On 2007-08-23, Dan Stromberg - Datallegro <[EMAIL PROTECTED]> wrote:
> On Thu, 23 Aug 2007 11:54:01 +0200, Hendrik van Rooyen wrote:
>
>>
>> While doing a netstring implementation I noticed that if you
>> build a record up using socket's recv(1), then when you close
>> the remote end down, the recv(1) hangs, despite having a short
>> time out of 0.1 set.
>>
>> If however, you try to receive more than one char, (I tested with 3,
>> did not try 2), then when you shut the remote end down you do not
>> get a time out, but an empty string - the normal end of file, I suppose.
>>
>> Has anybody else seen this behaviour?
>>
>> The transmit side seems to give a broken pipe error, which is fine.
>>
>> I am using stock standard SuSe 10, Python 2.4, out of the box.
>>
>> - Hendrik
>
> Are you using sock.settimeout()?
FWIW, I added a call to sock.setttimeout(0.2) to my example's
receive code and added 0.1 delays in the transmit code, and it
still seems to work fine:
-------------------------------8<-------------------------------------
#!/usr/bin/python
# writer
import socket,random,time
HOST = '' # Symbolic name meaning the local host
PORT = 8765 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
print 'Connected to',((HOST,PORT))
total = 0
for i in range(10):
data = "abcdefghijklmnopqrstuvwxyz"[:random.randint(1,20)]
total += len(data)
s.send(data)
print "tx:",len(data)
time.sleep(0.1)
s.close()
print total
-------------------------------8<-------------------------------------
#!/usr/bin/python
#reader
import socket
HOST = '' # Symbolic name meaning the local host
PORT = 8765 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
conn, addr = s.accept()
print 'Connected by', addr
conn.settimeout(0.2)
total = 0
while 1:
data = conn.recv(1)
total += len(data)
print "rx:",len(data)
if not data: break
conn.close()
print total
-------------------------------8<-------------------------------------
--
Grant Edwards grante Yow! We have DIFFERENT
at amounts of HAIR --
visi.com
--
http://mail.python.org/mailman/listinfo/python-list
