public void Sends_Resolved_FolderContentsResponse(int token, string dirname)
{
var files = new List <File>()
{
new File(1, "1", 1, "1", 1, new List <FileAttribute>()
{
new FileAttribute(FileAttributeType.BitDepth, 1)
}),
new File(2, "2", 2, "2", 1, new List <FileAttribute>()
{
new FileAttribute(FileAttributeType.BitRate, 2)
}),
};
var dir = new Directory(dirname, 2, files);
var response = new FolderContentsResponse(token, dir);
var options = new SoulseekClientOptions(directoryContentsResponseResolver: (u, i, t, d) => Task.FromResult(dir));
var(handler, mocks) = GetFixture(options: options);
var msg = new FolderContentsRequest(token, dirname).ToByteArray();
handler.HandleMessageRead(mocks.PeerConnection.Object, msg);
mocks.PeerConnection.Verify(
m => m.WriteAsync(It.Is <byte[]>(b => Encoding.UTF8.GetString(b) == Encoding.UTF8.GetString(response.ToByteArray())), null), Times.Once);
}
public void Instantiates_With_Given_Data(int token, Directory dir)
{
var a = new FolderContentsResponse(token, dir);
Assert.Equal(token, a.Token);
Assert.Equal(dir, a.Directory);
}
public void Completes_Wait_For_FolderContentsResponse(string username, IPEndPoint endpoint, int token, string dirname)
{
var(handler, mocks) = GetFixture(username, endpoint);
var msg = new FolderContentsResponse(token, new Directory(dirname)).ToByteArray();
handler.HandleMessageRead(mocks.PeerConnection.Object, msg);
mocks.Waiter.Verify(m => m.Complete(new WaitKey(MessageCode.Peer.FolderContentsResponse, username, token), It.IsAny <Directory>()), Times.Once);
}
public void Parse_Throws_MessageException_On_Code_Mismatch()
{
var msg = new MessageBuilder()
.WriteCode(MessageCode.Peer.TransferResponse)
.Build();
var ex = Record.Exception(() => FolderContentsResponse.FromByteArray(msg));
Assert.NotNull(ex);
Assert.IsType <MessageException>(ex);
}
public void Parse_Throws_MessageCompressionException_On_Uncompressed_Payload()
{
var msg = new MessageBuilder()
.WriteCode(MessageCode.Peer.FolderContentsResponse)
.WriteBytes(new byte[] { 0x0, 0x1, 0x2, 0x3 })
.Build();
var ex = Record.Exception(() => FolderContentsResponse.FromByteArray(msg));
Assert.NotNull(ex);
Assert.IsType <MessageCompressionException>(ex);
Assert.IsType <ZStreamException>(ex.InnerException);
}
public void Parse_Handles_A_Complete_Response(int token)
{
var dir = GetRandomDirectory(2);
var builder = new MessageBuilder()
.WriteCode(MessageCode.Peer.FolderContentsResponse)
.WriteInteger(token)
.WriteString(dir.DirectoryName)
.WriteInteger(1);
BuildDirectory(builder, dir);
var msg = builder
.Compress()
.Build();
FolderContentsResponse r = default;
var ex = Record.Exception(() => r = FolderContentsResponse.FromByteArray(msg));
Assert.Null(ex);
var d = r.Directory;
Assert.Equal(dir.DirectoryName, d.DirectoryName);
Assert.Equal(dir.FileCount, d.FileCount);
var files = d.Files.ToList();
var msgFiles = d.Files.ToList();
for (int j = 0; j < d.FileCount; j++)
{
Assert.Equal(files[j].Code, msgFiles[j].Code);
Assert.Equal(files[j].Filename, msgFiles[j].Filename);
Assert.Equal(files[j].Size, msgFiles[j].Size);
Assert.Equal(files[j].Extension, msgFiles[j].Extension);
Assert.Equal(files[j].AttributeCount, msgFiles[j].AttributeCount);
var attr = files[j].Attributes.ToList();
var msgAttr = files[j].Attributes.ToList();
