(Xojo Plugin) HTTP multipart/form-data Upload

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

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim http As New Chilkat.Http

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.ContentType = "multipart/form-data"
req.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.
req.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.
Dim success As Boolean
success = req.AddFileForUpload2("starfish.jpg","c:/qa_data/starfish.jpg","image/jpg")
If (success <> True) Then
    System.DebugLog(req.LastErrorText)
    Return
End If

success = req.AddFileForUpload("something.pdf","c:/qa_data/something.pdf")
If (success <> True) Then
    System.DebugLog(req.LastErrorText)
    Return
End If

// Its also possible to add a file from a string:
success = req.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
Dim resp As Chilkat.HttpResponse
resp = http.SynchronousRequest("www.mywebserver123abc.com",80,False,req)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
Else
    System.DebugLog("HTTP response status: " + Str(resp.StatusCode))
    // See the online reference documentation for 
    // other information that can be obtained from the response object.

End If

// To send using SSL/TLS, do this instead.
// This sends to https://www.mywebserver123abc.com/rcvFormDataUpload.aspx
resp = http.SynchronousRequest("www.mywebserver123abc.com",443,True,req)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
Else
    System.DebugLog("HTTP response status: " + Str(resp.StatusCode))
    // See the online reference documentation for 
    // other information that can be obtained from the response object.

End If