cpython/Lib/test/test_httplib.py

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import httplib
import StringIO
import socket
from unittest import TestCase
from test import test_support
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- Issue #2550: The approach used by client/server code for obtaining ports to listen on in network-oriented tests has been refined in an effort to facilitate running multiple instances of the entire regression test suite in parallel without issue. test_support.bind_port() has been fixed such that it will always return a unique port -- which wasn't always the case with the previous implementation, especially if socket options had been set that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The new implementation of bind_port() will actually raise an exception if it is passed an AF_INET/SOCK_STREAM socket with either the SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on the socket it's been passed. This currently only applies to Windows. This option prevents any other sockets from binding to the host/port we've bound to, thus removing the possibility of the 'non-deterministic' behaviour, as Microsoft puts it, that occurs when a second SOCK_STREAM socket binds and accepts to a host/port that's already been bound by another socket. The optional preferred port parameter to bind_port() has been removed. Under no circumstances should tests be hard coding ports! test_support.find_unused_port() has also been introduced, which will pass a temporary socket object to bind_port() in order to obtain an unused port. The temporary socket object is then closed and deleted, and the port is returned. This method should only be used for obtaining an unused port in order to pass to an external program (i.e. the -accept [port] argument to openssl's s_server mode) or as a parameter to a server-oriented class that doesn't give you direct access to the underlying socket used. Finally, test_support.HOST has been introduced, which should be used for the host argument of any relevant socket calls (i.e. bind and connect). The following tests were updated to following the new conventions: test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib, test_poplib, test_ftplib, test_telnetlib, test_socketserver, test_asynchat and test_socket_ssl. It is now possible for multiple instances of the regression test suite to run in parallel without issue.
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HOST = test_support.HOST
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class FakeSocket:
def __init__(self, text, fileclass=StringIO.StringIO):
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self.text = text
self.fileclass = fileclass
self.data = ''
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def sendall(self, data):
self.data += data
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def makefile(self, mode, bufsize=None):
if mode != 'r' and mode != 'rb':
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raise httplib.UnimplementedFileMode()
return self.fileclass(self.text)
class NoEOFStringIO(StringIO.StringIO):
"""Like StringIO, but raises AssertionError on EOF.
This is used below to test that httplib doesn't try to read
more from the underlying file than it should.
"""
def read(self, n=-1):
data = StringIO.StringIO.read(self, n)
if data == '':
raise AssertionError('caller tried to read past EOF')
return data
def readline(self, length=None):
data = StringIO.StringIO.readline(self, length)
if data == '':
raise AssertionError('caller tried to read past EOF')
return data
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class HeaderTests(TestCase):
def test_auto_headers(self):
# Some headers are added automatically, but should not be added by
# .request() if they are explicitly set.
import httplib
class HeaderCountingBuffer(list):
def __init__(self):
self.count = {}
def append(self, item):
kv = item.split(':')
if len(kv) > 1:
# item is a 'Key: Value' header string
lcKey = kv[0].lower()
self.count.setdefault(lcKey, 0)
self.count[lcKey] += 1
list.append(self, item)
for explicit_header in True, False:
for header in 'Content-length', 'Host', 'Accept-encoding':
conn = httplib.HTTPConnection('example.com')
conn.sock = FakeSocket('blahblahblah')
conn._buffer = HeaderCountingBuffer()
body = 'spamspamspam'
headers = {}
if explicit_header:
headers[header] = str(len(body))
conn.request('POST', '/', body, headers)
self.assertEqual(conn._buffer.count[header.lower()], 1)
class BasicTest(TestCase):
def test_status_lines(self):
# Test HTTP status lines
body = "HTTP/1.1 200 Ok\r\n\r\nText"
sock = FakeSocket(body)
resp = httplib.HTTPResponse(sock)
resp.begin()
self.assertEqual(resp.read(), 'Text')
self.assertTrue(resp.isclosed())
body = "HTTP/1.1 400.100 Not Ok\r\n\r\nText"
sock = FakeSocket(body)
resp = httplib.HTTPResponse(sock)
self.assertRaises(httplib.BadStatusLine, resp.begin)
def test_partial_reads(self):
# if we have a lenght, the system knows when to close itself
# same behaviour than when we read the whole thing with read()
body = "HTTP/1.1 200 Ok\r\nContent-Length: 4\r\n\r\nText"
sock = FakeSocket(body)
resp = httplib.HTTPResponse(sock)
resp.begin()
self.assertEqual(resp.read(2), 'Te')
self.assertFalse(resp.isclosed())
self.assertEqual(resp.read(2), 'xt')
self.assertTrue(resp.isclosed())
def test_host_port(self):
# Check invalid host_port
for hp in ("www.python.org:abc", "www.python.org:"):
self.assertRaises(httplib.InvalidURL, httplib.HTTP, hp)
for hp, h, p in (("[fe80::207:e9ff:fe9b]:8000", "fe80::207:e9ff:fe9b", 8000),
("www.python.org:80", "www.python.org", 80),
("www.python.org", "www.python.org", 80),
("[fe80::207:e9ff:fe9b]", "fe80::207:e9ff:fe9b", 80)):
http = httplib.HTTP(hp)
c = http._conn
if h != c.host: self.fail("Host incorrectly parsed: %s != %s" % (h, c.host))
if p != c.port: self.fail("Port incorrectly parsed: %s != %s" % (p, c.host))
def test_response_headers(self):
