public void Parse_Returns_Expected_Data(string username, int token, byte freeUploadSlots, int uploadSpeed, long queueLength)
{
var msg = new MessageBuilder()
.Code(MessageCode.PeerSearchResponse)
.WriteString(username)
.WriteInteger(token)
.WriteInteger(1) // file count
.WriteByte(0x2) // code
.WriteString("filename") // filename
.WriteLong(3) // size
.WriteString("ext") // extension
.WriteInteger(1) // attribute count
.WriteInteger((int)FileAttributeType.BitDepth) // attribute[0].type
.WriteInteger(4) // attribute[0].value
.WriteByte(freeUploadSlots)
.WriteInteger(uploadSpeed)
.WriteLong(queueLength)
.WriteBytes(new byte[4]) // unknown 4 bytes
.Compress()
.Build();
var r = SearchResponseSlim.Parse(msg);
Assert.Equal(username, r.Username);
Assert.Equal(token, r.Token);
Assert.Equal(1, r.FileCount);
Assert.Equal(freeUploadSlots, r.FreeUploadSlots);
Assert.Equal(uploadSpeed, r.UploadSpeed);
Assert.Equal(queueLength, r.QueueLength);
// assure the messagereader has been rewound to the start of the file list
// position is equal to 4 byte username length + username + 4 byte token + 4 byte file count
Assert.Equal(4 + username.Length + 4 + 4, r.MessageReader.Position);
}
public void Parse_Throws_MessageException_On_Code_Mismatch()
{
var msg = new MessageBuilder()
.Code(MessageCode.PeerBrowseRequest)
.Build();
var ex = Record.Exception(() => SearchResponseSlim.Parse(msg));
Assert.NotNull(ex);
Assert.IsType <MessageException>(ex);
}
public void Parse_Throws_MessageReadException_On_Missing_Data()
{
var msg = new MessageBuilder()
.Code(MessageCode.PeerSearchResponse)
.WriteString("foo")
.Compress()
.Build();
var ex = Record.Exception(() => SearchResponseSlim.Parse(msg));
Assert.NotNull(ex);
Assert.IsType <MessageReadException>(ex);
}
public void Parse_Throws_MessageCompressionException_On_Uncompressed_Payload()
{
var msg = new MessageBuilder()
.Code(MessageCode.PeerSearchResponse)
.WriteBytes(new byte[] { 0x0, 0x1, 0x2, 0x3 })
.Build();
var ex = Record.Exception(() => SearchResponseSlim.Parse(msg));
Assert.NotNull(ex);
Assert.IsType <MessageCompressionException>(ex);
Assert.IsType <ZStreamException>(ex.InnerException);
}
public async void HandleMessage(object sender, byte[] message)
{
var connection = (IMessageConnection)sender;
var code = new MessageReader <MessageCode.Peer>(message).ReadCode();
Diagnostic.Debug($"Peer message received: {code} from {connection.Username} ({connection.IPAddress}:{connection.Port})");
try
{
switch (code)
{
case MessageCode.Peer.SearchResponse:
var searchResponse = SearchResponseSlim.Parse(message);
if (SoulseekClient.Searches.TryGetValue(searchResponse.Token, out var search))
{
search.AddResponse(searchResponse);
}
break;
case MessageCode.Peer.BrowseResponse:
var browseWaitKey = new WaitKey(MessageCode.Peer.BrowseResponse, connection.Username);
try
{
SoulseekClient.Waiter.Complete(browseWaitKey, BrowseResponse.Parse(message));
}
catch (Exception ex)
{
SoulseekClient.Waiter.Throw(browseWaitKey, new MessageReadException("The peer returned an invalid browse response.", ex));
throw;
}
break;
case MessageCode.Peer.InfoResponse:
var infoResponse = UserInfoResponse.Parse(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.InfoResponse, connection.Username), infoResponse);
break;
case MessageCode.Peer.TransferResponse:
var transferResponse = TransferResponse.Parse(message);
Console.WriteLine($"Got response from {connection.Username}: {transferResponse.Token}");
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.TransferResponse, connection.Username, transferResponse.Token), transferResponse);
break;
case MessageCode.Peer.QueueDownload:
// the end state here is to wait until there's actually a free slot, then send this request to the peer to
// let them know we are ready to start the actual transfer.
var queueDownloadRequest = QueueDownloadRequest.Parse(message);
var(queueAllowed, queueRejectionMessage) = SoulseekClient.Resolvers.QueueDownloadResponse(connection.Username, connection.IPAddress, connection.Port, queueDownloadRequest.Filename);
if (!queueAllowed)
{
await connection.WriteAsync(new QueueFailedResponse(queueDownloadRequest.Filename, queueRejectionMessage)).ConfigureAwait(false);
}
break;
case MessageCode.Peer.TransferRequest:
var transferRequest = TransferRequest.Parse(message);
if (transferRequest.Direction == TransferDirection.Upload)
{
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.TransferRequest, connection.Username, transferRequest.Filename), transferRequest);
}
else
{
var(transferAllowed, transferRejectionMessage) = SoulseekClient.Resolvers.QueueDownloadResponse(connection.Username, connection.IPAddress, connection.Port, transferRequest.Filename);
if (!transferAllowed)
{
await connection.WriteAsync(new TransferResponse(transferRequest.Token, transferRejectionMessage)).ConfigureAwait(false);
await connection.WriteAsync(new QueueFailedResponse(transferRequest.Filename, transferRejectionMessage)).ConfigureAwait(false);
}
else
{
await connection.WriteAsync(new TransferResponse(transferRequest.Token, "Queued.")).ConfigureAwait(false);
}
}
break;
case MessageCode.Peer.QueueFailed:
var queueFailedResponse = QueueFailedResponse.Parse(message);
SoulseekClient.Waiter.Throw(new WaitKey(MessageCode.Peer.TransferRequest, connection.Username, queueFailedResponse.Filename), new TransferRejectedException(queueFailedResponse.Message));
break;
case MessageCode.Peer.PlaceInQueueResponse:
var placeInQueueResponse = PeerPlaceInQueueResponse.Parse(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.PlaceInQueueResponse, connection.Username, placeInQueueResponse.Filename), placeInQueueResponse);
break;
case MessageCode.Peer.UploadFailed:
var uploadFailedResponse = PeerUploadFailedResponse.Parse(message);
var msg = $"Download of {uploadFailedResponse.Filename} reported as failed by {connection.Username}.";
var download = SoulseekClient.Downloads.Values.FirstOrDefault(d => d.Username == connection.Username && d.Filename == uploadFailedResponse.Filename);
if (download != null)
{
SoulseekClient.Waiter.Throw(new WaitKey(MessageCode.Peer.TransferRequest, download.Username, download.Filename), new TransferException(msg));
SoulseekClient.Waiter.Throw(download.WaitKey, new TransferException(msg));
}
Diagnostic.Debug(msg);
break;
case MessageCode.Peer.BrowseRequest:
var browseResponse = SoulseekClient.Resolvers.BrowseResponse(connection.Username, connection.IPAddress, connection.Port);
await connection.WriteAsync(browseResponse).ConfigureAwait(false);
break;
default:
Diagnostic.Debug($"Unhandled peer message: {code} from {connection.Username} ({connection.IPAddress}:{connection.Port}); {message.Length} bytes");
break;
}
}
catch (Exception ex)
{
Diagnostic.Warning($"Error handling peer message: {code} from {connection.Username} ({connection.IPAddress}:{connection.Port}); {ex.Message}", ex);
}
}
