winCE 下 evc 的 Socket 通信

winCE下evc的Socket通信的例子

socket在evc下的和vc下的差不多，找一个vc下的例子改改就可以了！

不过，在需要注意的是：在WinCE下的socket在做Server时，在接收方面有点问题，时WinCE本身的bug。修改的办法是将WinSock.h中将变量m_bConnectCalled由private改成public，然后在onaccept（）之后，将m_bConnectCalled设成true。更具体的办法请去msdn的新闻组寻找。

int EpgCore::initialize()

{

       int iPort = DEFAULT_PORT;

       WSADATA wsd;

struct sockaddr_in server;

unsigned long ul =1;

struct hostent *host = NULL; 

tm.tv_sec = 5;

tm.tv_usec = 0;

if(WSAStartup(MAKEWORD(2,2),&wsd) != 0)

{

MessageBox(NULL,_T("initializing socke failed"),MB_OK,NULL);

return -1;

}

sClient = socket(AF_INET,SOCK_STREAM,IPPROTO_IP);

if(sClient == SOCKET_ERROR)

{

MessageBox(NULL,_T("socket() failed"),MB_OK,NULL);

return -1;

}

server.sin_family = AF_INET; 

server.sin_port = htons(iPort);

server.sin_addr.s_addr = inet_addr("192.168.136.102");//ip address

      

if(server.sin_addr.s_addr == INADDR_NONE)

{

host = gethostbyname("192.168.136.102"); 

if(host == NULL)

                     return -1;

CopyMemory(&server.sin_addr,host->h_addr_list[0],host->h_length);

}

if(connect(sClient,(struct sockaddr*)&server,sizeof(server)) == SOCKET_ERROR)

{

MessageBox(NULL,_T("connect() failed"),MB_OK,NULL);

   return -1;

}

   //set noblock model

   if (ioctlsocket(sClient, FIONBIO, &ul) == SOCKET_ERROR)

   {

   MessageBox(NULL,_T("ioctlsocket() failed"),MB_OK,NULL);

             return -1;

   }

return 0;

}

void EpgCore::tick()

{

//    SetingSelect();

   RecvMessage();

   FileOperate(RecvMessage());

//    RecvMessage();

      

}

int EpgCore::SetingSelect()

{

       FD_ZERO(&fdread);    

FD_SET(sClient,&fdread);

select(0,&fdread,NULL,NULL,NULL);

return 0;

}

char *EpgCore::RecvMessage()

{

FD_ZERO(&fdread);    

FD_SET(sClient,&fdread);

select(0,&fdread,NULL,NULL,NULL);

if(FD_ISSET(sClient,&fdread))

   {       

                  

                               RecvRet = recv(sClient,(char *)szBuff,DEFAULT_BUFFER,0);

                   if(RecvRet == 0)

   return '\0';

                   else if (RecvRet == SOCKET_ERROR) 

return '\0'; 

                   szBuff[RecvRet] = '\0';

//转化为unicode

WCHAR wchar[4098];

MessageBox(NULL,CharToWChar(wchar,szBuff),MB_OK,NULL);

  

}

return szBuff;

}

int EpgCore::SendMessage()

{

ret = send(sClient,"GETLIST",sizeof("GETLIST"),0);

if(ret == 0)

return -1;

if(ret == SOCKET_ERROR)

return -1;

return 0;

}

CImgSock::CImgSock()

{

WSADATA wsaData;

WSAStartup(MAKEWORD(1,1),&wsaData);

m_bConnect = false;

}

CImgSock::~CImgSock()

{

if(IsConnect())

DisConnect();

WSACleanup();

}

bool CImgSock::Connect(char *pstrIp,int nPort)

{

SOCKADDR_IN addr;

strcpy(m_szRemoteIp,pstrIp);

m_nRemotePort = nPort;

m_Sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if(m_Sock == INVALID_SOCKET)

return false;

BOOL sopt = TRUE;

setsockopt(m_Sock, IPPROTO_TCP, TCP_NODELAY, (char *)&sopt, sizeof(BOOL));

setsockopt(m_Sock, SOL_SOCKET, SO_DONTLINGER, (char *)&sopt, sizeof(BOOL));

addr.sin_family = AF_INET;

addr.sin_addr.s_addr = inet_addr(m_szRemoteIp);

addr.sin_port = htons(m_nRemotePort);

if(connect(m_Sock,(PSOCKADDR)&addr,sizeof(addr)) != 0)

{

closesocket(m_Sock);

return false;

}

m_bConnect = true;

return true;

}

void CImgSock::DisConnect()

{

if(m_Sock != INVALID_SOCKET)

{

closesocket(m_Sock);

}

m_bConnect = false;

}

bool CImgSock::IsConnect()

{

return m_bConnect;

}

int CImgSock::Recv(char *buf,int len)

{

int index;

TIMEVAL tv;

fd_set fdread;

index = 0;

if(m_bConnect)

{ 

tv.tv_sec = 1;

tv.tv_usec =0; 

FD_ZERO(&fdread);

FD_SET(m_Sock,&fdread);

if(select(0,&fdread,NULL,NULL,&tv))

{

index = recv(m_Sock,buf,len,0);

if(index == SOCKET_ERROR)

index = 0;

}

}

return index;

}

int CImgSock::Send(char *buf,int len)

{

int index;

TIMEVAL tv;

fd_set fdwrite;

index = 0;

if(m_bConnect)

{

tv.tv_sec = 1;

tv.tv_usec = 0;

FD_ZERO(&fdwrite);

FD_SET(m_Sock,&fdwrite);

if(select(0,NULL,&fdwrite,NULL,&tv))

{

index = send(m_Sock,buf,len,0);

if(index == SOCKET_ERROR)

index = 0;

}

}

return index;

}

原文地址：

http://www.hmitech.com/bbs/viewthread.php?tid=119