diff --git a/README.md b/jsfiles/README.md
similarity index 100%
rename from README.md
rename to jsfiles/README.md
diff --git a/jsfiles/device.js b/jsfiles/device.js
new file mode 100644
index 0000000..5ba4208
--- /dev/null
+++ b/jsfiles/device.js
@@ -0,0 +1,59 @@
+/**
+ *  Author: Samir MEDJIAH medjiah@laas.fr
+ *  File : device.js
+ *  Version : 0.1.0
+ */
+
+var express = require('express')
+var app = express()
+var request = require('request');
+
+var argv = require('yargs').argv;
+// --local_ip
+// --local_port
+// --local_name
+// --remote_ip
+// --remote_port
+// --remote_name
+// --send_period 
+
+var LOCAL_ENDPOINT = {IP : argv.local_ip, PORT : argv.local_port, NAME : argv.local_name};
+var REMOTE_ENDPOINT = {IP : argv.remote_ip, PORT : argv.remote_port, NAME : argv.remote_name};
+
+var DATA_PERIOD = argv.send_period;
+
+function doPOST(uri, body, onResponse) {
+    request({method: 'POST', uri: uri, json : body}, onResponse); 
+}
+
+function register() {
+    doPOST(
+        'http://' + REMOTE_ENDPOINT.IP + ':' + REMOTE_ENDPOINT.PORT + '/devices/register', 
+        {
+            Name : LOCAL_ENDPOINT.NAME, 
+            PoC : 'http://' + LOCAL_ENDPOINT.IP + ':' + LOCAL_ENDPOINT.PORT, 
+        },
+        function(error, response, respBody) {
+            console.log(respBody);
+        }
+    );
+}
+
+var dataItem = 0;
+function sendData() {
+    doPOST(
+        'http://' + REMOTE_ENDPOINT.IP + ':' + REMOTE_ENDPOINT.PORT + '/device/'+ LOCAL_ENDPOINT.NAME + '/data', 
+        {
+            Name : LOCAL_ENDPOINT.NAME, 
+            Data : dataItem++,
+            Time : Date.now(),
+        },
+        function(error, response, respBody) {
+            console.log(respBody);
+        }
+    );
+}
+
+register();
+
+setInterval(sendData, DATA_PERIOD);
\ No newline at end of file
diff --git a/jsfiles/gateway.js b/jsfiles/gateway.js
new file mode 100644
index 0000000..e98d984
--- /dev/null
+++ b/jsfiles/gateway.js
@@ -0,0 +1,133 @@
+/**
+ *  Author: Samir MEDJIAH medjiah@laas.fr
+ *  File : gateway.js
+ *  Version : 0.1.0
+ */
+
+var express = require('express')
+var app = express()
+app.use(express.json()) // for parsing application/json
+
+var request = require('request');
+const si = require('systeminformation');
+var argv = require('yargs').argv;
+// --local_ip
+// --local_port
+// --local_name
+// --remote_ip
+// --remote_port
+// --remote_name
+
+var LOCAL_ENDPOINT = {IP : argv.local_ip, PORT : argv.local_port, NAME : argv.local_name};
+var REMOTE_ENDPOINT = {IP : argv.remote_ip, PORT : argv.remote_port, NAME : argv.remote_name};
+
+const E_OK              = 200;
+const E_CREATED         = 201;
+const E_FORBIDDEN       = 403;
+const E_NOT_FOUND       = 404;
+const E_ALREADY_EXIST   = 500;
+
+
+var db = {
+        gateways : new Map()
+    };
+
+function addNewGateway(gw) {
+    var res = -1;
+    if (!db.gateways.get(gw.Name)) {
+        db.gateways.set(gw.Name, gw);
+        res = 0;
+    }
+    return res;
+}
+
+function removeGateway(gw) {
+    if (db.gateways.get(gw.Name))
+        db.gateways.delete(gw.Name);
+}
+    
+
+function doPOST(uri, body, onResponse) {
+    request({method: 'POST', uri: uri, json : body}, onResponse); 
+}
+
+function register() {
+    doPOST(
+        'http://' + REMOTE_ENDPOINT.IP + ':' + REMOTE_ENDPOINT.PORT + '/gateways/register', 
+        {
+            Name : LOCAL_ENDPOINT.NAME, 
