Windows Phone 7.5 アプリケーションを開発しようとしており、ポート 8001 で UDP ブロードキャスト メッセージをリッスンするリスナー ソケットを作成したいと考えています。
「方法: Windows Phone 用の UDP ソケット クライアント アプリケーションを作成して使用する」の例を変更しましたが、「無効な引数例外」が発生していましたが、そのエラーを修正しました。
これは私のコードです:
public String SecureRecive(int portNumber, bool isBroadcast)
{
SocketAsyncEventArgs socketEventArg;
Send("melnibone", portNumber, " ", isBroadcast, out socketEventArg);
Thread.Sleep(1000);
if (!isHasSent) ;
return Receive(portNumber, isBroadcast, socketEventArg);
}
private string Send(string serverName, int portNumber, string data, bool isBroadcast, out SocketAsyncEventArgs socketEventArg)
{
string response = "Operation Timeout";
// We are re-using the _socket object that was initialized in the Connect method
if (_socket != null)
{
socketEventArg = new SocketAsyncEventArgs();
// Set properties on context object
if (isBroadcast)
socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Broadcast, portNumber);
else
socketEventArg.RemoteEndPoint = new DnsEndPoint(serverName, portNumber);
// Inline event handler for the Completed event.
// Note: This event handler was implemented inline in order to make this method self-contained.
socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)
{
response = e.SocketError.ToString();
// Unblock the UI thread
_clientDone.Set();
isHasSent = true;
});
// Add the data to be sent into the buffer
byte[] payload = Encoding.UTF8.GetBytes(data);
socketEventArg.SetBuffer(payload, 0, payload.Length);
// Sets the state of the event to nonsignaled, causing threads to block
_clientDone.Reset();
// Make an asynchronous Send request over the socket
_socket.SendToAsync(socketEventArg);
// Block the UI thread for a maximum of TIMEOUT_MILLISECONDS milliseconds.
// If no response comes back within this time then proceed
//_clientDone.WaitOne(TIMEOUT_MILLISECONDS);
}
else
{
socketEventArg = null;
response = "Socket is not initialized";
}
return response;
}
/// <summary>
/// Receive data from the server
/// </summary>
/// <param name="portNumber">The port on which to receive data</param>
/// <returns>The data received from the server</returns>
private string Receive(int portNumber, bool isBroadcast, SocketAsyncEventArgs socketEventArg)
{
string response = "Operation Timeout";
// We are receiving over an established socket connection
if (_socket != null)
{
if (isBroadcast)
socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Broadcast, portNumber);
else
socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Any, portNumber);
// Setup the buffer to receive the data
socketEventArg.SetBuffer(new Byte[MAX_BUFFER_SIZE], 0, MAX_BUFFER_SIZE);
// Inline event handler for the Completed event.
// Note: This even handler was implemented inline in order to make this method self-contained.
socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
// Retrieve the data from the buffer
response = Encoding.UTF8.GetString(e.Buffer, e.Offset, e.BytesTransferred);
response = response.Trim('\0');
}
else
{
response = e.SocketError.ToString();
}
_clientDone.Set();
});
// Sets the state of the event to nonsignaled, causing threads to block
_clientDone.Reset();
// Make an asynchronous Receive request over the socket
_socket.ReceiveFromAsync(socketEventArg);
// Block the UI thread for a maximum of TIMEOUT_MILLISECONDS milliseconds.
// If no response comes back within this time then proceed
//_clientDone.WaitOne(TIMEOUT_MILLISECONDS);
}
else
{
response = "Socket is not initialized";
}
return response;
}
しかし、ソケットのタイムアウトを無限に設定する方法がわかりません。
Windows Phone でこの種のソケットを作成することは可能ですか?