public static void EnsureZmqLibrary()
{
IntPtr libPtr = Native.LoadLibrary("libzmq");
if (libPtr == IntPtr.Zero)
{
LoadEmbeddedLibary();
}
}
private static void LoadEmbeddedLibary()
{
var bitnessPath = String.Format("x{0}", Environment.Is64BitProcess ? 64 : 86);
var asm = typeof(Context).Assembly;
string resourceName = String.Format(
"Castle.Zmq.Native.lib.{0}.libzmq.dll.gz",
bitnessPath);
var dir = String.Format("castle-zmq-{0}", typeof(Context).Assembly.GetName().Version);
dir = Path.Combine(Path.GetTempPath(), dir);
dir = Path.Combine(dir, bitnessPath);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var tempFile = Path.Combine(dir, "libzmq.dll");
// Try to delete and recreate, in case of file corruption
if (File.Exists(tempFile))
{
try
{
File.Delete(tempFile);
}
catch { } // Might be in use by another process; likely not corrupted
}
if (!File.Exists(tempFile)) // if delete was successful, create it
{
using (var stream = asm.GetManifestResourceStream(resourceName))
using (var gzip = new GZipStream(stream, CompressionMode.Decompress))
using (var file = File.Create(tempFile))
{
gzip.CopyTo(file);
file.Flush(true);
}
}
IntPtr libPtr = Native.LoadLibrary(tempFile);
if (libPtr == IntPtr.Zero)
{
throw new InvalidOperationException("Unable to load libzmq " + (Environment.Is64BitProcess ? "x64" : "win32") + " from " + tempFile);
}
}