public void Update()
{
if (socket.Poll(0, SelectMode.SelectRead))
{
int read = 0;
buffer.SetSize(MAX_PACKET_SIZE); // This should just reset the internal size to MAX_PACKET_SIZE
buffer.ResetPointer();
try
{
read = socket.ReceiveFrom(buffer.byteArr, buffer.byteArr.Length, SocketFlags.None,
ref endpoint);
}
catch (SocketException e)
{
// If the exception was a connection reset then ignore it otherwise rethrow it.
if (e.SocketErrorCode != SocketError.ConnectionReset)
{
throw;
}
}
if (read > 0)
{
var header = new QueryHeader();
header.Deserialize(buffer);
buffer.ResetPointer();
foreach (var query in Queries)
{
if (query.Server == null || !endpoint.Equals(query.Server))
{
continue;
}
switch (query.State)
{
case ClientState.Idle:
break;
case ClientState.WaitingForChallange:
if ((MessageType)header.Type == MessageType.ChallengeResponse)
{
query.ChallengeId = header.ChallengeId;
query.RTT = SQPClient.stopwatch.ElapsedMilliseconds - query.StartTime;
query.StartTime = SQPClient.stopwatch.ElapsedMilliseconds;
SendServerInfoQuery(query);
}
break;
case ClientState.WaitingForResponse:
if ((MessageType)header.Type == MessageType.QueryResponse)
{
query.ServerInfo.Deserialize(buffer);
query.RTT =
(query.RTT + (SQPClient.stopwatch.ElapsedMilliseconds - query.StartTime)) / 2;
query.ValidResult = true;
query.State = ClientState.Idle;
}
break;
default:
break;
}
}
}
}
foreach (var query in Queries)
{
if (query.State != ClientState.Idle)
{
var now = SQPClient.stopwatch.ElapsedMilliseconds;
// If we have not received anything from a server then let's reset it's state to Idle
if (now - query.StartTime > QUERY_TIMEOUT)
{
query.State = ClientState.Idle;
query.ValidResult = false;
}
}
}
}
public void Update()
{
if (socket.Poll(0, SelectMode.SelectRead))
{
buffer.SetSize(MAX_PACKET_SIZE);
buffer.ResetPointer();
int read = socket.ReceiveFrom(buffer.byteArr, buffer.byteArr.Length, SocketFlags.None, ref endpoint);
if (read > 0)
{
var header = new QueryHeader();
header.Deserialize(buffer);
var type = (MessageType)header.Type;
switch (type)
{
case MessageType.ChallengeRequest:
{
if (!outstandingTokens.ContainsKey(endpoint))
{
buffer.Clear();
// Issue a challenge token to this endpoint
uint token = GetNextToken();
var response = new ChallengeResponse();
response.Header.ChallengeId = token;
response.Serialize(ref buffer);
var data = buffer.CompressBytes();
socket.SendTo(data, data.Length, SocketFlags.None, endpoint);
outstandingTokens.Add(endpoint, token);
}
}
break;
case MessageType.QueryRequest:
{
uint token;
if (!outstandingTokens.TryGetValue(endpoint, out token))
{
return;
}
outstandingTokens.Remove(endpoint);
buffer.ResetPointer();
var request = new QueryRequest();
request.Deserialize(buffer);
if (request.Header.ChallengeId != token)
{
return;
}
if ((ChunkType)request.RequestedChunks == ChunkType.ServerInfo)
{
var response = serverInfo;
response.QueryHeader.Header.ChallengeId = token;
buffer.Clear();
response.Serialize(ref buffer);
var data = buffer.CompressBytes();
socket.SendTo(data, data.Length, SocketFlags.None, endpoint);
}
}
break;
default:
break;
}
}
}
}