PowerBuilder
PowerBuilder
Read the REST Response Body into BinData
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Demonstrates Rest.ReadRespBd, which reads the response body as raw bytes into a BinData, replacing its previous contents.
The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.
Background. The staged request model separates sending from reading: a
SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.Chilkat PowerBuilder Downloads
integer li_rc
integer li_Success
oleobject loo_Rest
integer li_BTls
integer li_BAutoReconnect
integer li_StatusCode
oleobject loo_SbError
oleobject loo_BdResponse
integer li_BSaved
li_Success = 0
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
li_BTls = 1
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("example.com",443,li_BTls,li_BAutoReconnect)
if li_Success = 0 then
Write-Debug loo_Rest.LastErrorText
destroy loo_Rest
return
end if
// The file paths are relative to the application's current working directory. Absolute paths
// may also be used. Supply the paths appropriate to your own environment.
li_Success = loo_Rest.SendReqNoBody("GET","/api/images/1")
if li_Success = 0 then
Write-Debug loo_Rest.LastErrorText
destroy loo_Rest
return
end if
li_StatusCode = loo_Rest.ReadResponseHeader()
if li_StatusCode < 0 then
Write-Debug loo_Rest.LastErrorText
destroy loo_Rest
return
end if
// Check for the expected success status code. If the response is not 200, the body is likely
// error text formatted as JSON, XML, or HTML rather than the expected binary content. In that case
// read the body as text, report it, and return.
if li_StatusCode <> 200 then
loo_SbError = create oleobject
li_rc = loo_SbError.ConnectToNewObject("Chilkat.StringBuilder")
li_Success = loo_Rest.ReadRespSb(loo_SbError)
if li_Success = 0 then
Write-Debug loo_Rest.LastErrorText
destroy loo_Rest
destroy loo_SbError
return
end if
Write-Debug "Request failed with status code " + string(li_StatusCode)
Write-Debug loo_SbError.GetAsString()
destroy loo_Rest
destroy loo_SbError
return
end if
// The status code is 200. Read the response body as raw bytes into a BinData.
loo_BdResponse = create oleobject
li_rc = loo_BdResponse.ConnectToNewObject("Chilkat.BinData")
li_Success = loo_Rest.ReadRespBd(loo_BdResponse)
if li_Success = 0 then
Write-Debug loo_Rest.LastErrorText
destroy loo_Rest
destroy loo_SbError
destroy loo_BdResponse
return
end if
li_BSaved = loo_BdResponse.WriteFile("qa_output/image.png")
if li_BSaved <> 1 then
Write-Debug "Failed to save the response body."
destroy loo_Rest
destroy loo_SbError
destroy loo_BdResponse
return
end if
Write-Debug "Received " + string(loo_BdResponse.NumBytes) + " bytes."
destroy loo_Rest
destroy loo_SbError
destroy loo_BdResponse