org.springframework.boot.web.server

Interface WebServer

All Known Implementing Classes:

JettyWebServer, NettyWebServer, TomcatWebServer, UndertowServletWebServer, UndertowWebServer

public interface WebServer

Simple interface that represents a fully configured web server (for example Tomcat, Jetty, Netty). Allows the server to be started and stopped.

Since:

2.0.0

Method Summary

Modifier and Type	Method and Description
int	getPort() Return the port this server is listening on.
default void	shutDownGracefully(GracefulShutdownCallback callback) Initiates a graceful shutdown of the web server.
void	start() Starts the web server.
void	stop() Stops the web server.

Method Detail

start

void start()
    throws WebServerException

Starts the web server. Calling this method on an already started server has no effect.

Throws:

WebServerException - if the server cannot be started

stop

void stop()
   throws WebServerException

Stops the web server. Calling this method on an already stopped server has no effect.

Throws:

WebServerException - if the server cannot be stopped

getPort

int getPort()

Return the port this server is listening on.

Returns:

the port (or -1 if none)

shutDownGracefully

default void shutDownGracefully(GracefulShutdownCallback callback)

Initiates a graceful shutdown of the web server. Handling of new requests is prevented and the given callback is invoked at the end of the attempt. The attempt can be explicitly ended by invoking stop(). The default implementation invokes the callback immediately with GracefulShutdownResult.IMMEDIATE, i.e. no attempt is made at a graceful shutdown.

Parameters:

callback - the callback to invoke when the graceful shutdown completes

Since:

2.3.0