Use microsecond precision instead of second for connection timeout an…

…d connect-timeout

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Used new mapping endpoints classes [#1845](https://github.com/ruflin/Elastica/pull/1845)
 * Used new nodes endpoints classes [#1863](https://github.com/ruflin/Elastica/pull/1863)
 * Used new settings endpoints classes [#1852](https://github.com/ruflin/Elastica/pull/1852)
+* Allow float values for connection timeout and connection connect-timeout, providing ms precision for those. Previous precision was second. [#xxx](https://github.com/ruflin/Elastica/pull/xxx)
 ### Deprecated
 * Deprecated `Elastica\Aggregation\Range::setKeyedResponse()`, use `setKeyed()` instead [#1848](https://github.com/ruflin/Elastica/pull/1848)
 * Deprecated `Elastica\Exception\ResponseException::getElasticsearchException()`, use `getResponse()::getFullError()` instead [#1829](https://github.com/ruflin/Elastica/pull/1829)

src/Transport/Http.php

@@ -76,7 +76,14 @@ public function exec(Request $request, array $params): Response
         }
 
         \curl_setopt($conn, \CURLOPT_URL, $baseUri);
-        \curl_setopt($conn, \CURLOPT_TIMEOUT, $connection->getTimeout());
+
+        // If cURL >= 7.16.2, timeout can be expressed in ms
+        if (\defined('CURLOPT_TIMEOUT_MS')) {
+            \curl_setopt($conn, \CURLOPT_TIMEOUT_MS, \round($connection->getTimeout() * 1000));
+        } else {
+            \curl_setopt($conn, \CURLOPT_TIMEOUT, \round($connection->getTimeout()));
+        }
+
         \curl_setopt($conn, \CURLOPT_FORBID_REUSE, 0);
 
         // Tell ES that we support the compressed responses
@@ -87,7 +94,16 @@ public function exec(Request $request, array $params): Response
         /* @see Connection::setConnectTimeout() */
         $connectTimeout = $connection->getConnectTimeout();
         if ($connectTimeout > 0) {
-            \curl_setopt($conn, \CURLOPT_CONNECTTIMEOUT, $connectTimeout);
+            // If cURL >= 7.16.2, timeout can be expressed in ms
+            if (\defined('CURLOPT_CONNECTTIMEOUT_MS')) {
+                // since we're accepting float, and the option uses an int, let's round and use a
+                // minimum value of "1" for the option. "0" means "no timeout"
+                \curl_setopt($conn, \CURLOPT_CONNECTTIMEOUT_MS, \max(1, \round($connectTimeout * 1000)));
+            } else {
+                // since we're accepting float, and the option uses an int, let's round and use a
+                // minimum value of "1" for the option. "0" means "no timeout"
+                \curl_setopt($conn, \CURLOPT_CONNECTTIMEOUT, \max(1, \round($connectTimeout)));
+            }
         }
 
         if (null !== $proxy = $connection->getProxy()) {