for (int k = 0; k < msgFiles[j].AttributeCount; k++)
{
Assert.Equal(attr[k].Type, msgAttr[k].Type);
Assert.Equal(attr[k].Value, msgAttr[k].Value);
}
}
}
public void Parse_Throws_MessageReadException_On_Missing_Data(int token, string dirname)
{
var msg = new MessageBuilder()
.WriteCode(MessageCode.Peer.FolderContentsResponse)
.WriteInteger(token)
.WriteString(dirname)
.WriteInteger(1)
.WriteString(dirname)
.Compress() // count is missing
.Build();
FolderContentsResponse r = default;
var ex = Record.Exception(() => r = FolderContentsResponse.FromByteArray(msg));
Assert.NotNull(ex);
Assert.IsType <MessageReadException>(ex);
}
public void ToByteArray_Returns_Expected_Data(int token, string dirname)
{
var list = new List <File>()
{
new File(1, "1", 1, ".1", 1, new List <FileAttribute>()
{
new FileAttribute(FileAttributeType.BitDepth, 1)
}),
new File(2, "2", 2, ".2", 1, new List <FileAttribute>()
{
new FileAttribute(FileAttributeType.BitRate, 2)
}),
};
var dir = new Directory(dirname, 2, list);
var r = new FolderContentsResponse(token, dir);
var bytes = r.ToByteArray();
var m = new MessageReader <MessageCode.Peer>(bytes);
m.Decompress();
Assert.Equal(MessageCode.Peer.FolderContentsResponse, m.ReadCode());
Assert.Equal(token, m.ReadInteger());
Assert.Equal(dirname, m.ReadString());
Assert.Equal(1, m.ReadInteger());
Assert.Equal(dirname, m.ReadString());
Assert.Equal(dir.FileCount, m.ReadInteger());
// file 1
Assert.Equal(1, m.ReadByte()); // code
Assert.Equal("1", m.ReadString()); // name
Assert.Equal(1, m.ReadLong()); // length
Assert.Equal(".1", m.ReadString()); // ext
Assert.Equal(1, m.ReadInteger()); // attribute count
Assert.Equal(FileAttributeType.BitDepth, (FileAttributeType)m.ReadInteger());
Assert.Equal(1, m.ReadInteger());
}
public void Parse_Returns_Empty_Response_Given_Empty_Message(int token, string dirname)
{
var msg = new MessageBuilder()
.WriteCode(MessageCode.Peer.FolderContentsResponse)
.WriteInteger(token)
.WriteString(dirname)
.WriteInteger(1)
.WriteString(dirname)
.WriteInteger(0)
.Compress()
.Build();
FolderContentsResponse r = default;
var ex = Record.Exception(() => r = FolderContentsResponse.FromByteArray(msg));
Assert.Null(ex);
Assert.Equal(token, r.Token);
Assert.Equal(dirname, r.Directory.DirectoryName);
Assert.Equal(0, r.Directory.FileCount);
}
public void Parse_Handles_Files_With_No_Attributes(int token, string dirname)
{
var msg = new MessageBuilder()
.WriteCode(MessageCode.Peer.FolderContentsResponse)
.WriteInteger(token)
.WriteString(dirname)
.WriteInteger(1)
.WriteString(dirname)
.WriteInteger(1) // first directory file count
.WriteByte(0x0) // file code
.WriteString("foo") // name
.WriteLong(12) // size
.WriteString("bar") // extension
.WriteInteger(0) // attribute count
.Compress()
.Build();
FolderContentsResponse r = default;
var ex = Record.Exception(() => r = FolderContentsResponse.FromByteArray(msg));
Assert.Null(ex);
Assert.Equal(dirname, r.Directory.DirectoryName);
Assert.Equal(1, r.Directory.FileCount);
Assert.Single(r.Directory.Files);
var f = r.Directory.Files.ToList();
Assert.Equal(0x0, f[0].Code);
Assert.Equal("foo", f[0].Filename);
Assert.Equal(12, f[0].Size);
Assert.Equal("bar", f[0].Extension);
Assert.Equal(0, f[0].AttributeCount);
Assert.Empty(f[0].Attributes);
}
/// <summary>
/// Handles incoming messages.
