18 releases (11 breaking)

0.13.0 Jul 30, 2024
0.12.2 Dec 20, 2023
0.12.0 Nov 15, 2023
0.11.0 Nov 7, 2022
0.2.0 Jul 24, 2019

#25 in HTTP client

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186,986 downloads per month
Used in 19 crates (14 directly)

Apache-2.0

300KB
1.5K SLoC

eventsource-client

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Client for the Server-Sent Events protocol (aka EventSource).

Requirements

Requires tokio.

Usage

Example that just prints the type of each event received:

use eventsource_client as es;

let mut client = es::ClientBuilder::for_url("https://example.com/stream")?
    .header("Authorization", "Basic username:password")?
    .build();

client
    .stream()
    .map_ok(|event| println!("got event: {:?}", event))
    .map_err(|err| eprintln!("error streaming events: {:?}", err));

(Some boilerplate omitted for clarity; see examples directory for complete, working code.)

Features

  • tokio-based streaming client.
  • Supports setting custom headers on the HTTP request (e.g. for endpoints requiring authorization).
  • Retry for failed connections.
  • Reconnection if connection is interrupted, with exponential backoff.

Stability

Early stage release for feedback purposes. May contain bugs or performance issues. API subject to change.

Dependencies

~5–16MB
~210K SLoC