http2: receive and log the received header frames

  return nread;

}

/* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */

static int got_header(nghttp2_session *session, const nghttp2_frame *frame,

                      const uint8_t *name, size_t namelen,

                      const uint8_t *value, size_t valuelen,

                      void *userp)

{

  struct connectdata *conn = (struct connectdata *)userp;

  (void)session;

  (void)frame;

  if(namelen + valuelen < 200) {

    char buffer[256];

    memcpy(buffer, name, namelen);

    buffer[namelen]=':';

    memcpy(&buffer[namelen+1], value, valuelen);

    buffer[namelen + valuelen + 1]=0;

    infof(conn->data, "Got '%s'\n", buffer);

    /* TODO: the headers need to be passed to the http parser */

  }

  else {

    infof(conn->data, "Got header with no name or too long\n",

          namelen, name, valuelen, value);

  }

  return 0; /* 0 is successful */

}

/*

 * This is all callbacks nghttp2 calls

 */

static const nghttp2_session_callbacks callbacks = {

  send_callback,

  recv_callback,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL,

  NULL

  send_callback, /* nghttp2_send_callback */

  recv_callback, /* nghttp2_recv_callback */

  NULL,          /* nghttp2_on_frame_recv_callback */

  NULL,          /* nghttp2_on_invalid_frame_recv_callback */

  NULL,          /* nghttp2_on_data_chunk_recv_callback */

  NULL,          /* nghttp2_before_frame_send_callback */

  NULL,          /* nghttp2_on_frame_send_callback */

  NULL,          /* nghttp2_on_frame_not_send_callback */

  NULL,          /* nghttp2_on_stream_close_callback */

  NULL,          /* nghttp2_on_unknown_frame_recv_callback */

  NULL,          /* nghttp2_on_begin_headers_callback */

  got_header     /* nghttp2_on_header_callback */

};

/*