Upload Files with Params

Demonstrates how to upload files with extra form parameters from an application to a web server. Note: There must be something provided on the server-side to consume the upload. It could be an ASP or ASP.NET script, Perl, C++ CGI, PHP, Ruby, etc,. However, uploading via HTTP is not the same as uploading via FTP where the FTP server handles receiving the file and saving to disk.

The C# code behind http://www.chilkatsoft.com/receiveUpload.aspx may be found at this URL: C# to Receive Upload in ASP.NET.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkHttpRequest req;
    const char * domain;
    long port;
    BOOL ssl;
    HCkHttpResponse resp;


    http = CkHttp_Create();

    //  Any string unlocks the component for the 1st 30-days.
    success = CkHttp_UnlockComponent(http,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        return;
    }

    //  Build a HTTP request with the files to be uploaded:
    req = CkHttpRequest_Create();
    CkHttpRequest_UseUpload(req);

    //  The URL we'll be posting to is:
    //  http://www.chilkatsoft.com/receiveUpload.aspx
    //  Therefore, the path part of the URL is:
    CkHttpRequest_putPath(req,"/receiveUpload.aspx");

    //  Note: You may test uploads to this URL, but anything over 80K will be aborted on the receiving side.

    //  Add some files to the request:
    //  The 1st argument is an arbitrary name.  It's the POST form field name.
    //  The 2nd argument is the filename currently existing on
    //  the local filesystem.  It may include an absolute or relative
    //  path, or no path at all if it's in the current working directory.
    success = CkHttpRequest_AddFileForUpload(req,"file1","hamlet.xml");
    if (success != TRUE) {
        printf("%s\n",CkHttpRequest_lastErrorText(req));
        return;
    }

    success = CkHttpRequest_AddFileForUpload(req,"file2","dude.gif");
    if (success != TRUE) {
        printf("%s\n",CkHttpRequest_lastErrorText(req));
        return;
    }

    //  Additional non-file params may be added to the POST request
    //  by calling AddParam:
    CkHttpRequest_AddParam(req,"extraParam1","abc123");
    CkHttpRequest_AddParam(req,"extraParam2","This is the content for my POST param");

    //  Send the HTTP POST and get the response.  Note: This is a blocking call.
    //  The method does not return until the full HTTP response is received.

    domain = "www.chilkatsoft.com";
    port = 80;
    ssl = FALSE;

    resp = CkHttp_SynchronousRequest(http,domain,port,ssl,req);
    if (resp == 0 ) {
        printf("%s\n",CkHttp_lastErrorText(http));
    }
    else {
        //  Display the HTML source of the page returned.
        printf("%s\n",CkHttpResponse_bodyStr(resp));
    }


    CkHttp_Dispose(http);
    CkHttpRequest_Dispose(req);

    }