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HttpPollSource

atomr_streams_io::http_poll

Struct HttpPollSource 

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pub struct HttpPollSource;
Expand description

HTTP polling source factory.

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impl HttpPollSource

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pub fn new( req: RequestSpec, interval: Duration, ) -> Source<Result<HttpResponse, HttpError>>

Poll req with a plain GET every interval, emitting each Result<HttpResponse, HttpError> in order.

The first poll happens after the first interval has elapsed. The returned source is effectively infinite — terminate it downstream with take, a atomr_streams::KillSwitch, etc.

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pub fn with_etag( req: RequestSpec, interval: Duration, ) -> Source<Result<HttpResponse, HttpError>>

Like new but performs a conditional GET: after the first successful response carrying an ETag, subsequent requests send If-None-Match: <etag>. A 304 Not Modified is surfaced as HttpResponse with not_modified == true and an empty body.

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