(MFC) Asynchronous HTTP Upload

Demonstrates how to do an HTTP upload asynchronously in a background thread.

A server-side C# example showing how to receive an upload is located at C# ASP.NET Code to Receive Upload

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkUpload.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkUpload upload;

    // Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc)
    // that will process the HTTP Upload.
    upload.put_Hostname("www.mywebserver.com");
    upload.put_Path("/receiveUpload.aspx");

    // Add one or more files to be uploaded.
    upload.AddFileReference("file1","dude.gif");
    upload.AddFileReference("file2","pigs.xml");
    upload.AddFileReference("file3","sample.doc");

    // Begin the HTTP upload in a background thread:
    bool success = upload.BeginUpload();
    if (success != true) {
        strOut.append(upload.lastErrorText());
        strOut.append("\r\n");
    }
    else {
        strOut.append("Upload started...");
        strOut.append("\r\n");
    }

    // Wait for the upload to finish.
    // Print the progress as we wait...
    while ((upload.get_UploadInProgress() == true)) {
        // We can abort the upload at any point by calling:
        // upload.AbortUpload();

        // Display the percentage complete and the number of bytes uploaded so far..
        // The total upload size will become set after the upload begins:
        strOut.appendInt(upload.get_PercentUploaded());
        strOut.append("% ");
        strOut.appendInt(upload.get_NumBytesSent());
        strOut.append("/");
        strOut.appendInt(upload.get_TotalUploadSize());
        strOut.append("\r\n");

        // Sleep 2/10ths of a second.
        upload.SleepMs(200);

    }

    // Did the upload succeed?
    if (upload.get_UploadSuccess() == true) {
        strOut.append("Files uploaded!");
        strOut.append("\r\n");
    }
    else {
        strOut.append(upload.lastErrorText());
        strOut.append("\r\n");
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }