public async Task <IEnumerable <Server> > GetServers(
MasterServerRegion region = MasterServerRegion.All,
params MasterServerFilter[] masterServerFilters)
{
var servers = new List <Server>();
using (var client = new UdpClient(new IPEndPoint(IPAddress.Any, 0)))
{
client.Connect(_steamSteamIpAddress, _steamSteamPort);
string thisServer = null;
while (thisServer != FIRST_AND_LAST_SERVER)
{
var requestPacket = CreateRequestPacket(thisServer ?? FIRST_AND_LAST_SERVER, region, masterServerFilters);
await client.SendAsync(requestPacket, requestPacket.Length);
var response = await client.ReceiveAsync();
var responseData = response.Buffer.ToList();
for (int i = HEADER_BYTES_LENGTH; i < responseData.Count; i++)
{
var ip = string.Join(".", responseData.GetRange(i, 4).ToArray());
int port = responseData[i + 4] << 8 | responseData[i + 5];
thisServer = string.Format("{0}:{1}", ip, port);
if (thisServer != FIRST_AND_LAST_SERVER)
{
servers.Add(new Server(new IPEndPoint(IPAddress.Parse(ip), port)));
}
i += 5;
}
}
}
return(servers);
}
private static byte[] CreateRequestPacket(string ipAddress, MasterServerRegion region, IEnumerable<MasterServerFilter> filters)
{
var buffer = new List<byte> { 0x31, (byte)region };
buffer.AddRange(System.Text.Encoding.ASCII.GetBytes(ipAddress));
buffer.Add(0x00);
var filtersString = string.Join("", filters.Select(x => x.Key + "\\" + x.Value));
buffer.AddRange(System.Text.Encoding.ASCII.GetBytes(filtersString));
return buffer.ToArray();
}
private static byte[] GetRequest(IPEndPoint lastServerEndPoint, MasterServerRegion region, IEnumerable <IFilter> filters)
{
var packet = new BufferBuilder();
packet.WriteEnum(MasterServerQueryPacketType.ServerListRequest);
packet.WriteEnum(region);
packet.WriteString(lastServerEndPoint?.ToString() ?? "0.0.0.0:0");
packet.WriteString(filters.GetFilterCollectionString());
return(packet.ToArray());
}
private static byte[] GetRequest(IPEndPoint lastServerEndPoint, MasterServerRegion region, IEnumerable<IFilter> filters)
{
var packet = new BufferBuilder();
packet.WriteEnum(MasterServerQueryPacketType.ServerListRequest);
packet.WriteEnum(region);
packet.WriteString(lastServerEndPoint?.ToString() ?? "0.0.0.0:0");
packet.WriteString(filters.GetFilterCollectionString());
return packet.ToArray();
}
private static byte[] CreateRequestPacket(string ipAddress, MasterServerRegion region, IEnumerable <MasterServerFilter> filters)
{
var buffer = new List <byte> {
0x31, (byte)region
};
buffer.AddRange(System.Text.Encoding.ASCII.GetBytes(ipAddress));
buffer.Add(0x00);
var filtersString = string.Join("", filters.Select(x => x.Key + "\\" + x.Value));
buffer.AddRange(System.Text.Encoding.ASCII.GetBytes(filtersString));
return(buffer.ToArray());
}
public IEnumerable <IGameServer> GetServersLazy(MasterServerRegion region, params IFilter[] filters)
{
return(GetServersLazy(new MasterServerRequest(region, filters)));
}
public async Task <IEnumerable <IGameServer> > GetServersAsync(MasterServerRegion region, params IFilter[] filters)
{
return(await GetServersAsync(new MasterServerRequest(region, filters)));
}
public MasterServerRequest(MasterServerRegion region, params IFilter[] filters)
{
Region = region;
Filters = filters;
}
public async Task<IEnumerable<IGameServer>> GetServersAsync(MasterServerRegion region, params IFilter[] filters)
{
return await GetServersAsync(new MasterServerRequest(region, filters));
}
public MasterServerRequest(MasterServerRegion region, params IFilter[] filters)
{
Region = region;
Filters = filters;
}
public async Task<IEnumerable<Server>> GetServers(
MasterServerRegion region = MasterServerRegion.All,
params MasterServerFilter[] masterServerFilters)
{
var servers = new List<Server>();
using (var client = new UdpClient(new IPEndPoint(IPAddress.Any, 0)))
{
client.Connect(_steamSteamIpAddress, _steamSteamPort);
string thisServer = null;
while (thisServer != FIRST_AND_LAST_SERVER)
{
var requestPacket = CreateRequestPacket(thisServer ?? FIRST_AND_LAST_SERVER, region, masterServerFilters);
await client.SendAsync(requestPacket, requestPacket.Length);
var response = await client.ReceiveAsync();
var responseData = response.Buffer.ToList();
for (int i = HEADER_BYTES_LENGTH; i < responseData.Count; i++)
{
var ip = string.Join(".", responseData.GetRange(i, 4).ToArray());
int port = responseData[i + 4] << 8 | responseData[i + 5];
thisServer = string.Format("{0}:{1}", ip, port);
if (thisServer != FIRST_AND_LAST_SERVER)
{
servers.Add(new Server(new IPEndPoint(IPAddress.Parse(ip), port)));
}
i += 5;
}
}
}
return servers;
}
