Redirecting console output to sockets

This is a discussion on Redirecting console output to sockets within the Windows Programming forums, part of the Platform Specific Boards category; I am developing a program which requires that console output (from a dos prompt) be redirected to a windows socket. ...

  1. #1
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    Jul 2002
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    Question Redirecting console output to sockets

    I am developing a program which requires that console output (from a dos prompt) be redirected to a windows socket. The code I figured should work is:

    PROCESS_INFORMATION hProcessInfo;
    STARTUPINFO hStartupInfo;

    memset(&hStartupInfo, 0, sizeof(hStartupInfo));
    hStartupInfo.cb = sizeof(hStartupInfo);
    hStartupInfo.wShowWindow = SW_HIDE;
    hStartupInfo.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;

    hStartupInfo.hStdError = (HANDLE)sock;
    hStartupInfo.hStdInput = (HANDLE)sock;
    hStartupInfo.hStdOutput = (HANDLE)sock;

    if (!CreateProcess(NULL, "cmd.exe", NULL, NULL, true, CREATE_NO_WINDOW|CREATE_SEPARATE_WOW_VDM|REALTIME_ PRIORITY_CLASS|DETACHED_PROCESS, NULL, NULL, &hStartupInfo, &hProcessInfo)) {
    MessageBox(NULL, strerror(GetLastError()), "eRROR", 0);
    }


    But even though CreateProcess created the process, outptu is not redirected to "sock" (the socket handle). Anyone has any ideas?

  2. #2
    &TH of undefined behavior Fordy's Avatar
    Join Date
    Aug 2001
    Posts
    5,786
    There's more to it I'm afraid......you need to make the handles you pass inheritable...then duplicate them with noninheritable handles.....then read the output from the console in a loop (usually better with a thread)...

    Here's a good example http://www.codeproject.com/dialog/quickwin.asp

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