title: grpc header/cookie in Go
body: <p>I want to do place on server application which can be called by Go APP and Java app both.  </p>
  
  <p>for some reason ,there's a cookie authentication and oAuth mechanism ,so I want to set one Go app as  Auth Micro-service for the authentication purpose.</p>
  
  <p>As GRPC is built on the HTTP2 ,so The headers and cookies are on the protocol.but I did not find out how to carry on header and cookie when the rpc occurs,implemented by Go, on GitHub I only found the JAVA-Implementation for headers at :</p>
  
  <pre><code>https://github.com/grpc/grpc-java/tree/master/examples/src/main/java/io/grpc/examples/header
  </code></pre>
  
  <p>Can anybody give me some direction of Go implementation for this purpose?</p>