用ACE从Web服务器抓数据

前面已经说了VS2008写ACE代码的配置方法，下面这段代码是用ACE从百度的Web服务器取网页数据的代码

 

#include "ace/INET_Addr.h"
#include "ace/SOCK_Connector.h"
#include "ace/SOCK_Stream.h"
#include "ace/Time_Value.h"

 

 

int main (int argc, char *argv[])
{
 const char *pathname = "index.html";
 const char *server_hostname = "www.baidu.com";

 char *header[4];
 header[0] = "GET http://www.baidu.com HTTP/1.1/r/n";
 header[1] = "Host: www.baidu.com/r/n";
 header[2] = "Connection: Close/r/n";
 header[3] = "/r/n";

 

 ACE_SOCK_Connector connector;
 ACE_SOCK_Stream peer;
 ACE_INET_Addr peer_addr;

 

 if (peer_addr.set(80, server_hostname) == -1)
 {
  return 1;
 }

 if (connector.connect(peer, peer_addr) == -1)
 {
  return 1;
 }

 

 char buf[BUFSIZ];
 iovec iov[4];
 for (int i = 0; i < 4; i++)
 {
  iov[i].iov_base = header[i];
  iov[i].iov_len = strlen(header[i]);
 }

 

 // Wait no more than 5 seconds to send or receive data.
 ACE_Time_Value timeout(5);

 peer.sendv_n(iov, 4, &timeout);

 

 ssize_t lenRecv = peer.recv(buf, sizeof buf, &timeout);
 while (lenRecv > 0)
 {
  ACE::write_n(ACE_STDOUT, buf, lenRecv);
  lenRecv = peer.recv(buf, sizeof buf, &timeout);
 }

 

 int result_close = peer.close();

 

 system("pause");
 return result_close ? 1 : 0;
}