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# Tests for http/websocket.py
import base64
import os
import pytest
from aiohttp import web
from aiohttp.test_utils import make_mocked_request
def gen_ws_headers(
protocols="",
compress=0,
extension_text="",
server_notakeover=False,
client_notakeover=False,
):
key = base64.b64encode(os.urandom(16)).decode()
hdrs = [
("Upgrade", "websocket"),
("Connection", "upgrade"),
("Sec-Websocket-Version", "13"),
("Sec-Websocket-Key", key),
]
if protocols:
hdrs += [("Sec-Websocket-Protocol", protocols)]
if compress:
params = "permessage-deflate"
if compress < 15:
params += "; server_max_window_bits=" + str(compress)
if server_notakeover:
params += "; server_no_context_takeover"
if client_notakeover:
params += "; client_no_context_takeover"
if extension_text:
params += "; " + extension_text
hdrs += [("Sec-Websocket-Extensions", params)]
return hdrs, key
async def test_no_upgrade() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request("GET", "/")
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_no_connection() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request(
"GET", "/", headers={"Upgrade": "websocket", "Connection": "keep-alive"}
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_protocol_version_unset() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request(
"GET", "/", headers={"Upgrade": "websocket", "Connection": "upgrade"}
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_protocol_version_not_supported() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request(
"GET",
"/",
headers={
"Upgrade": "websocket",
"Connection": "upgrade",
"Sec-Websocket-Version": "1",
},
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_protocol_key_not_present() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request(
"GET",
"/",
headers={
"Upgrade": "websocket",
"Connection": "upgrade",
"Sec-Websocket-Version": "13",
},
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_protocol_key_invalid() -> None:
ws = web.WebSocketResponse()
req = make_mocked_request(
"GET",
"/",
headers={
"Upgrade": "websocket",
"Connection": "upgrade",
"Sec-Websocket-Version": "13",
"Sec-Websocket-Key": "123",
},
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_protocol_key_bad_size() -> None:
ws = web.WebSocketResponse()
sec_key = base64.b64encode(os.urandom(2))
val = sec_key.decode()
req = make_mocked_request(
"GET",
"/",
headers={
"Upgrade": "websocket",
"Connection": "upgrade",
"Sec-Websocket-Version": "13",
"Sec-Websocket-Key": val,
},
)
with pytest.raises(web.HTTPBadRequest):
await ws.prepare(req)
async def test_handshake_ok() -> None:
hdrs, sec_key = gen_ws_headers()
ws = web.WebSocketResponse()
req = make_mocked_request("GET", "/", headers=hdrs)
await ws.prepare(req)
assert ws.ws_protocol is None
async def test_handshake_protocol() -> None:
# Tests if one protocol is returned by handshake
proto = "chat"
ws = web.WebSocketResponse(protocols={"chat"})
req = make_mocked_request("GET", "/", headers=gen_ws_headers(proto)[0])
await ws.prepare(req)
assert ws.ws_protocol == proto
async def test_handshake_protocol_agreement() -> None:
# Tests if the right protocol is selected given multiple
best_proto = "worse_proto"
wanted_protos = ["best", "chat", "worse_proto"]
server_protos = "worse_proto,chat"
ws = web.WebSocketResponse(protocols=wanted_protos)
req = make_mocked_request("GET", "/", headers=gen_ws_headers(server_protos)[0])
await ws.prepare(req)
assert ws.ws_protocol == best_proto
async def test_handshake_protocol_unsupported(caplog) -> None:
# Tests if a protocol mismatch handshake warns and returns None
proto = "chat"
req = make_mocked_request("GET", "/", headers=gen_ws_headers("test")[0])
ws = web.WebSocketResponse(protocols=[proto])
await ws.prepare(req)
assert (
caplog.records[-1].msg
== "Client protocols %r don’t overlap server-known ones %r"
)
assert ws.ws_protocol is None
async def test_handshake_compress() -> None:
hdrs, sec_key = gen_ws_headers(compress=15)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
await ws.prepare(req)
assert ws.compress == 15
def test_handshake_compress_server_notakeover() -> None:
hdrs, sec_key = gen_ws_headers(compress=15, server_notakeover=True)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert compress == 15
assert notakeover is True
assert "Sec-Websocket-Extensions" in headers
assert headers["Sec-Websocket-Extensions"] == (
"permessage-deflate; server_no_context_takeover"
)
def test_handshake_compress_client_notakeover() -> None:
hdrs, sec_key = gen_ws_headers(compress=15, client_notakeover=True)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" in headers
assert headers["Sec-Websocket-Extensions"] == ("permessage-deflate"), hdrs
assert compress == 15
def test_handshake_compress_wbits() -> None:
hdrs, sec_key = gen_ws_headers(compress=9)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" in headers
assert headers["Sec-Websocket-Extensions"] == (
"permessage-deflate; server_max_window_bits=9"
)
assert compress == 9
def test_handshake_compress_wbits_error() -> None:
hdrs, sec_key = gen_ws_headers(compress=6)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" not in headers
assert compress == 0
def test_handshake_compress_bad_ext() -> None:
hdrs, sec_key = gen_ws_headers(compress=15, extension_text="bad")
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" not in headers
assert compress == 0
def test_handshake_compress_multi_ext_bad() -> None:
hdrs, sec_key = gen_ws_headers(
compress=15, extension_text="bad, permessage-deflate"
)
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" in headers
assert headers["Sec-Websocket-Extensions"] == "permessage-deflate"
def test_handshake_compress_multi_ext_wbits() -> None:
hdrs, sec_key = gen_ws_headers(compress=6, extension_text=", permessage-deflate")
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Sec-Websocket-Extensions" in headers
assert headers["Sec-Websocket-Extensions"] == "permessage-deflate"
assert compress == 15
def test_handshake_no_transfer_encoding() -> None:
hdrs, sec_key = gen_ws_headers()
req = make_mocked_request("GET", "/", headers=hdrs)
ws = web.WebSocketResponse()
headers, _, compress, notakeover = ws._handshake(req)
assert "Transfer-Encoding" not in headers
|
