Develop Reference

cant decode a message from a Websocket

I`m trying to connect my HTML/JS client to my C# server as a part of a university project in order to allow the user real-time notification. (I just need the server to be able to send a specific user a message at any given time)
My server Is just a mock in order to implement it in my project.
I Successfully passed the handshake stage and I am trying to send a plain string from the server to the client. I read something about Encoding the message is a way that the client will not give the "One or more reserved bits are on: reserved1 = 0, reserved2 = 1, reserved3 = 1" error but without success.
How can I send primitive data through the Sockets and decode them on the client?
My server code:
while (true)
{
TcpListener sck = new TcpListener(IPAddress.Any, 7878);
sck.Start(1000);
TcpClient client = sck.AcceptTcpClient();
NetworkStream _stream = client.GetStream();
StreamReader clientStreamReader = new StreamReader(_stream);
StreamWriter clientStreamWriter = new StreamWriter(_stream);
while (true)
{
while (!_stream.DataAvailable) ;
Byte[] bytes = new Byte[client.Available];
_stream.Read(bytes, 0, bytes.Count());
String data = Encoding.UTF8.GetString(bytes);
if (Regex.IsMatch(data, "^GET"))
{
const string eol = "\r\n"; // HTTP/1.1 defines the sequence CR LF as the end-of-line marker
Byte[] response = Encoding.UTF8.GetBytes("HTTP/1.1 101 Switching Protocols" + eol
+ "Connection: Upgrade" + eol
+ "Upgrade: websocket" + eol
+ "Sec-WebSocket-Accept: " + Convert.ToBase64String(
System.Security.Cryptography.SHA1.Create().ComputeHash(
Encoding.UTF8.GetBytes(
new System.Text.RegularExpressions.Regex("Sec-WebSocket-Key: (.*)").Match(data).Groups[1].Value.Trim() + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
)
)
) + eol
+ eol);
_stream.Write(response, 0, response.Length);
}
else
{
}
}
}
My Client Code:
<script type="text/javascript">
function WebSocketTest() {
if ("WebSocket" in window) {
alert("WebSocket is supported by your Browser!");
// Let us open a web socket
var ws = new WebSocket("ws://localhost:7878");
ws.onopen = function () {
// Web Socket is connected, send data using send()
ws.send("Message to send");
alert("Message is sent...");
};
ws.onmessage = function (evt) {
var received_msg = evt.data;
alert("Message is received...");
};
ws.onclose = function () {
// websocket is closed.
alert("Connection is closed...");
};
} else {
// The browser doesn't support WebSocket
alert("WebSocket NOT supported by your Browser!");
}
}
</script>

I kept my server as above but added a send string function, and a decode message function:
public static string DecodeMessage(Byte[] bytes)
{
string incomingData = string.Empty;
byte secondByte = bytes[1];
int dataLength = secondByte & 127;
int indexFirstMask = 2;
if (dataLength == 126)
indexFirstMask = 4;
else if (dataLength == 127)
indexFirstMask = 10;
IEnumerable<byte> keys = bytes.Skip(indexFirstMask).Take(4);
int indexFirstDataByte = indexFirstMask + 4;
byte[] decoded = new byte[bytes.Length - indexFirstDataByte];
for (int i = indexFirstDataByte, j = 0; i < bytes.Length; i++, j++)
{
decoded[j] = (byte)(bytes[i] ^ keys.ElementAt(j % 4));
}
return Encoding.UTF8.GetString(decoded, 0, decoded.Length);
}
public static void SendString(string userName ,string str)
{
if (!userConnections.ContainsKey(userName))
return;
TcpClient client = userConnections[userName];
NetworkStream _stream = client.GetStream();
try
{
var buf = Encoding.UTF8.GetBytes(str);
int frameSize = 64;
var parts = buf.Select((b, i) => new { b, i })
.GroupBy(x => x.i / (frameSize - 1))
.Select(x => x.Select(y => y.b).ToArray())
.ToList();
for (int i = 0; i < parts.Count; i++)
{
byte cmd = 0;
if (i == 0) cmd |= 1;
if (i == parts.Count - 1) cmd |= 0x80;
_stream.WriteByte(cmd);
_stream.WriteByte((byte)parts[i].Length);
_stream.Write(parts[i], 0, parts[i].Length);
}
_stream.Flush();
}
catch (Exception ex)
{
Console.WriteLine("Error");
}
}
Where userConnections is: public static Dictionary userConnections = new Dictionary();
in order to maintain user - connection relation

