我在寫智能設備之間進行通信的簡單程序,當調用gethostbyaddr()時我收到11001。兩臺設備都顯示它們已連接到同一網絡,但從msdn文檔11001錯誤未找到主機。沒有這樣的主機是已知的。有人有任何建議,謝謝?我的代碼如下。gethostbyaddr()有錯誤11001
void InitializeSocket()
{
WORD socketVersion;
WSADATA wsaData;
SOCKADDR_IN serverInfo;
int returnVal;
LPHOSTENT remotHost;
socketVersion = MAKEWORD(2,2);
WSAStartup(socketVersion, &wsaData);
in_addr iaHost;
//iaHost.s_addr = inet_addr("120.15.22.14");
iaHost.S_un.S_un_b.s_b1 = 120;
iaHost.S_un.S_un_b.s_b2 = 15;
iaHost.S_un.S_un_b.s_b3 = 22;
iaHost.S_un.S_un_b.s_b4 = 14;
remotHost = gethostbyaddr((const char *)&iaHost, sizeof(struct in_addr),
AF_INET);
if(iaHost.s_addr == INADDR_NONE)
{
MessageBox(NULL, TEXT("inet_addr has invalid address"),
TEXT("inet_addr"), MB_OK);
WSACleanup();
closesocket(theSocket);
return;
}
if(!remotHost)
{
returnVal = WSAGetLastError();
WSACleanup();
closesocket(theSocket);
return;
}
theSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(theSocket == INVALID_SOCKET)
{
returnVal = WSAGetLastError();
WSACleanup();
closesocket(theSocket);
return;
}
serverInfo.sin_family = AF_INET;
serverInfo.sin_addr = *((LPIN_ADDR)*remotHost->h_addr_list);
serverInfo.sin_port = htons(8888);
//Connect to the server
returnVal = connect(theSocket, (LPSOCKADDR)&serverInfo,
sizeof(struct sockaddr));
if(returnVal == SOCKET_ERROR)
{
returnVal = WSAGetLastError();
WSACleanup();
closesocket(theSocket);
return;
}
}
感謝您的解釋,因爲我不瞭解網絡編程,所以它非常有幫助。 – Bopha 2009-05-29 20:28:48