private static void DownloadSteam3(int depotId, ulong depot_manifest, byte[] depotKey, string installDir)
{
Console.Write("Finding content servers...");
List <IPEndPoint> serverList = steam3.steamClient.GetServersOfType(EServerType.CS);
List <CDNClient.ClientEndPoint> cdnServers = null;
int tries = 0, counterDeferred = 0;
for (int i = 0; ; i++)
{
IPEndPoint endpoint = serverList[i % serverList.Count];
cdnServers = CDNClient.FetchServerList(new CDNClient.ClientEndPoint(endpoint.Address.ToString(), endpoint.Port), Config.CellID);
if (cdnServers == null)
{
counterDeferred++;
}
if (cdnServers != null && cdnServers.Count((ep) => { return(ep.Type == "CS"); }) > 0)
{
break;
}
if (((i + 1) % serverList.Count) == 0)
{
if (++tries > MAX_CONNECT_RETRIES)
{
Console.WriteLine("\nGiving up finding Steam3 content server.");
return;
}
Console.Write("\nSearching for content servers... (deferred: {0})", counterDeferred);
counterDeferred = 0;
Thread.Sleep(1000);
}
}
if (cdnServers == null || cdnServers.Count == 0)
{
Console.WriteLine("Unable to find any Steam3 content servers");
return;
}
Console.WriteLine(" Done!");
Console.Write("Downloading depot manifest...");
List <CDNClient.ClientEndPoint> cdnEndpoints = cdnServers.Where((ep) => { return(ep.Type == "CDN"); }).ToList();
List <CDNClient.ClientEndPoint> csEndpoints = cdnServers.Where((ep) => { return(ep.Type == "CS"); }).ToList();
CDNClient cdnClient = null;
foreach (var server in csEndpoints)
{
CDNClient client = new CDNClient(server, steam3.AppTickets[(uint)depotId]);
if (client.Connect())
{
cdnClient = client;
break;
}
}
if (cdnClient == null)
{
Console.WriteLine("\nCould not initialize connection with CDN.");
return;
}
DepotManifest depotManifest = cdnClient.DownloadDepotManifest(depotId, depot_manifest);
if (depotManifest == null)
{
Console.WriteLine("\nUnable to download manifest {0} for depot {1}", depot_manifest, depotId);
return;
}
if (!depotManifest.DecryptFilenames(depotKey))
{
Console.WriteLine("\nUnable to decrypt manifest for depot {0}", depotId);
return;
}
Console.WriteLine(" Done!");
ulong complete_download_size = 0;
ulong size_downloaded = 0;
depotManifest.Files.RemoveAll((x) => !TestIsFileIncluded(x.FileName));
depotManifest.Files.Sort((x, y) => { return(x.FileName.CompareTo(y.FileName)); });
foreach (var file in depotManifest.Files)
{
complete_download_size += file.TotalSize;
}
foreach (var file in depotManifest.Files)
{
string download_path = Path.Combine(installDir, file.FileName);
if (file.Flags.HasFlag(EDepotFileFlag.Directory))
{
if (!Directory.Exists(download_path))
{
Directory.CreateDirectory(download_path);
}
continue;
}
string dir_path = Path.GetDirectoryName(download_path);
if (!Directory.Exists(dir_path))
{
Directory.CreateDirectory(dir_path);
}
// TODO: non-checksum validation
FileInfo fi = new FileInfo(download_path);
if (fi.Exists && (ulong)fi.Length == file.TotalSize)
{
size_downloaded += file.TotalSize;
Console.WriteLine("{0,6:#00.00}% {1}", ((float)size_downloaded / (float)complete_download_size) * 100.0f, download_path);
continue;
}
Console.Write("{0,6:#00.00}% {1}", ((float)size_downloaded / (float)complete_download_size) * 100.0f, download_path);
FileStream fs = File.Create(download_path);
fs.SetLength((long)file.TotalSize);
foreach (var chunk in file.Chunks)
{
string chunkID = EncodeHexString(chunk.ChunkID);
byte[] encrypted_chunk = cdnClient.DownloadDepotChunk(depotId, chunkID);
byte[] chunk_data = CDNClient.ProcessChunk(encrypted_chunk, depotKey);
fs.Seek((long)chunk.Offset, SeekOrigin.Begin);
fs.Write(chunk_data, 0, chunk_data.Length);
size_downloaded += chunk.UncompressedLength;
Console.CursorLeft = 0;
Console.Write("{0,6:#00.00}%", ((float)size_downloaded / (float)complete_download_size) * 100.0f);
}
Console.WriteLine();
}
}