You can use SuperWebSocket, this library sends the handshake automatically.
Server:
using SuperSocket.SocketBase;
using SuperWebSocket;
using System;
using System.Net;
using System.Net.Sockets;
namespace Jees.Library.WebSocket
{
public class WebSocket
{
WebSocketServer appServer;
public event EventHandler ServerStarted;
public event EventHandler ServerStopped;
public event EventHandler MessageReceived;
public string IP { get; } = string.Empty;
public int Port { get; } = 1337; //change this to the port you want to use
public WebSocket() => this.IP = GetLocalIPAddress(); //or set it manually
public void Start()
{
appServer = new WebSocketServer();
if (!appServer.Setup(this.IP, this.Port))
{
this.OnServerStarted(new WebSocketServerEventArgs(false));
return;
}
/* start listening */
appServer.NewMessageReceived += new SessionHandler<WebSocketSession, string>(AppServer_NewMessageReceived);
if (appServer.Start())
this.OnServerStarted(new WebSocketServerEventArgs(true));
else
{
this.OnServerStarted(new WebSocketServerEventArgs(false));
appServer = null;
appServer.Dispose();
}
}
public void Stop()
{
if (appServer != null)
{
appServer.Stop();
this.OnServerStopped(new EventArgs());
appServer = null;
appServer.Dispose();
}
}
private void AppServer_NewMessageReceived(WebSocketSession session, string message)
{
this.OnMessageReceived(new MessageReceivedEventArgs(message, session));
}
protected virtual void OnMessageReceived(EventArgs e) => this.MessageReceived?.Invoke(this, e);
protected virtual void OnServerStarted(EventArgs e) => this.ServerStarted?.Invoke(this, e);
protected virtual void OnServerStopped(EventArgs e) => this.ServerStopped?.Invoke(this, e);
private string GetLocalIPAddress()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
if (ip.AddressFamily == AddressFamily.InterNetwork)
return ip.ToString();
throw new Exception("No network adapters with an IPv4 address in the system!");
}
}
public class WebSocketServerEventArgs : EventArgs
{
public WebSocketServerEventArgs(bool success) => this.Success = success;
public bool Success { get; }
}
public class MessageReceivedEventArgs : EventArgs
{
public MessageReceivedEventArgs(string message, WebSocketSession session)
{
this.Message = message;
this.Session = session;
}
public string Message { get; }
public WebSocketSession Session { get; }
}
}
Server Setup (I use a UserControl):
using DevExpress.XtraEditors;
using SuperWebSocket;
using System;
using System.Linq;
using System.Windows.Forms;
namespace WebSocketServer
{
public partial class Server : UserControl
{
WebSocket server;
WebSocketSession session;
public Server()
{
InitializeComponent();
server = new WebSocket();
server.ServerStarted += Server_ServerStarted;
server.ServerStopped += Server_ServerStopped;
server.MessageReceived += Server_MessageReceived;
}
private void Server_MessageReceived(object sender, EventArgs e)
{
MessageReceivedEventArgs eventArgs = (MessageReceivedEventArgs)e;
/* save session */
this.session = eventArgs.Session;
this.Log("SessionID: " + session.RemoteEndPoint.ToString() + "; Message: " + eventArgs.Message);
/* send back the message to the client */
this.session.Send(eventArgs.Message); //comment out if needed
}
private void Server_ServerStopped(object sender, EventArgs e)
{
this.Log("Server stopped!");
}
private void Server_ServerStarted(object sender, EventArgs e)
{
if ((e as WebSocketServerEventArgs).Success)
{
this.Log("Server started on ws://" + server.IP + ":" + server.Port + "/");
}
else
this.Log("Can't start the server!");
}
private void Log(string message)
{
/* here, this.log is a TextBox */
if (this.log.InvokeRequired)
this.log.Invoke((MethodInvoker)delegate
{
this.log.Text += DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss") + " > " + message + Environment.NewLine;
});
else
{
this.log.Text += DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss") + " > " + message + Environment.NewLine;
}
}
/* a button to start the server */
private void BtnStart_Click(object sender, EventArgs e) => server.Start();
/* a button to stop the server */
private void BtnStop_Click(object sender, EventArgs e) => server.Stop();
/* a button to send a message from a TextBox to the client */
private void BtnSend_Click(object sender, EventArgs e)
{
if (this.txtMessage.Text != string.Empty)
this.SendMessage(this.txtMessage.Text);
}
private void SendMessage(string message)
{
try
{
/* use current session to send the message */
this.session.Send(message);
this.Log("Message: " + message + " sent to client!");
}
catch (Exception e)
{
this.Log(e.Message);
}
}
}
}
If you need more clarification, add a comment and I'll update my answer!

