Make max_idle_timeout configurable

Add a new flag, doh_idle_timeout_ms, so as to configure the QUIC
transport parameter max_idle_timeout.

Like the other flags, the DnsResolver doesn't use the new timeout
immediately until either createNetworkCache() or destroyNetworkCache()
is called.

After the DnsResolver starts using the new timeout, the new timeout
will be applied to new networks. The existing networks will still use
the old timeout before users change private DNS settings.

Bug: 205922706
Test: cd packages/modules/DnsResolver && atest
Test: 1. Turned on mobile data and sent some DoH queries
      2. Set doh_idle_timeout_ms to 5000
      3. Turned on/off wifi to make the flag effective
      4. Checked that DnsResolve is using default timeout on the
         cellular network.
      5. Change private DNS settings
      6. Checked that DnsResolver started using 5000ms for new
         DoH connections on the cellular network.
Change-Id: I29997164067c190f6e1d07b5815e2170ef425ddb
17 files changed
tree: cdd9d1f78830af34a473708cc86b9ca6649bfa13
  1. aidl_api/
  2. apex/
  3. binder/
  4. doh/
  5. include/
  6. tests/
  7. .editorconfig
  8. Android.bp
  9. cbindgen.toml
  10. Dns64Configuration.cpp
  11. Dns64Configuration.h
  12. DnsProxyListener.cpp
  13. DnsProxyListener.h
  14. DnsQueryLog.cpp
  15. DnsQueryLog.h
  16. DnsQueryLogTest.cpp
  17. DnsResolver.cpp
  18. DnsResolver.h
  19. DnsResolverService.cpp
  20. DnsResolverService.h
  21. DnsStats.cpp
  22. DnsStats.h
  23. DnsStatsTest.cpp
  24. DnsTlsDispatcher.cpp
  25. DnsTlsDispatcher.h
  26. DnsTlsQueryMap.cpp
  27. DnsTlsQueryMap.h
  28. DnsTlsServer.cpp
  29. DnsTlsServer.h
  30. DnsTlsSessionCache.cpp
  31. DnsTlsSessionCache.h
  32. DnsTlsSocket.cpp
  33. DnsTlsSocket.h
  34. DnsTlsSocketFactory.h
  35. DnsTlsTransport.cpp
  36. DnsTlsTransport.h
  37. doh.h
  38. Experiments.cpp
  39. Experiments.h
  40. ExperimentsTest.cpp
  41. getaddrinfo.cpp
  42. getaddrinfo.h
  43. gethnamaddr.cpp
  44. gethnamaddr.h
  45. hostent.h
  46. IDnsTlsSocket.h
  47. IDnsTlsSocketFactory.h
  48. IDnsTlsSocketObserver.h
  49. IPrivateDnsServer.h
  50. libnetd_resolv.map.txt
  51. LockedQueue.h
  52. NOTICE
  53. OperationLimiter.h
  54. OperationLimiterTest.cpp
  55. OWNERS
  56. params.h
  57. PREUPLOAD.cfg
  58. PrivateDnsCommon.h
  59. PrivateDnsConfiguration.cpp
  60. PrivateDnsConfiguration.h
  61. PrivateDnsConfigurationTest.cpp
  62. PrivateDnsValidationObserver.h
  63. README-DoT.md
  64. README.md
  65. res_cache.cpp
  66. res_comp.cpp
  67. res_comp.h
  68. res_debug.cpp
  69. res_debug.h
  70. res_mkquery.cpp
  71. res_query.cpp
  72. res_send.cpp
  73. res_send.h
  74. res_stats.cpp
  75. resolv_cache.h
  76. resolv_private.h
  77. resolv_rust_test_config_template.xml
  78. resolv_test_config_template.xml
  79. ResolverController.cpp
  80. ResolverController.h
  81. ResolverEventReporter.cpp
  82. ResolverEventReporter.h
  83. ResolverStats.h
  84. sethostent.cpp
  85. stats.h
  86. stats.proto
  87. TEST_MAPPING
  88. util.cpp
  89. util.h
README.md

Logging

This code uses LOG(X) for logging. Log levels are VERBOSE,DEBUG,INFO,WARNING and ERROR. The default setting is WARNING and logs relate to WARNING and ERROR will be shown. If you want to enable the DEBUG level logs, using following command. adb shell service call dnsresolver 10 i32 1 VERBOSE 0 DEBUG 1 INFO 2 WARNING 3 ERROR 4 Verbose resolver logs could contain PII -- do NOT enable in production builds.