Wininet HttpSendRequest over GPRS

---

Hi

I wondered if anyone has any tips on using Wininet over GPRS. I'm currenct using eVc 4 to write an application that sends data to a web server using the Wininet HttpSendRequest or HttpSendRequestEx Functions. The problem I get is when I try to send more than about 10k of data I get a server timeout using the GPRS connection but everything seems fine when I have the XDAii in the cradle.

Ok so the problem seems to be GPRS being slow and unreliable but I have experimented with sending the data in 1k chunks and the problem comes when trying to end the http request with HttpEndRequest. I have checked the server timeouts on my IIS server and they are all set to 15 minutes.

Does anyone have any clues?

This is the code I use to do a similar thing with a photo which works quite well
Are you setting the response to nothing?

GPRS is very unreliable but I have managed to send 70k files over it.
==========
Private Function FileUpload(ByVal sURL As String, ByVal sFile As String) As String
On Error GoTo eh

Dim binReader As BinaryReader
Dim byteArray() As Byte

binReader = New BinaryReader(File.OpenRead(sFile))
byteArray = binReader.ReadBytes(binReader.BaseStream.Length)

Dim httpURI As New Uri(sURL & sFile)
Dim httpRequest As HttpWebRequest = httpRequest.Create(httpURI)
httpRequest.Method = "POST"
httpRequest.ContentLength = binReader.BaseStream.Length

Dim httpReqStream As Stream
httpReqStream = httpRequest.GetRequestStream
httpReqStream.Write(byteArray, 0, byteArray.Length)
httpReqStream.Close()

Dim httpResponse As HttpWebResponse
httpResponse = httpRequest.GetResponse

Dim sResponse As String
sResponse = CStr(httpResponse.StatusDescription)
FileUpload = "OK"
httpResponse.Close()

binReader.Close()
httpURI = Nothing
httpRequest = Nothing
httpReqStream = Nothing
binReader = Nothing
httpResponse = Nothing
byteArray = Nothing

Exit Function

eh:
MsgBox(Err.Description)
binReader.Close()
FileUpload = "ERROR"
httpURI = Nothing
httpRequest = Nothing
httpReqStream = Nothing
binReader = Nothing
httpResponse = Nothing
End Function
===================

My code seems to be fine as when I used my mates Vodafone sim in the Xda ii I was able to send a 40k file straight away. It seems there is a limit somewhere around the 8-9k mark in the O2 gprs apn. I have to now get on to 02 and find out how they will let me send more than 8k at a time.

There is a problem with O2. They had to give me a new username and password to log onto their network, which has different privileges, to get around it.

Good Luck