Java Server, html client, unable to send messages to server

i got a little problem with my project. I have a Server written in Java and some clients written in html/js. Connecting works somehow, but as soon as i want to send a message from the client to the server it returns an error: "Uncaught InvalidStateError: Failed to execute 'send' on 'WebSocket': Still in CONNECTING state"
Hopefully some of you awesome guys can look over my code and help me :)
Server Code:
Server.java
public class Server {
static ArrayList<Clients> clientsArrayList = new ArrayList<>();
private static int clientCount = 1;
private static int port;
private static ServerSocket ss;
private Socket socket;
private Clients clienthandler;
static boolean isRunning = true;
public Server(int port) throws IOException {
this.port = port;
setSs(new ServerSocket(port));
}
public void run() throws IOException {
while (isRunning) {
log("Listening on " + port + "...");
socket = getSs().accept();
log("Receiving client... " + socket);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream());
String s;
while ((s = in.readLine()) != null) {
log(s);
if (s.isEmpty()) {
break;
}
}
log("Creating a new handler for this client...");
clienthandler = new Clients(socket, "Client " + clientCount, in, out);
Thread t = new Thread(clienthandler);
clientsArrayList.add(clienthandler);
log("Added to client list");
t.start();
clientCount++;
GUI.texttoclientlog();
}
}
public static ServerSocket getSs() {
return ss;
}
public static void setSs(ServerSocket ss) {
Server.ss = ss;
}
public void log(String logtext) {
System.out.println(logtext);
GUI.texttolog(logtext);
}
}
Clients.java
public class Clients implements Runnable {
private String name;
final BufferedReader in;
final PrintWriter out;
Socket socket;
boolean isloggedin;
public Clients(Socket socket, String name, BufferedReader in, PrintWriter out) {
this.out = out;
this.in = in;
this.name = name;
this.socket = socket;
this.isloggedin = true;
}
#Override
public void run() {
String received;
while (true) {
try {
// receive the string
received = in.readLine();
System.out.println(received);
GUI.messagehandler(this.getName() + ": " + received);
if (received.equals("logout")) {
this.isloggedin = false;
this.socket.close();
break;
}
this.in.close();
this.out.close();
this.out.flush();
this.out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public String getName() {
return name;
}
}
And the JS client code:
<script>
var connection;
connection = new WebSocket("ws://localhost:6788/");
console.log("connection established");
connection.onmessage = function (e) { console.log(e.data); };
connection.onopen = () => conn.send("Connection established");
connection.onerror = function (error) {
console.log("WebSocket Error" + error);
};
function Send() {
if (connection.readyState === 1) {
connection.send("test");
}
console.log("error sending");
}
</script>

