public IAsyncOperation<string> Connect() {
var window = CoreWindow.GetForCurrentThread();
return Task.Run<string>(async () =>
{
try
{
var socket = this.socket = new Windows.Networking.Sockets.StreamSocket();
await socket.ConnectAsync(new HostName("talk.google.com"), "5222", SocketProtectionLevel.PlainSocket);
await log(window, "connected!");
reader = new DataReader(socket.InputStream);
writer = new DataWriter(socket.OutputStream);
reader.InputStreamOptions = InputStreamOptions.Partial;
Write("<?xml version='1.0'?>\n<stream:stream to='" + server + "' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>");
xmlStream = new XmlStream();
bool shouldRead = true;
xmlStream.SetCallback(async (promptRead, data) => {
await log(window, "data " + data);
if (promptRead)
{
if (shouldRead)
{
await log(window, "prompt read");
await reader.LoadAsync(4096);
var buffer = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(buffer);
await log(window, "in " + Encoding.UTF8.GetString(buffer, 0, buffer.Length));
xmlStream.Update(buffer, 0, buffer.Length);
}
else
{
await log(window, "read blocked");
}
}
else if (data.IndexOf("stream:features") != -1)
{
Write("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls' />");
}
else if (data.IndexOf("proceed") != -1)
{
await log(window, "SSL Strength: " + socket.Information.ProtectionLevel);
writer.DetachStream();
reader.DetachStream();
shouldRead = false;
if (server == "gmail.com")
{
await socket.UpgradeToSslAsync(SocketProtectionLevel.Ssl, new Windows.Networking.HostName("gmail.com"));
}
else
{
await socket.UpgradeToSslAsync(SocketProtectionLevel.Ssl, new Windows.Networking.HostName("talk.google.com"));
}
writer = new DataWriter(socket.OutputStream);
reader = new DataReader(socket.InputStream);
reader.InputStreamOptions = InputStreamOptions.Partial;
await log(window, "upgraded!");
await log(window, "SSL Strength: " + socket.Information.ProtectionLevel);
Write("<?xml version='1.0'?>\n<stream:stream to='" + server + "' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>");
xmlStream.SetCallback(async (shouldRead2, data2) =>
{
await log(window, "data " + data2);
if (shouldRead2)
{
await reader.LoadAsync(4096);
var buffer = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(buffer);
await log(window, "in " + Encoding.UTF8.GetString(buffer, 0, buffer.Length));
xmlStream.Update(buffer, 0, buffer.Length);
}
else if (data2.Contains("X-GOOGLE-TOKEN"))
{
var token = Convert.ToBase64String(Encoding.UTF8.GetBytes('\x00' + this.username + '\x00' + this.auth));
Write("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='X-GOOGLE-TOKEN'>" + token + "</auth>");
}
else if (data2.Contains("failure"))
{
if (Disconnect != null) Disconnect(this, "auth failure");
}
else if (data2.Contains("success"))
{
var messageEvent = Message;
xmlStream.SetCallback(async (shouldRead3, data3) =>
{
if (shouldRead3)
{
await reader.LoadAsync(4096);
var buffer = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(buffer);
await log(window, "in " + Encoding.UTF8.GetString(buffer, 0, buffer.Length));
xmlStream.Update(buffer, 0, buffer.Length);
}
else if (data3 == "</stream:stream>")
{
await disconnect(window, "end of stream");
}
else if (!data3.StartsWith("<stream:stream"))
{
await message(window, data3);
}
});
Write("<?xml version='1.0'?>\n<stream:stream to='" + server + "' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>");
}
else if (!data2.StartsWith("<stream:stream"))
{
await log(window, "Ummm not sure what to do with '" + data2 + "'. flee.");
if (Disconnect != null) Disconnect(this, "protocol error");
}
});
}
else if (!data.StartsWith("<stream:stream"))
{
await log(window, "Ummm not sure what to do with '" + data + "'. flee.");
if (Disconnect != null) Disconnect(this, "protocol error");
}
});
return "ok";
}
catch (Exception e)
{
return e.ToString();
}
}).AsAsyncOperation<string>();
}