高手帮我看看，啥原因，socket通讯的！

[fishboyzyf]

m_sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
if(m_sServer == SOCKET_ERROR)
{
err = WSAGetLastError();
return FALSE;
}

//添参数
local.sin_addr.s_addr = htonl(INADDR_ANY);
local.sin_family = AF_INET;
local.sin_port = htons(port);

if(bind(m_sServer, (struct sockaddr *)&local, sizeof(local)) == SOCKET_ERROR)
{
err = WSAGetLastError();
closesocket(m_sServer);
return FALSE;
}
//开始侦听
if(listen(m_sServer, backlog) != 0)
{
err = WSAGetLastError();
closesocket(m_sServer);
return FALSE;
}
现在SOCK_STREAM（TCP）可以实现通讯，但是通讯方式改了SOCK_DGRAM（UDP）后，数据棒定就错误！

[gohappy_1999]

错误代码呢？

[zylthinking]

socket(AF_INET, SOCK_STREAM, IPPROTO_IP);

IPPROTO_IP???我记得要么是0 要么是IPPROTO_TCP / IPPROTO_UDP

[striking]

http://community.csdn.net/Expert/topic/4681/4681161.xml?temp=.5610773

[wanglei051]

sock=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
我怎么可以啊？楼主跟踪一下看看

[tianyanzjq]

我查了一下MSDN,第三个参数确实通常为0.而且大部分例子中都用NULL来表示的!