public void SetTraceHandler(
LIBSSH2_TRACE mask,
Action <string> handler)
{
this.sessionHandle.CheckCurrentThreadOwnsHandle();
Utilities.ThrowIfNull(handler, nameof(handler));
using (SshTraceSources.Default.TraceMethod().WithParameters(mask))
{
// Store this delegate in a field to prevent it from being
// garbage collected. Otherwise callbacks will suddenly
// start hitting GC'ed memory.
this.TraceHandlerDelegate = (sessionPtr, contextPtr, dataPtr, length) =>
{
Debug.Assert(contextPtr == IntPtr.Zero);
var data = new byte[length.ToInt32()];
Marshal.Copy(dataPtr, data, 0, length.ToInt32());
handler(Encoding.ASCII.GetString(data));
};
UnsafeNativeMethods.libssh2_trace_sethandler(
this.sessionHandle,
IntPtr.Zero,
this.TraceHandlerDelegate);
UnsafeNativeMethods.libssh2_trace(
this.sessionHandle,
mask);
}
}
public static extern void libssh2_trace(
SshSessionHandle session,
LIBSSH2_TRACE bitmask);
