public QosJob(IList <QosServer> qosServers, string title) : this()
{
// Copy the QoS Servers into the job, converting all the IP/Port to NetworkEndPoint and DateTime to ticks.
m_QosServers = new NativeArray <InternalQosServer>(qosServers?.Count ?? 0, Allocator.Persistent);
if (qosServers != null)
{
for (int i = 0; i < m_QosServers.Length; ++i)
{
// Indexing NativeArray returns temporary values, so can't edit in place.
m_QosServers[i] = new InternalQosServer(qosServers[i].ipv4, qosServers[i].port, qosServers[i].BackoffUntilUtc);
}
}
m_VisitedQosServers = new NativeArray <ulong>(qosServers?.Count ?? 0, Allocator.Persistent);
// Indexes into QosResults correspond to indexes into qosServers/m_QosServers
QosResults = new NativeArray <QosResult>(m_QosServers.Length, Allocator.Persistent);
// Convert the title to a NativeArray of bytes (since everything in the job has to be a value-type)
byte[] utf8Title = Encoding.UTF8.GetBytes(title);
m_TitleBytesUtf8 = new NativeArray <byte>(utf8Title.Length, Allocator.Persistent);
m_TitleBytesUtf8.CopyFrom(utf8Title);
}
public void Execute()
{
if (m_QosServers.Length == 0)
{
return; // Nothing to do.
}
m_JobExpireTimeUtc = DateTime.UtcNow.AddMilliseconds(TimeoutMs);
// Create the local socket
int errorcode = 0;
(m_Socket, errorcode) = CreateAndBindSocket();
if (m_Socket == -1 || errorcode != 0)
{
// Can't run the job
Debug.LogError("Failed to create and bind the local socket for QoS Check");
}
else
{
m_Identifier = (ushort)new Random().Next(ushort.MinValue, ushort.MaxValue);
for (int i = 0; i < m_QosServers.Length; ++i)
{
QosResult result = QosResults[i];
InternalQosServer server = m_QosServers[i];
if (QosHelper.ExpiredUtc(m_JobExpireTimeUtc))
{
Debug.LogWarning($"Ran out of time to finish remaining QoS Check for endpoint {i}.");
break;
}
// If we've already visited this server, just copy those results here.
if (QosServerVisited(server.Id))
{
if (TryCopyResult(server.Id, ref result) == false)
{
Debug.LogError($"Visited server must have a previous result available");
break;
}
}
else if (DateTime.UtcNow > server.BackoffUntilUtc) // Only contact this server if we are allowed
{
// For each iteration of the loop, give the remaining endpoints an equal fraction of the remaining
// overall job time. For example if there are five endpoints that each get 1000ms (5000ms total),
// and the first endpoint finishes in 200ms, the remaining endpoints will get 1200ms to complete
// (4800ms remaining / 4 endpoints = 1200ms/endpoint).
double allottedTimeMs = QosHelper.RemainingUtc(m_JobExpireTimeUtc).TotalMilliseconds / (m_QosServers.Length - i);
DateTime startTimeUtc = DateTime.UtcNow;
DateTime expireTimeUtc = DateTime.UtcNow.AddMilliseconds(allottedTimeMs);
#if UNITY_EDITOR || DEVELOPMENT_BUILD
Debug.Log($"QoS Check {i} gets {(expireTimeUtc - DateTime.UtcNow).TotalMilliseconds:F0}ms to complete.");
#endif
++m_Identifier;
int err = SendQosRequests(server.RemoteEndpoint, m_Identifier, expireTimeUtc, ref result);
if (err != 0)
{
Debug.LogError($"Error {err} sending QoS requests. Will attempt to receive responses anyway.");
}
err = RecvQosResponses(server.RemoteEndpoint, m_Identifier, expireTimeUtc, ref result);
if (err != 0)
{
Debug.LogError($"Error {err} receiving QoS responses. Will attempt to continue anyway.");
}
Debug.Log($"Received {result.ResponsesReceived}/{result.RequestsSent} responses from endpoint {i} in {(DateTime.UtcNow - startTimeUtc).TotalMilliseconds:F0}ms");
// Mark this server as visited
SetQosServerVisited(server.Id);
}
else
{
Debug.LogWarning($"Did not contact endpoint {i} due to backoff restrictions.");
}
// Save the result (even if we didn't contact the server)
QosResults[i] = result;
}
}
NativeBindings.network_close(ref m_Socket, ref errorcode);
}