text: #ifndef HEADER_CURL_VQUIC_NGTCP2_H
  #define HEADER_CURL_VQUIC_NGTCP2_H
  /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
   *
   * This software is licensed as described in the file COPYING, which
   * you should have received as part of this distribution. The terms
   * are also available at https://curl.haxx.se/docs/copyright.html.
   *
   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   * copies of the Software, and permit persons to whom the Software is
   * furnished to do so, under the terms of the COPYING file.
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   * KIND, either express or implied.
   *
   ***************************************************************************/
  
  #include "curl_setup.h"
  
  #ifdef USE_NGTCP2
  
  #include <ngtcp2/ngtcp2.h>
  #include <nghttp3/nghttp3.h>
  #ifdef USE_OPENSSL
  #include <openssl/ssl.h>
  #elif defined(USE_GNUTLS)
  #include <gnutls/gnutls.h>
  #endif
  
  struct quic_handshake {
    char *buf;       /* pointer to the buffer */
    size_t alloclen; /* size of allocation */
    size_t len;      /* size of content in buffer */
    size_t nread;    /* how many bytes have been read */
  };
  
  struct quicsocket {
    struct connectdata *conn; /* point back to the connection */
    ngtcp2_conn *qconn;
    ngtcp2_cid dcid;
    ngtcp2_cid scid;
    uint32_t version;
    ngtcp2_settings settings;
  #ifdef USE_OPENSSL
    SSL_CTX *sslctx;
    SSL *ssl;
  #elif defined(USE_GNUTLS)
    gnutls_certificate_credentials_t cred;
    gnutls_session_t ssl;
  #endif
    struct quic_handshake crypto_data[3];
    /* the last TLS alert description generated by the local endpoint */
    uint8_t tls_alert;
    struct sockaddr_storage local_addr;
    socklen_t local_addrlen;
  
    nghttp3_conn *h3conn;
    nghttp3_conn_settings h3settings;
  };
  
  #include "urldata.h"
  
  #endif
  
  #endif /* HEADER_CURL_VQUIC_NGTCP2_H */
  