/// <summary>
/// Processes the received message.
/// </summary>
/// <param name="message">The message.</param>
private void ProcessRecievedMessage(HandshakeMessage message)
{
message.CannotBeNull();
if (this.HandshakeState == HandshakeState.None ||
this.HandshakeState == HandshakeState.SentButNotReceived)
{
if (message.InfoHash == this.pieceManager.TorrentInfoHash &&
message.ProtocolString == HandshakeMessage.ProtocolName &&
message.PeerId.IsNotNullOrEmpty() &&
message.PeerId != this.localPeerId)
{
if (this.HandshakeState == HandshakeState.None)
{
this.HandshakeState = HandshakeState.ReceivedButNotSent;
this.PeerId = message.PeerId;
// send a handshake
this.EnqueueSendMessage(new HandshakeMessage(this.pieceManager.TorrentInfoHash, this.localPeerId));
// send a bit field
this.EnqueueSendMessage(new BitFieldMessage(this.pieceManager.BitField.Select(x => x == PieceStatus.Present).ToArray()));
}
else if (this.HandshakeState == HandshakeState.SentButNotReceived)
{
this.HandshakeState = HandshakeState.SendAndReceived;
this.PeerId = message.PeerId;
// send a bit field
this.EnqueueSendMessage(new BitFieldMessage(this.pieceManager.BitField.Select(x => x == PieceStatus.Present).ToArray()));
}
}
else
{
this.OnCommunicationErrorOccurred(this, new PeerCommunicationErrorEventArgs("Invalid handshake message.", true));
}
}
else
{
this.OnCommunicationErrorOccurred(this, new PeerCommunicationErrorEventArgs("Invalid message sequence.", true));
}
}