Xamarin Android (C#) Sample Xmpp Nimbuzz using Socket Connection (TcpClient)

################ Basic Requirements: ################

-  Xamarin Studio 6.1.6 (Latest)
-  SDK Tools Version: 25.2.3
-  SDK Platform Tools Version: 25.0.1
-  SDK Build Tools Version: 23.0.1
-  Android NDK
-  SDK Platform:
4.0.3 (API level 15)
4.2   (API level 17)
4.4   (API level 19)
6.0   (API level 23)
7.0   (API level 24)
-  Microsoft .NET 4.0.30319.42000
-  Xamarin.Android Version: 7.0.1.6
-  GTK# 2.12.38

################ Key Features: ################

- Xamarin Xmpp Client Sample (C#) For Android
- Socket Connection

################ Feedback: ################

- For any kind of further queries or bugs, kindly do not hesistate to write me at: dbh4ck@gmail.com
- http://dbh4ck.blogspot.in


Download Full Source Code From My Github

Download Apk

	using Android.App;
	using Android.Widget;
	using Android.OS;
	using System.Net.Sockets;
	using System;
	using System.Text;
	using System.Threading;
	using Android.Content;
	using Android.Views;
	namespace Nimbuzz_Xamarin_Android_Db
	{
	[Activity(Label = "Nimbuzz Xamarin Android By Db~@NC", MainLauncher = true, Icon = "@mipmap/icon")]
	public class MainActivity : Activity
	{
	// Make Socket Universal throughout App (Make Use socket anywhere in any Activity of this App)
	public static TcpClient client;
	public static string passid;
	protected override void OnCreate(Bundle savedInstanceState)
	{
	base.OnCreate(savedInstanceState);
	// Set our view from the "main" layout resource
	SetContentView(Resource.Layout.Main);
	Button btnSignIn = FindViewById<Button>(Resource.Id.btnSignin);
	btnSignIn.Click += delegate
	{
	login();
	};
	}
	void login()
	{
	// Get UserName and PassWord From User
	EditText userName = FindViewById<EditText>(Resource.Id.txtUser);
	EditText userPwd = FindViewById<EditText>(Resource.Id.txtPwd);
	var usrid = userName.Text;
	var usrpwd = userPwd.Text;
	// Initialize New TcpClient Connection
	try
	{
	client = new TcpClient() { NoDelay = true };
	client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
	client.Client.Connect("o.nimbuzz.com", 5222);
	Toast.MakeText(this, "Connecting...", ToastLength.Short).Show();
	NetworkStream stream = client.GetStream();
	if (client.Client.Connected)
	{
	client.Client.Send(Encoding.UTF8.GetBytes("<stream:stream xmlns='jabber:client' to='nimbuzz.com' version='1.0' xmlns:stream='http://etherx.jabber.org/streams' xml:lang='en' >"));
	string str = Convert.ToBase64String(Encoding.UTF8.GetBytes("\0" + usrid + "\0" + usrpwd));
	client.Client.Send(Encoding.UTF8.GetBytes("<auth id='sasl2' xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" + str + "</auth>"));
	}
	// Start Thread On Successfull Connection
	Thread rec = new Thread(new ThreadStart(dbThread));
	rec.IsBackground = true;
	rec.Start();
	}
	catch (SocketException ex) {
	}
	}
	void dbThread()
	{
	try
	{
	while (client.Connected)
	{
	byte[] buffbyte = new byte[client.ReceiveBufferSize];
	int i = client.Client.Receive(buffbyte);
	if (i != 0)
	{
	if (i < buffbyte.Length)
	{
	byte[] buffbyte2 = new byte[i];
	for (int b = 0; b < i; b++)
	{
	buffbyte2[b] = buffbyte[b];
	}
	buffbyte = buffbyte2;
	}
	// Handles the incoming data received from Server side
	string xml = Encoding.UTF8.GetString(buffbyte);
	DataArrival(xml);
	// Ping Server every 60 seconds to avoiding auto-disconnect
	int startin = 60 - DateTime.Now.Second;
	var t = new System.Threading.Timer(o => client.Client.Send(Encoding.UTF8.GetBytes("<iq to='nimbuzz.com' type='get' id='db1_a2'><ping xmlns='urn:xmpp:ping' /></iq>")), null, startin * 1000, 60000);
	}
	}
	}
	catch (Exception ex)
	{
	//Toast.MakeText(this, ex.ToString(), ToastLength.Short).Show();
	}
	}
	void DataArrival(string xml)
	{
	xml = xml.Replace("\"", "'");
	if (xml.IndexOf("<success xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>", System.StringComparison.OrdinalIgnoreCase) + 1 != 0)
	{
	// Register Client
	// Bind Resource
	// Open session
	client.Client.Send(Encoding.UTF8.GetBytes("<stream:stream xmlns='jabber:client' to='nimbuzz.com' version='1.0' xmlns:stream='http://etherx.jabber.org/streams' xml:lang='en' >"));
	client.Client.Send(Encoding.UTF8.GetBytes("<iq type='set'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><resource>dbhere</resource></bind></iq>"));
	client.Client.Send(Encoding.UTF8.GetBytes("<iq id='jcl_2' type='set'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>"));
	}
	if (xml.IndexOf("<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>", System.StringComparison.OrdinalIgnoreCase) + 1 != 0)
	{
	//Toast.MakeText(this, "Logged in Successfully!", ToastLength.Short).Show();
	client.Client.Send(Encoding.UTF8.GetBytes("<presence><status>Online Via Xamarin C# (Android)</status><priority>1</priority><show>Online</show><nick xmlns='http://jabber.org/protocol/nick'>XamarinDb</nick></presence>"));
	EditText userName = FindViewById<EditText>(Resource.Id.txtUser);
	passid = userName.Text;
	var LoggedInt = new Intent(this, typeof(LoggedActivity));
	LoggedInt.PutExtra("usrid", passid); //pass value to Logged Activity
	StartActivity(LoggedInt);
	}
	if (xml.Contains("<failure xmlns="))
	{
	//Toast.MakeText(this, "Invalid Username & Password", ToastLength.Short).Show();
	client.Client.Close(); // close socket
	}
	}
	public override bool OnCreateOptionsMenu(IMenu menu)
	{
	base.OnCreateOptionsMenu(menu);
	// Inflate the menu; this adds items to the action bar if it is present.
	MenuInflater inflater = this.MenuInflater;
	inflater.Inflate(Resource.Menu.menuoption, menu);
	return true;
	}
	public override bool OnOptionsItemSelected(IMenuItem item)
	{
	base.OnOptionsItemSelected(item);
	switch (item.ItemId) {
	case Resource.Id.about:
	aboutDialog();
	break;
	case Resource.Id.exit:
	Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
	break;
	default:
	break;
	}
	return true;
	}
	void aboutDialog()
	{
	/*
	var myalert = new AlertDialog.Builder(this);
	myalert.SetTitle("About App");
	myalert.SetMessage("This is Xamarin Android App Coded in C# based on Socket Programming");
	myalert.SetNeutralButton("OK", (senderAlert, args) =>
	{
	this.Dispose();
	});
	Dialog dialog = myalert.Create();
	dialog.Show();
	**/
	Toast.MakeText(this, "Xamarin Android Coded By Db~@NC", ToastLength.Long).Show();
	}
	}
	}