+            PoC : 'http://' + LOCAL_ENDPOINT.IP + ':' + LOCAL_ENDPOINT.PORT, 
+        },
+        function(error, response, respBody) {
+            console.log(respBody);
+        }
+    );
+}
+
+
+app.post('/gateways/register', function(req, res) {
+    console.log(req.body);
+    var result = addNewGateway(req.body);
+    if (result === 0)
+        res.sendStatus(E_CREATED);  
+    else
+        res.sendStatus(E_ALREADY_EXIST);  
+ });
+app.post('/devices/register', function(req, res) {
+    console.log(req.body);
+    doPOST(
+        'http://' + REMOTE_ENDPOINT.IP + ':' +REMOTE_ENDPOINT.PORT + '/devices/register',
+        req.body,
+        function(error, response, respBody) {
+            console.log(respBody);
+            res.sendStatus(E_OK); 
+        }
+    )
+ });
+ app.post('/device/:dev/data', function(req, res) {
+    console.log(req.body);
+    var dev = req.params.dev;
+    doPOST(
+        'http://' + REMOTE_ENDPOINT.IP + ':' +REMOTE_ENDPOINT.PORT + '/device/' + dev + '/data',
+        req.body,
+        function(error, response, respBody) {
+            console.log(respBody);
+            res.sendStatus(E_OK); 
+        }
+    )
+});
+app.get('/gateways', function(req, res) {
+    console.log(req.body);
+    let resObj = [];
+    db.gateways.forEach((v,k) => {
+        resObj.push(v);
+    });
+    res.send(resObj);
+});
+app.get('/gateway/:gw', function(req, res) {
+    console.log(req.body);
+    var gw = req.params.gw;
+    var gateway = db.gateways.get(gw);
+    if (gateway)
+        res.status(E_OK).send(JSON.stringify(gateway));
+    else
+        res.sendStatus(E_NOT_FOUND);
+});
+
+app.get('/ping', function(req, res) {
+    console.log(req.body);
+    res.status(E_OK).send({pong: Date.now()});
+});
+app.get('/health', function(req, res) {
+    console.log(req.body);
+    si.currentLoad((d) => {
+        console.log(d);
+        res.status(E_OK).send(JSON.stringify(d));
+    })
+});
+
+
+register();
+app.listen(LOCAL_ENDPOINT.PORT , function () {
+    console.log(LOCAL_ENDPOINT.NAME + ' listening on : ' + LOCAL_ENDPOINT.PORT );
+});
\ No newline at end of file
diff --git a/jsfiles/scripts.txt b/jsfiles/scripts.txt
new file mode 100644
index 0000000..02079a4
--- /dev/null
+++ b/jsfiles/scripts.txt
@@ -0,0 +1,3 @@
+http://homepages.laas.fr/smedjiah/tmp/*.js
+
+with * = server OR gateway OR device
diff --git a/jsfiles/server.js b/jsfiles/server.js
new file mode 100644
index 0000000..3c7be40
--- /dev/null
+++ b/jsfiles/server.js
@@ -0,0 +1,174 @@
+/**
+ *  Author: Samir MEDJIAH medjiah@laas.fr
+ *  File : server.js
+ *  Version : 0.1.0
+ */
+
+
+var express = require('express')
+var app = express()
+app.use(express.json()) 
+
+var argv = require('yargs').argv;
+// --local_ip
+// --local_port
+// --local_name
+const si = require('systeminformation');
+
+var LOCAL_ENDPOINT = {IP : argv.local_ip, PORT : argv.local_port, NAME : argv.local_name};
+
+const E_OK              = 200;
+const E_CREATED         = 201;
+const E_FORBIDDEN       = 403;
+const E_NOT_FOUND       = 404;
+const E_ALREADY_EXIST   = 500;
+
+
+var db = {
+        devices : new Map(),
+        data : new Map(),
+        gateways : new Map()
+    };
+
+function addNewDevice(dev) {
+    var result = -1;
+    if (!db.devices.get(dev.Name)) {
+        db.devices.set(dev.Name, dev);
+
+        if (db.devices.get(dev.Name))
+            db.data.delete(dev.Name);
+        db.data.set(dev.Name, []);
+
+        result = 0;
