Communication of an Android client with Python server

I have an extremely basic Python server and an Android client, but I can not establish the connection. I have a client also done in Python and another in Java, and both connect perfectly to the server.

I've tried different versions of Android, I've disabled antivirus and windows firewall, but it still does not work.

Here are the codes:

Python code

#Programa Servidor
import socket

host = "" #IP do servidor
port = 5000 #Porta disponível do servidor

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) #Cria um novo socket
s.bind((host, port)) #Vincula o socket ao IP e Porta correspondente
s.listen(5) #Define o limite de conexões

print("Aguardando conexao...")

conn, addr = s.accept() #Aceita a conexão

print("Connected by", addr)

data = conn.recv(1024)

#print(data.decode())

while True:
    data = conn.recv(1024) #Aguarda uma determinada informação enviada de um remoto

    print(repr(data)) #Converte a informação para string

    if(repr(data)=="b'sair'"):
        estado = 1

conn.close()

Android Studio Code

XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    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"
    tools:context="android.usuario.testesocket.MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Conecta"
        android:id="@+id/button"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

Main class

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button conectar = (Button) findViewById(R.id.button);

        if (conectar != null) {
            conectar.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {

                    new Thread(new ClienteThread()).start();
                }
            });
        }
    }
}

Thread Class

import java.io.IOException;
import java.net.Socket;

/**
 * Created by Jefferson on 27/05/2016.
 */
public class ClienteThread implements Runnable {
    @Override
    public void run() {
        try {
            Socket socket = new Socket("192.168.0.104", 5000);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

The application is very simple, I would just like to see that the server received the connection from the android client.

Thanks to anyone who can help.