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ActiveSync swallows SocketException

Posted on 2008-10-13
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Last Modified: 2013-12-21
Hi all,

I'm experiencing unexpected behaviour from ActiveSync, when establishing socket connections with a Windows Mobile 6 Classic emulator.

When the emulator is not cradled (and thus not connected to ActiveSync), System.Net.Sockets.Socket.Connect() properly throws a SocketException, when I try to connect to non existant IP/port combinations.

When the emulator is cradled (and connected to ActiveSync) however, I can connect to arbitrary IP/port combinations, without getting a SocketException.

Can this be fixed? I need the SocketException, to reliably check wether a server is available or not.

The development environment is:
Windows XP Professional SP3
Visual Studio 2008 SP1
.NET Compact Framework 3.5 SP1
Windows Mobile 6 Classic Emulator
Device Emulator Manager 9.0
ActiveSync 4.5

string host = "some valid ip or hostname";
string port = "some valid port";
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var ip = Dns.GetHostEntry(host).AddressList.First();
var ipendpoint = new IPEndPoint(ip, Convert.ToInt32(port));
socket.Connect(ipendpoint);

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Question by:justanoob
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justanoob earned 0 total points
ID: 22719349
I solved my problem. Not with the emulator though. I just discovered that the socket connections work fine with a cradled device, just not with a cradled emulator.

The cradled device is what I really need though. I didn't expect different behaviour on that side, so I assumed if the emulator fails, the device must fail likewise.

Jan
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