protected override void CloseNative()
{
if (socket != null)
{
socket.Close();
socket = null;
}
}
protected override bool ConnectNative(string ip, int port)
{
if (socket == null)
{
socket = new Java.Net.Socket(ip, port);
}
return(true);
}
protected override void OnHandleIntent(Intent intent)
{
var context = ApplicationContext;
if (intent.Action.Equals(ActionSendFile))
{
var fileUri = intent.GetStringExtra(ExtrasFilePath);
var host = intent.GetStringExtra(ExtrasGroupOwnerAddress);
var port = intent.GetIntExtra(ExtrasGroupOwnerPort, 8988);
var socket = new Socket();
try
{
Log.Debug(WiFiDirectActivity.Tag, "Opening client socket - ");
socket.Bind(null);
socket.Connect(new InetSocketAddress(host, port), SocketTimeout);
Log.Debug(WiFiDirectActivity.Tag, "Client socket - " + socket.IsConnected);
var stream = socket.OutputStream;
var cr = context.ContentResolver;
Stream inputStream = null;
try
{
inputStream = cr.OpenInputStream(Android.Net.Uri.Parse(fileUri));
}
catch (FileNotFoundException e)
{
Log.Debug(WiFiDirectActivity.Tag, e.ToString());
}
DeviceDetailFragment.CopyFile(inputStream, stream);
Log.Debug(WiFiDirectActivity.Tag, "Client: Data written");
}
catch (IOException e)
{
Log.Debug(WiFiDirectActivity.Tag, e.Message);
}
finally
{
if (socket != null)
{
if (socket.IsConnected)
{
try
{
socket.Close();
}
catch (IOException e)
{
// Give up
Log.Debug(WiFiDirectActivity.Tag, "Gave up on closing socket " + e.StackTrace);
}
}
}
}
}
}
public void Connect(int sendTimeout = -1, int receiveTimeout = -1)
{
SSLSocket sslSocket = null;
var f = SSLSocketFactory.Default as SSLSocketFactory;
sslSocket = f.CreateSocket(_remoteHostName, _remotePort) as SSLSocket;
_socket = sslSocket;
_socket.SoTimeout = receiveTimeout == -1 ? 0 : receiveTimeout;
sslSocket.StartHandshake();
_socket.SoTimeout = 0;
}
public void Connect(int sendTimeout = -1, int receiveTimeout = -1)
{
SSLSocket sslSocket = null;
var f = SSLSocketFactory.Default as SSLSocketFactory;
sslSocket = f.CreateSocket(_remoteHostName, _remotePort) as SSLSocket;
_socket = sslSocket;
_socket.SoTimeout = receiveTimeout == -1 ? 0 : receiveTimeout;
sslSocket.StartHandshake();
_socket.SoTimeout = 0;
}
public static bool isOnline()
{
try
{
int timeoutMs = 3000;
Socket sock = new Socket();
Java.Net.SocketAddress sockaddr = new InetSocketAddress("8.8.8.8", 53);
sock.Connect(sockaddr, timeoutMs);
sock.Close();
return(true);
}
catch
{
return(false);
}
}
/// <summary>
/// Tests if a remote host name is reachable
/// </summary>
/// <param name="host">Host name can be a remote IP or URL of website (no http:// or www.)</param>
/// <param name="port">Port to attempt to check is reachable.</param>
/// <param name="msTimeout">Timeout in milliseconds.</param>
/// <returns></returns>
public override async Task<bool> IsRemoteReachable(string host, int port = 80, int msTimeout = 5000)
{
if (string.IsNullOrEmpty(host))
throw new ArgumentNullException("host");
if (!IsConnected)
return false;
host = host.Replace("http://www.", string.Empty).
Replace("http://", string.Empty).
Replace("https://www.", string.Empty).
