openstack/deb-python-eventlet
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5d99a00d1c480f59f45cfeb967d2de4da59f6ad7
deb-python-eventlet/tests/greenio_test.py
Eugene Oden 05ac779256 minor fix for GreenSocket.send(). added socket.timeout arguments. more tests. 
GreenSocket.send() wasn't blocking properly or raising a socket.timeout if the
send buffer is full.  added a call to trampoline()

added tests for several GreenSocket methods to check for proper socket.timeout
behavior

fixed a couple of other tests with changed behavior due to the send() fix.
2010-02-22 23:46:00 -05:00

524 lines
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Python
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from tests import LimitedTestCase, skip_with_pyevent, main
from eventlet import greenio
from eventlet import debug
from eventlet.green import socket
from eventlet.green.socket import GreenSSLObject
import errno
import eventlet
import os
import sys
import array
def bufsized(sock, size=1):
""" Resize both send and receive buffers on a socket.
Useful for testing trampoline. Returns the socket.
>>> import socket
>>> sock = bufsized(socket.socket(socket.AF_INET, socket.SOCK_STREAM))
"""
sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, size)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, size)
return sock
def min_buf_size():
"""Return the minimum buffer size that the platform supports."""
test_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
test_sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 1)
return test_sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF)
class TestGreenIo(LimitedTestCase):
def test_connect_timeout(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(0.1)
gs = greenio.GreenSocket(s)
try:
gs.connect(('192.0.2.1', 80))
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
except socket.error, e:
# unreachable is also a valid outcome
if e[0] != errno.EHOSTUNREACH:
raise
def test_accept_timeout(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 0))
s.listen(50)
s.settimeout(0.1)
gs = greenio.GreenSocket(s)
try:
gs.accept()
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
def test_connect_ex_timeout(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(0.1)
gs = greenio.GreenSocket(s)
e = gs.connect_ex(('192.0.2.1', 80))
self.assertEquals(e, errno.EAGAIN)
def test_recv_timeout(self):
listener = greenio.GreenSocket(socket.socket())
listener.bind(('', 0))
listener.listen(50)
def server():
# accept the connection in another greenlet
sock, addr = listener.accept()
eventlet.sleep(.2)
gt = eventlet.spawn(server)
addr = listener.getsockname()
client = greenio.GreenSocket(socket.socket())
client.settimeout(0.1)
client.connect(addr)
try:
r = client.recv(8192)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
gt.wait()
def test_recvfrom_timeout(self):
gs = greenio.GreenSocket(
socket.socket(socket.AF_INET, socket.SOCK_DGRAM))
gs.settimeout(.1)
gs.bind(('', 0))
try:
gs.recvfrom(8192)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
def test_recvfrom_into_timeout(self):
buf = buffer(array.array('B'))
gs = greenio.GreenSocket(
socket.socket(socket.AF_INET, socket.SOCK_DGRAM))
gs.settimeout(.1)
gs.bind(('', 0))
try:
gs.recvfrom_into(buf)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
def test_recv_into_timeout(self):
buf = buffer(array.array('B'))
listener = greenio.GreenSocket(socket.socket())
listener.bind(('', 0))
listener.listen(50)
def server():
# accept the connection in another greenlet
sock, addr = listener.accept()
eventlet.sleep(.2)
gt = eventlet.spawn(server)
addr = listener.getsockname()
client = greenio.GreenSocket(socket.socket())
client.settimeout(0.1)
client.connect(addr)
try:
r = client.recv_into(buf)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
gt.wait()
def test_send_timeout(self):
listener = greenio.GreenSocket(socket.socket())
listener.bind(('', 0))
listener.listen(50)
def server():
# accept the connection in another greenlet
sock, addr = listener.accept()
eventlet.sleep(.5)
gt = eventlet.spawn(server)
addr = listener.getsockname()
client = greenio.GreenSocket(socket.socket())
client.settimeout(0.1)
