From 7606f81279fc9cc4622963c85d5dbaea6a1d9156 Mon Sep 17 00:00:00 2001
From: Moritz Kornher <moritz@prefer.co.nz>
Date: Wed, 14 Jun 2017 11:56:50 +1200
Subject: [PATCH] Add new mode READ_NEXT to only ready the next packet from the
 channel.

---
 phpseclib/Net/SSH2.php | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 7a5e88a4..0e2333af 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -122,6 +122,10 @@ define('NET_SSH2_LOG_REALTIME', 3);
  * Dumps the content real-time to a file
  */
 define('NET_SSH2_LOG_REALTIME_FILE', 4);
+/**
+ * Make sure that the log never gets larger than this
+ */
+define('NET_SSH2_LOG_MAX_SIZE', 1024 * 1024);
 /**#@-*/
 
 /**#@+
@@ -137,9 +141,9 @@ define('NET_SSH2_READ_SIMPLE',  1);
  */
 define('NET_SSH2_READ_REGEX', 2);
 /**
- * Make sure that the log never gets larger than this
+ * Returns when a string matching the regular expression $expect is found
  */
-define('NET_SSH2_LOG_MAX_SIZE', 1024 * 1024);
+define('NET_SSH2_READ_NEXT', 3);
 /**#@-*/
 
 /**
@@ -2914,6 +2918,10 @@ class Net_SSH2
 
         $channel = $this->_get_interactive_channel();
 
+        if ($mode == NET_SSH2_READ_NEXT) {
+            return $this->_get_channel_packet($channel);
+        }
+
         $match = $expect;
         while (true) {
             if ($mode == NET_SSH2_READ_REGEX) {