testing

const (
	// MetadataReplyHeaders is a request header that contains values that will
	// be echoed back to the client as response headers. The format of the value
	// is "key: val". To have the server reply with more than one response
	// header, supply multiple values in request metadata.
	MetadataReplyHeaders = "reply-with-headers"
	// MetadataReplyTrailers is a request header that contains values that will
	// be echoed back to the client as response trailers. Its format its the
	// same as MetadataReplyHeaders.
	MetadataReplyTrailers = "reply-with-trailers"
	// MetadataFailEarly is a request header that, if present and not zero,
	// indicates that the RPC should fail immediately with that code.
	MetadataFailEarly = "fail-early"
	// MetadataFailLate is a request header that, if present and not zero,
	// indicates that the RPC should fail at the end with that code. This is
	// different from MetadataFailEarly only for streaming calls. An early
	// failure means the call to fail before any request stream is read or any
	// response stream is generated. A late failure means the entire request and
	// response streams will be consumed/processed and only then will the error
	// code be sent.
	MetadataFailLate = "fail-late"
)