client.connect(addr)
try:
msg = "A"*(8*1024*1024)
# want to exceed the size of the OS buffer so it'll block
for x in range(10):
client.send(msg)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
gt.wait()
def test_sendall_timeout(self):
listener = greenio.GreenSocket(socket.socket())
listener.bind(('', 0))
listener.listen(50)
def server():
# accept the connection in another greenlet
sock, addr = listener.accept()
eventlet.sleep(.5)
gt = eventlet.spawn(server)
addr = listener.getsockname()
client = greenio.GreenSocket(socket.socket())
client.settimeout(0.1)
client.connect(addr)
try:
msg = "A"*(8*1024*1024)
# want to exceed the size of the OS buffer so it'll block
client.sendall(msg)
self.fail("socket.timeout not raised")
except socket.timeout, e:
self.assert_(hasattr(e, 'args'))
self.assertEqual(e.args[0], 'timed out')
gt.wait()
def test_close_with_makefile(self):
def accept_close_early(listener):
# verify that the makefile and the socket are truly independent
# by closing the socket prior to using the made file
try:
conn, addr = listener.accept()
fd = conn.makefile()
conn.close()
fd.write('hello\n')
fd.close()
# socket._fileobjects are odd: writes don't check
# whether the socket is closed or not, and you get an
# AttributeError during flush if it is closed
fd.write('a')
self.assertRaises(Exception, fd.flush)
self.assertRaises(socket.error, conn.send, 'b')
finally:
listener.close()
def accept_close_late(listener):
# verify that the makefile and the socket are truly independent
# by closing the made file and then sending a character
try:
conn, addr = listener.accept()
fd = conn.makefile()
fd.write('hello')
fd.close()
conn.send('\n')
conn.close()
fd.write('a')
self.assertRaises(Exception, fd.flush)
self.assertRaises(socket.error, conn.send, 'b')
finally:
listener.close()
def did_it_work(server):
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', server.getsockname()[1]))
fd = client.makefile()
client.close()
assert fd.readline() == 'hello\n'
assert fd.read() == ''
fd.close()
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
server.bind(('0.0.0.0', 0))
server.listen(50)
killer = eventlet.spawn(accept_close_early, server)
did_it_work(server)
killer.wait()
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
server.bind(('0.0.0.0', 0))
server.listen(50)
killer = eventlet.spawn(accept_close_late, server)
did_it_work(server)
killer.wait()
def test_del_closes_socket(self):
def accept_once(listener):
# delete/overwrite the original conn
# object, only keeping the file object around
# closing the file object should close everything
try:
conn, addr = listener.accept()
conn = conn.makefile()
conn.write('hello\n')
conn.close()
conn.write('a')
self.assertRaises(Exception, conn.flush)
finally:
listener.close()
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
server.bind(('127.0.0.1', 0))
server.listen(50)
killer = eventlet.spawn(accept_once, server)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', server.getsockname()[1]))
fd = client.makefile()
client.close()
assert fd.read() == 'hello\n'
assert fd.read() == ''
killer.wait()
def test_full_duplex(self):
large_data = '*' * 10 * min_buf_size()
listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listener.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
listener.bind(('127.0.0.1', 0))
listener.listen(50)
bufsized(listener)
def send_large(sock):
sock.sendall(large_data)
def read_large(sock):
result = sock.recv(len(large_data))
expected = 'hello world'
while len(result) < len(large_data):
result += sock.recv(len(large_data))
self.assertEquals(result, large_data)
def server():
(sock, addr) = listener.accept()
sock = bufsized(sock)
send_large_coro = eventlet.spawn(send_large, sock)
eventlet.sleep(0)
result = sock.recv(10)
expected = 'hello world'
while len(result) < len(expected):
result += sock.recv(10)
self.assertEquals(result, expected)
send_large_coro.wait()
server_evt = eventlet.spawn(server)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', listener.getsockname()[1]))
bufsized(client)
large_evt = eventlet.spawn(read_large, client)
eventlet.sleep(0)
client.sendall('hello world')
server_evt.wait()
large_evt.wait()
client.close()
