From: Taha Jahangir <mtjahangir@gmail.com>
Date: Sun, 12 May 2013 18:16:13 +0000 (+0430)
Subject: Don't log EPIPE (broken pipe) errors as warnings
X-Git-Tag: v3.1.0~76^2~12^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F784%2Fhead;p=thirdparty%2Ftornado.git

Don't log EPIPE (broken pipe) errors as warnings

Broken pipe errors are usually caused by connection reset, and its better to not log EPIPE errors to minimize log spam
---

diff --git a/tornado/iostream.py b/tornado/iostream.py
index 1dfe06a68..8545fcf4a 100644
--- a/tornado/iostream.py
+++ b/tornado/iostream.py
@@ -547,8 +547,12 @@ class BaseIOStream(object):
                     self._write_buffer_frozen = True
                     break
                 else:
-                    gen_log.warning("Write error on %d: %s",
-                                    self.fileno(), e)
+                    if e.args[0] != errno.EPIPE:
+                        # Broken pipe errors are usually caused by connection
+                        # reset, and its better to not log EPIPE errors to
+                        # minimize log spam
+                        gen_log.warning("Write error on %d: %s",
+                                        self.fileno(), e)
                     self.close(exc_info=True)
                     return
         if not self._write_buffer and self._write_callback: