Xbase++

HTTP multipart/form-data Upload

See more HTTP Examples

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

LOCAL nSuccess
LOCAL oHttp
LOCAL oReq
LOCAL oResp

nSuccess := 0

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

oHttp := CreateObject("Chilkat.Http")

oReq := CreateObject("Chilkat.HttpRequest")
oReq:HttpVerb := "POST"
oReq:ContentType := "multipart/form-data"
oReq: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.
oReq: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.
nSuccess := oReq:AddFileForUpload2("starfish.jpg", "c:/qa_data/starfish.jpg", "image/jpg")
IF (nSuccess == 0)
    ? oReq:LastErrorText
    oHttp:destroy()
    oReq:destroy()
    RETURN
ENDIF

nSuccess := oReq:AddFileForUpload("something.pdf", "c:/qa_data/something.pdf")
IF (nSuccess == 0)
    ? oReq:LastErrorText
    oHttp:destroy()
    oReq:destroy()
    RETURN
ENDIF

//  Its also possible to add a file from a string:
nSuccess := oReq:AddStringForUpload("test.xml", "test.xml", "<abc>This is the test.xml content</abc>", "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
oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpSReq("www.mywebserver123abc.com", 80, 0, oReq, oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oReq:destroy()
    oResp:destroy()
    RETURN
ENDIF

? "HTTP response status: " + Str(oResp:StatusCode)
//  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
nSuccess := oHttp:HttpSReq("www.mywebserver123abc.com", 443, 1, oReq, oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oReq:destroy()
    oResp:destroy()
    RETURN
ENDIF

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

oHttp:destroy()
oReq:destroy()
oResp:destroy()