PowerBuilder

Explaining the Rest ClearResponseBodyStream Method

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The ClearResponseBodyStream method would be needed if your applicaiton called SetResponseBodyStream to send the response to a stream for one request, but then wants to subsequently do something else. The application must call ClearResponseBodyStream to no longer send responses to the stream. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Rest
integer li_BTls
integer li_Port
integer li_BAutoReconnect
oleobject loo_FileStream
integer li_ExpectedStatus
string ls_ResponseStr
oleobject loo_Bd

li_Success = 0

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

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")
if li_rc < 0 then
    destroy loo_Rest
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Connect to the web server
li_BTls = 1
li_Port = 443
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("www.chilkatsoft.com",li_Port,li_BTls,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

// Setup a file stream for the download
loo_FileStream = create oleobject
li_rc = loo_FileStream.ConnectToNewObject("Chilkat.Stream")

loo_FileStream.SinkFile = "qa_output/starfish.jpg"

// Indicate that the call to FullRequestNoBody should send the response body
// to fileStream if the response status code is 200.
// If a non-success response status code is received, then nothing
// is streamed to the output file and the error response is returned by FullRequestNoBody.
li_ExpectedStatus = 200
loo_Rest.SetResponseBodyStream(li_ExpectedStatus,1,loo_FileStream)

ls_ResponseStr = loo_Rest.FullRequestNoBody("GET","/images/starfish.jpg")
if loo_Rest.LastMethodSuccess = 0 then
    // Examine the request/response to see what happened.
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body (if any): " + ls_ResponseStr
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    destroy loo_Rest
    destroy loo_FileStream
    return
end if

Write-Debug "downloaded starfish.jpg"

// Clear the response body stream previously set in the call to SetResponseBodyStream.
loo_Rest.ClearResponseBodyStream()

// Download something else, but this time send the response body to bd.
loo_Bd = create oleobject
li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_Rest.FullRequestNoBodyBd("GET","/images/penguins.jpg",loo_Bd)
if li_Success = 0 then
    // Examine the request/response to see what happened.
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body (if any): " + loo_Bd.GetString("utf-8")
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    destroy loo_Rest
    destroy loo_FileStream
    destroy loo_Bd
    return
end if

// Save the contents of bd to a file.
li_Success = loo_Bd.WriteFile("qa_output/penguins.jpg")

Write-Debug "Success: " + string(li_Success)


destroy loo_Rest
destroy loo_FileStream
destroy loo_Bd