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+#ifndef HEADER_CURL_VQUIC_NGTCP2_H
+#define HEADER_CURL_VQUIC_NGTCP2_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2021, Daniel Stenberg, <[email protected]>, 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.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;
+  ngtcp2_transport_params transport_params;
+#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_settings h3settings;
+  int qlogfd;
+};
+
+#include "urldata.h"
+
+#endif
+
+#endif /* HEADER_CURL_VQUIC_NGTCP2_H */