Method additionalHeaders

lib/internal/http2/core.js:3193–3228

(headers)

  // a 1xx informational code and it MUST be sent before the request/response
  // headers are sent, or an error will be thrown.
  additionalHeaders(headers) {
    if (this.destroyed || this.closed)
      throw new ERR_HTTP2_INVALID_STREAM();
    if (this.headersSent)
      throw new ERR_HTTP2_HEADERS_AFTER_RESPOND();

    assertIsObject(headers, 'headers');
    headers = ObjectAssign({ __proto__: null }, headers);

    debugStreamObj(this, 'sending additional headers');

    if (headers[HTTP2_HEADER_STATUS] != null) {
      const statusCode = headers[HTTP2_HEADER_STATUS] |= 0;
      if (statusCode === HTTP_STATUS_SWITCHING_PROTOCOLS)
        throw new ERR_HTTP2_STATUS_101();
      if (statusCode < 100 || statusCode >= 200) {
        throw new ERR_HTTP2_INVALID_INFO_STATUS(headers[HTTP2_HEADER_STATUS]);
      }
    }

    this[kUpdateTimer]();

    const headersList = buildNgHeaderString(
      headers,
      assertValidPseudoHeaderResponse,
      this.session[kStrictSingleValueFields],
    );
    if (!this[kInfoHeaders])
      this[kInfoHeaders] = [headers];
    else
      this[kInfoHeaders].push(headers);

    const ret = this[kHandle].info(headersList);
    if (ret < 0)
      this.destroy(new NghttpError(ret));
  }
}

ServerHttp2Stream.prototype[kProceed] = ServerHttp2Stream.prototype.respond;