9e51ba4ea4
JIRA; https://jira.spring.io/browse/INT-4024 When the `FailOverClientConnectionFactory` is used on top of a `CachingClientConnectionFactory`, the underlying connection's listener is changed to the new `CachedConnection` which in turn has its listener set to the new `FailoverTcpConnection`. Since the caching connection factory implies single-use (so the connection is "closed" - returned to the cache), the `FOCCF` is also forced to have single-use = true - hence the new ultimate listener. The `TcpNetConnection` obtained its listener (`getListner()`) in the outer block of its read loop and hence did not detect the listener change. This caused the old listener (cached connection) to be invoked and when the result was ultimately passed back to the `TcpOutboundGateway`, the connection id did not match and the reply eventually timed out. Change the `TcpNetConnection` to call `getListener()` for every message. This was already the case in `TcpNioConnection`.
Spring Integration 
Checking out and Building
To check out the project and build from source, do the following:
git clone git://github.com/spring-projects/spring-integration.git
cd spring-integration
./gradlew build
NOTE: While Spring Integration runs with Java SE 6 or higher, a Java 8 compiler is required to build the project.
If you encounter out of memory errors during the build, increase available heap and permgen for Gradle:
GRADLE_OPTS='-XX:MaxPermSize=1024m -Xmx1024m'
To build and install jars into your local Maven cache:
./gradlew install
To build api Javadoc (results will be in build/api):
./gradlew api
To build reference documentation (results will be in build/reference):
./gradlew reference
To build complete distribution including -dist, -docs, and -schema zip files (results will be in build/distributions)
./gradlew dist
Using Eclipse
To generate Eclipse metadata (.classpath and .project files), do the following:
./gradlew eclipse
Once complete, you may then import the projects into Eclipse as usual:
File -> Import -> Existing projects into workspace
Browse to the 'spring-integration' root directory. All projects should import free of errors.
Using IntelliJ IDEA
To generate IDEA metadata (.iml and .ipr files), do the following:
./gradlew idea
Resources
For more information, please visit the Spring Integration website at: http://projects.spring.io/spring-integration