# http-range-client
[](https://github.com/pka/http-range-client/actions)
[](https://crates.io/crates/http-range-client)
[](https://docs.rs/http-range-client)
HTTP client for HTTP Range requests with a buffer optimized for sequential reading.
Implements Seek+Read for blocking clients, which makes it a drop-in replacement for local files.
## Usage examples
use http_range_client::*;
let mut client = BufferedHttpRangeClient::new("https://flatgeobuf.org/test/data/countries.fgb");
let bytes = client.min_req_size(256).get_range(0, 3).await?;
assert_eq!(bytes, b"fgb");
let version = client.get_bytes(1).await?; // From buffer - no HTTP request!
assert_eq!(version, [3]);
let mut reader = HttpReader::new("https://www.rust-lang.org/static/images/favicon-32x32.png");
reader.seek(SeekFrom::Start(1)).ok();
let mut bytes = [0; 3];
reader.read_exact(&mut bytes)?;
assert_eq!(&bytes, b"PNG");
## Supported HTTP clients (feature flag)
* [reqwest](https://crates.io/crates/reqwest) async (`reqwest-async`, default)
* [reqwest](https://crates.io/crates/reqwest) blocking (`reqwest-sync`, default):
Not supported on Wasm target
* [ureq](https://crates.io/crates/ureq) blocking (`ureq-sync`):
Not supported on Wasm target
Other clients can be used via the `AsyncBufferedHttpRangeClient` resp. `SyncBufferedHttpRangeClient` adapter, after implementing the `AsyncHttpRangeClient` resp. `SyncHttpRangeClient` trait.