The WebSocket session is established via a handshake.
Post the handshake is complete and the connection is upgraded, the server and client can send messages. Here is a sample WebSocket server in Java.
Update the clients run method to
public void run() {
int len = 0;
byte[] b = new byte[80];
while(true){
try {
len = in.read(b);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(len!=-1){
byte rLength = 0;
int rMaskIndex = 2;
int rDataStart = 0;
//b[0] is always text in my case so no need to check;
byte data = b[1];
byte op = (byte) 127;
rLength = (byte) (data & op);
if(rLength==(byte)126) rMaskIndex=4;
if(rLength==(byte)127) rMaskIndex=10;
byte[] masks = new byte[4];
int j=0;
int i=0;
for(i=rMaskIndex;i<(rMaskIndex+4);i++){
masks[j] = b[i];
j++;
}
rDataStart = rMaskIndex + 4;
int messLen = len - rDataStart;
byte[] message = new byte[messLen];
for(i=rDataStart, j=0; i<len; i++, j++){
message[j] = (byte) (b[i] ^ masks[j % 4]);
}
System.out.println(new String(message));
b = new byte[80];
}
}
}
based on this SO answer
In my opinion you can leverage the Spring WebSocket support, rather than writing your own. I had created one which also uses ProtoBuf or you can look at the Spring WebSocket getting started guide here

Thats the updated code. it receives the bytes from the html clients. but i have no clue how to decode them :)
Server.java
public class Server {
static ArrayList<Clients> clientsArrayList = new ArrayList<>();
private static int clientCount = 1;
private static int port;
private static ServerSocket ss;
private Socket socket;
private Clients clienthandler;
static boolean isRunning = true;
private InputStream in;
private OutputStream out;
public Server(int port) throws IOException {
Server.port = port;
setSs(new ServerSocket(port));
}
public void run() throws IOException, NoSuchAlgorithmException {
while (isRunning) {
log("Listening on " + port + "...");
socket = getSs().accept();
log("Receiving client... " + socket);
in = socket.getInputStream();
out = socket.getOutputStream();
#SuppressWarnings("resource")
String data = new Scanner(in, "UTF-8").useDelimiter("\\r\\n\\r\\n").next();
Matcher get = Pattern.compile("^GET").matcher(data);
if (get.find()) {
Matcher match = Pattern.compile("Sec-WebSocket-Key: (.*)").matcher(data);
match.find();
byte[] response = ("HTTP/1.1 101 Switching Protocols\r\n" + "Connection: Upgrade\r\n"
+ "Upgrade: websocket\r\n" + "Sec-WebSocket-Accept: "
+ DatatypeConverter.printBase64Binary(MessageDigest.getInstance("SHA-1")
.digest((match.group(1) + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11").getBytes("UTF-8")))
+ "\r\n\r\n").getBytes("UTF-8");
out.write(response, 0, response.length);
log("Creating a new handler for this client...");
clienthandler = new Clients(socket, "Client " + clientCount, in, out);
Thread t = new Thread(clienthandler);
clientsArrayList.add(clienthandler);
log("Added to client list");
t.start();
clientCount++;
GUI.texttoclientlog();
} else {
log("Handshake failed");
}
}
}
public static ServerSocket getSs() {
return ss;
}
public static void setSs(ServerSocket ss) {
Server.ss = ss;
}
public void log(String logtext) {
System.out.println(logtext);
GUI.texttolog(logtext);
}
}
Clients.java
public class Clients implements Runnable {
private String name;
final InputStream in;
final OutputStream out;
Socket socket;
boolean isloggedin;
public Clients(Socket socket, String name, InputStream in, OutputStream out) {
this.out = out;
this.in = in;
this.name = name;
this.socket = socket;
this.isloggedin = true;
}
#Override
public void run() {
int received;
while (true) {
try {
received = in.read();
//how to decode??
System.out.println(received);
GUI.messagehandler(this.getName() + ": " + received);
} catch (IOException e) {
e.printStackTrace();
}
}
}
public String getName() {
return name;
}
}

