how to get request header in tool handler

[Liudon]

in my tool handler, i need to get the request's header, how to get it?

[Liudon]

The client will bring a special header when making a request. Is there a way to get this header in the tool handler?

[Liudon]

i found the resolution，refer to this example

// authKey is a custom context key for storing the auth token.
type authKey struct{}

// withAuthKey adds an auth key to the context.
func withAuthKey(ctx context.Context, auth string) context.Context {
	return context.WithValue(ctx, authKey{}, auth)
}

// authFromRequest extracts the auth token from the request headers.
func authFromRequest(ctx context.Context, r *http.Request) context.Context {
	return withAuthKey(ctx, r.Header.Get("Authorization"))
}

server.WithHTTPContextFunc(authFromRequest)

you can custom context，pass header to context.Value.