Added timout parameter to telnetlib.Telnet. Also created
test_telnetlib.py with a basic test and timeout ones.
Docs are also updated.
diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
index a13e85c..f4c01e4 100644
--- a/Lib/telnetlib.py
+++ b/Lib/telnetlib.py
@@ -184,7 +184,7 @@
"""
- def __init__(self, host=None, port=0):
+ def __init__(self, host=None, port=0, timeout=None):
"""Constructor.
When called without arguments, create an unconnected instance.
@@ -195,6 +195,7 @@
self.debuglevel = DEBUGLEVEL
self.host = host
self.port = port
+ self.timeout = timeout
self.sock = None
self.rawq = ''
self.irawq = 0
@@ -205,9 +206,9 @@
self.sbdataq = ''
self.option_callback = None
if host is not None:
- self.open(host, port)
+ self.open(host, port, timeout)
- def open(self, host, port=0):
+ def open(self, host, port=0, timeout=None):
"""Connect to a host.
The optional second argument is the port number, which
@@ -221,20 +222,9 @@
port = TELNET_PORT
self.host = host
self.port = port
- msg = "getaddrinfo returns an empty list"
- for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
- af, socktype, proto, canonname, sa = res
- try:
- self.sock = socket.socket(af, socktype, proto)
- self.sock.connect(sa)
- except socket.error, msg:
- if self.sock:
- self.sock.close()
- self.sock = None
- continue
- break
- if not self.sock:
- raise socket.error, msg
+ if timeout is not None:
+ self.timeout = timeout
+ self.sock = socket.create_connection((host, port), self.timeout)
def __del__(self):
"""Destructor -- close the connection."""
@@ -661,7 +651,7 @@
port = socket.getservbyname(portstr, 'tcp')
tn = Telnet()
tn.set_debuglevel(debuglevel)
- tn.open(host, port)
+ tn.open(host, port, timeout=0.5)
tn.interact()
tn.close()
diff --git a/Lib/test/test_telnetlib.py b/Lib/test/test_telnetlib.py
new file mode 100644
index 0000000..42ad20c
--- /dev/null
+++ b/Lib/test/test_telnetlib.py
@@ -0,0 +1,74 @@
+import socket
+import threading
+import telnetlib
+import time
+
+from unittest import TestCase
+from test import test_support
+
+
+def server(evt):
+ serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ serv.settimeout(3)
+ serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+ serv.bind(("", 9091))
+ serv.listen(5)
+ try:
+ conn, addr = serv.accept()
+ except socket.timeout:
+ pass
+ finally:
+ serv.close()
+ evt.set()
+
+class GeneralTests(TestCase):
+
+ def setUp(self):
+ self.evt = threading.Event()
+ threading.Thread(target=server, args=(self.evt,)).start()
+ time.sleep(.1)
+
+ def tearDown(self):
+ self.evt.wait()
+
+ def testBasic(self):
+ # connects
+ telnet = telnetlib.Telnet("localhost", 9091)
+ telnet.sock.close()
+
+ def testTimeoutDefault(self):
+ # default
+ telnet = telnetlib.Telnet("localhost", 9091)
+ self.assertTrue(telnet.sock.gettimeout() is None)
+ telnet.sock.close()
+
+ def testTimeoutValue(self):
+ # a value
+ telnet = telnetlib.Telnet("localhost", 9091, timeout=30)
+ self.assertEqual(telnet.sock.gettimeout(), 30)
+ telnet.sock.close()
+
+ def testTimeoutDifferentOrder(self):
+ telnet = telnetlib.Telnet(timeout=30)
+ telnet.open("localhost", 9091)
+ self.assertEqual(telnet.sock.gettimeout(), 30)
+ telnet.sock.close()
+
+ def testTimeoutNone(self):
+ # None, having other default
+ previous = socket.getdefaulttimeout()
+ socket.setdefaulttimeout(30)
+ try:
+ telnet = telnetlib.Telnet("localhost", 9091, timeout=None)
+ finally:
+ socket.setdefaulttimeout(previous)
+ self.assertEqual(telnet.sock.gettimeout(), 30)
+ telnet.sock.close()
+
+
+
+def test_main(verbose=None):
+ test_support.run_unittest(GeneralTests)
+
+if __name__ == '__main__':
+ test_main()