--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/http2.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,80 @@
+#ifndef HEADER_CURL_HTTP2_H
+#define HEADER_CURL_HTTP2_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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_NGHTTP2
+#include "http.h"
+
+/* value for MAX_CONCURRENT_STREAMS we use until we get an updated setting
+   from the peer */
+#define DEFAULT_MAX_CONCURRENT_STREAMS 13
+
+/*
+ * Store nghttp2 version info in this buffer, Prefix with a space.  Return
+ * total length written.
+ */
+int Curl_http2_ver(char *p, size_t len);
+
+const char *Curl_http2_strerror(uint32_t err);
+
+CURLcode Curl_http2_init(struct connectdata *conn);
+void Curl_http2_init_state(struct UrlState *state);
+void Curl_http2_init_userset(struct UserDefined *set);
+CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
+                                    struct connectdata *conn);
+CURLcode Curl_http2_setup(struct connectdata *conn);
+CURLcode Curl_http2_switched(struct connectdata *conn,
+                             const char *data, size_t nread);
+/* called from http_setup_conn */
+void Curl_http2_setup_conn(struct connectdata *conn);
+void Curl_http2_setup_req(struct Curl_easy *data);
+void Curl_http2_done(struct connectdata *conn, bool premature);
+CURLcode Curl_http2_done_sending(struct connectdata *conn);
+CURLcode Curl_http2_add_child(struct Curl_easy *parent,
+                              struct Curl_easy *child,
+                              bool exclusive);
+void Curl_http2_remove_child(struct Curl_easy *parent,
+                             struct Curl_easy *child);
+void Curl_http2_cleanup_dependencies(struct Curl_easy *data);
+
+/* returns true if the HTTP/2 stream error was HTTP_1_1_REQUIRED */
+bool Curl_h2_http_1_1_error(struct connectdata *conn);
+#else /* USE_NGHTTP2 */
+#define Curl_http2_request_upgrade(x,y) CURLE_UNSUPPORTED_PROTOCOL
+#define Curl_http2_setup(x) CURLE_UNSUPPORTED_PROTOCOL
+#define Curl_http2_switched(x,y,z) CURLE_UNSUPPORTED_PROTOCOL
+#define Curl_http2_setup_conn(x) Curl_nop_stmt
+#define Curl_http2_setup_req(x)
+#define Curl_http2_init_state(x)
+#define Curl_http2_init_userset(x)
+#define Curl_http2_done(x,y)
+#define Curl_http2_done_sending(x)
+#define Curl_http2_add_child(x, y, z)
+#define Curl_http2_remove_child(x, y)
+#define Curl_http2_cleanup_dependencies(x)
+#define Curl_h2_http_1_1_error(x) 0
+#endif
+
+#endif /* HEADER_CURL_HTTP2_H */