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[Other] SSE (2) fetch-event-source reconnection issue after switching browser tabs

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Posted on 2024-12-25 16:48:29 | | | |
Requirements: Use Microsoft's@microsoft/fetch-event-sourceAs a client of SSE, when the browser switches tabs, it will automatically disconnect from receiving messages, and then when the window is activated, it will reconnect to make requests and respond again.

Review:

SSE (1) uses ASP.NET Core as the SSE server
https://www.itsvse.com/thread-10752-1-1.html


Default behavior: Most browsers will automatically close the event source connection when the page becomes invisible when openWhenHidden is not specified. fetchEventSource automatically closes the request and reopens it when the document becomes visible again.



The hyperlink login is visible.

/**
     * If true, will keep the request open even if the document is hidden.
     * By default, fetchEventSource will close the request and reopen it
     * automatically when the document becomes visible again.
     */
    openWhenHidden?: boolean;


solution

openWhenHiddenSet to true will keep the request open even when the tab is hidden.






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