[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/tests/unit/unit1606.c b/ap/lib/libcurl/curl-7.86.0/tests/unit/unit1606.c
new file mode 100755
index 0000000..0519b7c
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.86.0/tests/unit/unit1606.c
@@ -0,0 +1,93 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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
+ *
+ ***************************************************************************/
+#include "curlcheck.h"
+
+#include "speedcheck.h"
+#include "urldata.h"
+
+static CURL *easy;
+
+static CURLcode unit_setup(void)
+{
+  CURLcode res = CURLE_OK;
+
+  global_init(CURL_GLOBAL_ALL);
+  easy = curl_easy_init();
+  if(!easy) {
+    curl_global_cleanup();
+    return CURLE_OUT_OF_MEMORY;
+  }
+  return res;
+}
+
+static void unit_stop(void)
+{
+  curl_easy_cleanup(easy);
+  curl_global_cleanup();
+}
+
+static int runawhile(long time_limit,
+                     long speed_limit,
+                     curl_off_t speed,
+                     int dec)
+{
+  int counter = 1;
+  struct curltime now = {1, 0};
+  CURLcode result;
+  int finaltime;
+
+  curl_easy_setopt(easy, CURLOPT_LOW_SPEED_LIMIT, speed_limit);
+  curl_easy_setopt(easy, CURLOPT_LOW_SPEED_TIME, time_limit);
+  Curl_speedinit(easy);
+
+  do {
+    /* fake the current transfer speed */
+    easy->progress.current_speed = speed;
+    result = Curl_speedcheck(easy, now);
+    if(result)
+      break;
+    /* step the time */
+    now.tv_sec = ++counter;
+    speed -= dec;
+  } while(counter < 100);
+
+  finaltime = (int)(now.tv_sec - 1);
+
+  return finaltime;
+}
+
+UNITTEST_START
+  fail_unless(runawhile(41, 41, 40, 0) == 41,
+              "wrong low speed timeout");
+  fail_unless(runawhile(21, 21, 20, 0) == 21,
+              "wrong low speed timeout");
+  fail_unless(runawhile(60, 60, 40, 0) == 60,
+              "wrong log speed timeout");
+  fail_unless(runawhile(50, 50, 40, 0) == 50,
+              "wrong log speed timeout");
+  fail_unless(runawhile(40, 40, 40, 0) == 99,
+              "should not time out");
+  fail_unless(runawhile(10, 50, 100, 2) == 36,
+              "bad timeout");
+UNITTEST_STOP