Http-server

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Overview

A simple, multithreaded experimental HTTP/1.1 (RFC 2616) web server. Developed to experiment with the behavior of user agents and proxies.

The server registers itself with the JVM as an MBean, as "novaordis:service=http-server", so it can be managed via a standard JMX client such as VisualVM or JConsole.

GitHub

https://github.com/NovaOrdis/playground/tree/master/http/http-server

Run

./bin/http-server <port> [document-root]

The document-root is optional, it will sever the current directory if not specified.

Features

• The server assumes HTTP/1.1 persistent connections, as described in HTTP Persistent Connections. The server can be configured to close the connection after the initial request/response sequence by specifying "persistent-connection=false" on the command line.

• The server registers itself with the JVM's platform MBeanServer as "".

• The "listConnections()" JMX management operation lists the active connections and the closed connections, giving information such as remote and local address, creation timestamp, time alive, User-Agent, etc.

• The server has an "Echo" handler that parses the request and responds according to the request configuration: by default it responds to any URL with 200 OK.
  • If the request contains "code=<http-response-status-code>" among its query parameters, the handler generates a response with the requested status code.
  • If the request contains "length=<number-of-bytes>" among its query parameters, the handler generates a random text body of the specified length. Otherwise it generates a conventional short body ("SYNTHETIC 200 OK").
  • The handler can also introduce delays in processing of a request, if delay=<delay-in-ms> is specified on the server's command line or the request contains "delay=<delay-in-ms>" query parameter. The command line "delay" configuration is the default value, and it will be overridden by on a request by request basis, if the request contains the query parameter. Example: http://localhost:10000/?delay=2000. This request handler is useful to simulate long running requests. A "delayed" request can be released at any time by invoking the releaseDelayedRequest() JMX method.