fix(client): improve gRPC-Web client behavior with trailers with a space after the colon #2053
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… colon According to the gRPC Web Spec, Trailers should have a space after the colon, like this: grpc-status: 0 grpc-message: Message Here But tonic-web client and server both omit the space, like: grpc-status:0 grpc-message:Message Here This is likely fine for the server to do since most clients can handle having the space or not but the tonic-web client should also handle the space character being there, which is what this change does.
sudorandom
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sudorandom
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sudorandom
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Motivation
This was reported to me here: sudorandom/fauxrpc#15.
According to the gRPC Web spec, trailers should have a space after the colon, like this:
But tonic-web client and server both omit the space, like:
This is likely fine for the server to do since most clients can handle having the space or not but the tonic-web client should handle the space character being there (or not), which is what this change does.
Solution
The solution is to trim a space character from the trailer value, if it exists so that both formats are supported using the tonic-web client.
I am extremely new to rust, so feel free to close this PR or modify it in favor of a more conventionally rusty approach.