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Set a Multipart Part Body from a StringBuilder

Demonstrates Rest.SetMultipartBodySb, which sets the text body of the selected multipart part from a StringBuilder.

Background. A multipart request is assembled part by part: the part selector chooses the part being built, header fields describe it, and a SetMultipartBody method supplies its content. The request is then sent with a multipart send or full-request method.

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llSuccess = .F.

loRest = createobject("CkRest")
llBTls = .T.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("example.com",443,llBTls,llBAutoReconnect)
if (llSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

//  Select the multipart part to build, and set its header fields.
loRest.PartSelector = "1"
loRest.AddHeader("Content-Disposition",'form-data; name="field1"')
loRest.AddHeader("Content-Type","application/json")

//  Set the text body of the selected part from a StringBuilder.
loSbBody = createobject("CkStringBuilder")
loSbBody.Append('{ "key": "value" }')
llSuccess = loRest.SetMultipartBodySb(loSbBody)
if (llSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    release loSbBody
    return
endif

lcResponseText = loRest.FullRequestMultipart("POST","/api/upload")
if (loRest.LastMethodSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    release loSbBody
    return
endif

? lcResponseText


release loRest
release loSbBody