private void InitView()
{
Content = new StackLayout()
{
Padding = new Thickness(0, Device.OnPlatform(20, 0, 0), 0, 0),
Children =
{
new ClientConnectView("127.0.0.1", 11011, this)
{
ConnectTapped = async(s, i) =>
{
await _client.ConnectAsync(s, i);
_canceller = new CancellationTokenSource();
_client.MessageReceived += (sender, args) =>
{
var data = args.ByteData.ToStringFromUTF8Bytes();
var from = String.Format("{0}:{1}", args.RemoteAddress, args.RemotePort);
var msg = new Message
{
Text = data,
DetailText =
String.Format("<Received from {1} at {0}>", DateTime.Now.ToString("HH:mm:ss"),
from)
};
_messagesSub.OnNext(msg);
};
return(true);
},
DisconnectTapped = async() =>
{
var bytes = "<EOF>".ToUTF8Bytes();
await _client.SendAsync(bytes);
_canceller.Cancel();
await _client.DisconnectAsync();
}
},
new MessagesView(_messagesObs, true)
{
SendData = async s =>
{
var bytes = s.ToUTF8Bytes();
await _client.SendAsync(bytes);
return(new Message
{
Text = s,
DetailText = String.Format("Sent at {0}", DateTime.Now.ToString("HH:mm:ss"))
});
}
}
}
};
}
private static void StopDiscovery()
{
if (null != transmitSocket)
{
transmitSocket.DisconnectAsync();
}
if (null != receiveSocket)
{
receiveSocket.StopListeningAsync();
}
}
public async void Stop()
{
if (!connected)
{
return;
}
await receiver.DisconnectAsync();
receiver.Dispose();
await sender.DisconnectAsync();
sender.Dispose();
connected = false;
}
async public static Task <ServerList> BrowseForNoahServers(string friendlyName, string ipAddress)
{
var client = new UdpSocketClient();
var receiver = new UdpSocketReceiver();
try
{
var address = GetIpAddressForBroadcast(ipAddress);
//// convert our greeting message into a byte array
string clientGUID = "{B0BE0E7D-F70B-40BE-91AB-14125863B0B7}";
System.Text.Encoding enc = System.Text.Encoding.UTF8;
byte[] sendBuffer = enc.GetBytes(clientGUID);
receiver.MessageReceived += (sender, args) =>
{
try
{
var from = String.Format("{0}:{1}", args.RemoteAddress, args.RemotePort);
var fromIp = args.RemoteAddress;
var data = Encoding.UTF8.GetString(args.ByteData, 0, args.ByteData.Length);
try
{
LocalRemoteHostInfo payload =
Helpers.Deserialize <LocalRemoteHostInfo>(Encoding.UTF8.GetString(args.ByteData, 0,
args.ByteData.Length));
string guid = payload.LocalNoahServerGuid;
if (guid.Equals("{5FE140D5-1D3F-4E46-8892-15FA89DAE9F4}"))
{
bool duplicate = false;
foreach (ServerData servData in ServerCollection)
{
if (servData.ServerIp.Equals(fromIp))
{
duplicate = true; //The adress is allready in the list
break;
}
}
if (duplicate == false) //No need to list Gatteway IP
{
if (string.IsNullOrEmpty(friendlyName))
{
ServerCollection.Add(new ServerData
{
ServerName = payload.HostName,
FriendlyName = payload.FriendlyName,
ServerIp = payload.LocalHostIpAddress,
RemoteHostId = payload.RemoteHostId
});
}
else
{
if (friendlyName == payload.FriendlyName)
{
receiver.StopListeningAsync();
ServerCollection.Add(new ServerData
{
ServerName = payload.HostName,
FriendlyName = payload.FriendlyName,
ServerIp = payload.LocalHostIpAddress,
RemoteHostId = payload.RemoteHostId
});
//client.Dispose();
//receiver.Dispose();
waitTime = false;
}
}
}
}
}
catch { }
}
catch { }
};
try
{
receiver.StartListeningAsync(listenPort);
}
catch (Exception e)
{
}
client.ConnectAsync(address, port);
client.SendAsync(sendBuffer);
DateTime now = DateTime.Now;
DateTime stop = now + new TimeSpan(0, 0, 0, 5);
while (waitTime)
{
if (DateTime.Now > stop)
{
waitTime = false;
}
}
}
catch (Exception e)
{
Log.ErrorFormat("Himsa.Noah.MobileAccessLayer.NoahServerUdpBrowser::BrowseForNoahServers(): {0}", e);
throw;
}
finally
{
client.DisconnectAsync();
receiver.StopListeningAsync();
receiver.Dispose();
}
return(new ServerList
{
Servers = ServerCollection.ToArray()
});
}