Method sendHeaders

api/src/main/java/io/grpc/ServerCall.java:130–130

Send response header metadata prior to sending a response message. This method may only be called once and cannot be called after calls to #sendMessage or #close. Since Metadata is not thread-safe, the caller must not access (read or write) headers after this poin

(Metadata headers)

   *     headers have already been sent
   */
  public abstract void sendHeaders(Metadata headers);

  /**
   * Send a response message. Messages are the primary form of communication associated with