Trait WasiHttpHooks

Source

pub trait WasiHttpHooks: Send {
    // Provided methods
    fn send_request(
        &mut self,
        request: Request<HyperOutgoingBody>,
        config: OutgoingRequestConfig,
    ) -> HttpResult<HostFutureIncomingResponse> { ... }
    fn is_forbidden_header(&mut self, name: &HeaderName) -> bool { ... }
    fn outgoing_body_buffer_chunks(&mut self) -> usize { ... }
    fn outgoing_body_chunk_size(&mut self) -> usize { ... }
}

Available on crate feature p2 only.

Expand description

A trait which provides hooks into internal WASI HTTP operations.

§Example

use wasmtime::component::ResourceTable;
use wasmtime_wasi::{WasiCtx, WasiCtxView, WasiView};
use wasmtime_wasi_http::WasiHttpCtx;
use wasmtime_wasi_http::p2::{WasiHttpView, WasiHttpCtxView};

struct MyState {
    ctx: WasiCtx,
    http_ctx: WasiHttpCtx,
    table: ResourceTable,
}

impl WasiHttpView for MyState {
    fn http(&mut self) -> WasiHttpCtxView<'_> {
        WasiHttpCtxView {
            ctx: &mut self.http_ctx,
            table: &mut self.table,
            hooks: Default::default(),
        }
    }
}

impl WasiView for MyState {
    fn ctx(&mut self) -> WasiCtxView<'_> {
        WasiCtxView { ctx: &mut self.ctx, table: &mut self.table }
    }
}

impl MyState {
    fn new() -> MyState {
        let mut wasi = WasiCtx::builder();
        wasi.arg("./foo.wasm");
        wasi.arg("--help");
        wasi.env("FOO", "bar");

        MyState {
            ctx: wasi.build(),
            table: ResourceTable::new(),
            http_ctx: WasiHttpCtx::new(),
        }
    }
}