/// </summary>
/// <param name="sender">The <see cref="IMessageConnection"/> instance from which the message originated.</param>
/// <param name="message">The message.</param>
public async void HandleMessageRead(object sender, byte[] message)
{
var connection = (IMessageConnection)sender;
var code = new MessageReader <MessageCode.Peer>(message).ReadCode();
Diagnostic.Debug($"Peer message received: {code} from {connection.Username} ({connection.IPEndPoint}) (id: {connection.Id})");
try
{
switch (code)
{
case MessageCode.Peer.SearchResponse:
var searchResponse = SearchResponseFactory.FromByteArray(message);
if (SoulseekClient.Searches.TryGetValue(searchResponse.Token, out var search))
{
search.TryAddResponse(searchResponse);
}
break;
case MessageCode.Peer.BrowseResponse:
var browseWaitKey = new WaitKey(MessageCode.Peer.BrowseResponse, connection.Username);
try
{
SoulseekClient.Waiter.Complete(browseWaitKey, BrowseResponseFactory.FromByteArray(message));
}
catch (Exception ex)
{
SoulseekClient.Waiter.Throw(browseWaitKey, new MessageReadException("The peer returned an invalid browse response", ex));
throw;
}
break;
case MessageCode.Peer.InfoRequest:
UserInfo outgoingInfo;
try
{
outgoingInfo = await SoulseekClient.Options
.UserInfoResponseResolver(connection.Username, connection.IPEndPoint).ConfigureAwait(false);
}
catch (Exception ex)
{
outgoingInfo = await new SoulseekClientOptions()
.UserInfoResponseResolver(connection.Username, connection.IPEndPoint).ConfigureAwait(false);
Diagnostic.Warning($"Failed to resolve user info response: {ex.Message}", ex);
}
await connection.WriteAsync(outgoingInfo.ToByteArray()).ConfigureAwait(false);
break;
case MessageCode.Peer.BrowseRequest:
BrowseResponse browseResponse;
try
{
browseResponse = await SoulseekClient.Options.BrowseResponseResolver(connection.Username, connection.IPEndPoint).ConfigureAwait(false);
}
catch (Exception ex)
{
browseResponse = await new SoulseekClientOptions()
.BrowseResponseResolver(connection.Username, connection.IPEndPoint).ConfigureAwait(false);
Diagnostic.Warning($"Failed to resolve browse response: {ex.Message}", ex);
}
await connection.WriteAsync(browseResponse.ToByteArray()).ConfigureAwait(false);
break;
case MessageCode.Peer.FolderContentsRequest:
var folderContentsRequest = FolderContentsRequest.FromByteArray(message);
Directory outgoingFolderContents = null;
try
{
outgoingFolderContents = await SoulseekClient.Options.DirectoryContentsResponseResolver(
connection.Username,
connection.IPEndPoint,
folderContentsRequest.Token,
folderContentsRequest.DirectoryName).ConfigureAwait(false);
}
catch (Exception ex)
{
Diagnostic.Warning($"Failed to resolve directory contents response: {ex.Message}", ex);
}
if (outgoingFolderContents != null)
{
var folderContentsResponseMessage = new FolderContentsResponse(folderContentsRequest.Token, outgoingFolderContents);
await connection.WriteAsync(folderContentsResponseMessage.ToByteArray()).ConfigureAwait(false);
}
break;
case MessageCode.Peer.FolderContentsResponse:
var folderContentsResponse = FolderContentsResponse.FromByteArray(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.FolderContentsResponse, connection.Username, folderContentsResponse.Token), folderContentsResponse.Directory);
break;
case MessageCode.Peer.InfoResponse:
var incomingInfo = UserInfoResponseFactory.FromByteArray(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.InfoResponse, connection.Username), incomingInfo);
break;
case MessageCode.Peer.TransferResponse:
var transferResponse = TransferResponse.FromByteArray(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.TransferResponse, connection.Username, transferResponse.Token), transferResponse);
break;
case MessageCode.Peer.QueueDownload:
var queueDownloadRequest = EnqueueDownloadRequest.FromByteArray(message);
var(queueRejected, queueRejectionMessage) =
await TryEnqueueDownloadAsync(connection.Username, connection.IPEndPoint, queueDownloadRequest.Filename).ConfigureAwait(false);
if (queueRejected)
{
await connection.WriteAsync(new EnqueueFailedResponse(queueDownloadRequest.Filename, queueRejectionMessage).ToByteArray()).ConfigureAwait(false);
}
else
{
await TrySendPlaceInQueueAsync(connection, queueDownloadRequest.Filename).ConfigureAwait(false);
}
break;
case MessageCode.Peer.TransferRequest:
var transferRequest = TransferRequest.FromByteArray(message);
if (transferRequest.Direction == TransferDirection.Upload)
{
if (!SoulseekClient.Downloads.IsEmpty && SoulseekClient.Downloads.Values.Any(d => d.Username == connection.Username && d.Filename == transferRequest.Filename))
{
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.TransferRequest, connection.Username, transferRequest.Filename), transferRequest);
}
else
{
// reject the transfer with an empty reason. it was probably cancelled, but we can't be sure.