# test response with multiple message headers with the same field name.
text = ('HTTP/1.1 200 OK\r\n'
'Set-Cookie: Customer="WILE_E_COYOTE"; Version="1"; Path="/acme"\r\n'
'Set-Cookie: Part_Number="Rocket_Launcher_0001"; Version="1";'
' Path="/acme"\r\n'
'\r\n'
'No body\r\n')
hdr = ('Customer="WILE_E_COYOTE"; Version="1"; Path="/acme"'
', '
'Part_Number="Rocket_Launcher_0001"; Version="1"; Path="/acme"')
s = FakeSocket(text)
r = httplib.HTTPResponse(s)
r.begin()
cookies = r.getheader("Set-Cookie")
if cookies != hdr:
self.fail("multiple headers not combined properly")
def test_read_head(self):
# Test that the library doesn't attempt to read any data
# from a HEAD request. (Tickles SF bug #622042.)
sock = FakeSocket(
'HTTP/1.1 200 OK\r\n'
'Content-Length: 14432\r\n'
'\r\n',
NoEOFStringIO)
resp = httplib.HTTPResponse(sock, method="HEAD")
resp.begin()
if resp.read() != "":
self.fail("Did not expect response from HEAD request")
def test_send_file(self):
expected = 'GET /foo HTTP/1.1\r\nHost: example.com\r\n' \
'Accept-Encoding: identity\r\nContent-Length:'
body = open(__file__, 'rb')
conn = httplib.HTTPConnection('example.com')
sock = FakeSocket(body)
conn.sock = sock
conn.request('GET', '/foo', body)
self.assertTrue(sock.data.startswith(expected))
def test_chunked(self):
chunked_start = (
'HTTP/1.1 200 OK\r\n'
'Transfer-Encoding: chunked\r\n\r\n'
'a\r\n'
'hello worl\r\n'
'1\r\n'
'd\r\n'
)
sock = FakeSocket(chunked_start + '0\r\n')
resp = httplib.HTTPResponse(sock, method="GET")
resp.begin()
self.assertEquals(resp.read(), 'hello world')
resp.close()
for x in ('', 'foo\r\n'):
sock = FakeSocket(chunked_start + x)
resp = httplib.HTTPResponse(sock, method="GET")
resp.begin()
try:
resp.read()
except httplib.IncompleteRead, i:
self.assertEquals(i.partial, 'hello world')
else:
self.fail('IncompleteRead expected')
finally:
resp.close()
def test_negative_content_length(self):
sock = FakeSocket('HTTP/1.1 200 OK\r\nContent-Length: -1\r\n\r\nHello\r\n')
resp = httplib.HTTPResponse(sock, method="GET")
resp.begin()
self.assertEquals(resp.read(), 'Hello\r\n')
resp.close()
class OfflineTest(TestCase):
def test_responses(self):
self.assertEquals(httplib.responses[httplib.NOT_FOUND], "Not Found")
class TimeoutTest(TestCase):
- Issue #2550: The approach used by client/server code for obtaining ports to listen on in network-oriented tests has been refined in an effort to facilitate running multiple instances of the entire regression test suite in parallel without issue. test_support.bind_port() has been fixed such that it will always return a unique port -- which wasn't always the case with the previous implementation, especially if socket options had been set that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The new implementation of bind_port() will actually raise an exception if it is passed an AF_INET/SOCK_STREAM socket with either the SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on the socket it's been passed. This currently only applies to Windows. This option prevents any other sockets from binding to the host/port we've bound to, thus removing the possibility of the 'non-deterministic' behaviour, as Microsoft puts it, that occurs when a second SOCK_STREAM socket binds and accepts to a host/port that's already been bound by another socket. The optional preferred port parameter to bind_port() has been removed. Under no circumstances should tests be hard coding ports! test_support.find_unused_port() has also been introduced, which will pass a temporary socket object to bind_port() in order to obtain an unused port. The temporary socket object is then closed and deleted, and the port is returned. This method should only be used for obtaining an unused port in order to pass to an external program (i.e. the -accept [port] argument to openssl's s_server mode) or as a parameter to a server-oriented class that doesn't give you direct access to the underlying socket used. Finally, test_support.HOST has been introduced, which should be used for the host argument of any relevant socket calls (i.e. bind and connect). The following tests were updated to following the new conventions: test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib, test_poplib, test_ftplib, test_telnetlib, test_socketserver, test_asynchat and test_socket_ssl. It is now possible for multiple instances of the regression test suite to run in parallel without issue.
