public PeerQueryReply DoPeerQuery(string[] serverAddresses, int serverPort, string number)
{
if (!ConnectToAnyServer(serverAddresses, serverPort))
{
return(null);
}
PeerQueryReply reply = SendPeerQuery(number);
Disconnect();
return(reply);
}
/// <summary>
/// Query for number
/// </summary>
/// <param name="number"></param>
/// <returns>peer or null</returns>
private PeerQueryReply SendPeerQuery(string number)
{
Logging.Instance.Log(LogTypes.Debug, TAG, nameof(SendPeerQuery), $"number='{number}'");
PeerQueryReply reply = new PeerQueryReply();
if (client == null)
{
Logging.Instance.Error(TAG, nameof(SendPeerQuery), "no server connection");
reply.Error = "no server connection";
return(reply);
}
if (string.IsNullOrEmpty(number))
{
reply.Error = "no query number";
return(reply);
}
// convert number to Int32
number = number.Replace(" ", "");
if (!UInt32.TryParse(number, out uint num))
{
reply.Error = "invalid number";
return(reply);
}
byte[] sendData = new byte[2 + 5];
sendData[0] = 0x03; // Peer_query
sendData[1] = 0x05; // length
byte[] numData = BitConverter.GetBytes(num);
Buffer.BlockCopy(numData, 0, sendData, 2, 4);
sendData[6] = 0x01;; // version 1
try
{
stream.Write(sendData, 0, sendData.Length);
}
catch (Exception ex)
{
Logging.Instance.Error(TAG, nameof(SendPeerQuery), $"error sending data to subscribe server", ex);
reply.Error = "reply server error";
return(reply);
}
byte[] recvData = new byte[102];
int recvLen;
try
{
recvLen = stream.Read(recvData, 0, recvData.Length);
}
catch (Exception ex)
{
Logging.Instance.Error(TAG, nameof(SendPeerQuery), $"error receiving data from subscribe server", ex);
reply.Error = "reply server error";
return(reply);
}
if (recvLen == 0)
{
reply.Error = $"no data received";
return(reply);
}
if (recvData[0] == 0x04)
{
// peer not found
Logging.Instance.Log(LogTypes.Info, TAG, nameof(SendPeerSearch), $"peer not found");
reply.Error = $"peer not found {number}";
reply.Valid = true;
return(reply);
}
if (recvData[0] != 0x05)
{
// invalid packet
Logging.Instance.Log(LogTypes.Error, TAG, nameof(SendPeerSearch), $"invalid packet id ({recvData[0]:X02})");
reply.Error = $"invalid packet id ({recvData[0]:X02})";
return(reply);
}
if (recvLen < 2 + 0x64)
{
Logging.Instance.Log(LogTypes.Error, TAG, nameof(SendPeerSearch), $"received data to short ({recvLen} bytes)");
reply.Error = $"received data to short ({recvLen} bytes)";
return(reply);
}
if (recvData[1] != 0x64)
{
Logging.Instance.Log(LogTypes.Error, TAG, nameof(SendPeerSearch), $"invalid length value ({recvData[1]})");
reply.Error = $"invalid length value ({recvData[1]})";
return(reply);
}
reply.Data = ByteArrayToPeerData(recvData, 2);
reply.Valid = true;
reply.Error = "ok";
return(reply);
}
