Struct actix_web::server::HttpServer

pub struct HttpServer<H> where
    H: IntoHttpHandler + 'static,  { /* fields omitted */ }

An HTTP Server

Methods

impl<H> HttpServer<H> where
    H: IntoHttpHandler + 'static, 

pub fn new<F, U>(factory: F) -> Self where
    F: Fn() -> U + Sync + Send + 'static,
    U: IntoIterator<Item = H> + 'static, 

Create new http server with application factory

pub fn threads(self, num: usize) -> Self

Set number of workers to start.

By default http server uses number of available logical cpu as threads count.

pub fn backlog(self, num: i32) -> Self

Set the maximum number of pending connections.

This refers to the number of clients that can be waiting to be served. Exceeding this number results in the client getting an error when attempting to connect. It should only affect servers under significant load.

Generally set in the 64-2048 range. Default value is 2048.

This method should be called before bind() method call.

pub fn keep_alive(self, val: Option<u64>) -> Self

Set server keep-alive setting.

By default keep alive is enabled.

• Some(75) - enable

• Some(0) - disable

• None - use SO_KEEPALIVE socket option

pub fn server_hostname(self, val: String) -> Self

Set server host name.

Host name is used by application router aa a hostname for url generation. Check ConnectionInfo documentation for more information.

pub fn system_exit(self) -> Self

Send SystemExit message to actix system

SystemExit message stops currently running system arbiter and all nested arbiters.

pub fn signals(self, addr: Addr<Syn, ProcessSignals>) -> Self

Set alternative address for ProcessSignals actor.

pub fn disable_signals(self) -> Self

Disable signal handling

pub fn shutdown_timeout(self, sec: u16) -> Self

Timeout for graceful workers shutdown.

After receiving a stop signal, workers have this much time to finish serving requests. Workers still alive after the timeout are force dropped.

By default shutdown timeout sets to 30 seconds.

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn addrs(&self) -> Vec<SocketAddr>

Get addresses of bound sockets.

pub fn listen(self, lst: TcpListener) -> Self

Use listener for accepting incoming connection requests

HttpServer does not change any configuration for TcpListener, it needs to be configured before passing it to listen() method.

pub fn bind<S: ToSocketAddrs>(self, addr: S) -> Result<Self>

The socket address to bind

To mind multiple addresses this method can be call multiple times.

impl<H: IntoHttpHandler> HttpServer<H>

pub fn start(self) -> Addr<Syn, Self>

Start listening for incoming connections.

This method starts number of http handler workers in separate threads. For each address this method starts separate thread which does accept() in a loop.

This methods panics if no socket addresses get bound.

This method requires to run within properly configured Actix system.

extern crate actix;
extern crate actix_web;
use actix_web::*;

fn main() {
    let sys = actix::System::new("example");  // <- create Actix system

    HttpServer::new(
        || Application::new()
             .resource("/", |r| r.h(httpcodes::HttpOk)))
        .bind("127.0.0.1:0").expect("Can not bind to 127.0.0.1:0")
        .start();

   let _ = sys.run();  // <- Run actix system, this method actually starts all async processes
}

pub fn run(self)

Spawn new thread and start listening for incoming connections.

This method spawns new thread and starts new actix system. Other than that it is similar to start() method. This method blocks.

This methods panics if no socket addresses get bound.

use actix_web::*;

fn main() {
    HttpServer::new(
        || Application::new()
             .resource("/", |r| r.h(httpcodes::HttpOk)))
        .bind("127.0.0.1:0").expect("Can not bind to 127.0.0.1:0")
        .run();
}

impl<H: IntoHttpHandler> HttpServer<H>

pub fn start_incoming<T, A, S>(self, stream: S, secure: bool) -> Addr<Syn, Self> where
    S: Stream<Item = (T, A), Error = Error> + 'static,
    T: AsyncRead + AsyncWrite + 'static,
    A: 'static, 

Start listening for incoming connections from a stream.

This method uses only one thread for handling incoming connections.

Trait Implementations

impl<H> Sync for HttpServer<H> where
    H: IntoHttpHandler, 

impl<H> Send for HttpServer<H> where
    H: IntoHttpHandler, 

impl<H> Actor for HttpServer<H> where
    H: IntoHttpHandler, 

type Context = Context<Self>

Actor execution context type

fn started(&mut self, ctx: &mut Self::Context)

Method is called when actor get polled first time.

fn stopping(&mut self, ctx: &mut Self::Context) -> Running

Method is called after an actor is in Actor::Stopping state. There could be several reasons for stopping. Context::stop get called by the actor itself. All addresses to current actor get dropped and no more evented objects left in the context.

fn stopped(&mut self, ctx: &mut Self::Context)

Method is called after an actor is stopped, it can be used to perform any needed cleanup work or spawning more actors. This is final state, after this call actor get dropped.

fn start<Addr>(self) -> Addr where
    Self: Actor<Context = Context<Self>> + ActorAddress<Self, Addr>, 

Start new asynchronous actor, returns address of newly created actor.

fn start_default<Addr>() -> Addr where
    Self: Default + Actor<Context = Context<Self>> + ActorAddress<Self, Addr>, 

Start new asynchronous actor, returns address of newly created actor.

fn create<Addr, F>(f: F) -> Addr where
    F: FnOnce(&mut Context<Self>) -> Self + 'static,
    Self: Actor<Context = Context<Self>> + ActorAddress<Self, Addr>, 

Use create method, if you need Context object during actor initialization.

impl<H: IntoHttpHandler> Handler<Signal> for HttpServer<H>

Signals support Handle SIGINT, SIGTERM, SIGQUIT signals and send SystemExit(0) message to System actor.

type Result = ()

The type of value that this handle will return

fn handle(&mut self, msg: Signal, ctx: &mut Context<Self>)

Method is called for every message received by this Actor

impl<H: IntoHttpHandler> Handler<PauseServer> for HttpServer<H>

type Result = ()

The type of value that this handle will return

fn handle(&mut self, _: PauseServer, _: &mut Context<Self>)

Method is called for every message received by this Actor

impl<H: IntoHttpHandler> Handler<ResumeServer> for HttpServer<H>

type Result = ()

The type of value that this handle will return

fn handle(&mut self, _: ResumeServer, _: &mut Context<Self>)

Method is called for every message received by this Actor

impl<H: IntoHttpHandler> Handler<StopServer> for HttpServer<H>

type Result = Response<(), ()>

The type of value that this handle will return

fn handle(&mut self, msg: StopServer, ctx: &mut Context<Self>) -> Self::Result

Method is called for every message received by this Actor