Intercept action form with method post webview android

I wanna intercept all of http request for adding header to my request and build response. I used all algorithm and libraries ( okHttp, HttpUrlConnection) but no hope :(
public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
String urlString = request.getUrl().toString();
if (Build.VERSION.SDK_INT >= 21) {
try {
URL url = new URL(urlString);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty(Constants.KEY_HEADER, Constants.VALUE_KEY_HEADER);
if (request.getMethod().equals("POST")) {
urlConnection = getPostData(urlConnection, request);
}
InputStream in;
int statusCode = urlConnection.getResponseCode();
if (statusCode == 400 || statusCode == 401 || statusCode == 404) {
in = urlConnection.getErrorStream();
} else {
in = urlConnection.getInputStream();
}
String typeMime = urlConnection.getHeaderField("Content-Type");
if (typeMime == null){
typeMime = "text/html";
}
if (urlString.equals("fontawesome-webfont.woff")) {
typeMime = "application/font-woff";
}
if (typeMime.contains("text/html")) {
typeMime = "text/html";
} else if (typeMime == null || typeMime.contains("application/font-woff")) {
typeMime = "application/font-woff";
}
return new WebResourceResponse(typeMime, "utf-8", in);
} catch (IOException ioe) {
Log.d(Constants.LOG_TAG, "IOException : " + ioe.getMessage());
return null;
}
} else {
return null;
}
private HttpURLConnection getPostData(HttpURLConnection urlConnection, WebResourceRequest request) throws IOException {
urlConnection.setReadTimeout(10000);
urlConnection.setConnectTimeout(15000);
urlConnection.setRequestMethod("POST");
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
for (String key : request.getRequestHeaders().keySet()) {
String valueKey = request.getRequestHeaders().get(key);
Log.d("key is = ", "" + key + " and value = " + valueKey);
urlConnection.setRequestProperty(key, valueKey);
}
urlConnection.setRequestProperty(URLCache.KEY_X_CSRF_Token, URLCache.VALUE_X_CSRF_Token);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("signin[username]", "dfgdfg"));
params.add(new BasicNameValuePair("signin[password]", "dfgdfg"));
OutputStream os = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "utf-8"));
writer.write(getQuery(params));
writer.flush();
writer.close();
os.close();
urlConnection.connect();
return urlConnection;
}
For "GET" Method its work fine but not method "POST" in forum action

ImageView is not being set with Image captured through Camera

I have used a CircleImageView using the 'de.hdodenhof:circleimageview:2.0.0' library.
code:
#Override
public boolean onMenuItemClick(MenuItem item){
switch(item.getItemId()){
case R.id.slot1:
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (cameraIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
ex.printStackTrace();
}
// Continue only if the File was successfully created
if (photoFile != null) {
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
startActivityForResult(cameraIntent, CAMERA_IMAGE_REQUEST);
}
}
return true;
case R.id.slot2:
Intent i = new Intent();
i.setType("image/*");
i.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(i, "Select Picture"), PICK_IMAGE_REQUEST);
return true;
default:
return true;
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "Widget_profile_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, // prefix
".jpg", // suffix
storageDir // directory
);
// Save a file: path for use with ACTION_VIEW intents
photoPath = "file:" + image.getAbsolutePath();
return image;
}
and in the onActivityResult() method:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Bitmap photo = BitmapFactory.decodeFile(photoPath);
profile = (ImageView)findViewById(R.id.profile_image);
profile.setImageBitmap(photo);
} else if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
profile = (ImageView) findViewById(R.id.profile_image);
profile.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
i have created a menu option to select between Gallery and Camera where the Gallery seems to work perfectly, but Camera option doesn't set any image.
public void setImage(View view){
PopupMenu popupMenu = new PopupMenu(MainActivity.this, view);
popupMenu.setOnMenuItemClickListener(this);
popupMenu.getMenu().add(1, R.id.slot1, 1, "Camera");
popupMenu.getMenu().add(1,R.id.slot2,2,"Gallery");
popupMenu.show();
}
Could someone please help me with this?