def test_sendall(self):
# test adapted from Marcus Cavanaugh's email
# it may legitimately take a while, but will eventually complete
self.timer.cancel()
second_bytes = 10
def test_sendall_impl(many_bytes):
bufsize = max(many_bytes/15, 2)
def sender(listener):
(sock, addr) = listener.accept()
sock = bufsized(sock, size=bufsize)
sock.sendall('x'*many_bytes)
sock.sendall('y'*second_bytes)
listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listener.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
listener.bind(("", 0))
listener.listen(50)
sender_coro = eventlet.spawn(sender, listener)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', listener.getsockname()[1]))
bufsized(client, size=bufsize)
total = 0
while total < many_bytes:
data = client.recv(min(many_bytes - total, many_bytes/10))
if data == '':
break
total += len(data)
total2 = 0
while total < second_bytes:
data = client.recv(second_bytes)
if data == '':
break
total2 += len(data)
sender_coro.wait()
client.close()
for bytes in (1000, 10000, 100000, 1000000):
test_sendall_impl(bytes)
def test_wrap_socket(self):
try:
import ssl
except ImportError:
pass # pre-2.6
else:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
sock.bind(('127.0.0.1', 0))
sock.listen(50)
ssl_sock = ssl.wrap_socket(sock)
def test_timeout_and_final_write(self):
# This test verifies that a write on a socket that we've
# stopped listening for doesn't result in an incorrect switch
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
server.bind(('127.0.0.1', 0))
server.listen(50)
bound_port = server.getsockname()[1]
def sender(evt):
s2, addr = server.accept()
wrap_wfile = s2.makefile()
eventlet.sleep(0.02)
wrap_wfile.write('hi')
s2.close()
evt.send('sent via event')
from eventlet import event
evt = event.Event()
eventlet.spawn(sender, evt)
eventlet.sleep(0) # lets the socket enter accept mode, which
# is necessary for connect to succeed on windows
try:
# try and get some data off of this pipe
# but bail before any is sent
eventlet.Timeout(0.01)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', bound_port))
wrap_rfile = client.makefile()
_c = wrap_rfile.read(1)
self.fail()
except eventlet.TimeoutError:
pass
result = evt.wait()
self.assertEquals(result, 'sent via event')
server.close()
client.close()
def test_pipe_read(self):
# ensure that 'readline' works properly on GreenPipes when data is not
# immediately available (fd is nonblocking, was raising EAGAIN)
# also ensures that readline() terminates on '\n' and '\r\n'
r, w = os.pipe()
r = os.fdopen(r)
w = os.fdopen(w, 'w')
r = greenio.GreenPipe(r)
w = greenio.GreenPipe(w)
def writer():
eventlet.sleep(.1)
w.write('line\n')
w.flush()
w.write('line\r\n')
w.flush()
gt = eventlet.spawn(writer)
eventlet.sleep(0)
line = r.readline()
self.assertEquals(line, 'line\n')
line = r.readline()
self.assertEquals(line, 'line\r\n')
gt.wait()
class TestGreenIoLong(LimitedTestCase):
TEST_TIMEOUT=10 # the test here might take a while depending on the OS
@skip_with_pyevent
def test_multiple_readers(self):
recvsize = 2 * min_buf_size()
sendsize = 10 * recvsize
# test that we can have multiple coroutines reading
# from the same fd. We make no guarantees about which one gets which
# bytes, but they should both get at least some
def reader(sock, results):
while True:
data = sock.recv(recvsize)
if data == '':
break
results.append(data)
results1 = []
results2 = []
listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listener.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
listener.bind(('127.0.0.1', 0))
listener.listen(50)
def server():
(sock, addr) = listener.accept()
sock = bufsized(sock)
try:
c1 = eventlet.spawn(reader, sock, results1)
c2 = eventlet.spawn(reader, sock, results2)
c1.wait()
c2.wait()
finally:
c1.kill()
c2.kill()
sock.close()
server_coro = eventlet.spawn(server)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', listener.getsockname()[1]))
bufsized(client)
client.sendall('*' * sendsize)
client.close()
server_coro.wait()
listener.close()
self.assert_(len(results1) > 0)
self.assert_(len(results2) > 0)
if __name__ == '__main__':
main()
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