wsagetlasterror 10060

场景：实现tracert命令有关问题，WSAGetLastError()返回10060如何解决啊

实现tracert命令问题，WSAGetLastError()返回10060怎么解决啊?
功能是实现tracert命令，但是 nRet=::recvfrom(。。。）返回的是-1，WSAGetLastError()==WSAETIMEDOUT，，是超时，实在是不知道怎么解决啊。。。。。。。代码如下:

#include "iostream.h"
#include "winsock2.h"
#include "ws2tcpip.h"
#include "sys/types.h" 



#pragma comment(lib,"ws2_32")
//#define ICMP_PACK_SIZE (sizeof(ICMP_HEADER)+32)


//ICMP报头
typedef struct _ICMP_HEADER{
  unsigned char icmp_type;  
  unsigned char icmp_code;  
  unsigned short icmp_checksum;  

  unsigned short icmp_id;  
  unsigned short icmp_sequence;  
  unsigned long icmp_timestamp;  
}ICMP_HEADER,*PICMP_HEADER;


//IP报头
typedef struct _IP_HEADER{

 unsigned char ip_version; //版本
 unsigned char ip_tos; //区分服务
 unsigned short ip_totallen;  
 unsigned short ip_id;  
 unsigned short ip_flags; //标志，最低位为MF,MF=1即表示后面“还有分片”
 unsigned char ip_ttl; //生存时间
 unsigned char ip_proto;  
 unsigned short ip_checksum; //只检验数据报首部
 unsigned long ip_source;  
 unsigned long ip_destination;  
}IP_HEADER,*PIP_HEADER;


int Tracert(char *lpDestIp)
{
  //初始化WinSock库
  WORD wVersionRequested=MAKEWORD(2,2); //指定载入动态库的版本
  WSADATA wsaData;
  if(WSAStartup(wVersionRequested,&wsaData)!=0) return false;


  char recvBuf[1024]={0};

  SOCKET sRaw=::socket(AF_INET,SOCK_RAW,IPPROTO_ICMP);
  SOCKADDR_IN in; // SOCKADDR_IN指明地址信息的数据结构
  in.sin_family=AF_INET;
  in.sin_port=0;
  in.sin_addr.S_un.S_addr=INADDR_ANY; //任意地址
  if(::bind(sRaw,(sockaddr*)&in,sizeof(in))==SOCKET_ERROR)
  {
  cout<<"bind failed!"<<endl;
  return false; //-----------------------
  }
  
  //SetTimeout(sRaw,5*1000);//----------------------------------------------
  int time=5000;
 
  int ret=::setsockopt(sRaw,SOL_SOCKET,SO_RCVTIMEO ,(char*)&time,sizeof(time)); //接收时限
  
  if(ret==SOCKET_ERROR)
  {
  cout<<"sRaw set SO_RCVTIMEO error!"<<endl;
  }



  SOCKET sSend=::socket(AF_INET,SOCK_DGRAM,0);
  SOCKADDR_IN destAddr;
  destAddr.sin_family=AF_INET;
  destAddr.sin_port=::htons(22);
  destAddr.sin_addr.S_un.S_addr=::inet_addr(lpDestIp);
  
  int nTTL=1;
  int nRet;
  ICMP_HEADER*pICMPHdr;
  int nTick;

  SOCKADDR_IN recvAddr; //反馈消息的来源地址
  do{
  //SetTTL(sSend,nTTL);//---------------------------------------------------
   
  ret=::setsockopt(sSend, IPPROTO_IP,IP_TTL, (char*)&nTTL, sizeof(nTTL));
  if(ret==SOCKET_ERROR)
  {
  cout<<"TTL set error!";
  break;
  }
   
  nTick=::GetTickCount();
  nRet=::sendto(sSend,"hello",5,0,(sockaddr*)&destAddr,sizeof(destAddr));

  if(nRet==SOCKET_ERROR) 
  {
  cout<<"sendto failed!"<<endl;
  break;
  }
   
 

  int nLen=sizeof(recvAddr);
  nRet=::recvfrom(sRaw,recvBuf,1024,0,(sockaddr*)&recvAddr,&nLen);
   
 
  cout<<"nRet="<<nRet<<endl;
  if(nRet==SOCKET_ERROR)
  {
  if(::WSAGetLastError()==WSAETIMEDOUT)
  { 
  cout<<"WSAGetLastError()"<<WSAGetLastError()<<endl; //-----这里报错-----------
  cout<<"sRaw recvfrom time out!"<<endl;
  break;
  //continue;
  }
  else {
  cout<<"recvfrom failed!"<<endl;
  break;
  }
  }
  pICMPHdr=(ICMP_HEADER*)&recvBuf[sizeof(IP_HEADER)];

  if(pICMPHdr->icmp_type!=11&&pICMPHdr->icmp_type!=0&&pICMPHdr->icmp_code!=0) 
  {
  cout<<"Unexpected Type:"<<pICMPHdr->icmp_type<<endl;
  cout<<"Unexpected Code:"<<pICMPHdr->icmp_code<<endl;
  }
   
   
  char *szIP=::inet_ntoa(recvAddr.sin_addr);
  cout<<"第 "<<nTTL<<" 个路由器，IP地址为："<<szIP<<endl;
  cout<<"用时"<<GetTickCount()-nTick<<" ms"<<endl;

  if(pICMPHdr->icmp_type==0&&pICMPHdr->icmp_code==0)
  {
  char *sz=&((char*)pICMPHdr)[sizeof(ICMP_HEADER)];
  sz[nRet]='\0';
  cout<<"目标可达："<<sz<<endl;
  break;
  }
  cout<<"----------------------------------------"<<endl;

 }while(nTTL++<50);

::closesocket(sRaw);
::closesocket(sSend);
return true;
}



int main()
{
 char lpDestIp[]="61.135.169.125"; 
 Tracert(lpDestIp);
 return 0;
}


------解决方案--------------------
vc实现tracert程序 
http://wenku.baidu.com/view/eecb9060ddccda38376bafec.html