Socket 物件 Part 2

2011-08-07

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netwroking

Socket 物件 Part 2

我們將在這邊說明這個Socket使用的範例

Socket的初始化

int main(int argc, char **argv)
{
    Net::Initial();

    Net::Socket _socket;
    _socket.Create(AF_INET, SOCK_STREAM, IPPROTO_TCP );
    _socket.Connect(AF_INET,"127.0.0.1", 18000);
    // other work and so on....

    Net::Terminate();
    return 0;
}

Socket操作實發生異常的處理方式

try
{
    std::string _szSend("Send test");
    _socket.Send(_szSend.c_str(), _szSend.size(), 0);
}
catch(Net::SocketException sockExp)
{
    std::cout << sockExp.no() << std::endl;
    std::cout << sockExp.what() << std::endl;
}
catch(std::exception exp)
{
    std::cout << exp.what() << std::endl;
}
catch(const char* errorMsg)
{
    std::cout << errorMsg << std::endl;
}

從網路卡的buffer讀取資料的做法

bool RecvFromBuff(Net::Socket& socket, std::string& szData)
{
    if( !socket.Select(0))
        return false;

    int _dataSizeInBuff = socket.ReceivedBuffSize();
    if(_dataSizeInBuff==0)
        return false;

    Net::DataBlock _dataBlock(_dataSizeInBuff);
    socket.Recv(_dataBlock, _dataSizeInBuff, 0);
    szData.append(_dataBlock, _dataSizeInBuff);
    return true;
}

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