Rust bindings for the e621.net API.

E621 is a large online archive of furry (anthropomorphic) art. rs621 provides easy-to-use bindings to its public HTTP API. It uses the reqwest crate to make HTTPs requests and exposes an asynchronous API.

• Highly asynchronous
• Convenient stream-based API.
• Post listing and searching, using any of the search options from the website.
• Pool listing and searching.
• Unlimited result count (automatically makes more requests in sequence to go beyond the API limit of 320 posts per request).
• Automatic rate-limit throttling.
• Bulk-oriented API.

Note: the API is highly asynchronous. If you're not familiar with those concepts, check out Asynchronous Programming in Rust.

First, create a Client. You'll need to provide the domain URL you'd like to use, without the final slash (most likely https://e926.net or its unsafe counterpart). You also have to provide a descriptive User-Agent for your project. The official API encourages you to include your E621 username so that you may be contacted if your project causes problems.

let client = Client::new("https://e926.net", "MyProject/1.0 (by username on e621)")?;

You can now use that client to make various operations, like a basic search, with Client::post_search. The function returns a Stream, which is like an asynchronous version of Iterator.

use futures::prelude::*;

let mut post_stream = client.post_search(&["fluffy", "order:score"][..]).take(20);

while let Some(post) = post_stream.next().await {
    println!("Post #{}", post?.id);
}

If you have a list of post IDs:

let mut post_stream = client.get_posts(&[8595, 535, 2105, 1470]);

while let Some(post) = post_stream.next().await {
    println!("Post #{}", post?.id);
}

Best effort should be made to make as few API requests as possible. rs621 helps by providing bulk-oriented methods that take care of this for you. For example, if you have 400 post IDs you'd like to fetch, a single call to Client::get_posts should be enough and WILL be faster. Do NOT call it repeatedly in a loop.

rs621 uses the rust-openssl crate. It has some requirements:

On Linux:

• OpenSSL 1.0.1, 1.0.2, or 1.1.0 with headers (see rust-openssl).

On Windows and macOS:

• Nothing.

See reqwest on crates.io for more details.

rs621 is licensed under the terms of both the MIT license and the Apache License (Version 2.0), at your choice.

See LICENSE-MIT and LICENSE-APACHE-2.0 files for the full texts.