Java Development

[emmacherry]

Hi all,

I am stuck with an issue related to socket connections.

On WIFI  I am opening a socket connection with the following line:

SocketConnection connection = (SocketConnection) Connector.open("socket://212.107.31.2:2299;deviceside=true;interface=wifi;");

As expected the line returns an object of type net.rim.device.cldc.io.tcpsocket.TcpClientConnection on which I can open InputStream and OutputStream without problems.

With WIFI disabled I use the following line to retrieve a socket connection over 3G:

SocketConnection connection = (SocketConnection) Connector.open("socket://212.107.31.2:2299;deviceside=true;");

This is where it gets weird as now an object of type net.rim.device.cldc.io.devicehttp.ClientProtocol is returned instead of the expected TcpClientConnection. Opening an InputStream on the ClientProtocol results in a EOFException, the stacktrace:

[0.0] EOFException
[0.0] No detail message
[0.0] net_rim_os-3(4BE21A1D)
[0.0]  Utilities
[0.0]  receiveLine
[0.0]  0xBAEC
[0.0] net_rim_os-3(4BE21A1D)
[0.0]  StatusLine
[0.0]  readFromStream
[0.0]  0xA480
[0.0] net_rim_os-2(4BE21A1D)
[0.0]  ClientProtocol
[0.0]  readResponse
[0.0]  0x16DE
[0.0] net_rim_os-3(4BE21A1D)
[0.0]  HttpProtocolBase
[0.0]  transitionToState
[0.0]  0x4120
[0.0] net_rim_os-3(4BE21A1D)
[0.0]  HttpProtocolBase
[0.0]  openInputStream
[0.0]  0x44B4
[0.0] net_rim_os-3(4BE21A1D)
[0.0]  HttpProtocolBase
[0.0]  openDataInputStream
[0.0]  0x44F0
[0.0] socket_test(4A71D639)
[0.0]  SocketThread
[0.0]  <private>
[0.0]  0x65DE
[0.0] socket_test(4A71D639)
[0.0]  SocketThread
[0.0]  run
[0.0]  0x46FE

BTW in case you are wondering I have a full data plan including direct TCP and I can confirm this when I use the sim card in my Android phone.

 What am I doing wrong? Any help is appreciated!!!

Thanks,

Emma

Details: Plattform 6.6.0.212, App Version 6.0.0.570, Device Curve 9300, Carrier Vodafone

[peter_strange · Accepted solution]

I would remove the trailing semicolon from here:

deviceside=true;");

and do the same for WiFi.

If you are using deviceside=true, then you need to have set up APN parameters for your carrier in the TCP Options on your device. 

I would also be a little cautious with the Port.  I have not be able to connect over anything but standard ports (80 and 443) when using socket connections over the carrier supplied TCP network.  Try what you are doing with a Server listening on port 80 and see if that works.  Then move it it to 2299. 

[emmacherry]

Thank you Peter for putting me on the right track. It was indeed a port issue. A call to the provider confirmed that my data plan is in fact unlimited in terms data volume not so, however, in terms of ports and services. In other words i am stuck with 80/443 unless i extend my data plan.

Thanks again Peter, you made my day!!!

Emma