非阻塞TCP套接字和发送后立即刷新？ [英] Non-blocking TCP socket and flushing right after send?

问题描述

我为我的应用程序使用Windows套接字（winsock2.h）。由于阻塞套接字不允许我控制连接超时，我使用非阻塞的。发送命令后我使用关闭命令刷新（我不得不）。我的超时是50毫秒，我想知道的是，如果要发送的数据是这么大，有发送只有一部分数据或根本不发送的风险？先感谢...

I am using Windows socket for my application(winsock2.h). Since the blocking socket doesn't let me control connection timeout, I am using non-blocking one. Right after send command I am using shutdown command to flush(I have to). My timeout is 50ms and the thing I want to know is if the data to be sent is so big, is there a risk of sending only a portion of data or sending nothing at all? Thanks in advance...

    hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    u_long iMode=1;
    ioctlsocket(hSocket,FIONBIO,&iMode);
    connect(hSocket, (sockaddr*)(&sockAddr),sockAddrSize);
    send(hSocket, sendbuf, sendlen, 0);
    shutdown(hSocket, SD_BOTH);
    Sleep(50);
    closesocket(hSocket);

推荐答案

感谢EJP和Martin，第二个线程检查。另外在代码我张贴在我的问题，我添加了counter = 0;线后发送线和删除关机。它的工作就像我想要的。它从不等待超过50ms :)真的很感谢

Thanks to EJP and Martin, now I have created a second thread to check. Also in the code I posted in my question, I added "counter=0;" line after the "send" line and removed shutdown. It works just as I wanted now. It never waits more than 50ms :) Really big thanks

unsigned __stdcall SecondThreadFunc( void* pArguments )

{

while(1)
{
    counter++;
    if (counter > 49)
    {
        closesocket(hSocket);
        counter = 0;
        printf("\rtimeout");
    }

    Sleep(1);
}
return 0;

}

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