Hi,
I am new the BB programming and as you can see in my other posts I am trying to transfer data from a PC to a Blackberry. I tried webservices (too complicated, integration with .NET webservices faulty), so I moved to Socket connections. From that I learned that I have to care about the protocol, e.g. error correcting, flow control etc myself. I wrote some kind of simple protocol but sometimes got the problem that the connection simply "hangs".
I am using a BB 8900, JDE 4.6.1 and a direct connection via WIFI, C# 2008 on W7 on the other side.
I did not want to give up, so I tried HTTP connections - hooray - lots of my code is not important anymore, so I can post my short apps here:
C# server side
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Threading;
using System.IO;
namespace FileSyncer2
{
class Program
{
static void Main(string[] args)
{
HttpListener oHttpListener = new HttpListener();
oHttpListener.Prefixes.Add("http://192.168.42.2:8080/");
oHttpListener.Start();
Console.WriteLine("Listener started");
for (;;)
{
HttpListenerContext oContext = oHttpListener.GetContext();
new Thread(new Worker(oContext).ProcessRequest).Start();
}
}
class Worker
{
private HttpListenerContext oContext;
public Worker(HttpListenerContext oContext)
{
this.oContext = oContext;
}
public void ProcessRequest()
{
string msg = oContext.Request.HttpMethod + " " + oContext.Request.Url + " " + oContext.Request.RawUrl;
Console.WriteLine(msg);
oContext.Response.StatusCode = (int)HttpStatusCode.OK;
byte[] vBuffer = new byte[409600];
oContext.Response.ContentLength64 = new FileInfo("C:\\dummyfile.bin").Length;
FileStream oSR = new FileStream("C:\\dummyfile.bin", FileMode.Open);
BinaryReader oBR = new BinaryReader(oSR);
int vReadBytes = -1;
Stream oStream = oContext.Response.OutputStream;
while (vReadBytes != 0)
{
vReadBytes = oBR.Read(vBuffer, 0, 409600);
if (vReadBytes != 0)
try
{
oStream.Write(vBuffer, 0, vReadBytes);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.WriteLine("Still Reading...");
}
oStream.Close();
oStream.Dispose();
oBR.Close();
oSR.Close();
}
}
}
}
}
This does not seem to be too complicated, I am listening for a GET request on port 8080 and for any request I am sending the dummy file.
Now for the Blackberry part:
HttpConnection httpConnection = (HttpConnection) Connector.open("http://192.168.42.2:8080/dummyfile.bin;deviceside=true;interface=wifi", Connector.READ_WRITE);
httpConnection.setRequestMethod(HttpConnection.GET);
int responseCode = httpConnection.getResponseCode();
if (responseCode == HttpConnection.HTTP_OK)
{
InputStream inputStream = httpConnection.openInputStream();
FileConnection oFileConnection = (FileConnection)Connector.open("file:///SDCard/Blackberry/music/dummyfile.bin",Connector.READ_WRITE);
if (oFileConnection.exists())
oFileConnection.delete();
long vTotal=httpConnection.getLength();
oFileConnection.create();
OutputStream oFileOutputStream = oFileConnection.openOutputStream();
byte[] vBuffer = new byte[102400];
int vLength=0;
long vRead=0;
while (-1 != (vLength = inputStream.read(vBuffer)))
{
oFileOutputStream.write(vBuffer, 0, vLength);
vRead+=vLength;
oGaugeField.setValue((int)net.rim.device.api.util.MathUtilities.round(100.0/vTotal*vRead));
}
httpConnection.close();
oFileOutputStream.close();
oFileConnection.close();
}
That´s not too complicated as well. I put this in a loop and sometimes at the first try and sometimes later the progress simply stops. It then throws an exception at the c# code at oStream.Close(), but the progress bar is still somewhere between 0 and 100.
I´ve had the same problems with simple SocketConnections, the issue exists on both, simulator and 8900. Any ideas? This can´t be so complicated ....
TIA!
ort;deviceside=true). I was able to transmit and recv for many MBytes in a few hours until I kill it. There are two seperate threads. One for recv and one for send, and I keep counters (keep track of bytes send and recv) on the thread objects. I make a menu item action to peek into those counters. I was able to leave the app running for hours and end.
oesn't http connection go through the carrier's proxy? Wonder if that has anything to do with it.