Response is not compressed when Grpc-Accept-Encoding header contains spaces between values #1881
Description
What version of gRPC and what language are you using?
Grpc.*: 2.4.7
C#
What operating system (Linux, Windows,...) and version?
macOS
What runtime / compiler are you using (e.g. .NET Core SDK version dotnet --info)
.NET SDK (reflecting any global.json):
Version: 6.0.400
What did you do?
Enable gzip compression on Objective-C gRPC client
What did you expect to see?
Response to be compressed
What did you see instead?
Response was not compressed
Anything else we should know about your project / environment?
The issue seems to occur due to the Objective-C client having a space between the compression algorithms in the Grpc-Accept-Encoding header.
Example Obj-C header:
Grpc-Accept-Encoding: identity, deflate, gzip
The following middleware appears to resolve the issue:
app.Use((context, next) =>
{
context.Request.Headers["Grpc-Accept-Encoding"] = context.Request.Headers["Grpc-Accept-Encoding"]
.ToString().Replace(" ", string.Empty);
return next(context);
});