8d2a376b0f
Before this change, the StompProtocolHandler always responded to clients with a CONNECTED frame, while the STOMP broker relay independantly forwarded the client CONNECT to the broker and waited for the CONNECTED frame back. That meant the relay had to buffer client messages until it received the CONNECTED response from the message broker. This change ensures that clients wait for a CONNECTED frame from the message broker. The broker relay forwards the CONNECT frame to the broker. The broker responds with a CONNECTED frame, which the relay then forwards to the client. As a result, a (well-written) client will not send any messages to the relay until the connection to the broker is fully established. The StompProtcolHandler can now be configured whether to send CONNECTED frame back. By default that is off. So when using the simple broker, the StompProtocolHandler can still respond with CONNECTED frames. The relay's handling of a connection being dropped has also been improved. When a connection for a client relay session is dropped an ERROR frame will be sent back to the client. If a connection is closed as part of a DISCONNECT frame being sent, no ERROR frame is sent back to the client. When the connection for the system relay session is dropped, an event is published indicating that the broker is unavailable. Reactor's TcpClient will then attempt to re-restablish the connection.
Spring Framework
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
The framework also serves as the foundation for Spring Integration, Spring Batch and the rest of the Spring family of projects. Browse the repositories under the SpringSource organization on GitHub for a full list.
Downloading artifacts
See downloading Spring artifacts for Maven repository information. Unable to use Maven or other transitive dependency management tools? See building a distribution with dependencies.
Documentation
See the current Javadoc and reference docs.
Getting support
Check out the Spring forums and the spring and spring-mvc tags on Stack Overflow. Commercial support is available too.
Issue Tracking
Report issues via the Spring Framework JIRA. Understand our issue management process by reading about the lifecycle of an issue. Think you've found a bug? Please consider submitting a reproduction project via the spring-framework-issues GitHub repository. The readme there provides simple step-by-step instructions.
Building from source
The Spring Framework uses a Gradle-based build system. In the instructions
below, ./gradlew is invoked from the root of the source tree and serves as
a cross-platform, self-contained bootstrap mechanism for the build.
prerequisites
Git and OpenJDK 8 early access build 100 or later
Be sure that your JAVA_HOME environment variable points to the jdk1.8.0 folder
extracted from the JDK download.
check out sources
git clone git://github.com/SpringSource/spring-framework.git
import sources into your IDE
Run ./import-into-eclipse.sh or read import-into-idea.md as appropriate.
Note: Per the prerequisites above, ensure that you have JDK 8 configured properly in your IDE.
install all spring-* jars into your local Maven cache
./gradlew install
compile and test, build all jars, distribution zips and docs
./gradlew build
... and discover more commands with ./gradlew tasks. See also the Gradle
build and release FAQ.
Contributing
Pull requests are welcome; see the contributor guidelines for details.
Staying in touch
Follow @springframework and its team members on Twitter. In-depth articles can be found at the SpringSource team blog, and releases are announced via our news feed.
License
The Spring Framework is released under version 2.0 of the Apache License.