view raw MainActivity.cs hosted with ❤ by GitHub

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using Android.App;
	using Android.Content;
	using Android.OS;
	using Android.Runtime;
	using Android.Views;
	using Android.Widget;
	namespace Nimbuzz_Xamarin_Android_Db
	{
	[Activity(Label = "LoggedActivity")]
	public class LoggedActivity : Activity
	{
	protected override void OnCreate(Bundle savedInstanceState)
	{
	base.OnCreate(savedInstanceState);
	// Set our view from the layout resource
	SetContentView(Resource.Layout.LoggedLayout);
	TextView jidlbl = FindViewById<TextView>(Resource.Id.textView5);
	TextView jidUser = FindViewById<TextView>(Resource.Id.textView6);
	jidUser.Text = Intent.GetStringExtra("usrid") + "@nimbuzz.com";
	//MainActivity.client.Client.Send(Encoding.UTF8.GetBytes("<message to='db~@nimbuzz.com' type='chat' id='-4587545787'><body>im Online</body><active xmlns ='http://jabber.org/protocol/chatstates' /><request xmlns='urn:xmpp:receipts' /></message>"));
	MainActivity.client.Client.Send(Encoding.UTF8.GetBytes("<presence to='db~@nimbuzz.com' type='subscribe' />"));
	Button logout_btn = FindViewById<Button>(Resource.Id.logoutbtn);
	logout_btn.Click += delegate
	{
	if (MainActivity.client.Client.Connected == true) {
	MainActivity.client.Client.Dispose();
	MainActivity.client.Client.Close();
	// Throw back to MainACtivity after Logout Connection Closing
	StartActivity(typeof(MainActivity));
	}
	};
	}
	public override bool OnCreateOptionsMenu(IMenu menu)
	{
	base.OnCreateOptionsMenu(menu);
	// Inflate the menu; this adds items to the action bar if it is present.
	MenuInflater inflater = this.MenuInflater;
	inflater.Inflate(Resource.Menu.loggedmenuoption, menu);
	return true;
	}
	public override bool OnOptionsItemSelected(IMenuItem item)
	{
	base.OnOptionsItemSelected(item);
	string strinfo = "You are currently Logged as: " + Intent.GetStringExtra("usrid") + "@nimbuzz.com";
	switch (item.ItemId)
	{
	case Resource.Id.info:
	Toast.MakeText(this, strinfo , ToastLength.Long).Show();
	break;
	case Resource.Id.exit:
	Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
	break;
	default:
	break;
	}
	return true;
	}
	}
	}

