pub struct Builder<I, E = Exec> { /* private fields */ }
Expand description

A builder for a Server.

Implementations

Start a new builder, wrapping an incoming stream and low-level options.

For a more convenient constructor, see Server::bind.

Sets whether to use keep-alive for HTTP/1 connections.

Default is true.

Set whether HTTP/1 connections should support half-closures.

Clients can chose to shutdown their write-side while waiting for the server to respond. Setting this to true will prevent closing the connection immediately if read detects an EOF in the middle of a request.

Default is false.

Set the maximum buffer size.

Default is ~ 400kb.

Set whether HTTP/1 connections should try to use vectored writes, or always flatten into a single buffer.

Note that setting this to false may mean more copies of body data, but may also improve performance when an IO transport doesn’t support vectored writes well, such as most TLS implementations.

Setting this to true will force hyper to use queued strategy which may eliminate unnecessary cloning on some TLS backends

Default is auto. In this mode hyper will try to guess which mode to use

Set whether HTTP/1 connections will write header names as title case at the socket level.

Note that this setting does not affect HTTP/2.

Default is false.

Set whether to support preserving original header cases.

Currently, this will record the original cases received, and store them in a private extension on the Request. It will also look for and use such an extension in any provided Response.

Since the relevant extension is still private, there is no way to interact with the original cases. The only effect this can have now is to forward the cases in a proxy-like fashion.

Note that this setting does not affect HTTP/2.

Default is false.

Set a timeout for reading client request headers. If a client does not transmit the entire header within this time, the connection is closed.

Default is None.

Sets whether HTTP/1 is required.

Default is false.

Sets whether HTTP/2 is required.

Default is false.

Sets the SETTINGS_INITIAL_WINDOW_SIZE option for HTTP2 stream-level flow control.

Passing None will do nothing.

If not set, hyper will use a default.

Sets the max connection-level flow control for HTTP2

Passing None will do nothing.

If not set, hyper will use a default.

Sets whether to use an adaptive flow control.

Enabling this will override the limits set in http2_initial_stream_window_size and http2_initial_connection_window_size.

Sets the maximum frame size to use for HTTP2.

Passing None will do nothing.

If not set, hyper will use a default.

Sets the SETTINGS_MAX_CONCURRENT_STREAMS option for HTTP2 connections.

Default is no limit (std::u32::MAX). Passing None will do nothing.

Sets an interval for HTTP2 Ping frames should be sent to keep a connection alive.

Pass None to disable HTTP2 keep-alive.

Default is currently disabled.

Cargo Feature

Requires the runtime cargo feature to be enabled.

Sets a timeout for receiving an acknowledgement of the keep-alive ping.

If the ping is not acknowledged within the timeout, the connection will be closed. Does nothing if http2_keep_alive_interval is disabled.

Default is 20 seconds.

Cargo Feature

Requires the runtime cargo feature to be enabled.

Set the maximum write buffer size for each HTTP/2 stream.

Default is currently ~400KB, but may change.

Panics

The value must be no larger than u32::MAX.

Sets the Executor to deal with connection tasks.

Default is tokio::spawn.

Consume this Builder, creating a Server.

Example
use hyper::{Body, Error, Response, Server};
use hyper::service::{make_service_fn, service_fn};

// Construct our SocketAddr to listen on...
let addr = ([127, 0, 0, 1], 3000).into();

// And a MakeService to handle each connection...
let make_svc = make_service_fn(|_| async {
    Ok::<_, Error>(service_fn(|_req| async {
        Ok::<_, Error>(Response::new(Body::from("Hello World")))
    }))
});

// Then bind and serve...
let server = Server::bind(&addr)
    .serve(make_svc);

// Run forever-ish...
if let Err(err) = server.await {
    eprintln!("server error: {}", err);
}

Set whether TCP keepalive messages are enabled on accepted connections.

If None is specified, keepalive is disabled, otherwise the duration specified will be the time to remain idle before sending TCP keepalive probes.

Set the value of TCP_NODELAY option for accepted connections.

Set whether to sleep on accept errors.

A possible scenario is that the process has hit the max open files allowed, and so trying to accept a new connection will fail with EMFILE. In some cases, it’s preferable to just wait for some time, if the application will likely close some files (or connections), and try to accept the connection again. If this option is true, the error will be logged at the error level, since it is still a big deal, and then the listener will sleep for 1 second.

In other cases, hitting the max open files should be treat similarly to being out-of-memory, and simply error (and shutdown). Setting this option to false will allow that.

For more details see AddrIncoming::set_sleep_on_errors

Trait Implementations

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

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Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

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