[Feature][ZXW-88]merge P50 version

Only Configure: No
Affected branch: master
Affected module: unknown
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I34667719d9e0e7e29e8e4368848601cde0a48408
diff --git a/ap/lib/libcurl/curl-7.86.0/docs/examples/headerapi.c b/ap/lib/libcurl/curl-7.86.0/docs/examples/headerapi.c
new file mode 100755
index 0000000..58c8586
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.86.0/docs/examples/headerapi.c
@@ -0,0 +1,81 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, 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.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.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+/* <DESC>
+ * Extract headers post transfer with the header API
+ * </DESC>
+ */
+#include <stdio.h>
+#include <curl/curl.h>
+
+static size_t write_cb(char *data, size_t n, size_t l, void *userp)
+{
+  /* take care of the data here, ignored in this example */
+  (void)data;
+  (void)userp;
+  return n*l;
+}
+
+int main(void)
+{
+  CURL *curl;
+
+  curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    struct curl_header *header;
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    /* example.com is redirected, so we tell libcurl to follow redirection */
+    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+
+    /* this example just ignores the content */
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
+
+    /* Perform the request, res will get the return code */
+    res = curl_easy_perform(curl);
+    /* Check for errors */
+    if(res != CURLE_OK)
+      fprintf(stderr, "curl_easy_perform() failed: %s\n",
+              curl_easy_strerror(res));
+
+    if(CURLHE_OK == curl_easy_header(curl, "Content-Type", 0, CURLH_HEADER,
+                                     -1, &header))
+      printf("Got content-type: %s\n", header->value);
+
+    printf("All server headers:\n");
+    {
+      struct curl_header *h;
+      struct curl_header *prev = NULL;
+      do {
+        h = curl_easy_nextheader(curl, CURLH_HEADER, -1, prev);
+        if(h)
+          printf(" %s: %s (%u)\n", h->name, h->value, (int)h->amount);
+        prev = h;
+      } while(h);
+
+    }
+    /* always cleanup */
+    curl_easy_cleanup(curl);
+  }
+  return 0;
+}