Rupy is a tiny Java NIO HTTP server.
* NIO (Non-Blocking IO)
* Asynchronous Reply
* Chunked Transfer
* Session Timeout
* Filter Chain
...dedicated into Java open source projects
Winstone is a servlet container that was written out of a desire to provide servlet functionality without the bloat that full J2EE compliance introduces.
It is not intended to be a completely fully functional J2EE style servlet container (by this I mean supporting extraneous APIs unrelated to Servlets, such as JNDI, JavaMail, EJBs, etc) - this is left to Tomcat, Jetty, Resin, JRun, Weblogic et al.
Sometimes you want just a simple servlet container - without all the other junk - that just goes. This is where Winstone is best suited.
Winstone supports v2.4 servlet specification, and is available in a lite version (155KB) and a full version (329KB). It supports JSP 2.0 spec when apache jasper is enabled.
The BareHTTP library implements a stripped down Java HTTP server able to satisfy only HTTP/0.9, 1.0, and 1.1 GET requests and HTTP/1.0 and 1.1 HEAD requests. It is suitable for embedded use in unit tests that require access to resources via HTTP. Also, it is convenient to use as a stripped down HTML documentation server.
AsyncWeb is a high-throughput, non blocking Java HTTP engine - designed throughout to support asynchronous request processing.
AsyncWeb employs non-blocking selector driven IO at the transport level, and is asynchronous throughout - from the initial parsing of requests, right through to and including the services implemented by users.
AsyncWeb breaks away from the blocking request / response architecture found in todays popular HTTP engines. This allows it to be highly scalable and capable of supporting very high throughput - even in high processing latency scenarios.
A simple API allows new asynchronous services to be created easily - and out-of-the-box Spring integration allows them to be configured simply and with great flexibility. In addition to "endpoint" HTTP services, AsyncWeb also allows configurable "chains" of behavior - enabling "filter" like behavior to be applied to all requests. Pluggable "resolvers" map incoming requests to their target HTTP service - and are given access to the entire incoming request - allowing the routing possibilities to be very flexible.
It is a very simple webserver, written in Java and completely portable to any Java environment which supports sockets.
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