关于socket编程问题求大神解决

Question

我写了一个简单的socket程序手机那边发个数据PC这边接收。写在DEV里时可以正常的接收到数据可是写在vs2010的一个按钮里就接收不到数据了，怎么回事啊，急求啊
SOCKET socket1;
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2,1),&wsaData)) //调用Windows Sockets DLL
{
AfxMessageBox(_T("Winsock无法初始化!"));
WSACleanup();
return;
}
struct sockaddr_in local;
struct sockaddr_in from;
int fromlen =sizeof(from);
local.sin_family=AF_INET;
local.sin_port=htons(27012); ///监听端口
local.sin_addr.s_addr=INADDR_ANY; ///本机
socket1=socket(AF_INET,SOCK_DGRAM,0);
bind(socket1,(struct sockaddr*)&local,sizeof(local));
char buffer[1024]="\0";
if (recvfrom(socket1,buffer,sizeof(buffer),0,(struct sockaddr*)&from,&fromlen)!=SOCKET_ERROR)
{
AfxMessageBox(_T("接收到来自远程客户端额数据!"));

        }
   closesocket(socket1);

Answer 1

怎么没有listen端口。