private void OnRecvResponseX(IPEndPoint ipinfo, DHTResponseMessage msg)
{
if (msg == null)
{
return;
}
BDictionary data = msg.Data;
var tid = data.Get <BString>("t");
var returnValues = data.Get <BDictionary>("r");
if (returnValues == null)
{
// response is invalid
return;
}
BString id = returnValues.Get <BString>("id");
BString tokStr = returnValues.Get <BString>("token");
BList valuesList = returnValues.Get <BList>("values");
BString nodesStr = returnValues.Get <BString>("nodes");
var remoteNode = new DHTNode(id.Value, ipinfo);
UpdateRoutingTable(remoteNode);
// define type of response by transactionId of query/response
QueryType queryType = fTransactions.CheckQuery(tid);
switch (queryType)
{
case QueryType.Ping:
OnRecvPingResponse(remoteNode);
break;
case QueryType.FindNode:
OnRecvFindNodeResponse(remoteNode, nodesStr);
break;
case QueryType.GetPeers:
OnRecvGetPeersResponse(remoteNode, nodesStr, valuesList, tokStr);
break;
case QueryType.AnnouncePeer:
OnRecvAnnouncePeerResponse(remoteNode);
break;
case QueryType.None:
// TransactionId bad or unknown
OnRecvCustomResponse(remoteNode, data);
break;
}
}
public static DHTMessage ParseBuffer(byte[] buffer)
{
if (buffer == null || buffer.Length == 0 || buffer[0] != 'd')
{
return(null);
}
var data = fParser.Parse <BDictionary>(buffer);
var bsY = data.Get <BString>("y");
if (bsY == null)
{
return(null);
}
string strMsgType = bsY.ToString();
MessageType msgType = DHTMessage.GetMessageType(strMsgType);
DHTMessage result;
switch (msgType)
{
case MessageType.Response:
result = new DHTResponseMessage(msgType, QueryType.None, data);
break;
case MessageType.Query:
result = new DHTQueryMessage(msgType, QueryType.None, data);
break;
case MessageType.Error:
result = new DHTErrorMessage(msgType, QueryType.None, data);
break;
default:
result = new DHTMessage(msgType, QueryType.None, data);
break;
}
result.Parse();
return(result);
}
private void OnRecvResponseX(IPEndPoint ipinfo, DHTResponseMessage msg)
{
if (msg == null)
{
return;
}
BDictionary data = msg.Data;
var tid = data.Get <BString>("t");
var returnValues = data.Get <BDictionary>("r");
BString id = null;
BString tokStr = null;
BList valuesList = null;
BString nodesStr = null;
if (returnValues != null)
{
id = returnValues.Get <BString>("id");
tokStr = returnValues.Get <BString>("token");
valuesList = returnValues.Get <BList>("values");
nodesStr = returnValues.Get <BString>("nodes");
}
if (id == null || id.Length == 0)
{
// response is invalid
return;
}
fRoutingTable.UpdateNode(new DHTNode(id.Value, ipinfo));
// according to bep_????, most types of response contain a list of nodes
ProcessNodesStr(ipinfo, nodesStr);
// define type of response by transactionId of query/response
QueryType queryType = CheckTransaction(tid);
bool canAnnounce = false;
switch (queryType)
{
case QueryType.Ping:
RaisePeerPinged(ipinfo, id.Value);
break;
case QueryType.FindNode:
break;
case QueryType.GetPeers:
if (tokStr != null && tokStr.Length != 0)
{
if (!ProcessValuesStr(ipinfo, valuesList))
{
canAnnounce = true;
}
}
break;
case QueryType.AnnouncePeer:
break;
case QueryType.None:
// TransactionId bad or unknown
RaiseResponseReceived(ipinfo, id.Value, data);
break;
}
if (canAnnounce)
{
SendAnnouncePeerQuery(ipinfo, fSearchInfoHash, 1, fPublicEndPoint.Port, tokStr);
}
}