Merge branch '1.x'

src/Monolog/Handler/SlackHandler.php

@@ -144,6 +144,17 @@ class SlackHandler extends SocketHandler
     protected function write(array $record)
     {
         parent::write($record);
+        $this->finalizeWrite();
+    }
+
+    /**
+     * Finalizes the request by reading some bytes and then closing the socket
+     *
+     * If we do not read some but close the socket too early, slack sometimes
+     * drops the request entirely.
+     */
+    protected function finalizeWrite()
+    {
         $res = $this->getResource();
         if (is_resource($res)) {
             @fread($res, 2048);