Changing the program

uploading imageI am trying to make a program using http to upload a picture directly to the server from glass but i am not able to do it the code I have can only upload one picture that is already there but not the picture i have taken in the glass can someone please verify the code and tell me how to change it in such a way that i can upload the pictures i have taken directly
logcat:
06-10 15:07:43.813: D/GCM(718): GcmService start Intent { act=com.google.android.checkin.CHECKIN_COMPLETE flg=0x10 cmp=com.google.android.gms/.gcm.GcmService (has extras) } com.google.android.checkin.CHECKIN_COMPLETE
06-10 15:07:43.844: I/GlassUserEventService[42357a28](1071): Performance stats: [object: com.google.common.logging.GlassExtensionsNano$GlassUserEventPerformanceStats { batteryChargeWhenFullUah_: 604000 totalKernelMs_: 8848030 totalBytesSent_: 1218965 bitField0_: 16383 boardTemperatureMilliCentigrade_: 40970 frequencyScalingGovernor_: 0 availableMemoryKb_: 989140 isLowMemory_: false networkType_: 1 qpassedFractional_: 46921 qpassedInteger_: 17182 reportedSoc_: 99 batteryTemperatureMilliCentigrade_: 26800 batteryStateOfChargeUah_: 595000 totalMemoryKb_: 1475504 unknownFieldData: null cachedSize: -1}]
06-10 15:07:53.836: I/NativeAppVoiceMenuHelper(865): Installed packages changed; invalidating trigger cache
06-10 15:07:53.836: V/FormattingLoggers(865): TimingData [count=780, sinceCreation=14174171ms, spentLogging=272ms].
06-10 15:07:53.836: W/Searchables(498): No global search activity found
06-10 15:07:53.852: I/InputReader(498): Reconfiguring input devices. changes=0x00000010
06-10 15:07:53.860: V/GmsNetworkLocationProvi(1181): DISABLE
06-10 15:07:53.860: D/PackageBroadcastService(816): Received broadcast action=android.intent.action.PACKAGE_CHANGED and uri=com.google.android.gms
06-10 15:07:53.906: E/GCoreFlp(1181): Bound FusedProviderService with LocationManager
06-10 15:07:53.906: V/GmsNetworkLocationProvi(1181): ENABLE
06-10 15:07:53.914: V/GmsNetworkLocationProvi(1181): onSetRequest: ProviderRequestUnbundled, reportLocation is true and interval is 86400000
06-10 15:07:53.914: V/GmsNetworkLocationProvi(1181): SET-REQUEST
06-10 15:07:53.914: V/GmsNetworkLocationProvi(1181): in Handler: ProviderRequestUnbundled, reportLocation is true and interval is 86400000
06-10 15:07:56.149: W/BluetoothAdapter(773): getBluetoothService() called with no BluetoothManagerCallback
06-10 15:07:56.149: D/BluetoothSocket(773): connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[97]}
package com.morkout.nbsocial;
import java.io.BufferedInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.TextView;
public class HTTPRequestActivity extends Activity {
public final static String TAG = "HTTPRequestActivity";
TextView mTvInfo;
String mWhat;
HttpURLConnection mUrlConnection;
String mResult;
protected void onResume () {
super.onResume();
}
protected void onPause () {
super.onPause();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mTvInfo = (TextView) findViewById(R.id.info);
Intent intent = getIntent();
mWhat = intent.getStringExtra("WHAT");
Log.i(TAG, "WHAT="+mWhat);
mTvInfo.setText("Making HTTP "+ mWhat + " request...");
new HTTPRequest().execute();
}
// Async task class to make HTTP Get, Post and upload
private class HTTPRequest extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... arg0) {
try {
if (mWhat.equalsIgnoreCase("GET")) {
Log.w(TAG, "GET");
