New submission from kai zhu <[email protected]>:
i'm working on an independent py2to3 utility which directly imports py2x
modules, by reverse compiling ast trees
(code.google.com/p/asciiporn/source/browse/stable.py)
while forward porting the python2x redis client, this issue came up.
i kno its bad to use strings in sockets, but it seems webapps use it exploiting
the fact utf8 is becoming a defacto web 'binary' standard
$ python3.1 echo.py
connected <socket.socket object, fd=4, family=2, type=1, proto=0> ('127.0.0.1',
41115)
$ python3.1 client.py
b'hello\r\n' recv()
b'hello\r\n' makefile(mode = "rb")
'hello\n' makefile(mode = "r")
## echo.py - echo server program
import socket
serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
serv.bind(('localhost', 12345))
serv.listen(1)
while True:
conn, addr = serv.accept()
print( 'connected', conn, addr )
while True:
data = conn.recv(4096)
if not data:
conn.close()
break
conn.send(data)
finally:
serv.close()
## client.py - client program
data = b'hello\r\n'
import socket
clie = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
clie.connect(('localhost', 12345))
clie.send(data)
data = clie.recv(4096)
print(repr(data), 'recv()')
clie.send(data)
file = clie.makefile('rb')
data = file.readline()
print(repr(data), 'makefile(mode = "rb")')
clie.send(data)
file = clie.makefile('r')
data = file.readline()
print(repr(data), 'makefile(mode = "r")') ## '\r' is silently dropped
finally:
clie.close()
----------
components: 2to3 (2.x to 3.0 conversion tool), IO, Library (Lib), Unicode
messages: 118095
nosy: kaizhu
priority: normal
severity: normal
status: open
title: socket.makefile(mode = 'r').readline() silently removes carriage return
type: behavior
versions: Python 3.1, Python 3.2
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Python tracker <[email protected]>
<http://bugs.python.org/issue10041>
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