def server():
io = SansIORW(encoding="utf-8")
version, one, auth_method = yield from io.read_struct("BBB")
assert (version, one, auth_method) == (5, 1, 0)
yield from io.write_struct("BB", 5, 0)
version, command, zero, address_type = yield from io.read_struct("4B")
assert (version, command, zero, address_type) == (5, 1, 0, 3)
domain = yield from io.read_pascal_string()
port = yield from io.read_struct("H")
assert (domain, port) == ("python.org", 666)
yield from io.write_struct("4B", 5, 0, 0, 1)
yield from io.write(b"\x00" * 4)
yield from io.write_struct("H", 0)
yield from io.passthrough()
def server():
io = SansIORW(encoding="utf-8")
version, one, auth_method = yield from io.read_struct("BBB")
assert version == 5
assert one == 1
assert auth_method == 2
yield from io.write_struct("BB", 5, 2)
auth_version = yield from io.read_struct("B")
assert auth_version == 1
username = yield from io.read_pascal_string()
password = yield from io.read_pascal_string()
assert username == "yoba"
assert password == "foo"
yield from io.write_struct("BB", 1, 1)
yield from io.passthrough()