Update PROTOCOL-WEB.md
@ -83,7 +83,8 @@ in the body.
User Agent
* U-A: grpc-web-javascript
* Do NOT use User-Agent header (which is to be set by browsers, by default)
* Use X-User-Agent: grpc-web-javascript/0.1 (follow the same format as specified in [gRPC over HTTP2](http://www.grpc.io/docs/guides/wire.html))
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