await connection.WriteAsync(new TransferResponse(transferRequest.Token, string.Empty).ToByteArray()).ConfigureAwait(false);
}
}
else
{
var(transferRejected, transferRejectionMessage) = await TryEnqueueDownloadAsync(connection.Username, connection.IPEndPoint, transferRequest.Filename).ConfigureAwait(false);
if (transferRejected)
{
await connection.WriteAsync(new TransferResponse(transferRequest.Token, transferRejectionMessage).ToByteArray()).ConfigureAwait(false);
await connection.WriteAsync(new EnqueueFailedResponse(transferRequest.Filename, transferRejectionMessage).ToByteArray()).ConfigureAwait(false);
}
else
{
await connection.WriteAsync(new TransferResponse(transferRequest.Token, "Queued").ToByteArray()).ConfigureAwait(false);
await TrySendPlaceInQueueAsync(connection, transferRequest.Filename).ConfigureAwait(false);
}
}
break;
case MessageCode.Peer.QueueFailed:
var queueFailedResponse = EnqueueFailedResponse.FromByteArray(message);
SoulseekClient.Waiter.Throw(new WaitKey(MessageCode.Peer.TransferRequest, connection.Username, queueFailedResponse.Filename), new TransferRejectedException(queueFailedResponse.Message));
break;
case MessageCode.Peer.PlaceInQueueResponse:
var placeInQueueResponse = PlaceInQueueResponse.FromByteArray(message);
SoulseekClient.Waiter.Complete(new WaitKey(MessageCode.Peer.PlaceInQueueResponse, connection.Username, placeInQueueResponse.Filename), placeInQueueResponse);
break;
case MessageCode.Peer.PlaceInQueueRequest:
var placeInQueueRequest = PlaceInQueueRequest.FromByteArray(message);
await TrySendPlaceInQueueAsync(connection, placeInQueueRequest.Filename).ConfigureAwait(false);
break;
case MessageCode.Peer.UploadFailed:
var uploadFailedResponse = UploadFailed.FromByteArray(message);
var msg = $"Download of {uploadFailedResponse.Filename} reported as failed by {connection.Username}";
var download = SoulseekClient.Downloads.Values.FirstOrDefault(d => d.Username == connection.Username && d.Filename == uploadFailedResponse.Filename);
if (download != null)
{
SoulseekClient.Waiter.Throw(new WaitKey(MessageCode.Peer.TransferRequest, download.Username, download.Filename), new TransferException(msg));
}
Diagnostic.Debug(msg);
break;
default:
Diagnostic.Debug($"Unhandled peer message: {code} from {connection.Username} ({connection.IPEndPoint}); {message.Length} bytes");
break;
}
}
catch (Exception ex)
{
Diagnostic.Warning($"Error handling peer message: {code} from {connection.Username} ({connection.IPEndPoint}); {ex.Message}", ex);
}
}
