])				{				  // Initialize WinSock DLL on Win32...				  ACE_OS::socket_init (ACE_WSOCK_VERSION);								  struct sockaddr_in saddr;				  struct hostent *hp;				  const ACE_TCHAR *host = argc > 1 ? argv[1] : ACE_DEFAULT_SERVER_HOST;				  u_short port_num =				    htons (argc > 2 ? ACE_OS::atoi (argv[2]) : ACE_DEFAULT_SERVER_PORT);				  int sockbufsize = argc > 3 ? ACE_OS::atoi (argv[3]) : 0;				  char buf[BUFSIZ];				  ACE_HANDLE s_handle;				  int w_bytes;				  int r_bytes;				  int n;								  // Create a local endpoint of communication.				  if ((s_handle = ACE_OS::socket (PF_INET, SOCK_STREAM, 0)) == ACE_INVALID_HANDLE)				    ACE_OS::perror (ACE_TEXT("socket")), ACE_OS::exit (1);								  // If a sockbufsize was specified, set it for both send and receive.				  if (sockbufsize > 0)				    {				      if (ACE_OS::setsockopt (s_handle, SOL_SOCKET, SO_SNDBUF,				                              (const char *) &sockbufsize,				                              sizeof (sockbufsize)) != 0)				        ACE_OS::perror (ACE_TEXT("SO_SNDBUF")), ACE_OS::exit (1);				      if (ACE_OS::setsockopt (s_handle, SOL_SOCKET, SO_RCVBUF,				                              (const char *) &sockbufsize,				                              sizeof (sockbufsize)) != 0)				        ACE_OS::perror (ACE_TEXT("SO_RCVBUF")), ACE_OS::exit (1);				    }								  // Determine IP address of the server.				  if ((hp = ACE_OS::gethostbyname (ACE_TEXT_ALWAYS_CHAR(host))) == 0)				    ACE_OS::perror (ACE_TEXT("gethostbyname")), ACE_OS::exit (1);								  // Set up the address information to contact the server.				  ACE_OS::memset ((void *) &saddr, 0, sizeof saddr);				  saddr.sin_family = AF_INET;				  saddr.sin_port = port_num;				  ACE_OS::memcpy (&saddr.sin_addr, hp->h_addr, hp->h_length);								  // Establish connection with remote server.				  if (ACE_OS::connect (s_handle,						       reinterpret_cast (&saddr),				                       sizeof saddr) == -1)				    ACE_OS::perror (ACE_TEXT("connect")), ACE_OS::exit (1);								  // Send data to server (correctly handles "incomplete writes" due to				  // flow control).								  while ((r_bytes = ACE_OS::read (ACE_STDIN, buf, sizeof buf)) > 0)				    for (w_bytes = 0; w_bytes < r_bytes; w_bytes += n)				      if ((n = ACE_OS::send (s_handle, buf + w_bytes,				                      r_bytes - w_bytes)) < 0)				        ACE_OS::perror (ACE_TEXT("write")), ACE_OS::exit (1);								  if (ACE_OS::recv (s_handle, buf, 1) == 1)				    ACE_OS::write (ACE_STDOUT, buf, 1);								  // Explicitly close the connection.				  if (ACE_OS::closesocket (s_handle) == -1)				    ACE_OS::perror (ACE_TEXT("close")), ACE_OS::exit (1);								  return 0;				}