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132 lines
3.9 KiB
132 lines
3.9 KiB
using System;
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using System.IO;
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#if !PORTABLE || DOTNET
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using System.Net.Sockets;
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#endif
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namespace Org.BouncyCastle.Crypto.Tls
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{
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public class DtlsTransport
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: DatagramTransport
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{
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private readonly DtlsRecordLayer mRecordLayer;
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internal DtlsTransport(DtlsRecordLayer recordLayer)
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{
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this.mRecordLayer = recordLayer;
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}
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public virtual int GetReceiveLimit()
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{
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return mRecordLayer.GetReceiveLimit();
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}
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public virtual int GetSendLimit()
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{
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return mRecordLayer.GetSendLimit();
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}
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public virtual int Receive(byte[] buf, int off, int len, int waitMillis)
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{
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if (null == buf)
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throw new ArgumentNullException("buf");
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if (off < 0 || off >= buf.Length)
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throw new ArgumentException("invalid offset: " + off, "off");
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if (len < 0 || len > buf.Length - off)
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throw new ArgumentException("invalid length: " + len, "len");
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if (waitMillis < 0)
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throw new ArgumentException("cannot be negative", "waitMillis");
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try
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{
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return mRecordLayer.Receive(buf, off, len, waitMillis);
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}
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catch (TlsFatalAlert fatalAlert)
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{
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mRecordLayer.Fail(fatalAlert.AlertDescription);
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throw fatalAlert;
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}
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catch (TlsTimeoutException e)
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{
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throw e;
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}
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#if !PORTABLE || DOTNET
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catch (SocketException e)
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{
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if (TlsUtilities.IsTimeout(e))
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throw e;
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw new TlsFatalAlert(AlertDescription.internal_error, e);
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}
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#endif
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//catch (InterruptedIOException e)
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//{
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// throw e;
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//}
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catch (IOException e)
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{
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw e;
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}
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catch (Exception e)
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{
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw new TlsFatalAlert(AlertDescription.internal_error, e);
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}
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}
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public virtual void Send(byte[] buf, int off, int len)
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{
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if (null == buf)
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throw new ArgumentNullException("buf");
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if (off < 0 || off >= buf.Length)
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throw new ArgumentException("invalid offset: " + off, "off");
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if (len < 0 || len > buf.Length - off)
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throw new ArgumentException("invalid length: " + len, "len");
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try
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{
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mRecordLayer.Send(buf, off, len);
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}
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catch (TlsFatalAlert fatalAlert)
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{
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mRecordLayer.Fail(fatalAlert.AlertDescription);
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throw fatalAlert;
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}
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catch (TlsTimeoutException e)
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{
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throw e;
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}
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#if !PORTABLE || DOTNET
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catch (SocketException e)
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{
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if (TlsUtilities.IsTimeout(e))
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throw e;
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw new TlsFatalAlert(AlertDescription.internal_error, e);
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}
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#endif
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//catch (InterruptedIOException e)
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//{
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// throw e;
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//}
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catch (IOException e)
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{
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw e;
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}
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catch (Exception e)
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{
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mRecordLayer.Fail(AlertDescription.internal_error);
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throw new TlsFatalAlert(AlertDescription.internal_error, e);
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}
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}
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public virtual void Close()
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{
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mRecordLayer.Close();
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}
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}
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}
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