// get json via YouTube API
URL url = new URL("http://Google.com");
mUrlConnection = (HttpURLConnection) url.openConnection();
InputStream in = new BufferedInputStream(mUrlConnection.getInputStream());
int ch;
StringBuffer b = new StringBuffer();
while ((ch = in.read()) != -1) {
b.append((char) ch);
}
mResult = new String(b);
in.close();
}
else if (mWhat.equalsIgnoreCase("POST")) {
URL url = new URL("http://morkout.com/glass/posttest.php");
mUrlConnection = (HttpURLConnection) url.openConnection();
mUrlConnection.setRequestMethod("POST");
String urlParameters = "email=kandyala.komal-chowdary#stud.th-deg.de&name=komal chowdary&pwd=1234567&vcode=2014";
OutputStreamWriter writer = new OutputStreamWriter(mUrlConnection.getOutputStream());
writer.write(urlParameters);
writer.flush();
InputStream in = new BufferedInputStream(mUrlConnection.getInputStream());
int ch;
StringBuffer b = new StringBuffer();
while ((ch = in.read()) != -1) {
b.append((char) ch);
}
mResult = new String(b);
in.close();
writer.close();
}
else if (mWhat.equalsIgnoreCase("UPLOAD")) {
int serverResponseCode = 0;
File sourceFile = new File(copyAsset("marchmadness.png"));
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File not exist :" +sourceFile.getAbsolutePath());
}
else
{
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL("http://www.morkout.com/glass/upload.php");
mUrlConnection = (HttpURLConnection) url.openConnection();
mUrlConnection.setRequestMethod("POST");
mUrlConnection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
mUrlConnection.setRequestProperty("Filedata", sourceFile.getName());
dos = new DataOutputStream(mUrlConnection.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=Filedata;filename="+ sourceFile.getName() + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = mUrlConnection.getResponseCode();
String serverResponseMessage = mUrlConnection.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200) {
Log.v(TAG, "File Upload Completed.");
InputStream is = mUrlConnection.getInputStream();
int ch;
StringBuffer b = new StringBuffer();
while ((ch = is.read()) != -1) {
b.append((char) ch);
}
final String uploadedFilename = b.toString();
Log.v(TAG, "uploaded file at http://www.morkout.com/glass/uploads/" + uploadedFilename);
mResult = "uploaded file at http://www.morkout.com/glass/uploads/" + uploadedFilename;
is.close();
}
fileInputStream.close();
dos.close();
}
}
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
finally {
if (mUrlConnection != null)
mUrlConnection.disconnect();
}
return null;
}
String copyAsset(String filename) {
final String PATH = Environment.getExternalStorageDirectory().toString() + "/nbsocial/";
File dir = new File(PATH);
if (!dir.exists()) {
if (!dir.mkdirs()) {
Log.v(TAG, "ERROR: Creation of directory " + PATH + " on sdcard failed");
return null;
} else {
Log.v(TAG, "Created directory " + PATH + " on sdcard");
}
}
if (!(new File( PATH + filename).exists())) {
Log.v(TAG, "copying file " + filename);
try {
AssetManager assetManager = getAssets();
InputStream in = assetManager.open(filename);
OutputStream out = new FileOutputStream(PATH + filename);
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
} catch (IOException e) {
Log.e(TAG, "Was unable to copy " + filename + e.toString());
return null;
}
}
return PATH + filename;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Log.w(TAG, "onPostExecute");
mTvInfo.setText(mResult);
}
}
}