May 2014
Intermediate to advanced
352 pages
10h 56m
Polish
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Rozdział 16. Server-Sent Events (SSE)
Standard Server-Sent Events (zdarzenia wysyłane przez serwer) umożliwia efektywne strumieniowanie zdarzeń tekstowych, np. powiadomień w czasie rzeczywistym lub aktualizacji generowanych przez serwer. Aby osiągnąć ten, cel protokół SSE wprowadza dwa komponenty: nowy interfejs EventSource w przeglądarce, umożliwiający klientowi odbieranie powiadomień z serwera jako zdarzeń modelu DOM, oraz „strumień zdarzeń” — format danych wykorzystywany do dostarczania indywidualnych aktualizacji danych.
Kombinacja interfejsu EventSource API i ściśle zdefiniowanego formatu danych w strumieniu zdarzeń w przeglądarce sprawia, że protokół SSE jest skutecznym i niezbędnym narzędziem do przetwarzania danych w czasie rzeczywistym ...
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