#压缩响应
对 Response 内容压缩处理的中间件.
提供对三种压缩格式的支持: br, gzip, deflate. 可以根据需求配置各个压缩方式的优先度等.
#HTTP 协议中的数据压缩
- 文件格式层面:特定文件类型使用专门的压缩算法
- HTTP 协议层面:通过内容编码实现端到端的资源压缩传输
- 连接层面:在 HTTP 连接的节点之间进行数据压缩
更多关于HTTP压缩的信息可以参考 Mozilla 开发者网络的文档。
#示例代码
main.rs
Cargo.toml
use salvo::prelude::*;
#[tokio::main]
async fn main() {
// Initialize logging system
tracing_subscriber::fmt().init();
// Print current working directory for debugging
println!("current_dir: {:?}", std::env::current_dir().unwrap());
// Set up base directory for static files
let current_dir = std::env::current_dir().unwrap();
let base_dir = if !current_dir.to_str().unwrap().ends_with("compression") {
current_dir
.join("compression/static")
.canonicalize()
.unwrap()
} else {
current_dir.join("static").canonicalize().unwrap()
};
println!("Base Dir: {base_dir:?}");
// Configure router with different compression settings for different paths
let router = Router::new()
// WebSocket chat with forced compression priority
.push(
Router::with_hoop(Compression::new().force_priority(true))
.path("ws_chat")
.get(StaticFile::new(base_dir.join("ws_chat.txt"))),
)
// SSE chat with Brotli compression
.push(
Router::with_hoop(Compression::new().enable_brotli(CompressionLevel::Fastest))
.path("sse_chat")
.get(StaticFile::new(base_dir.join("sse_chat.txt"))),
)
// Todos with Zstd compression
.push(
Router::with_hoop(Compression::new().enable_zstd(CompressionLevel::Fastest))
.path("todos")
.get(StaticFile::new(base_dir.join("todos.txt"))),
)
// All other paths with Gzip compression
.push(
Router::with_hoop(Compression::new().enable_gzip(CompressionLevel::Fastest))
.path("{*path}")
.get(StaticDir::new(base_dir)),
);
// Bind server to port 8698 and start serving
let acceptor = TcpListener::new("0.0.0.0:8698").bind().await;
Server::new(acceptor).serve(router).await;
}
[package]
name = "example-compression"
version.workspace = true
edition.workspace = true
publish.workspace = true
rust-version.workspace = true
[dependencies]
salvo = { workspace = true, features = ["compression", "serve-static"] }
tokio = { workspace = true, features = ["macros"] }
tracing.workspace = true
tracing-subscriber.workspace = true