Fix the socket never reconnecting after a transient connectivity drop - #6662
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NetworkStateProvider only notifies listeners when its cached flag changes, but ChatSocket concluded "no network" from the live isConnected() read without the provider ever learning. The cached value stayed true, so the network coming back was not seen as a transition and listeners were never told, leaving the socket offline for the lifetime of the process. Record the result of every direct read, and route the "all networks lost" branch of onLost through the same writer so it cannot desync either. Also drop NET_CAPABILITY_VALIDATED from the check. It reports whether the platform's connectivity probe passed, not whether a socket can be opened, so captive portals and revalidating networks read as a hard outage.
The state stopped the health monitor without scheduling a replacement and declared no transition for Event.Resume, so it could only be left if a network callback arrived. One missed callback stranded the socket until the process was killed. Keep a backed-off retry armed and restart the connection on resume, matching Disconnected.Stopped. The existing state machine test pinned the old behaviour, asserting that a resume left NetworkDisconnected unchanged.
observe() suppressed the first ON_RESUME in order to swallow the replay that addObserver dispatches when the owner is already resumed. Subscribing from a process that is not resumed gets no replay, so the suppression discarded a genuine foregrounding instead. Only suppress when the owner is already resumed at subscribe time.
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aleksandar-apostolov
marked this pull request as ready for review
August 26, 2026 07:06
Recording a positive read consumed the transition the listeners wait for, when isConnected() ran after the network returned but before the system callback landed. That is the same defect this PR fixes, mirrored, and it is reachable from app code through ClientState.isNetworkAvailable. Only a negative answer is recorded now, which is the direction that can strand the socket. Restore healthMonitor.stop() in NetworkDisconnected. The replacement retry emitted Event.WebSocketEventLost, which that state does not handle, so it was inert; worse, a pending one could knock a later Connecting state into Disconnected.WebSocketEventLost. Restore the NET_CAPABILITY_VALIDATED check. With the provider fixed a false negative is no longer terminal, so the behaviour change is not worth its risk in this PR.
WalkthroughThe changes correct lifecycle resume delivery, centralize network state transitions, relax modern connectivity validation, and preserve socket recovery after network loss. Tests cover lifecycle replay, network callback behavior, and lifecycle-driven socket restart. ChangesClient recovery behavior
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to A health-monitor retry can still leave the socket permanently disconnected when the corresponding event is not handled, keeping users offline until the process restarts. The missing state transition and regression test should be addressed before merging. Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Description checkExplanation The description includes the goal, implementation details, issue link, testing summary, and confirms that there are no API changes. The omitted UI and checklist sections are not critical for this non-UI bug fix.
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Inline comments:
In
`@stream-chat-android-client/src/main/java/io/getstream/chat/android/client/socket/ChatSocket.kt`:
- Around line 155-159: Update ChatSocketStateService’s
State.Disconnected.NetworkDisconnected handling to transition on
Event.WebSocketEventLost, allowing healthMonitor.onDisconnected() and its
reconnectCallback to initiate recovery when network callbacks are missed. Add a
regression test covering this health-monitor recovery path.
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📒 Files selected for processing (7)
stream-chat-android-client/src/main/java/io/getstream/chat/android/client/StreamLifecycleObserver.ktstream-chat-android-client/src/main/java/io/getstream/chat/android/client/network/NetworkStateProvider.ktstream-chat-android-client/src/main/java/io/getstream/chat/android/client/socket/ChatSocket.ktstream-chat-android-client/src/main/java/io/getstream/chat/android/client/socket/ChatSocketStateService.ktstream-chat-android-client/src/test/java/io/getstream/chat/android/client/StreamLifecycleObserverTest.ktstream-chat-android-client/src/test/java/io/getstream/chat/android/client/network/NetworkStateProviderTest.ktstream-chat-android-client/src/test/java/io/getstream/chat/android/client/socket/experimental/ChatSocketStateServiceTest.kt
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VelikovPetar
approved these changes
Aug 26, 2026
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🚀 Available in v6.42.1 |
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Goal
Fixes AND-1450 — socket gets into
Disconnected.Networkand never comes back out, client stays offline until the process dies.Implementation
Provider now records direct
isConnected()reads so the cached flag can't go stale.Disconnected.Networkkeeps a retry and handlesEvent.Resume. Lifecycle observer only swallows the replayed resume. Also droppedNET_CAPABILITY_VALIDATED. All internal, no API change.Testing
New unit tests.
Summary by CodeRabbit
Bug Fixes
Tests