public static bool TryParse(BDictionary message, out FindNodeQuery query)
{
if (message.Contains("q", new BString("find_node")) &&
message.TryGetValue("t", out BString transactionId) && transactionId.Length > 0 &&
message.TryGetValue("a", out BDictionary arguments) &&
arguments.TryGetValue("id", out BString nodeId) && nodeId.Length == NodeID.Size &&
arguments.TryGetValue("target", out BString targetId) && targetId.Length == NodeID.Size)
{
query = new FindNodeQuery(new TransactionID(transactionId), new NodeID(nodeId), new NodeID(targetId));
if (arguments.TryGetValue("want", out BList wantList))
{
if (wantList.Contains(new BString("n4")))
{
query.Want |= Want.IPv4Nodes;
}
if (wantList.Contains(new BString("n6")))
{
query.Want |= Want.IPv6Nodes;
}
}
return(true);
}
query = null;
return(false);
}
public static bool TryParse(BDictionary message, out PingQuery query)
{
if (message.Contains("q", new BString("ping")) &&
message.TryGetValue("t", out BString transactionId) && transactionId.Length > 0 &&
message.TryGetValue("a", out BDictionary arguments) &&
arguments.TryGetValue("id", out BString nodeId) && nodeId.Length == NodeID.Size)
{
query = new PingQuery(new TransactionID(transactionId), new NodeID(nodeId));
return(true);
}
query = null;
return(false);
}
public static bool TryParse(BDictionary message, out GetPeersQuery query)
{
if (message.Contains("q", new BString("get_peers")) &&
message.TryGetValue("t", out BString transactionId) && transactionId.Length > 0 &&
message.TryGetValue("a", out BDictionary arguments) &&
arguments.TryGetValue("id", out BString nodeId) && nodeId.Length == NodeID.Size &&
arguments.TryGetValue("info_hash", out BString infoHash) && infoHash.Length == InfoHash.Size)
{
query = new GetPeersQuery(new TransactionID(transactionId), new NodeID(nodeId), new InfoHash(infoHash));
if (arguments.TryGetValue("want", out BList wantList))
{
if (wantList.Contains(new BString("n4"))) query.Want |= Want.IPv4Nodes;
if (wantList.Contains(new BString("n6"))) query.Want |= Want.IPv6Nodes;
}
return true;
}
query = null;
return false;
}
public static bool TryParse(BDictionary message, out AnnouncePeerQuery query)
{
if (message.Contains("q", new BString("announce_peer")) &&
message.TryGetValue("t", out BString transactionId) && transactionId.Length > 0 &&
message.TryGetValue("a", out BDictionary arguments) &&
arguments.TryGetValue("id", out BString nodeId) && nodeId.Length == NodeID.Size &&
arguments.TryGetValue("info_hash", out BString infoHash) && infoHash.Length == InfoHash.Size &&
arguments.TryGetValue("token", out BString token) && token.Length > 0 &&
arguments.TryGetValue("port", out BInteger port) && port.Value >= 0 && port.Value < 65536)
{
bool impliedPort = false;
if (arguments.TryGetValue("implied_port", out BInteger impliedPortValue))
{
impliedPort = impliedPortValue.Value == 1;
}
query = new AnnouncePeerQuery(
new TransactionID(transactionId), new NodeID(nodeId), new InfoHash(infoHash), new PeerToken(token), (int)port.Value, impliedPort);
return(true);
}
query = null;
return(false);
}
