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client: share connect between cli and mobile#475

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refact-client-connect
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client: share connect between cli and mobile#475
kp-antonio-yang wants to merge 5 commits into
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refact-client-connect

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Description

Motivation and Context

How Has This Been Tested?

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • The correct base branch is being used, if not main

- LightwayConnection -> MobileConnection
- ClientConnection -> CliConnection
Both the CLI path (connect) and mobile path (lightway_client_connect)
were duplicating TLS context construction, connection building, and
keepalive wiring. Extract that logic into a single pub(crate) establish()
function that returns a Connect<T> struct bundling the live connection,
keepalive handle, keepalive task/config, event stream, ticker task, and
PMTUD timer task.

Platform-specific builder tweaks are injected via two closures:
- customize_ctx: called after cipher/plugins are set, before .build()
- customize_conn: called after .with_auth()/.with_event_cb(), before .connect()

Both call sites are updated to call establish() and destructure Connect<T>,
removing ~60 lines of duplicated setup code. Unused imports in the mobile
module are cleaned up as a result.
Rename CliConnection (non-mobile path) to ClientConnection behind
to ClientConnection behind #[cfg(feature = "mobile")], giving both
paths a single consistent name while keeping their distinct field sets.

Add two feature-gated Connect::into_client_connect() methods as a
clean constructor API for callers that work with an intact Connect
value:
- non-mobile: takes task, inside_io, outside_io (desktop-gated),
  connected_signal, stop_signal, network_change_signal, and
  encoding_request_signal; contributes conn from self
- mobile (Connect<Option<Arc<Tun>>>): takes outside_io_task,
  new_outside_io_sender, join_set, instance_id, and
  expresslane_event_rx; contributes conn, keepalive, keepalive_task,
  and keepalive_config from self
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Code coverage summary for a55e71f:

