使用Monotorrent在VB.NET中加载Torrent
我正在制作一个简单的应用程序,使用MonoTorrent下载torrent文件。但是我无法正确加载torrent,我已经查看了所有可用信息 这就是我使用的代码:使用Monotorrent在VB.NET中加载Torrent,vb.net,torrent,monotorrent,Vb.net,Torrent,Monotorrent,我正在制作一个简单的应用程序,使用MonoTorrent下载torrent文件。但是我无法正确加载torrent,我已经查看了所有可用信息 这就是我使用的代码: Imports MonoTorrent.BEncoding Imports MonoTorrent.Client Imports MonoTorrent.Client.Tracker Imports MonoTorrent.Common Imports System.IO Imports System.Net Public Cl
Imports MonoTorrent.BEncoding
Imports MonoTorrent.Client
Imports MonoTorrent.Client.Tracker
Imports MonoTorrent.Common
Imports System.IO
Imports System.Net
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
End Class
Module BitTorrentAnnounceReader
Sub main()
'load Torrentfile
Dim TorrentFile As torrent = ("D:\youtorrent.torrent")
Console.WriteLine(TorrentFile.Name)
'generate annouce paramters
'since we simluate a BitTornado Client double check PeerID and Key Paramter
Dim AnnounceParameter As New AnnounceParameters
AnnounceParameter.BytesLeft = TorrentFile.Size
AnnounceParameter.BytesUploaded = 0
AnnounceParameter.BytesDownloaded = 0
AnnounceParameter.Port = 12224
AnnounceParameter.InfoHash = TorrentFile.InfoHash
AnnounceParameter.PeerId = "T03I-----" & GenerateTorrentClientKeys(11, 1)
AnnounceParameter.ClientEvent = TorrentEvent.Started
'a torrentfile can have more than one url, we use only the first one
'the url should have http to work for this example
Dim AnnounceUrl As String = TorrentFile.AnnounceUrls.Item(0).Item(0).ToString
Console.WriteLine(AnnounceUrl)
'the full announceurl that will fired to tracker
'we are simulating a BitTorando Client
Dim FullAnnounceUrl As String = CreateAnnounceString(AnnounceParameter, AnnounceUrl, GenerateTorrentClientKeys(6))
'building a webrequest for tracker request; some silly line look at comments on
'MonoTorrent.Client.Tracker.HTTPTracker.Announce
Dim req As HttpWebRequest = CType(WebRequest.Create(FullAnnounceUrl), HttpWebRequest)
req.KeepAlive = False
req.Proxy = New WebProxy
'we want to simulate a BitTornado Client, so http headers
req.UserAgent = "User-Agent: BitTornado/T-0.3.18"
'to simulate full client we need also gzip but for better usage we dont use it
' req.Headers.Add("Accept-Encoding", "gzip")
' If (resp.ContentEncoding.ToLower().Contains("gzip")) Then
' Str = New IO.Compression.GZipStream(Str, IO.Compression.CompressionMode.Decompress)
Dim response As HttpWebResponse = req.GetResponse
Dim fs As Stream = WebResponseToStream(response)
Dim peers As List(Of Peer) = AnnounceGetPeerList(fs)
Console.WriteLine("Tracker returned:" & peers.Count)
For Each PeerInfo As Peer In peers
Console.WriteLine(PeerInfo.ConnectionUri.Host & ":" & PeerInfo.ConnectionUri.Port)
Next
Console.ReadKey()
End Sub
''' <summary>
''' Generate a random key depending on which TorrentClient to simulate
''' </summary>
''' <param name="len"></param>
''' <param name="keys"></param>
''' <returns></returns>
''' <remarks></remarks>
Function GenerateTorrentClientKeys(ByVal len As Integer, Optional ByVal keys As Integer = 1) As String
Dim Chars() As String = {"abcdefghijklmnopqrstuvwxyz0123456789", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"}
'Chars[0] = uTorrent Keys
'Chars[1] = BitTornado Keys
Dim str As String = ""
Dim r As New System.Random()
For i = 1 To len
str &= Chars(keys).Substring(r.Next(1, Chars(keys).Length), 1)
Next
Return str
End Function
''' <summary>
''' A simple way of parsing a bencoded peerlist. it will autodecode compact mode request
''' you can find the full announce parser in the orignal file:
'''
''' MonoTorrent.Client.Tracker.HTTPTracker.HandleAnnounce
''' http://anonsvn.mono-project.com/viewvc/trunk/bitsharp/src/MonoTorrent/MonoTorrent.Client/Tracker/HTTPTracker.cs
''' </summary>
''' <param name="fs"></param>
''' <returns></returns>
''' <remarks></remarks>
Function AnnounceGetPeerList(ByVal fs As Stream) As List(Of Peer)
'you can also use a file with a torrenrequest
'Dim reader As New RawReader(IO.File.Open("file.req", IO.FileMode.Open), False)
'decode the bencoded stream
Dim dictionary As BEncodedDictionary = BEncodedValue.Decode(Of BEncodedDictionary)(fs)
Dim peers As New List(Of Peer)
For Each keypair In dictionary
Select Case keypair.Key.ToString
Case "interval"
'MsgBox TimeSpan.FromSeconds(int.Parse(keypair.Value.ToString()));
