Fix timeouts for reading from sockets with newer PHP 8.1 builds

Author: thekid

ChangeLog.md

@@ -5,6 +5,8 @@ Networking changelog
 
 ## 10.2.1 / 2021-06-03
 
+* Fixed timeouts for reading from sockets with newer PHP 8.1 builds
+  (@thekid)
 * Fixed floating point values for `Socket::setTimeout()` - @thekid
 * Fixed warning *Declaration of AsyncServer::listen($socket, $protocol)
   should be compatible* in PHP 7.0, 7.1 and 7.2

src/main/php/peer/Socket.class.php

@@ -313,7 +313,12 @@ public function readBinary($maxLen= 4096) {
 
     $res= fread($this->_sock, $maxLen);
     if (false === $res || null === $res) {
-      $e= new SocketException('Read of '.$maxLen.' bytes failed: '.$this->getLastError());
+      $m= stream_get_meta_data($this->_sock);
+      if ($m['timed_out']) {
+        $e= new SocketTimeoutException('Read of '.$maxLen.' bytes failed: '.$this->getLastError(), $this->_timeout);
+      } else {
+        $e= new SocketException('Read of '.$maxLen.' bytes failed: '.$this->getLastError());
+      }
       \xp::gc(__FILE__);
       throw $e;
     } else if ('' === $res) {