--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/conncache.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,87 @@
+#ifndef HEADER_CURL_CONNCACHE_H
+#define HEADER_CURL_CONNCACHE_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2015 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2014, Linus Nielsen Feltzing, <linus@haxx.se>
+ *
+ * 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.
+ *
+ ***************************************************************************/
+
+/*
+ * All accesses to struct fields and changing of data in the connection cache
+ * and connectbundles must be done with the conncache LOCKED. The cache might
+ * be shared.
+ */
+
+struct conncache {
+  struct curl_hash hash;
+  size_t num_conn;
+  long next_connection_id;
+  struct curltime last_cleanup;
+  /* handle used for closing cached connections */
+  struct Curl_easy *closure_handle;
+};
+
+#define BUNDLE_NO_MULTIUSE -1
+#define BUNDLE_UNKNOWN     0  /* initial value */
+#define BUNDLE_MULTIPLEX   2
+
+struct connectbundle {
+  int multiuse;                 /* supports multi-use */
+  size_t num_connections;       /* Number of connections in the bundle */
+  struct curl_llist conn_list;  /* The connectdata members of the bundle */
+};
+
+/* returns 1 on error, 0 is fine */
+int Curl_conncache_init(struct conncache *, int size);
+void Curl_conncache_destroy(struct conncache *connc);
+
+/* return the correct bundle, to a host or a proxy */
+struct connectbundle *Curl_conncache_find_bundle(struct connectdata *conn,
+                                                 struct conncache *connc,
+                                                 const char **hostp);
+void Curl_conncache_unlock(struct Curl_easy *data);
+/* returns number of connections currently held in the connection cache */
+size_t Curl_conncache_size(struct Curl_easy *data);
+size_t Curl_conncache_bundle_size(struct connectdata *conn);
+
+bool Curl_conncache_return_conn(struct connectdata *conn);
+CURLcode Curl_conncache_add_conn(struct conncache *connc,
+                                 struct connectdata *conn) WARN_UNUSED_RESULT;
+void Curl_conncache_remove_conn(struct Curl_easy *data,
+                                struct connectdata *conn,
+                                bool lock);
+bool Curl_conncache_foreach(struct Curl_easy *data,
+                            struct conncache *connc,
+                            void *param,
+                            int (*func)(struct connectdata *conn,
+                                        void *param));
+
+struct connectdata *
+Curl_conncache_find_first_connection(struct conncache *connc);
+
+struct connectdata *
+Curl_conncache_extract_bundle(struct Curl_easy *data,
+                              struct connectbundle *bundle);
+struct connectdata *
+Curl_conncache_extract_oldest(struct Curl_easy *data);
+void Curl_conncache_close_all_connections(struct conncache *connc);
+void Curl_conncache_print(struct conncache *connc);
+
+#endif /* HEADER_CURL_CONNCACHE_H */