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PORT = None
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
TimeoutTest.PORT = test_support.bind_port(self.serv)
self.serv.listen(5)
def tearDown(self):
self.serv.close()
self.serv = None
def testTimeoutAttribute(self):
'''This will prove that the timeout gets through
HTTPConnection and into the socket.
'''
# default
httpConn = httplib.HTTPConnection(HOST, TimeoutTest.PORT)
httpConn.connect()
self.assertTrue(httpConn.sock.gettimeout() is None)
httpConn.close()
# a value
httpConn = httplib.HTTPConnection(HOST, TimeoutTest.PORT, timeout=30)
httpConn.connect()
self.assertEqual(httpConn.sock.gettimeout(), 30)
httpConn.close()
# None, having other default
previous = socket.getdefaulttimeout()
socket.setdefaulttimeout(30)
try:
httpConn = httplib.HTTPConnection(HOST, TimeoutTest.PORT,
timeout=None)
httpConn.connect()
finally:
socket.setdefaulttimeout(previous)
self.assertEqual(httpConn.sock.gettimeout(), 30)
httpConn.close()
class HTTPSTimeoutTest(TestCase):
# XXX Here should be tests for HTTPS, there isn't any right now!
def test_attributes(self):
# simple test to check it's storing it
if hasattr(httplib, 'HTTPSConnection'):
- Issue #2550: The approach used by client/server code for obtaining ports to listen on in network-oriented tests has been refined in an effort to facilitate running multiple instances of the entire regression test suite in parallel without issue. test_support.bind_port() has been fixed such that it will always return a unique port -- which wasn't always the case with the previous implementation, especially if socket options had been set that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The new implementation of bind_port() will actually raise an exception if it is passed an AF_INET/SOCK_STREAM socket with either the SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on the socket it's been passed. This currently only applies to Windows. This option prevents any other sockets from binding to the host/port we've bound to, thus removing the possibility of the 'non-deterministic' behaviour, as Microsoft puts it, that occurs when a second SOCK_STREAM socket binds and accepts to a host/port that's already been bound by another socket. The optional preferred port parameter to bind_port() has been removed. Under no circumstances should tests be hard coding ports! test_support.find_unused_port() has also been introduced, which will pass a temporary socket object to bind_port() in order to obtain an unused port. The temporary socket object is then closed and deleted, and the port is returned. This method should only be used for obtaining an unused port in order to pass to an external program (i.e. the -accept [port] argument to openssl's s_server mode) or as a parameter to a server-oriented class that doesn't give you direct access to the underlying socket used. Finally, test_support.HOST has been introduced, which should be used for the host argument of any relevant socket calls (i.e. bind and connect). The following tests were updated to following the new conventions: test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib, test_poplib, test_ftplib, test_telnetlib, test_socketserver, test_asynchat and test_socket_ssl. It is now possible for multiple instances of the regression test suite to run in parallel without issue.
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h = httplib.HTTPSConnection(HOST, TimeoutTest.PORT, timeout=30)
self.assertEqual(h.timeout, 30)
def test_main(verbose=None):
- Issue #2550: The approach used by client/server code for obtaining ports to listen on in network-oriented tests has been refined in an effort to facilitate running multiple instances of the entire regression test suite in parallel without issue. test_support.bind_port() has been fixed such that it will always return a unique port -- which wasn't always the case with the previous implementation, especially if socket options had been set that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The new implementation of bind_port() will actually raise an exception if it is passed an AF_INET/SOCK_STREAM socket with either the SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on the socket it's been passed. This currently only applies to Windows. This option prevents any other sockets from binding to the host/port we've bound to, thus removing the possibility of the 'non-deterministic' behaviour, as Microsoft puts it, that occurs when a second SOCK_STREAM socket binds and accepts to a host/port that's already been bound by another socket. The optional preferred port parameter to bind_port() has been removed. Under no circumstances should tests be hard coding ports! test_support.find_unused_port() has also been introduced, which will pass a temporary socket object to bind_port() in order to obtain an unused port. The temporary socket object is then closed and deleted, and the port is returned. This method should only be used for obtaining an unused port in order to pass to an external program (i.e. the -accept [port] argument to openssl's s_server mode) or as a parameter to a server-oriented class that doesn't give you direct access to the underlying socket used. Finally, test_support.HOST has been introduced, which should be used for the host argument of any relevant socket calls (i.e. bind and connect). The following tests were updated to following the new conventions: test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib, test_poplib, test_ftplib, test_telnetlib, test_socketserver, test_asynchat and test_socket_ssl. It is now possible for multiple instances of the regression test suite to run in parallel without issue.
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test_support.run_unittest(HeaderTests, OfflineTest, BasicTest, TimeoutTest,
HTTPSTimeoutTest)
if __name__ == '__main__':
test_main()