Freezes program while injecting -> waiting for URL URI response

Hey I am using your Library and trying ot inject a dll doing it the following way:

var process = Process.GetProcessesByName(ProcessName)[0];
var dllFilePath = Path.GetTempPath() + DllName + ".dll";
var flags = MappingFlags.None;
var mapper = new LibraryMapper(process, dllFilePath, flags);
mapper.MapLibrary();

Somehow the injector freezes while injecting, and I traced it down to this function in SymbolHandler.cs:

using var response = await httpClient.GetAsync(new Uri($"https://msdl.microsoft.com/download/symbols/{pdbData.Path}/{pdbData.Guid:N}{pdbData.Age}/{pdbData.Path}"));

I kept waiting for a few minutes but nothing happened, I guess it waits for a response but can’t reach the url?

The first 2 requests worked, then it just freezed the program.

[Dewera]

Is this issue still relevant? I still can’t replicate any of these issues (and pipeline doesn’t seem to have issue either.)

[Baseult]

Hey I changed the download and now this is working:

 // Download the PDB from the Microsoft symbol server

HttpWebRequest request = (HttpWebRequest)WebRequest.Create($"https://msdl.microsoft.com/download/symbols/{pdbData.Path}/{pdbData.Guid:N}{pdbData.Age}/{pdbData.Path}");
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (Stream stream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
    using (FileStream strm = File.Create(pdbFilePath))
    using (StreamWriter sw = new StreamWriter(strm))
        sw.Write(reader.ReadToEnd());
}

return pdbFilePath;

Somehow I get another 2 errors now:

"System can not find the specified file" at
return GetModule("ntdll.dll").Address + _symbolHandler.GetSymbol(symbolName).RelativeAddress;
in ProcessContext.cs

because of the check in SymbolHandler.cs:
if (symbolTableAddress == 0)
    {
        throw new Win32Exception();
    }

and

"The key already existed in the dictionary" at
_moduleCache.TryAdd(moduleName, new Module(moduleAddress, new PeImage(File.ReadAllBytes(moduleFilePath))));
in ProcessContext.cs
at System.Collections.Concurrent.ConcurrentDictionary<TKey, TValue>.System.Collections.Generic.IDictionary<TKey, TValue>.Add(TKey, TValue)

Just in case the download code wasn’t working correctly, I downloaded the pdb manually and placed it inside the Dependencies folder -> Same result.