(Unicode C) SFTP Fsync -- Flush an Open File on the Server

Demonstrates how to flush the contents of an open file on the server. This example only works for servers that implement the fsync@openssh.com extension.

Note: This example requires Chilkat v9.5.0.71 or later.

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#include <C_CkSFtpW.h>

void ChilkatSample(void)
    {
    HCkSFtpW sftp;
    BOOL success;
    const wchar_t *handle;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    sftp = CkSFtpW_Create();

    // Pass a domain or IP address..
    success = CkSFtpW_Connect(sftp,L"my-sftp-server.com",22);
    if (success == TRUE) {
        success = CkSFtpW_AuthenticatePw(sftp,L"mySFtpLogin",L"mySFtpPassword");
    }

    if (success == TRUE) {
        success = CkSFtpW_InitializeSftp(sftp);
    }

    if (success != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    // Open a file on the server for writing.
    handle = CkSFtpW_openFile(sftp,L"myTest.txt",L"writeOnly",L"createTruncate");
    if (CkSFtpW_getLastMethodSuccess(sftp) != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    // Write some text to the file:
    success = CkSFtpW_WriteFileText(sftp,handle,L"ansi",L"abcdefghijklmnopqrstuvwxyz");
    if (success != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    // Make sure the server flushes what we wrote to the disk..
    // (this is requires a server that implements the fsync@openssh.com SFTP protocol extension)
    success = CkSFtpW_Fsync(sftp,handle);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    // ....
    // ....

    success = CkSFtpW_WriteFileText(sftp,handle,L"ansi",L"ABCDEFGHIJKLMNOPQRSTUVWXYZ");
    if (success != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    // Close the file.
    success = CkSFtpW_CloseHandle(sftp,handle);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSFtpW_lastErrorText(sftp));
        CkSFtpW_Dispose(sftp);
        return;
    }

    wprintf(L"Success.\n");


    CkSFtpW_Dispose(sftp);

    }