Visual FoxPro

HTTPS Upload with Client SSL Certificate

This example shows how to use a client-side certificate with HTTPS to upload one or more files to a web server. Visual FoxPro

LOCAL lnSuccess
LOCAL loHttp
LOCAL loReq
LOCAL loCert
LOCAL loResp

lnSuccess = 0

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

loHttp = CreateObject('Chilkat.Http')

loReq = CreateObject('Chilkat.HttpRequest')
loReq.HttpVerb = "POST"
loReq.ContentType = "multipart/form-data"
loReq.Path = "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.
loReq.AddHeader("Expect","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.
lnSuccess = loReq.AddFileForUpload2("starfish.jpg","c:/qa_data/starfish.jpg","image/jpg")
IF (lnSuccess = 0) THEN
    ? loReq.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    CANCEL
ENDIF

lnSuccess = loReq.AddFileForUpload("something.pdf","c:/qa_data/something.pdf")
IF (lnSuccess = 0) THEN
    ? loReq.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    CANCEL
ENDIF

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

loCert = CreateObject('Chilkat.Cert')
lnSuccess = loCert.LoadPfxFile("c:/qa_data/pfx/test.pfx","pfx_password")
IF (lnSuccess = 0) THEN
    ? loCert.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    RELEASE loCert
    CANCEL
ENDIF

*  Set the certificate to be used for mutual TLS authentication
*  (i.e. sets the client-side certificate for two-way TLS authentication)
lnSuccess = loHttp.SetSslClientCert(loCert)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    RELEASE loCert
    CANCEL
ENDIF

*  This sends the HTTP request (with 3 files being uploaded) to
*  https://www.example.com/rcvFormDataUpload.aspx
loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpSReq("www.example.com",443,1,loReq,loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    RELEASE loCert
    RELEASE loResp
    CANCEL
ENDIF

? "HTTP response status: " + STR(loResp.StatusCode)
*  See the online reference documentation for 
*  other information that can be obtained from the response object.

RELEASE loHttp
RELEASE loReq
RELEASE loCert
RELEASE loResp