view raw LoggedActivity.cs hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<ScrollView xmlns:tools="http://schemas.android.com/tools"
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/scroll"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:transcriptMode="normal"
	android:fillViewport="true">
	<RelativeLayout xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:paddingBottom="@dimen/activity_vertical_margin"
	android:paddingLeft="@dimen/activity_horizontal_margin"
	android:paddingRight="@dimen/activity_horizontal_margin"
	android:paddingTop="@dimen/activity_vertical_margin">
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="561.5dp"
	android:orientation="vertical"
	android:layout_centerVertical="true"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:layout_marginBottom="0.0dp">
	<TextView
	android:textSize="20dp"
	android:textColor="#fb0564"
	android:id="@+id/lbldb"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_marginTop="46dp"
	android:text="@string/hello_db"
	android:textAlignment="center"
	android:gravity="center_horizontal" />
	<TextView
	android:textSize="20sp"
	android:textColor="#fce907ed"
	android:id="@+id/textView2"
	android:layout_width="345.5dp"
	android:layout_height="wrap_content"
	android:text="@string/login"
	android:layout_marginTop="16dp"
	android:layout_below="@+id/lbldb"
	android:textAlignment="center"
	android:gravity="left" />
	<Space
	android:layout_width="338.0dp"
	android:layout_height="10dp" />
	<EditText
	android:id="@+id/txtUser"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:hint="Enter Your Username"
	android:inputType="text"
	android:layout_below="@+id/textView2"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:layout_marginTop="22dp"
	android:textColor="@color/colorPrimaryDark" />
	<Space
	android:layout_width="match_parent"
	android:layout_height="20dp" />
	<EditText
	android:id="@+id/txtPwd"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:hint="Enter Your Password"
	android:inputType="textPassword"
	android:layout_below="@+id/txtUser"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:layout_marginTop="21dp"
	android:textColor="@color/colorPrimaryDark" />
	<ProgressBar
	style="?android:attr/progressBarStyle"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/progressBar"
	android:layout_above="@+id/btnSignin"
	android:layout_centerHorizontal="false"
	android:indeterminate="false"
	android:visibility="invisible"
	android:layout_gravity="center" />
	<Button
	android:textColor="#0b42f6"
	android:id="@+id/btnSignin"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:text="@string/btn_login"
	android:layout_marginBottom="44dp"
	android:layout_above="@+id/textViewDbLink"
	android:layout_centerHorizontal="true" />
	<TextView
	android:textColor="#fc4108"
	android:autoLink="web"
	android:id="@+id/textViewDbLink"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:text="@string/lbl_dbh4ck"
	android:textAlignment="center"
	android:layout_marginBottom="14dp"
	android:layout_above="@+id/textViewDbEmail"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:layout_alignParentRight="true"
	android:layout_alignParentEnd="true"
	android:gravity="center_horizontal" />
	<TextView
	android:textColor="#198104"
	android:id="@+id/textViewDbEmail"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:text="@string/lbl_dbmail"
	android:layout_marginBottom="20dp"
	android:layout_alignParentBottom="true"
	android:layout_centerHorizontal="true"
	android:textAlignment="center"
	android:gravity="center_horizontal" />
	</LinearLayout>
	</RelativeLayout>
	</ScrollView>

view raw Main.axml hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<ScrollView xmlns:tools="http://schemas.android.com/tools"
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/scroll"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:transcriptMode="normal"
	android:fillViewport="true">
	<RelativeLayout
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:elevation="1dp">
	<!-- TODO: Update blank fragment layout -->
	<TextView
	android:id="@+id/textView5"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_marginTop="44dp"
	android:text="@string/botid"
	android:textStyle="normal|bold"
	android:textSize="18sp"
	android:textAlignment="center"
	android:textColor="@color/colorPrimaryDark"
	android:gravity="center_horizontal" />
	<TextView
	android:text="TextView"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_marginTop="36dp"
	android:id="@+id/textView6"
	android:textSize="20sp"
	android:textColor="@color/colorPrimaryDark"
	android:textStyle="normal|bold"
	android:fontFamily="monospace"
	android:layout_below="@+id/textView5"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:textAlignment="center"
	android:gravity="center_horizontal" />
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/logout"
	android:id="@+id/logoutbtn"
	android:textSize="20sp"
	android:textColor="#ff1ca6f4"
	android:textAllCaps="false"
	android:gravity="center"
	android:typeface="serif"
	android:textStyle="bold"
	android:layout_centerHorizontal="true"
	android:layout_centerVertical="true" />
	</RelativeLayout>
	</ScrollView>

view raw LoggedLayout.axml hosted with ❤ by GitHub