Save ping+beacon test status in temporary directory.

LayoutTests/http/tests/navigation/resources/check-beacon.php

Index: LayoutTests/http/tests/navigation/resources/check-beacon.php
diff --git a/LayoutTests/http/tests/navigation/resources/check-beacon.php b/LayoutTests/http/tests/navigation/resources/check-beacon.php
index 0fadda190d02741e4c97da04fa8cb3caaf6ffa90..9b42b96672311573eb3e85c40ae336a42c145479 100644
--- a/LayoutTests/http/tests/navigation/resources/check-beacon.php
+++ b/LayoutTests/http/tests/navigation/resources/check-beacon.php
@@ -1,6 +1,10 @@
 <?php
-$beaconFilename = "beacon" . (isset($_REQUEST['name']) ? $_REQUEST['name'] : "") . ".txt";
-$retries = isset($_REQUEST['retries']) ? (int)$_REQUEST['retries'] : -1;
+require_once '../../resources/portabilityLayer.php';
+
+$beaconFilename = sys_get_temp_dir() . "/beacon" . (isset($_REQUEST['name']) ? $_REQUEST['name'] : "") . ".txt";
+
+$max_attempts = 700;
+$retries = isset($_REQUEST['retries']) ? (int)$_REQUEST['retries'] : $max_attempts;
 while (!file_exists($beaconFilename) && $retries != 0) {
     usleep(10000);
     # file_exists() caches results, we want to invalidate the cache.
@@ -11,15 +15,22 @@ while (!file_exists($beaconFilename) && $retries != 0) {
 header('Content-Type: text/plain');
 header('Access-Control-Allow-Origin: *');
 if (file_exists($beaconFilename)) {
-    echo "Beacon sent successfully\n";
-    $beaconFile = fopen($beaconFilename, 'r');
-    while ($line = fgets($beaconFile)) {
-        $trimmed = trim($line);
-        if ($trimmed != "")
-            echo "$trimmed\n";
+    $beaconFile = false;
+    if (is_readable($beaconFilename)) {
+        $beaconFile = fopen($beaconFilename, 'r');
+    }
+    if ($beaconFile) {
+        echo "Beacon sent successfully\n";
+        while ($line = fgets($beaconFile)) {
+            $trimmed = trim($line);
+            if ($trimmed != "")
+                echo "$trimmed\n";
+        }
+        fclose($beaconFile);
+        unlink($beaconFilename);
+    } else {
+        echo "Beacon status not readable\n";
     }
-    fclose($beaconFile);
-    unlink($beaconFilename);
 } else {
     echo "Beacon not sent\n";
 }