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// Licensed to the Apache Software Foundation(ASF) under one
// or more contributor license agreements.See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using Thrift.Transports.Client;
namespace Thrift.Transports.Server
{
// ReSharper disable once InconsistentNaming
public class TServerFramedTransport : TServerTransport
{
private readonly int _clientTimeout;
private readonly int _port;
private TcpListener _server;
public TServerFramedTransport(TcpListener listener)
: this(listener, 0)
{
}
public TServerFramedTransport(TcpListener listener, int clientTimeout)
{
_server = listener;
_clientTimeout = clientTimeout;
}
public TServerFramedTransport(int port)
: this(port, 0)
{
}
public TServerFramedTransport(int port, int clientTimeout)
{
_port = port;
_clientTimeout = clientTimeout;
try
{
// Make server socket
_server = new TcpListener(IPAddress.Any, _port);
_server.Server.NoDelay = true;
}
catch (Exception)
{
_server = null;
throw new TTransportException("Could not create ServerSocket on port " + port + ".");
}
}
public override void Listen()
{
// Make sure not to block on accept
if (_server != null)
{
try
{
_server.Start();
}
catch (SocketException sx)
{
throw new TTransportException("Could not accept on listening socket: " + sx.Message);
}
}
}
public override bool IsClientPending()
{
return _server.Pending();
}
protected override async Task<TClientTransport> AcceptImplementationAsync(CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return await Task.FromCanceled<TClientTransport>(cancellationToken);
}
if (_server == null)
{
throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No underlying server socket.");
}
try
{
TFramedClientTransport tSocketTransport = null;
var tcpClient = await _server.AcceptTcpClientAsync();
try
{
tSocketTransport = new TFramedClientTransport(new TSocketClientTransport(tcpClient)
{
Timeout = _clientTimeout
});
return tSocketTransport;
}
catch (Exception)
{
if (tSocketTransport != null)
{
tSocketTransport.Dispose();
}
else // Otherwise, clean it up ourselves.
{
((IDisposable) tcpClient).Dispose();
}
throw;
}
}
catch (Exception ex)
{
throw new TTransportException(ex.ToString());
}
}
public override void Close()
{
if (_server != null)
{
try
{
_server.Stop();
}
catch (Exception ex)
{
throw new TTransportException("WARNING: Could not close server socket: " + ex);
}
_server = null;
}
}
}
}
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