Filename                                                          Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
lightway-app-utils/src/args/cipher.rs                                   5                 5     0.00%           1                 1     0.00%           5                 5     0.00%           0                 0         -
lightway-app-utils/src/args/connection_type.rs                         11                 5    54.55%           3                 1    66.67%          11                 5    54.55%           0                 0         -
lightway-app-utils/src/args/duration.rs                               121                22    81.82%          11                 5    54.55%          64                15    76.56%           0                 0         -
lightway-app-utils/src/args/ip_map.rs                                  27                27     0.00%           5                 5     0.00%          19                19     0.00%           0                 0         -
lightway-app-utils/src/args/keyshare.rs                                 5                 5     0.00%           1                 1     0.00%           5                 5     0.00%           0                 0         -
lightway-app-utils/src/args/logging.rs                                 37                37     0.00%           3                 3     0.00%          31                31     0.00%           0                 0         -
lightway-app-utils/src/args/nonzero_duration.rs                       128                24    81.25%          10                 4    60.00%          68                16    76.47%           0                 0         -
lightway-app-utils/src/connection_ticker.rs                           229                17    92.58%          28                 4    85.71%         126                15    88.10%           0                 0         -
lightway-app-utils/src/dplpmtud_timer.rs                              209                13    93.78%          22                 4    81.82%         117                11    90.60%           0                 0         -
lightway-app-utils/src/event_stream.rs                                 19                 0   100.00%           3                 0   100.00%          11                 0   100.00%           0                 0         -
lightway-app-utils/src/metrics.rs                                       4                 4     0.00%           2                 2     0.00%           4                 4     0.00%           0                 0         -
lightway-app-utils/src/network_change_monitor.rs                      158                72    54.43%          13                 6    53.85%          93                49    47.31%           0                 0         -
lightway-app-utils/src/packet_codec.rs                                  2                 2     0.00%           1                 1     0.00%           1                 1     0.00%           0                 0         -
lightway-app-utils/src/sockopt/ip_mtu_discover.rs                      81                81     0.00%           6                 6     0.00%          72                72     0.00%           0                 0         -
lightway-app-utils/src/sockopt/ip_pktinfo.rs                           14                 1    92.86%           1                 0   100.00%          16                 1    93.75%           0                 0         -
lightway-app-utils/src/tun.rs                                         377               377     0.00%          38                38     0.00%         239               239     0.00%           0                 0         -
lightway-app-utils/src/utils.rs                                        21                21     0.00%           1                 1     0.00%          11                11     0.00%           0                 0         -
lightway-client/src/config.rs                                         397               105    73.55%          20                 8    60.00%         266                67    74.81%           0                 0         -
lightway-client/src/dns_manager.rs                                     18                18     0.00%           4                 4     0.00%          16                16     0.00%           0                 0         -
lightway-client/src/io/inside/tun.rs                                   82                82     0.00%          12                12     0.00%          60                60     0.00%           0                 0         -
lightway-client/src/io/outside.rs                                      14                14     0.00%           2                 2     0.00%          12                12     0.00%           0                 0         -
lightway-client/src/io/outside/tcp.rs                                  92                92     0.00%          13                13     0.00%          59                59     0.00%           0                 0         -
lightway-client/src/io/outside/udp.rs                                 170               170     0.00%          18                18     0.00%         111               111     0.00%           0                 0         -
lightway-client/src/io/outside/udp/batch_receive.rs                    99                13    86.87%          11                 1    90.91%          84                13    84.52%           0                 0         -
lightway-client/src/keepalive.rs                                      615                44    92.85%          55                 6    89.09%         330                25    92.42%           0                 0         -
lightway-client/src/lib.rs                                           1467               891    39.26%         111                62    44.14%        1044               698    33.14%           0                 0         -
lightway-client/src/main.rs                                           277               277     0.00%          17                17     0.00%         157               157     0.00%           0                 0         -
lightway-client/src/platform/linux/dns_manager.rs                     118                91    22.88%          14                 9    35.71%          87                62    28.74%           0                 0         -
lightway-client/src/platform/linux/dns_manager/direct_file.rs         106                42    60.38%          12                 6    50.00%          65                29    55.38%           0                 0         -
lightway-client/src/platform/linux/dns_manager/resolvconf.rs           61                61     0.00%           8                 8     0.00%          52                52     0.00%           0                 0         -
lightway-client/src/platform/linux/dns_manager/resolvectl.rs           41                41     0.00%           5                 5     0.00%          34                34     0.00%           0                 0         -
lightway-client/src/route_manager.rs                                 1148               166    85.54%          75                 6    92.00%         636                84    86.79%           0                 0         -
lightway-core/src/borrowed_bytesmut.rs                                373                 0   100.00%          24                 0   100.00%         185                 0   100.00%           0                 0         -
lightway-core/src/builder_predicates.rs                                24                12    50.00%           4                 2    50.00%          24                12    50.00%           0                 0         -
lightway-core/src/cipher.rs                                            13                 0   100.00%           2                 0   100.00%          10                 0   100.00%           0                 0         -
lightway-core/src/connection.rs                                      1815               963    46.94%          74                29    60.81%        1289               657    49.03%           0                 0         -
lightway-core/src/connection/builders.rs                              252                46    81.75%          22                 8    63.64%         260                53    79.62%           0                 0         -
lightway-core/src/connection/dplpmtud.rs                             1741                81    95.35%          63                 0   100.00%         830                 7    99.16%           0                 0         -
lightway-core/src/connection/expresslane.rs                            27                11    59.26%           4                 1    75.00%          36                 7    80.56%           0                 0         -
lightway-core/src/connection/fragment_map.rs                          366                 6    98.36%          25                 0   100.00%         254                 3    98.82%           0                 0         -
lightway-core/src/connection/io_adapter.rs                            877               149    83.01%          55                 8    85.45%         467                95    79.66%           0                 0         -
lightway-core/src/connection/key_update.rs                             34                13    61.76%           5                 0   100.00%          38                19    50.00%           0                 0         -
lightway-core/src/context.rs                                          214                51    76.17%          28                11    60.71%         235                64    72.77%           0                 0         -
lightway-core/src/context/ip_pool.rs                                    8                 3    62.50%           1                 0   100.00%           5                 0   100.00%           0                 0         -
lightway-core/src/context/server_auth.rs                               37                37     0.00%           4                 4     0.00%          26                26     0.00%           0                 0         -