+    }
+    return result;
+}
+
+function addNewGateway(gw) {
+    var result = -1;
+    if (!db.gateways.get(gw.Name)) {
+        db.gateways.set(gw.Name, gw);
+        result = 0;
+    }
+    return result;
+}
+
+function removeDevice(dev) {
+    if (db.devices.get(dev.Name)) {
+        db.devices.delete(dev.Name);
+        if (db.devices.get(dev.Name))
+            db.data.delete(dev.Name);
+    }
+}
+
+function removeGateway(gw) {
+    if (db.gateways.get(gw.Name))
+        db.gateways.delete(gw.Name);
+}
+
+function addDeviceData(dev, data) {
+    var result = -1;
+    var device = db.devices.get(dev);
+    if (device) {
+        db.data.get(dev).push(data);
+        result = 0;
+    }
+    return result;
+}
+
+
+
+app.get('/devices', function(req, res) {
+    console.log(req.body);
+    let resObj = [];
+    db.devices.forEach((v,k) => {
+        resObj.push(v);
+    });
+    res.status(E_OK).send(resObj);
+});
+app.get('/device/:dev', function(req, res) {
+    console.log(req.body);
+    var dev = req.params.dev;
+    var device = db.devices.get(dev);
+    if (device)
+        res.status(E_OK).send(JSON.stringify(device));
+    else
+        res.sendStatus(E_NOT_FOUND);
+});
+app.post('/device/:dev/data', function(req, res) {
+    console.log(req.body);
+    var dev = req.params.dev;
+    var result = addDeviceData(dev, req.body);
+    if (result === 0)
+        res.sendStatus(E_CREATED);
+    else
+        res.sendStatus(E_NOT_FOUND);
+});
+app.get('/device/:dev/data', function(req, res) {
+    console.log(req.body);
+    var dev = req.params.dev;
+    var device = db.devices.get(dev);
+    if (device){
+        var data = db.data.get(dev);
+        if (data) {
+            let resObj = [];
+            data.forEach((v,k) => {
+                resObj.push(v);
+            });
+            res.status(E_OK).send(JSON.stringify(resObj));
+        }
+        else
+            res.sendStatus(E_NOT_FOUND);
+    }
+    else
+        res.sendStatus(E_NOT_FOUND);
+});
+app.post('/devices/register', function(req, res) {
+    console.log(req.body);
+    var result = addNewDevice(req.body);
+    if ( result === 0)
+        res.sendStatus(E_CREATED);  
+    else
+        res.sendStatus(E_ALREADY_EXIST);  
+});
+app.get('/gateways', function(req, res) {
+    console.log(req.body);
+    let resObj = [];
+    db.gateways.forEach((v,k) => {
+        resObj.push(v);
+    });
+    res.send(resObj);
+});
+app.get('/gateway/:gw', function(req, res) {
+    console.log(req.body);
+    var gw = req.params.gw;
+    var gateway = db.gateways.get(gw);
+    if (gateway)
+        res.status(E_OK).send(JSON.stringify(gateway));
+    else
+        res.sendStatus(E_NOT_FOUND);
+});
+app.post('/gateways/register', function(req, res) {
+    console.log(req.body);
+    var result = addNewGateway(req.body);
+    if ( result === 0)
+        res.sendStatus(E_CREATED);  
+    else
+        res.sendStatus(E_ALREADY_EXIST);  
+});
+
+app.get('/ping', function(req, res) {
+    console.log(req.body);
+    res.status(E_OK).send({pong: Date.now()});
+});
+app.get('/health', function(req, res) {
+    console.log(req.body);
+    si.currentLoad((d) => {
+        console.log(d);
+        res.status(E_OK).send(JSON.stringify(d));
+    })
+});
+
+app.listen(LOCAL_ENDPOINT.PORT , function () {
+    console.log(LOCAL_ENDPOINT.NAME + ' listening on : ' + LOCAL_ENDPOINT.PORT );
+});
\ No newline at end of file