Unity3D - Websockets and C#

We have a light weight receive function in our client code, we use json for our messaging bus. Unity3d crashes whenever an attempt to receive on the established socket, anyone know how to test a web socket connection to verify that it has data/is readable? :
public Hashtable RecvMsg()
{
lock(locker)
{
string recvMsg;
recvMsg = webSocket.Recv();

Hashtable message = new Hashtable();
message = JsonMapper.ToObject(recvMsg);

Hashtable result = new Hashtable();

if(message["messageStatus"].ToString() == "True")
{
result = JsonMapper.ToObject(message["messageResult"].ToString());
return result;
}
else
{
Debug.Log(message["messageError"].ToString());
return null;
}
}

/*
lock(locker) {
string msg = webSocket.Recv();
if(msg != null)
{
//string msg = opSec.DecryptText(iMsg, iKey, iIV);
Hashtable data = new Hashtable();
data = JsonMapper.ToObject(msg);
queue.Enqueue(data);
print("msg received");
}
}
*/
}