cloudflare/cloudflared
Publicmirrored fromhttps://github.com/cloudflare/cloudflaredAvailable
component-tests/test_proxy_dns.py
72lines · modecode
| 1 | #!/usr/bin/env python |
| 2 | import socket |
| 3 | from time import sleep |
| 4 | |
| 5 | import constants |
| 6 | from conftest import CfdModes |
| 7 | from util import start_cloudflared, wait_tunnel_ready, check_tunnel_not_connected |
| 8 | |
| 9 | |
| 10 | # Sanity checks that test that we only run Proxy DNS and Tunnel when we really expect them to be there. |
| 11 | class TestProxyDns: |
| 12 | def test_proxy_dns_with_named_tunnel(self, tmp_path, component_tests_config): |
| 13 | run_test_scenario(tmp_path, component_tests_config, CfdModes.NAMED, run_proxy_dns=True) |
| 14 | |
| 15 | def test_proxy_dns_with_classic_tunnel(self, tmp_path, component_tests_config): |
| 16 | run_test_scenario(tmp_path, component_tests_config, CfdModes.CLASSIC, run_proxy_dns=True) |
| 17 | |
| 18 | def test_proxy_dns_alone(self, tmp_path, component_tests_config): |
| 19 | run_test_scenario(tmp_path, component_tests_config, CfdModes.PROXY_DNS, run_proxy_dns=True) |
| 20 | |
| 21 | def test_named_tunnel_alone(self, tmp_path, component_tests_config): |
| 22 | run_test_scenario(tmp_path, component_tests_config, CfdModes.NAMED, run_proxy_dns=False) |
| 23 | |
| 24 | def test_classic_tunnel_alone(self, tmp_path, component_tests_config): |
| 25 | run_test_scenario(tmp_path, component_tests_config, CfdModes.CLASSIC, run_proxy_dns=False) |
| 26 | |
| 27 | |
| 28 | def run_test_scenario(tmp_path, component_tests_config, cfd_mode, run_proxy_dns): |
| 29 | expect_proxy_dns = run_proxy_dns |
| 30 | expect_tunnel = False |
| 31 | |
| 32 | if cfd_mode == CfdModes.NAMED: |
| 33 | expect_tunnel = True |
| 34 | pre_args = ["tunnel"] |
| 35 | args = ["run"] |
| 36 | elif cfd_mode == CfdModes.CLASSIC: |
| 37 | expect_tunnel = True |
| 38 | pre_args = [] |
| 39 | args = [] |
| 40 | elif cfd_mode == CfdModes.PROXY_DNS: |
| 41 | expect_proxy_dns = True |
| 42 | pre_args = [] |
| 43 | args = ["proxy-dns", "--port", str(constants.PROXY_DNS_PORT)] |
| 44 | else: |
| 45 | assert False, f"Unknown cfd_mode {cfd_mode}" |
| 46 | |
| 47 | config = component_tests_config(cfd_mode=cfd_mode, run_proxy_dns=run_proxy_dns) |
| 48 | with start_cloudflared(tmp_path, config, cfd_pre_args=pre_args, cfd_args=args, new_process=True, capture_output=False): |
| 49 | if expect_tunnel: |
| 50 | wait_tunnel_ready() |
| 51 | else: |
| 52 | check_tunnel_not_connected() |
| 53 | verify_proxy_dns(expect_proxy_dns) |
| 54 | |
| 55 | |
| 56 | def verify_proxy_dns(should_be_running): |
| 57 | # Wait for the Proxy DNS listener to come up. |
| 58 | sleep(constants.BACKOFF_SECS) |
| 59 | had_failure = False |
| 60 | sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
| 61 | try: |
| 62 | sock.connect(('localhost', constants.PROXY_DNS_PORT)) |
| 63 | sock.send(b"anything") |
| 64 | except: |
| 65 | if should_be_running: |
| 66 | assert False, "Expected Proxy DNS to be running, but it was not." |
| 67 | had_failure = True |
| 68 | finally: |
| 69 | sock.close() |
| 70 | |
| 71 | if not should_be_running and not had_failure: |
| 72 | assert False, "Proxy DNS should not have been running, but it was." |
| 73 | |