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[Client] Resume interrupted SSE streams #463

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[Client] Resume interrupted SSE streams #463

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7 changes: 7 additions & 0 deletions docs/client.md
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Expand Up @@ -240,6 +240,13 @@ $transport = new HttpTransport(
- `requestFactory` (RequestFactoryInterface|null): PSR-17 request factory (auto-discovered)
- `streamFactory` (StreamFactoryInterface|null): PSR-17 stream factory (auto-discovered)
- `logger` (LoggerInterface|null): Optional PSR-3 logger
- `maxSseBufferBytes` (int): Maximum bytes buffered for one incomplete SSE event (default: 8 MiB)
- `maxReconnectAttempts` (int): Maximum GET attempts to resume an interrupted SSE stream (default: 5)
- `initialReconnectDelayMs` (int): Initial fallback delay when the server sends no `retry` field (default: 1000 ms)
- `maxReconnectDelayMs` (int): Cap for the fallback exponential backoff (default: 10000 ms)
- `clock` (callable|null): Optional monotonic millisecond clock, primarily for deterministic tests

When an SSE connection closes before its JSON-RPC response arrives, the transport resumes it with a GET request carrying the latest `Last-Event-ID`. A server-provided SSE `retry` value controls the delay; otherwise the fallback delay doubles from 1 second up to 10 seconds. Completed requests and explicitly closed transports are not reconnected.

**PSR-18 Auto-Discovery:**

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