/// <summary>
/// 处理Scalar函数
/// </summary>
/// <param name="cmd">数据库命令</param>
public DictNode HandleScalar(DbCommand cmd)
{
object obj;
using (DbConnection conn = new SqlConnection(connectionString))
{
conn.Open();
cmd.Connection = conn;
obj = cmd.ExecuteScalar();
}
DictNode result = new DictNode();
result.Add("code", 3);
BEncodedNode itemNode = CreateItemNode(obj);
result.Add("item", itemNode);
ListNode parmlistNode = CreateParmListNode(cmd);
if (parmlistNode.Count != 0)
{
result.Add("parmlist", parmlistNode);
}
return(result);
}
private void HandleParmsNode(BEncodedNode parmlistNode)
{
ListNode parmsNode = (ListNode)parmlistNode;
foreach (BEncodedNode node in parmsNode)
{
DictNode parmNode = (DictNode)node;
string name = ((BytesNode)parmNode["name"]).StringText;
string typeName = ((BytesNode)parmNode["type"]).StringText;
parameters[name].Value = NodeEncoder.GetObject(typeName, (BytesNode)parmNode["value"]);
}
}
/// <summary>
/// Get the list of peers
/// </summary>
/// <param name="node">The response node that received from tracker</param>
/// <returns>Return the list of peers</returns>
private List <Peer> GetPeers(DictNode node)
{
List <Peer> peers = new List <Peer>();
BEncodedNode peersNode = node["peers"];
if (peersNode is BytesNode)
{
var peersBytes = ((BytesNode)peersNode).ByteArray;
for (int i = 0; i < peersBytes.Length; i += 6)
{
string host = string.Format("{0}.{1}.{2}.{3}", peersBytes[i], peersBytes[i + 1], peersBytes[i + 2],
peersBytes[i + 3]);
int port = (peersBytes[i + 4] << 8) + peersBytes[i + 5];
Peer peer = new Peer
{
Host = host,
Port = port,
};
peers.Add(peer);
}
}
else if (peersNode is ListNode)
{
var listNode = peersNode as ListNode;
for (int i = 0; i < listNode.Count; i++)
{
DictNode dictNode = listNode[i] as DictNode;
string peerId = ((BytesNode)dictNode["peer id"]).StringText;
string ip = ((BytesNode)dictNode["ip"]).StringText;
int port = ((IntNode)dictNode["port"]).IntValue;
Peer peer = new Peer
{
Host = ip,
Port = port
};
peers.Add(peer);
}
}
return(peers);
}
