handle connection loss when responding to web requests

Author: Richard Jones

CHANGES.txt

@@ -4,6 +4,7 @@ are given with the most recent entry first.
 2006-??-?? 1.1.3
 Feature:
 - full timezone support (sf patch 1465296)
+- handle connection loss when responding to web requests
 
 
 2006-04-27 1.1.2

roundup/cgi/client.py

@@ -1,12 +1,12 @@
-# $Id: client.py,v 1.225 2006-04-27 04:03:11 richard Exp $
+# $Id: client.py,v 1.226 2006-06-06 01:44:44 richard Exp $
 
 """WWW request handler (also used in the stand-alone server).
 """
 __docformat__ = 'restructuredtext'
 
 import base64, binascii, cgi, codecs, mimetypes, os
 import random, re, rfc822, stat, time, urllib, urlparse
-import Cookie
+import Cookie, socket, errno
 
 from roundup import roundupdb, date, hyperdb, password
 from roundup.cgi import templating, cgitb, TranslationService
@@ -821,7 +821,12 @@ def write(self, content):
         if not self.headers_done:
             self.header()
         if self.env['REQUEST_METHOD'] != 'HEAD':
-            self.request.wfile.write(content)
+            try:
+                self.request.wfile.write(content)
+            except socket.error, error:
+                # the end-user has gone away
+                if error.errno != errno.EPIPE:
+                    raise
 
     def write_html(self, content):
         if not self.headers_done:
@@ -840,7 +845,12 @@ def write_html(self, content):
             content = content.encode(self.charset, 'xmlcharrefreplace')
 
         # and write
-        self.request.wfile.write(content)
+        try:
+            self.request.wfile.write(content)
+        except socket.error, error:
+            # the end-user has gone away
+            if error.errno != errno.EPIPE:
+                raise
 
     def setHeader(self, header, value):
         '''Override a header to be returned to the user's browser.