protected override async Task <bool> PostServerInfoAsync(GameServer discordGameServer)
{
if (discordGameServer == null)
{
return(false);
}
MineQuery query = null;
try
{
query = new MineQuery(discordGameServer.ServerIP.Address, discordGameServer.ServerIP.Port, logger);
MineQueryResult serverInfo = await query.GetServerInfoAsync().ConfigureAwait(false);
if (serverInfo == null)
{
return(false);
}
SocketGuild guild = discordClient?.GetGuild(discordGameServer.GuildID);
SocketTextChannel channel = guild?.GetTextChannel(discordGameServer.ChannelID);
if (guild == null || channel == null)
{
return(false);
}
EmbedBuilder builder = new EmbedBuilder()
.WithColor(new Color(21, 26, 35))
.WithTitle($"Minecraft Server ({discordGameServer.ServerIP.Address}:{discordGameServer.ServerIP.Port})")
.WithDescription($"Motd: {serverInfo.Description.Motd}");
_ = serverInfo.Players.Sample != null && serverInfo.Players.Sample.Count > 0
? builder.AddField($"Online Players ({serverInfo.Players.Online}/{serverInfo.Players.Max})", string.Join(", ", serverInfo.Players.Sample.Select(x => x.Name)))
: builder.AddField("Online Players", $"{serverInfo.Players.Online}/{serverInfo.Players.Max}");
if (discordGameServer.GameVersion.IsEmpty())
{
discordGameServer.GameVersion = serverInfo.Version.Name;
_ = dbContext.GameServers.Update(discordGameServer);
_ = await dbContext.SaveChangesAsync().ConfigureAwait(false);
}
else
{
if (serverInfo.Version.Name != discordGameServer.GameVersion)
{
discordGameServer.GameVersion = serverInfo.Version.Name;
discordGameServer.LastVersionUpdate = DateTime.Now;
_ = dbContext.GameServers.Update(discordGameServer);
_ = await dbContext.SaveChangesAsync().ConfigureAwait(false);
}
}
string lastServerUpdate = "";
if (discordGameServer.LastVersionUpdate.HasValue)
{
lastServerUpdate = $" (Last update: {discordGameServer.LastVersionUpdate.Value})";
}
_ = builder.WithFooter($"Server version: {serverInfo.Version.Name}{lastServerUpdate} || Last check: {DateTime.Now}");
// Generate chart every full 10 minutes
if (DateTime.Now.Minute % 10 == 0)
{
string chart = await GenerateHistoryChartAsync(discordGameServer, serverInfo.Players.Online, serverInfo.Players.Max).ConfigureAwait(false);
if (!chart.IsEmptyOrWhiteSpace())
{
_ = builder.AddField("Player Count History", chart);
}
}
if (discordGameServer.MessageID.HasValue)
{
if (await channel.GetMessageAsync(discordGameServer.MessageID.Value).ConfigureAwait(false) is IUserMessage existingMessage && existingMessage != null)
{
await existingMessage.ModifyAsync(x => x.Embed = builder.Build()).ConfigureAwait(false);
}
else
{
logger.LogWarning($"Error getting updates for server {discordGameServer.ServerIP}. Original message was removed.");
await RemoveServerAsync(discordGameServer.ServerIP, discordGameServer.GuildID).ConfigureAwait(false);
_ = await channel.SendMessageAsync($"Error getting updates for server {discordGameServer.ServerIP}. Original message was removed. Please use the proper remove command to remove the gameserver").ConfigureAwait(false);
return(false);
}
}
else
{
IUserMessage message = await(channel?.SendMessageAsync("", false, builder.Build())).ConfigureAwait(false);
discordGameServer.MessageID = message.Id;
_ = dbContext.GameServers.Update(discordGameServer);
_ = await dbContext.SaveChangesAsync().ConfigureAwait(false);
}
}
public async Task <MineQueryResult> GetServerInfoAsync()
{
await client.ConnectAsync(Address, Port).ConfigureAwait(false);
if (!client.Connected)
{
return(null);
}
writeBuffer = new List <byte>();
NetworkStream stream = client.GetStream();
//Send a "Handshake" packet http://wiki.vg/Server_List_Ping#Ping_Process
WriteVarInt(47);
WriteString(Address.ToString());
WriteShort(25565);
WriteVarInt(1);
Flush(stream, 0);
// Send a "Status Request" packet http://wiki.vg/Server_List_Ping#Ping_Process
Flush(stream, 0);
byte[] readBuffer = new byte[1024];
var completeBuffer = new List <byte>();
int numberOfBytesRead;
do
{
numberOfBytesRead = await stream.ReadAsync(readBuffer).ConfigureAwait(false);
completeBuffer.AddRange(readBuffer.Take(numberOfBytesRead));
}while (numberOfBytesRead > 0);
try
{
byte[] b = completeBuffer.ToArray();
int length = ReadVarInt(b);
int packet = ReadVarInt(b);
int jsonLength = ReadVarInt(b);
if (jsonLength > completeBuffer.Count - offset)
{
//TODO: log receive error
return(null);
}
string json = ReadString(b, jsonLength);
MineQueryResult result = JsonSerializer.Deserialize <MineQueryResult>(json);
return(result);
}
catch (IOException ex)
{
logger.LogError(ex, $"Couldn't get MineCraft server info for {Address}:{Port}");
return(null);
}
finally
{
client.Close();
stream.Dispose();
}
}