Replace("https://", string.Empty);
return await Task.Run(async () =>
{
try
{
var sockaddr = new InetSocketAddress(host, port);
using (var sock = new Socket())
{
await sock.ConnectAsync(sockaddr, msTimeout);
return true;
}
}
catch (Exception ex)
{
Debug.WriteLine("Unable to reach: " + host + " Error: " + ex);
return false;
}
});
}
public override Socket CreateSocket(Socket socket, string host, int port, bool autoClose)
{
return sslContext.SocketFactory.CreateSocket(socket, host, port, autoClose);
}
private bool Connect(string serverAddress, int portNumber)
{
try {
Socket s = new Socket(serverAddress, portNumber);
s.KeepAlive = true;
writer = new BufferedWriter(new OutputStreamWriter(s.OutputStream));
reader = new BufferedReader(new InputStreamReader(s.InputStream));
new ReceivingThread(this).Start();
new KeepAliveThread(this).Start();
return true;
} catch(Exception e) {
System.Diagnostics.Debug.WriteLine("Failed to connect to TCP server. Error: " + e.GetBaseException().Message);
return false;
}
}
private void Close()
{
if(mSocket != null) {
writer.Flush();
reader.Reset();
writer.Close();
reader.Close();
mSocket.Close();
mSocket = null;
}
}
public async Task<bool> IsPortReachable(string host, int port = 80, int msTimeout = 5000)
{
return await Task.Run(async () =>
{
var sockaddr = new InetSocketAddress(host, port);
using (var sock = new Socket())
{
try
{
await sock.ConnectAsync(sockaddr, msTimeout);
return true;
}
catch (Exception)
{
return false;
}
}
});
}
public async Task <string> ClientConnect()
{
Java.Net.Socket connection = null;
BufferedReader reader = null;
try
{
// サーバーへ接続
connection = await Task.Run(() => new Java.Net.Socket("pop.mail.yahoo.co.jp", 110));
// メッセージ取得オブジェクトのインスタンス化
reader = new BufferedReader(new InputStreamReader(connection.InputStream));
// サーバーからのメッセージを受信
message = await Task.Run(() => reader.ReadLine());
// 接続確認
if (message == "")
{
//tv.SetText("サーバーとの接続に失敗しました:" + message, TextView.BufferType.Spannable);
//Toast.MakeText(this, "サーバーとの接続に失敗しました。", ToastLength.Long).Show();
return("サーバーとの接続に失敗しました。");
}
else
{
//tv.SetText("サーバーからのメッセージ：" + message, TextView.BufferType.Spannable);
//Toast.MakeText(this, "サーバーとの接続に成功しました。", ToastLength.Long).Show();
return("サーバーとの接続に成功しました。");
//return this.ClientConnect().Result;
}
}
catch (UnknownHostException e)
{
e.PrintStackTrace();
//tv.SetText("エラー内容：" + e.ToString(), TextView.BufferType.Spannable);
//Toast.MakeText(this, "サーバーとの接続に失敗しました。", ToastLength.Long).Show();
}
catch (IOException e)
{
e.PrintStackTrace();
//tv.SetText("エラー内容：" + e.ToString(), TextView.BufferType.Spannable);
//Toast.MakeText(this, "サーバーとの接続に失敗しました。", ToastLength.Short).Show();
}
finally
{
try
{
// 接続終了処理
reader.Close();
connection.Close();
}
catch (IOException e)
{
e.PrintStackTrace();
//tv.SetText("エラー内容：" + e.ToString(), TextView.BufferType.Spannable);
//Toast.MakeText(this, "サーバーとの接続に失敗しました。", ToastLength.Short).Show();
}
}
return("サーバーとの接続に成功しました。");
}
/// <summary>
/// Tests if a remote host name is reachable
/// </summary>
/// <param name="host">Host name can be a remote IP or URL of website (no http:// or www.)</param>
/// <param name="port">Port to attempt to check is reachable.</param>
/// <param name="msTimeout">Timeout in milliseconds.</param>
/// <returns></returns>
public override async Task<bool> IsRemoteReachable(string host, int port = 80, int msTimeout = 5000)
{
if (string.IsNullOrEmpty(host))
throw new ArgumentNullException("host");
if (!IsConnected)
return false;
host = host.Replace("http://www.", string.Empty).
Replace("http://", string.Empty).
Replace("https://www.", string.Empty).
Replace("https://", string.Empty);
return await Task.Run(async () =>
{
try
{
var tcs = new TaskCompletionSource<InetSocketAddress>();
new System.Threading.Thread(async () =>
{
/* this line can take minutes when on wifi with poor or none internet connectivity
and Task.Delay solves it only if this is running on new thread (Task.Run does not help) */
InetSocketAddress result = new InetSocketAddress(host, port);
if (!tcs.Task.IsCompleted)
tcs.TrySetResult(result);
}).Start();
Task.Run(async () =>
{
await Task.Delay(msTimeout);
if (!tcs.Task.IsCompleted)
tcs.TrySetResult(null);
});
var sockaddr = await tcs.Task;
if (sockaddr == null)
return false;
using (var sock = new Socket())
{
await sock.ConnectAsync(sockaddr, msTimeout);
return true;
}
}
catch (Exception ex)
{
Debug.WriteLine("Unable to reach: " + host + " Error: " + ex);
return false;
}
});
}