Bugs item #1705393, was opened at 2007-04-22 13:38
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Category: Python Library
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Ron Garret (rongarret)
Assigned to: Nobody/Anonymous (nobody)
Summary: Select() failure (race condition)
Initial Comment:
select.select fails on file-like objects created by socket.makefile when data
exists in the file buffer but not in the underlying socket.
Here is code to reproduce the bug. Run it, then point a web browser at port
8080 and observer that select times out indicating that no input is available
even though input is still in fact available.
=======
from SocketServer import *
from socket import *
from select import select
class myHandler(StreamRequestHandler):
def handle(self):
while 1:
sl = select([self.rfile],[],[],1)[0]
print sl
l = self.rfile.readline()
if len(l)<3: break
print l,
pass
print>>self.wfile, 'HTTP/1.0 200 OK'
print>>self.wfile, 'Content-type: text/plain'
print>>self.wfile
print>>self.wfile, 'foo'
server = TCPServer(('',8080), myHandler)
server.serve_forever()
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1705393&group_id=5470
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