Allow passing custom Last-Event-Id

Open Beginner friendly
#7 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
68/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Quiet
Tech stack
node.js, typescript
Domain
api

Research direction

Start by locating EventStreamOptions and the code that creates the server-sent events request. Trace how Last-Event-Id is handled on connection and reconnection, then verify that a supplied lastEventId is sent for the initial stream without changing automatic reconnect behavior.

Written by the indexing model from the issue text.

Description

enhancement

Add an option lastEventId to EventStreamOptions, so the application can pass a custom last event ID.

This is important to have, so that a user can specify a last event ID per query parameter or similar, since the native DOM EventSource does not allow customizing the Last-Event-Id header.

Use case: The user wants to stream data from a certain point onwards (e.g. the last time they were online) when opening the stream. The Last-Event-Id header is only automatically set when reconnecting an already open stream that had some connectivity issue.

Dominant language
TypeScript
Stars
20
Forks
2
No merged PRs in 30d

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