'MsgBox(keypair.Value.ToString)
Case "peers"
If TypeOf keypair.Value Is BEncodedList Then
peers.AddRange(Peer.Decode(DirectCast(keypair.Value, BEncodedList)))
ElseIf TypeOf keypair.Value Is BEncodedString Then
peers.AddRange(Peer.Decode(DirectCast(keypair.Value, BEncodedString)))
End If
Case Else
'MsgBox("HttpTracker - Unknown announce tag received:" & keypair.Key.ToString() & keypair.Value.ToString())
End Select
Next
Return peers
End Function
''' <summary>
''' Original CreateAnnounceString is private only and we need to modify it a little bit; this the old one out of svn
''' they have created here a better function that uses UriQueryBuilder but its oversized here
'''
''' MonoTorrent.Client.Tracker.HTTPTracker.CreateAnnounceString
''' http://anonsvn.mono-project.com/viewvc/trunk/bitsharp/src/MonoTorrent/MonoTorrent.Client/Tracker/HTTPTracker.cs?revision=141866
''' </summary>
''' <param name="parameters"></param>
''' <param name="Uri">AnnounceURL of the TorrentFile</param>
''' <param name="Key">a radon key paramter</param>
''' <returns>url to use with a WebRequest</returns>
''' <remarks></remarks>
Private Function CreateAnnounceString(ByVal parameters As AnnounceParameters, ByVal Uri As String, ByVal Key As String) As String
Dim sb As New System.Text.StringBuilder(256)
'base.LastUpdated = DateTime.Now;
' FIXME: This method should be tidied up. I don't like the way it current works
sb.Append(Uri)
sb.Append(If(Uri.Contains("?"), "&"c, "?"c))
sb.Append("info_hash=")
sb.Append(parameters.InfoHash.UrlEncode())
sb.Append("&peer_id=")
sb.Append(parameters.PeerId)
sb.Append("&port=")
sb.Append(parameters.Port)
If parameters.SupportsEncryption Then
sb.Append("&supportcrypto=1")
End If
If parameters.RequireEncryption Then
sb.Append("&requirecrypto=1")
End If
sb.Append("&uploaded=")
sb.Append(parameters.BytesUploaded)
sb.Append("&downloaded=")
sb.Append(parameters.BytesDownloaded)
sb.Append("&left=")
sb.Append(parameters.BytesLeft)
sb.Append("&compact=1")
' Always use compact response
sb.Append("&numwant=")
sb.Append(100)
If Not Uri.Contains("&key=") AndAlso Not Uri.Contains("?key=") Then
sb.Append("&key=")
' The 'key' protocol, used as a kind of 'password'. Must be the same between announces
sb.Append(Key)
End If
If parameters.Ipaddress IsNot Nothing Then
sb.Append("&ip=")
sb.Append(parameters.Ipaddress)
End If
' If we have not successfully sent the started event to this tier, override the passed in started event
' Otherwise append the event if it is not "none"
'if (!parameters.Id.Tracker.Tier.SentStartedEvent)
'{
' sb.Append("&event=started");
' parameters.Id.Tracker.Tier.SendingStartedEvent = true;
'}
If parameters.ClientEvent <> TorrentEvent.None Then
sb.Append("&event=")
sb.Append(parameters.ClientEvent.ToString().ToLower())
End If
Return sb.ToString()
End Function
''' <summary>
''' HttpWebResponse and GetResponseStream dont gives use a full readable stream so we must convert it
'''
''' Look at: MonoTorrent.Client.Tracker.HTTPTracker.DecodeResponse
''' http://anonsvn.mono-project.com/viewvc/trunk/bitsharp/src/MonoTorrent/MonoTorrent.Client/Tracker/HTTPTracker.cs
''' or
''' http://bytes.com/topic/c-sharp/answers/232436-download-binary-file-http#post949811
''' </summary>
''' <param name="response"></param>
''' <returns></returns>
''' <remarks></remarks>
Function WebResponseToStream(ByVal response As HttpWebResponse) As Stream
Dim responseStream As Stream = response.GetResponseStream
Dim fs As MemoryStream = New MemoryStream(256)
Dim buffer As Byte() = New Byte(4095) {}
Dim length As Integer = responseStream.Read(buffer, 0, 4096)
While length > 0
fs.Write(buffer, 0, length)
length = responseStream.Read(buffer, 0, 4096)
End While
fs.Seek(0, SeekOrigin.Begin)
Return fs
End Function
End Module
Vb.net在文本torrent上向我抛出了一个“预期类型”错误。有什么解决方案吗?谢谢大家!试试看
Dim TorrentFile As torrent = Torrent.Load("D:\youtorrent.torrent")
我认为它抛出了该错误,因为您的vb.net项目针对的是与您引用的Monotorrent dll不同的.net framework。我测试了一个项目,发现了相同的问题,然后将我的vb项目切换到target.net 2.0,它可以识别。更改为net 2.0版后,我遇到了相同的问题:您的Monotorrent导入了吗s突出显示为不可识别或未被使用?如果删除导入,然后将其添加回,在运行之前它似乎可以识别它,然后再次出错?如果对任何这些问题都是肯定的,则与dll有关。MonoTorrent引用的“复制本地”是否设置为True或False?您被忽略了嗯,我又开始为.NET2.0做项目了,现在一切似乎都很好,但代码似乎没有下载任何.torrent文件
Dim TorrentFile As torrent = Torrent.Load("D:\youtorrent.torrent")