KyS

@TechCoder, im no expert, but it seems like you should pass pointers to strings to those functions, I fiddled around mainly since you bothered to to put up a testing page and this seems to work : #include <libcURL.au3> Global $bMyData = Binary("") _Demo1() Func _Demo1() Local $user = "AutoItuser" Local $pass = "AutoItuser" Local $testit = InputBox("SELECT", "Enter 1 for 'CURLOPT_POST as in php'" & @CRLF & "2 for 'CUSTOMREQUEST as works in php'" & @CRLF & "or anything else for 'best AutoIt so far'", 1) Local $sURL = "http://cashflowproducts.com/test/Booked/Web/Services/Authentication/Authenticate" Local $body = '{"username":"' & $user & '","password":"' & $pass & '"}' Local $header_type = "POST" Local $hcurl = _curl_easy_init() ConsoleWrite("body is " & $body & @CRLF) If($hcurl) Then ; setup the URL Local $tCURLSTRUCT_URL = DllStructCreate("char[" & StringLen($sURL) + 1 & "]") DllStructSetData($tCURLSTRUCT_URL, 1, $sURL) _curl_easy_setopt($hcurl, $CURLOPT_URL, DllStructGetPtr($tCURLSTRUCT_URL)) ; set up for output of callback Local $handle = DllCallbackRegister("_my_vwrite", "uint:cdecl", "ptr;uint;uint;ptr") _curl_easy_setopt($hcurl, $CURLOPT_WRITEFUNCTION, DllCallbackGetPtr($handle)) Local $tbody = DllStructCreate("char[" & StringLen($body) + 1 & "]") DllStructSetData($tbody, 1, $body) Local $theader_type= DllStructCreate("char[" & StringLen($header_type) + 1 & "]") DllStructSetData($theader_type, 1, $header_type) _curl_easy_setopt($hcurl, $CURLOPT_VERBOSE, 1) If $testit = 1 Then ; STANDARD POST _curl_easy_setopt($hcurl, $CURLOPT_POST, True); _curl_easy_setopt($hcurl, $CURLOPT_COPYPOSTFIELDS, DllStructGetPtr($tbody)); ElseIf $testit = 2 Then ; using _curl_easy_setopt($hcurl, $CURLOPT_CUSTOMREQUEST, DllStructGetPtr($theader_type)); _curl_easy_setopt($hcurl, $CURLOPT_COPYPOSTFIELDS, DllStructGetPtr($tbody)); Else _curl_easy_setopt($hcurl, $CURLOPT_HTTPPOST, $body); EndIf Local $iRes = _curl_easy_perform($hcurl) If $iRes > $CURLE_OK Then ConsoleWrite("!CURL; " & _curl_easy_strerror($iRes) & @CRLF) ElseIf $iRes = $CURLE_OK Then ConsoleWrite("+>CURL; Success!" & @CRLF) Local $sContentType $iRes = _curl_easy_getinfo($hcurl, $CURLINFO_CONTENT_TYPE, $sContentType); If $iRes = $CURLE_OK Then ConsoleWrite("+>CURL; We received Content-Type: " & $sContentType & @CRLF); $reply = BinaryToString($bMyData) ConsoleWrite(@ScriptLineNumber & " " & " this is the reply we got =>>" & @CRLF & $reply & @CRLF & "<<=" & @CRLF) EndIf EndIf _curl_easy_cleanup($hcurl) EndIf EndFunc ;==>_Demo1 Func _my_vwrite($buffer, $size, $nmemb, $stream) Local $vData = DllStructCreate("byte[" & $size * $nmemb & "]", $buffer) $bMyData &= DllStructGetData($vData, 1) Return $size * $nmemb EndFunc ;==>_my_vwrite