lightway-core/src/encoding_request_states.rs                            3                 0   100.00%           1                 0   100.00%           3                 0   100.00%           0                 0         -
lightway-core/src/gso.rs                                              900               143    84.11%          29                 6    79.31%         424                92    78.30%           0                 0         -
lightway-core/src/io.rs                                                10                10     0.00%           3                 3     0.00%           9                 9     0.00%           0                 0         -
lightway-core/src/keyshare.rs                                           5                 0   100.00%           1                 0   100.00%           5                 0   100.00%           0                 0         -
lightway-core/src/lib.rs                                                9                 0   100.00%           3                 0   100.00%           9                 0   100.00%           0                 0         -
lightway-core/src/metrics.rs                                           81                71    12.35%          33                29    12.12%          73                63    13.70%           0                 0         -
lightway-core/src/packet.rs                                            38                10    73.68%           4                 1    75.00%          30                 6    80.00%           0                 0         -
lightway-core/src/plugin.rs                                           307                17    94.46%          22                 4    81.82%         148                10    93.24%           0                 0         -
lightway-core/src/tls/mod.rs                                            4                 4     0.00%           1                 1     0.00%           3                 3     0.00%           0                 0         -
lightway-core/src/utils.rs                                            341                28    91.79%          24                 3    87.50%         170                18    89.41%           0                 0         -
lightway-core/src/version.rs                                           93                 0   100.00%          17                 0   100.00%          82                 0   100.00%           0                 0         -
lightway-core/src/wire.rs                                             438                42    90.41%          29                 1    96.55%         235                12    94.89%           0                 0         -
lightway-core/src/wire/auth_failure.rs                                 27                 1    96.30%           3                 0   100.00%          17                 0   100.00%           0                 0         -
lightway-core/src/wire/auth_request.rs                                684                57    91.67%          34                 1    97.06%         351                24    93.16%           0                 0         -
lightway-core/src/wire/auth_success_with_config_ipv4.rs               222                 3    98.65%          11                 0   100.00%         124                 0   100.00%           0                 0         -
lightway-core/src/wire/data.rs                                         51                 1    98.04%           5                 0   100.00%          33                 0   100.00%           0                 0         -
lightway-core/src/wire/data_frag.rs                                   127                 1    99.21%          14                 0   100.00%          80                 0   100.00%           0                 0         -
lightway-core/src/wire/encoding_request.rs                             82                 2    97.56%           6                 0   100.00%          42                 1    97.62%           0                 0         -
lightway-core/src/wire/encoding_response.rs                            82                 2    97.56%           6                 0   100.00%          42                 1    97.62%           0                 0         -
lightway-core/src/wire/expresslane_config.rs                          192                 1    99.48%          10                 0   100.00%         110                 0   100.00%           0                 0         -
lightway-core/src/wire/expresslane_data.rs                           1332                70    94.74%          48                 5    89.58%         681                38    94.42%           0                 0         -
lightway-core/src/wire/ping.rs                                         95                 2    97.89%           7                 0   100.00%          59                 0   100.00%           0                 0         -
lightway-core/src/wire/pong.rs                                        109                 2    98.17%           8                 0   100.00%          72                 0   100.00%           0                 0         -
lightway-core/src/wire/server_config.rs                                69                 2    97.10%           4                 0   100.00%          37                 0   100.00%           0                 0         -
lightway-server/src/auth.rs                                           273                49    82.05%          22                 6    72.73%         171                28    83.63%           0                 0         -
lightway-server/src/config.rs                                          64                 0   100.00%           5                 0   100.00%          72                 0   100.00%           0                 0         -
lightway-server/src/connection.rs                                     137               137     0.00%          11                11     0.00%         110               110     0.00%           0                 0         -
lightway-server/src/connection_manager.rs                             339               339     0.00%          40                40     0.00%         294               294     0.00%           0                 0         -
lightway-server/src/connection_manager/connection_map.rs              407                16    96.07%          21                 1    95.24%         228                 7    96.93%           0                 0         -
lightway-server/src/io/inside.rs                                       47                 9    80.85%          11                 4    63.64%          34                 8    76.47%           0                 0         -
lightway-server/src/io/inside/tun.rs                                   52                52     0.00%          11                11     0.00%          37                37     0.00%           0                 0         -
lightway-server/src/io/outside/tcp.rs                                  93                93     0.00%          10                10     0.00%          68                68     0.00%           0                 0         -
lightway-server/src/io/outside/udp.rs                                 458               458     0.00%          25                25     0.00%         317               317     0.00%           0                 0         -
lightway-server/src/io/outside/udp/batch_receive.rs                   467                19    95.93%          20                 1    95.00%         265                15    94.34%           0                 0         -
lightway-server/src/io/outside/udp/cmsg.rs                            208                48    76.92%          16                 3    81.25%         171                43    74.85%           0                 0         -
lightway-server/src/ip_manager.rs                                     542                50    90.77%          22                 4    81.82%         242                23    90.50%           0                 0         -
lightway-server/src/ip_manager/ip_pool.rs                             545                 0   100.00%          28                 0   100.00%         257                 0   100.00%           0                 0         -
lightway-server/src/lib.rs                                            433               433     0.00%          19                19     0.00%         292               292     0.00%           0                 0         -
lightway-server/src/main.rs                                           201               201     0.00%          10                10     0.00%          96                96     0.00%           0                 0         -
lightway-server/src/metrics.rs                                        254               250     1.57%          85                83     2.35%         215               211     1.86%           0                 0         -
lightway-server/src/statistics.rs                                     132                59    55.30%           8                 4    50.00%          90                39    56.67%           0                 0         -
uniffi-bindgen/src/uniffi-bindgen.rs                                    3                 3     0.00%           1                 1     0.00%           3                 3     0.00%           0                 0         -
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                                               21890              6877    68.58%        1525               609    60.07%       13366              4789    64.17%           0                 0         -

✅ Region coverage 68% passes
✅ Line coverage 64% passes

When cross-compiling from a desktop host to a mobile target, the
`desktop` cfg alias would incorrectly match. Added `not(feature="mobile")`
guard so the alias only resolves for actual desktop client builds.
@kp-antonio-yang
kp-antonio-yang force-pushed the refact-client-connect branch from 1e76468 to d00f7a0 Compare July 23, 2026 01:53
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