Unicode C

HTTP multipart/form-data Upload

See more HTTP Examples

Demonstrates how to upload files to an HTTP server using a multipart/form-data POST. Unicode C

#include <C_CkHttpW.h>
#include <C_CkHttpRequestW.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    HCkHttpRequestW req;
    HCkHttpResponseW resp;

    success = FALSE;

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

    http = CkHttpW_Create();

    req = CkHttpRequestW_Create();
    CkHttpRequestW_putHttpVerb(req,L"POST");
    CkHttpRequestW_putContentType(req,L"multipart/form-data");
    CkHttpRequestW_putPath(req,L"rcvFormDataUpload.aspx");

    // Send an "Expect: 100-continue" header in the request.
    // This causes the HTTP server to end a 100-continue response
    // immediately after receiving the HTTP header.  The client
    // (Chilkat) will receive this intermediate response, and if
    // it's not an error response, it knows that the HTTP server will
    // accept the data that is forthcoming.
    // The alternative is to get an error response after trying to upload
    // the entire contents of the files.
    CkHttpRequestW_AddHeader(req,L"Expect",L"100-continue");

    // Call AddFileForUpload2 for each file to be uploaded in the HTTP multipart/form-data POST
    // To allow Chilkat to determine the content-type automatically based on file-extension,
    // call AddFileForUpload instead.

    // The 1st arg is the filename passed in the HTTP request.
    // The 2nd arg is the path in the local filesytem.
    // The file is not loaded into memory.  It is streamed directly from the file
    // when the HTTP POST is sent.
    success = CkHttpRequestW_AddFileForUpload2(req,L"starfish.jpg",L"c:/qa_data/starfish.jpg",L"image/jpg");
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpRequestW_lastErrorText(req));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        return;
    }

    success = CkHttpRequestW_AddFileForUpload(req,L"something.pdf",L"c:/qa_data/something.pdf");
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpRequestW_lastErrorText(req));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        return;
    }

    // Its also possible to add a file from a string:
    success = CkHttpRequestW_AddStringForUpload(req,L"test.xml",L"test.xml",L"<abc>This is the test.xml content</abc>",L"utf-8");
    // We'll assume success since no files are involved..

    // This sends the HTTP request (with 3 files being uploaded) to
    // http://www.mywebserver123abc.com/rcvFormDataUpload.aspx
    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpSReq(http,L"www.mywebserver123abc.com",80,FALSE,req,resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    wprintf(L"HTTP response status: %d\n",CkHttpResponseW_getStatusCode(resp));
    // See the online reference documentation for 
    // other information that can be obtained from the response object.

    // To send using SSL/TLS, do this instead.
    // This sends to https://www.mywebserver123abc.com/rcvFormDataUpload.aspx
    success = CkHttpW_HttpSReq(http,L"www.mywebserver123abc.com",443,TRUE,req,resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    wprintf(L"HTTP response status: %d\n",CkHttpResponseW_getStatusCode(resp));
    // See the online reference documentation for 
    // other information that can be obtained from the response object.


    CkHttpW_Dispose(http);
    CkHttpRequestW_Dispose(req);
    CkHttpResponseW_Dispose(resp);

    }