private ICompressionProvider?ResolveCompressionProvider()
{
Debug.Assert(
_call.RequestGrpcEncoding != null,
"Response encoding should have been calculated at this point.");
var canCompress =
GrpcProtocolHelpers.CanWriteCompressed(CallOptions.WriteOptions) &&
!string.Equals(_call.RequestGrpcEncoding, GrpcProtocolConstants.IdentityGrpcEncoding, StringComparison.Ordinal);
if (canCompress)
{
if (_call.Channel.CompressionProviders.TryGetValue(_call.RequestGrpcEncoding, out var compressionProvider))
{
return(compressionProvider);
}
throw new InvalidOperationException($"Could not find compression provider for '{_call.RequestGrpcEncoding}'.");
}
return(null);
}