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StreamEventId

SSE id: / Last-Event-ID = <hostId>.<bootEpoch>.<seq>: hostId = a | b (core host), bootEpoch = start of that API process in Unix ms, seq = per-account sequence on that host. A host that receives an id with a foreign hostId or an older bootEpoch always answers with event: reset first - it never compares seq values across hosts or boots.

stringStreamEventId

SSE id: / Last-Event-ID = <hostId>.<bootEpoch>.<seq>: hostId = a | b (core host), bootEpoch = start of that API process in Unix ms, seq = per-account sequence on that host. A host that receives an id with a foreign hostId or an older bootEpoch always answers with event: reset first - it never compares seq values across hosts or boots.

Possible values: Value must match regular expression ^[ab]\.[0-9]{13}\.[0-9]+$

Example: a.1789000000000.4127
StreamEventId
"a.1789000000000.4127"