From 3db5056db3334aef08e3a5d67ee12275791f1a3f Mon Sep 17 00:00:00 2001
From: Derek Bankieris <derek.r.bankieris@nasa.gov>
Date: Wed, 8 Feb 2017 08:32:23 -0600
Subject: [PATCH] Fix timeout error in VariableServer.fromPID

After calculating the remaining timeout, make sure it's still
non-negative.

Refs #365
---
 pymods/trick/variable_server.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pymods/trick/variable_server.py b/pymods/trick/variable_server.py
index 1915a83b..7511f3b6 100644
--- a/pymods/trick/variable_server.py
+++ b/pymods/trick/variable_server.py
@@ -1003,6 +1003,8 @@ def fromPID(pid, timeout=None):
     while True:
         if timeout is not None:
             timeout -= (time.time() - clock)
+            if timeout < 0:
+                raise socket.timeout
             clock = time.time()
             sock.settimeout(timeout)