[tarantool-patches] [PATCH v1 1/1] box: fix custom delimiter for telnet connection

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

Because test-run uses a console connection to run tests, the
actual string delimiter was the user-specified delimiter
delim + "\n".
Since telnet sends \r\n on line break, the updated expression
delim + "\n"could not be found in a sequence data+delim+"\r\n",
so delimiter feature did not work at all.
Added delim + "\r" check along with delim + "\n", that solves the
described problem and does not violate backward compatibility.

Closes #2027

https://github.com/tarantool/tarantool/tree/kshch/gh-2027-telnet-alternative-delimiter
https://github.com/tarantool/tarantool/issues/2027
---
 src/box/lua/console.lua | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/box/lua/console.lua b/src/box/lua/console.lua
index 028001127..bdedcb393 100644
--- a/src/box/lua/console.lua
+++ b/src/box/lua/console.lua
@@ -344,8 +344,9 @@ end
 -- Read command from connected client console.listen()
 --
 local function client_read(self)
-    local delim = self.delimiter .. "\n"
-    local buf = self.client:read(delim)
+    local delim_lf = self.delimiter .. "\n"
+    local delim_cr = self.delimiter .. "\r"
+    local buf = self.client:read({delimiter = {delim_lf, delim_cr}})
     if buf == nil then
         return nil
     elseif buf == "" then
@@ -355,7 +356,7 @@ local function client_read(self)
         return nil
     end
     -- remove trailing delimiter
-    return buf:sub(1, -#delim-1)
+    return buf:sub(1, -#delim_lf-1)
 end
 
 --
-- 
2.20.1